cpython-lru_cache-weakref: Modules/gcmodule.c annotate

annotate Modules/gcmodule.c @ 16798:258dcafe2d0b legacy-trunk

Gustavo Niemeyer <niemeyer@conectiva.com>: Fixed recno support (keys are integers rather than strings). Work around DB bug that cause stdin to be closed by rnopen() when the DB file needed to exist but did not (no longer segfaults). This closes SF tracker patch #403445. Also wrapped some long lines and added whitespace around operators -- FLD.

author	Fred Drake <fdrake@acm.org>
date	Tue, 27 Feb 2001 18:56:46 +0000
parents	25bc16952a24
children	3a748caa03b9 45ccf3b889b5

rev	line source
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	1 /*
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	2
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	3 Reference Cycle Garbage Collection
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	4 ==================================
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	5
15013 25bc16952a24 - update Neil's email address Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15012 diff changeset	6 Neil Schemenauer <nas@arctrix.com>
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	7
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	8 Based on a post on the python-dev list. Ideas from Guido van Rossum,
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	9 Eric Tiedemann, and various others.
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	10
15013 25bc16952a24 - update Neil's email address Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15012 diff changeset	11 http://www.arctrix.com/nas/python/gc.html
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	12 http://www.python.org/pipermail/python-dev/2000-March/003869.html
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	13 http://www.python.org/pipermail/python-dev/2000-March/004010.html
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	14 http://www.python.org/pipermail/python-dev/2000-March/004022.html
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	15
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	16 For a highlevel view of the collection process, read the collect
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	17 function.
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	18
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	19 */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	20
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	21
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	22 #include "Python.h"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	23
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	24 #ifdef WITH_CYCLE_GC
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	25
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	26 /* magic gc_refs value */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	27 #define GC_MOVED -1
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	28
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	29 /* Global GC state */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	30
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	31 /* linked lists of container objects */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	32 static PyGC_Head generation0 = {&generation0, &generation0, 0};
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	33 static PyGC_Head generation1 = {&generation1, &generation1, 0};
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	34 static PyGC_Head generation2 = {&generation2, &generation2, 0};
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	35 static int generation = 0; /* current generation being collected */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	36
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	37 /* collection frequencies, XXX tune these */
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	38 static int enabled = 1; /* automatic collection enabled? */
14424 6460411f473e compromise value for threshold0: not too high, not too low Jeremy Hylton <jeremy@alum.mit.edu> parents: 14336 diff changeset	39 static int threshold0 = 700; /* net new containers before collection */
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	40 static int threshold1 = 10; /* generation0 collections before collecting 1 */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	41 static int threshold2 = 10; /* generation1 collections before collecting 2 */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	42
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	43 /* net new objects allocated since last collection */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	44 static int allocated;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	45
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	46 /* set for debugging information */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	47 #define DEBUG_STATS (1<<0) /* print collection statistics */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	48 #define DEBUG_COLLECTABLE (1<<1) /* print collectable objects */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	49 #define DEBUG_UNCOLLECTABLE (1<<2) /* print uncollectable objects */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	50 #define DEBUG_INSTANCES (1<<3) /* print instances */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	51 #define DEBUG_OBJECTS (1<<4) /* print other objects */
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	52 #define DEBUG_SAVEALL (1<<5) /* save all garbage in gc.garbage */
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	53 #define DEBUG_LEAK DEBUG_COLLECTABLE \| \
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	54 DEBUG_UNCOLLECTABLE \| \
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	55 DEBUG_INSTANCES \| \
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	56 DEBUG_OBJECTS \| \
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	57 DEBUG_SAVEALL
14330 6dee1985c681 refactor __del__ exception handler into PyErr_WriteUnraisable Jeremy Hylton <jeremy@alum.mit.edu> parents: 14294 diff changeset	58 static int debug;
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	59
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	60 /* list of uncollectable objects */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	61 static PyObject *garbage;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	62
14330 6dee1985c681 refactor __del__ exception handler into PyErr_WriteUnraisable Jeremy Hylton <jeremy@alum.mit.edu> parents: 14294 diff changeset	63 /* Python string to use if unhandled exception occurs */
6dee1985c681 refactor __del__ exception handler into PyErr_WriteUnraisable Jeremy Hylton <jeremy@alum.mit.edu> parents: 14294 diff changeset	64 static PyObject *gc_str;
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	65
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	66 /* list functions */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	67
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	68 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	69 gc_list_init(PyGC_Head *list)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	70 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	71 list->gc_prev = list;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	72 list->gc_next = list;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	73 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	74
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	75 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	76 gc_list_append(PyGC_Head node, PyGC_Head list)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	77 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	78 node->gc_next = list;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	79 node->gc_prev = list->gc_prev;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	80 node->gc_prev->gc_next = node;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	81 list->gc_prev = node;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	82 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	83
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	84 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	85 gc_list_remove(PyGC_Head *node)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	86 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	87 node->gc_prev->gc_next = node->gc_next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	88 node->gc_next->gc_prev = node->gc_prev;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	89 #ifdef Py_DEBUG
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	90 node->gc_prev = NULL;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	91 node->gc_next = NULL;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	92 #endif
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	93 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	94
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	95 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	96 gc_list_move(PyGC_Head from, PyGC_Head to)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	97 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	98 if (from->gc_next == from) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	99 /* empty from list */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	100 gc_list_init(to);
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	101 }
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	102 else {
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	103 to->gc_next = from->gc_next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	104 to->gc_next->gc_prev = to;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	105 to->gc_prev = from->gc_prev;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	106 to->gc_prev->gc_next = to;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	107 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	108 gc_list_init(from);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	109 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	110
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	111 /* append a list onto another list, from becomes an empty list */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	112 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	113 gc_list_merge(PyGC_Head from, PyGC_Head to)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	114 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	115 PyGC_Head *tail;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	116 if (from->gc_next != from) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	117 tail = to->gc_prev;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	118 tail->gc_next = from->gc_next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	119 tail->gc_next->gc_prev = tail;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	120 to->gc_prev = from->gc_prev;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	121 to->gc_prev->gc_next = to;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	122 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	123 gc_list_init(from);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	124 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	125
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	126 static long
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	127 gc_list_size(PyGC_Head *list)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	128 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	129 PyGC_Head *gc;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	130 long n = 0;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	131 for (gc = list->gc_next; gc != list; gc = gc->gc_next) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	132 n++;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	133 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	134 return n;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	135 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	136
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	137 /* end of list stuff */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	138
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	139
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	140 /* Set all gc_refs = ob_refcnt */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	141 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	142 update_refs(PyGC_Head *containers)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	143 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	144 PyGC_Head *gc = containers->gc_next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	145 for (; gc != containers; gc=gc->gc_next) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	146 gc->gc_refs = PyObject_FROM_GC(gc)->ob_refcnt;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	147 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	148 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	149
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	150 static int
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	151 visit_decref(PyObject op, void data)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	152 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	153 if (op && PyObject_IS_GC(op)) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	154 PyObject_AS_GC(op)->gc_refs--;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	155 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	156 return 0;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	157 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	158
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	159 /* Subtract internal references from gc_refs */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	160 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	161 subtract_refs(PyGC_Head *containers)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	162 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	163 traverseproc traverse;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	164 PyGC_Head *gc = containers->gc_next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	165 for (; gc != containers; gc=gc->gc_next) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	166 traverse = PyObject_FROM_GC(gc)->ob_type->tp_traverse;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	167 (void) traverse(PyObject_FROM_GC(gc),
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	168 (visitproc)visit_decref,
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	169 NULL);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	170 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	171 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	172
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	173 /* Append objects with gc_refs > 0 to roots list */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	174 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	175 move_roots(PyGC_Head containers, PyGC_Head roots)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	176 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	177 PyGC_Head *next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	178 PyGC_Head *gc = containers->gc_next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	179 while (gc != containers) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	180 next = gc->gc_next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	181 if (gc->gc_refs > 0) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	182 gc_list_remove(gc);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	183 gc_list_append(gc, roots);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	184 gc->gc_refs = GC_MOVED;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	185 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	186 gc = next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	187 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	188 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	189
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	190 static int
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	191 visit_reachable(PyObject op, PyGC_Head roots)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	192 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	193 if (PyObject_IS_GC(op)) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	194 PyGC_Head *gc = PyObject_AS_GC(op);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	195 if (gc && gc->gc_refs != GC_MOVED) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	196 gc_list_remove(gc);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	197 gc_list_append(gc, roots);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	198 gc->gc_refs = GC_MOVED;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	199 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	200 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	201 return 0;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	202 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	203
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	204 /* Move objects referenced from reachable to reachable set. */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	205 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	206 move_root_reachable(PyGC_Head *reachable)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	207 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	208 traverseproc traverse;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	209 PyGC_Head *gc = reachable->gc_next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	210 for (; gc != reachable; gc=gc->gc_next) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	211 /* careful, reachable list is growing here */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	212 PyObject *op = PyObject_FROM_GC(gc);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	213 traverse = op->ob_type->tp_traverse;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	214 (void) traverse(op,
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	215 (visitproc)visit_reachable,
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	216 (void *)reachable);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	217 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	218 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	219
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	220 /* move all objects with finalizers (instances with __del__) */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	221 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	222 move_finalizers(PyGC_Head unreachable, PyGC_Head finalizers)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	223 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	224 PyGC_Head *next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	225 PyGC_Head *gc = unreachable->gc_next;
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	226 static PyObject *delstr = NULL;
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	227 if (delstr == NULL) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	228 delstr = PyString_InternFromString("__del__");
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	229 if (delstr == NULL)
053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	230 Py_FatalError("PyGC: can't initialize __del__ string");
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	231 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	232 for (; gc != unreachable; gc=next) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	233 PyObject *op = PyObject_FROM_GC(gc);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	234 next = gc->gc_next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	235 if (PyInstance_Check(op) && PyObject_HasAttr(op, delstr)) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	236 gc_list_remove(gc);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	237 gc_list_append(gc, finalizers);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	238 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	239 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	240 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	241
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	242
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	243 /* called by tp_traverse */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	244 static int
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	245 visit_finalizer_reachable(PyObject op, PyGC_Head finalizers)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	246 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	247 if (PyObject_IS_GC(op)) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	248 PyGC_Head *gc = PyObject_AS_GC(op);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	249 if (gc && gc->gc_refs != GC_MOVED) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	250 gc_list_remove(gc);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	251 gc_list_append(gc, finalizers);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	252 gc->gc_refs = GC_MOVED;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	253 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	254 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	255 return 0;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	256 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	257
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	258 /* Move objects referenced from roots to roots */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	259 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	260 move_finalizer_reachable(PyGC_Head *finalizers)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	261 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	262 traverseproc traverse;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	263 PyGC_Head *gc = finalizers->gc_next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	264 for (; gc != finalizers; gc=gc->gc_next) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	265 /* careful, finalizers list is growing here */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	266 traverse = PyObject_FROM_GC(gc)->ob_type->tp_traverse;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	267 (void) traverse(PyObject_FROM_GC(gc),
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	268 (visitproc)visit_finalizer_reachable,
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	269 (void *)finalizers);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	270 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	271 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	272
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	273 static void
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	274 debug_instance(char msg, PyInstanceObject inst)
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	275 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	276 char *cname;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	277 /* be careful not to create new dictionaries */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	278 PyObject *classname = inst->in_class->cl_name;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	279 if (classname != NULL && PyString_Check(classname))
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	280 cname = PyString_AsString(classname);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	281 else
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	282 cname = "?";
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	283 PySys_WriteStderr("gc: %.100s <%.100s instance at %p>\n",
053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	284 msg, cname, inst);
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	285 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	286
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	287 static void
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	288 debug_cycle(char msg, PyObject op)
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	289 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	290 if ((debug & DEBUG_INSTANCES) && PyInstance_Check(op)) {
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	291 debug_instance(msg, (PyInstanceObject *)op);
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	292 }
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	293 else if (debug & DEBUG_OBJECTS) {
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	294 PySys_WriteStderr("gc: %.100s <%.100s %p>\n",
053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	295 msg, op->ob_type->tp_name, op);
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	296 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	297 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	298
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	299 /* Handle uncollectable garbage (cycles with finalizers). */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	300 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	301 handle_finalizers(PyGC_Head finalizers, PyGC_Head old)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	302 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	303 PyGC_Head *gc;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	304 if (garbage == NULL) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	305 garbage = PyList_New(0);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	306 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	307 for (gc = finalizers->gc_next; gc != finalizers;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	308 gc = finalizers->gc_next) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	309 PyObject *op = PyObject_FROM_GC(gc);
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	310 if ((debug & DEBUG_SAVEALL) \|\| PyInstance_Check(op)) {
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	311 /* If SAVEALL is not set then just append
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	312 * instances to the list of garbage. We assume
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	313 * that all objects in the finalizers list are
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	314 * reachable from instances. */
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	315 PyList_Append(garbage, op);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	316 }
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	317 /* object is now reachable again */
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	318 gc_list_remove(gc);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	319 gc_list_append(gc, old);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	320 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	321 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	322
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	323 /* Break reference cycles by clearing the containers involved. This is
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	324 * tricky business as the lists can be changing and we don't know which
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	325 * objects may be freed. It is possible I screwed something up here. */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	326 static void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	327 delete_garbage(PyGC_Head unreachable, PyGC_Head old)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	328 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	329 inquiry clear;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	330
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	331 while (unreachable->gc_next != unreachable) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	332 PyGC_Head *gc = unreachable->gc_next;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	333 PyObject *op = PyObject_FROM_GC(gc);
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	334 if (debug & DEBUG_SAVEALL) {
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	335 PyList_Append(garbage, op);
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	336 }
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	337 else {
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	338 if ((clear = op->ob_type->tp_clear) != NULL) {
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	339 Py_INCREF(op);
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	340 clear((PyObject *)op);
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	341 Py_DECREF(op);
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	342 }
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	343 }
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	344 if (unreachable->gc_next == gc) {
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	345 /* object is still alive, move it, it may die later */
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	346 gc_list_remove(gc);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	347 gc_list_append(gc, old);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	348 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	349 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	350 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	351
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	352 /* This is the main function. Read this to understand how the
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	353 * collection process works. */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	354 static long
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	355 collect(PyGC_Head young, PyGC_Head old)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	356 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	357 long n = 0;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	358 long m = 0;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	359 PyGC_Head reachable;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	360 PyGC_Head unreachable;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	361 PyGC_Head finalizers;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	362 PyGC_Head *gc;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	363
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	364 if (debug & DEBUG_STATS) {
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	365 PySys_WriteStderr(
053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	366 "gc: collecting generation %d...\n"
053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	367 "gc: objects in each generation: %ld %ld %ld\n",
053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	368 generation,
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	369 gc_list_size(&generation0),
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	370 gc_list_size(&generation1),
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	371 gc_list_size(&generation2));
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	372 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	373
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	374 /* Using ob_refcnt and gc_refs, calculate which objects in the
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	375 * container set are reachable from outside the set (ie. have a
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	376 * refcount greater than 0 when all the references within the
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	377 * set are taken into account */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	378 update_refs(young);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	379 subtract_refs(young);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	380
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	381 /* Move everything reachable from outside the set into the
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	382 * reachable set (ie. gc_refs > 0). Next, move everything
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	383 * reachable from objects in the reachable set. */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	384 gc_list_init(&reachable);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	385 move_roots(young, &reachable);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	386 move_root_reachable(&reachable);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	387
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	388 /* move unreachable objects to a temporary list, new objects can be
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	389 * allocated after this point */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	390 gc_list_init(&unreachable);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	391 gc_list_move(young, &unreachable);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	392
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	393 /* move reachable objects to next generation */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	394 gc_list_merge(&reachable, old);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	395
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	396 /* Move objects reachable from finalizers, we can't safely delete
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	397 * them. Python programmers should take care not to create such
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	398 * things. For Python finalizers means instance objects with
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	399 * __del__ methods. */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	400 gc_list_init(&finalizers);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	401 move_finalizers(&unreachable, &finalizers);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	402 move_finalizer_reachable(&finalizers);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	403
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	404 /* Collect statistics on collectable objects found and print
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	405 * debugging information. */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	406 for (gc = unreachable.gc_next; gc != &unreachable;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	407 gc = gc->gc_next) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	408 m++;
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	409 if (debug & DEBUG_COLLECTABLE) {
053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	410 debug_cycle("collectable", PyObject_FROM_GC(gc));
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	411 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	412 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	413 /* call tp_clear on objects in the collectable set. This will cause
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	414 * the reference cycles to be broken. It may also cause some objects in
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	415 * finalizers to be freed */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	416 delete_garbage(&unreachable, old);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	417
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	418 /* Collect statistics on uncollectable objects found and print
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	419 * debugging information. */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	420 for (gc = finalizers.gc_next; gc != &finalizers;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	421 gc = gc->gc_next) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	422 n++;
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	423 if (debug & DEBUG_UNCOLLECTABLE) {
053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	424 debug_cycle("uncollectable", PyObject_FROM_GC(gc));
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	425 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	426 }
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	427 if (debug & DEBUG_STATS) {
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	428 if (m == 0 && n == 0) {
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	429 PySys_WriteStderr("gc: done.\n");
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	430 }
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	431 else {
14294 053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	432 PySys_WriteStderr(
053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	433 "gc: done, %ld unreachable, %ld uncollectable.\n",
053627e7ac14 apply patch #101362 by Vladimir Marangozov Jeremy Hylton <jeremy@alum.mit.edu> parents: 13878 diff changeset	434 n+m, n);
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	435 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	436 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	437
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	438 /* Append instances in the uncollectable set to a Python
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	439 * reachable list of garbage. The programmer has to deal with
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	440 * this if they insist on creating this type of structure. */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	441 handle_finalizers(&finalizers, old);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	442
14330 6dee1985c681 refactor __del__ exception handler into PyErr_WriteUnraisable Jeremy Hylton <jeremy@alum.mit.edu> parents: 14294 diff changeset	443 if (PyErr_Occurred()) {
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	444 if (gc_str == NULL) {
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	445 gc_str = PyString_FromString("garbage collection");
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	446 }
14330 6dee1985c681 refactor __del__ exception handler into PyErr_WriteUnraisable Jeremy Hylton <jeremy@alum.mit.edu> parents: 14294 diff changeset	447 PyErr_WriteUnraisable(gc_str);
6dee1985c681 refactor __del__ exception handler into PyErr_WriteUnraisable Jeremy Hylton <jeremy@alum.mit.edu> parents: 14294 diff changeset	448 Py_FatalError("unexpected exception during garbage collection");
6dee1985c681 refactor __del__ exception handler into PyErr_WriteUnraisable Jeremy Hylton <jeremy@alum.mit.edu> parents: 14294 diff changeset	449 }
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	450 allocated = 0;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	451 return n+m;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	452 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	453
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	454 static long
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	455 collect_generations(void)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	456 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	457 static long collections0 = 0;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	458 static long collections1 = 0;
13490 cb539824448e Initialize the return value in collect_generations() since it is updated Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13183 diff changeset	459 long n = 0;
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	460
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	461
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	462 if (collections1 > threshold2) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	463 generation = 2;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	464 gc_list_merge(&generation0, &generation2);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	465 gc_list_merge(&generation1, &generation2);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	466 if (generation2.gc_next != &generation2) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	467 n = collect(&generation2, &generation2);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	468 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	469 collections1 = 0;
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	470 }
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	471 else if (collections0 > threshold1) {
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	472 generation = 1;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	473 collections1++;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	474 gc_list_merge(&generation0, &generation1);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	475 if (generation1.gc_next != &generation1) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	476 n = collect(&generation1, &generation2);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	477 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	478 collections0 = 0;
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	479 }
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	480 else {
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	481 generation = 0;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	482 collections0++;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	483 if (generation0.gc_next != &generation0) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	484 n = collect(&generation0, &generation1);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	485 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	486 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	487 return n;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	488 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	489
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	490 void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	491 _PyGC_Insert(PyObject *op)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	492 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	493 /* collection lock since collecting may cause allocations */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	494 static int collecting = 0;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	495
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	496 #ifdef Py_DEBUG
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	497 if (!PyObject_IS_GC(op)) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	498 abort();
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	499 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	500 #endif
15012 6c51b5af1bde - do not start collection during processing of an exception Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14774 diff changeset	501 if (allocated > threshold0 &&
6c51b5af1bde - do not start collection during processing of an exception Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14774 diff changeset	502 enabled &&
6c51b5af1bde - do not start collection during processing of an exception Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14774 diff changeset	503 threshold0 &&
6c51b5af1bde - do not start collection during processing of an exception Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14774 diff changeset	504 !collecting &&
6c51b5af1bde - do not start collection during processing of an exception Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14774 diff changeset	505 !PyErr_Occurred()) {
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	506 collecting++;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	507 collect_generations();
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	508 collecting--;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	509 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	510 allocated++;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	511 gc_list_append(PyObject_AS_GC(op), &generation0);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	512 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	513
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	514 void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	515 _PyGC_Remove(PyObject *op)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	516 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	517 PyGC_Head *g = PyObject_AS_GC(op);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	518 #ifdef Py_DEBUG
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	519 if (!PyObject_IS_GC(op)) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	520 abort();
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	521 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	522 #endif
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	523 gc_list_remove(g);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	524 if (allocated > 0) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	525 allocated--;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	526 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	527 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	528
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	529 static char gc_enable__doc__[] =
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	530 "enable() -> None\n"
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	531 "\n"
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	532 "Enable automatic garbage collection.\n"
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	533 ;
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	534
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	535 static PyObject *
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	536 gc_enable(PyObject self, PyObject args)
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	537 {
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	538
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	539 if (!PyArg_ParseTuple(args, ":enable")) /* check no args */
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	540 return NULL;
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	541
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	542 enabled = 1;
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	543
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	544 Py_INCREF(Py_None);
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	545 return Py_None;
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	546 }
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	547
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	548 static char gc_disable__doc__[] =
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	549 "disable() -> None\n"
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	550 "\n"
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	551 "Disable automatic garbage collection.\n"
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	552 ;
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	553
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	554 static PyObject *
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	555 gc_disable(PyObject self, PyObject args)
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	556 {
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	557
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	558 if (!PyArg_ParseTuple(args, ":disable")) /* check no args */
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	559 return NULL;
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	560
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	561 enabled = 0;
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	562
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	563 Py_INCREF(Py_None);
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	564 return Py_None;
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	565 }
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	566
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	567 static char gc_isenabled__doc__[] =
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	568 "isenabled() -> status\n"
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	569 "\n"
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	570 "Returns true if automatic garbage collection is enabled.\n"
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	571 ;
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	572
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	573 static PyObject *
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	574 gc_isenabled(PyObject self, PyObject args)
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	575 {
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	576
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	577 if (!PyArg_ParseTuple(args, ":isenabled")) /* check no args */
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	578 return NULL;
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	579
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	580 return Py_BuildValue("i", enabled);
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	581 }
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	582
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	583 static char gc_collect__doc__[] =
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	584 "collect() -> n\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	585 "\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	586 "Run a full collection. The number of unreachable objects is returned.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	587 ;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	588
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	589 static PyObject *
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	590 gc_collect(PyObject self, PyObject args)
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	591 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	592 long n;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	593
13567 cfb2a0d0a869 Always use the :funcname part of the format specifier for PyArg_ParseTuple() Fred Drake <fdrake@acm.org> parents: 13534 diff changeset	594 if (!PyArg_ParseTuple(args, ":collect")) /* check no args */
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	595 return NULL;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	596
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	597 generation = 2;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	598 gc_list_merge(&generation0, &generation2);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	599 gc_list_merge(&generation1, &generation2);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	600 n = collect(&generation2, &generation2);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	601
14774 52174b002f1f Fix some long/"l" int/"i" mismatches. Fixes bug #113779. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14756 diff changeset	602 return Py_BuildValue("l", n);
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	603 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	604
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	605 static char gc_set_debug__doc__[] =
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	606 "set_debug(flags) -> None\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	607 "\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	608 "Set the garbage collection debugging flags. Debugging information is\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	609 "written to sys.stderr.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	610 "\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	611 "flags is an integer and can have the following bits turned on:\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	612 "\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	613 " DEBUG_STATS - Print statistics during collection.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	614 " DEBUG_COLLECTABLE - Print collectable objects found.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	615 " DEBUG_UNCOLLECTABLE - Print unreachable but uncollectable objects found.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	616 " DEBUG_INSTANCES - Print instance objects.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	617 " DEBUG_OBJECTS - Print objects other than instances.\n"
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	618 " DEBUG_SAVEALL - Save objects to gc.garbage rather than freeing them.\n"
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	619 " DEBUG_LEAK - Debug leaking programs (everything but STATS).\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	620 ;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	621
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	622 static PyObject *
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	623 gc_set_debug(PyObject self, PyObject args)
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	624 {
14774 52174b002f1f Fix some long/"l" int/"i" mismatches. Fixes bug #113779. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14756 diff changeset	625 if (!PyArg_ParseTuple(args, "i:set_debug", &debug))
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	626 return NULL;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	627
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	628 Py_INCREF(Py_None);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	629 return Py_None;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	630 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	631
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	632 static char gc_get_debug__doc__[] =
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	633 "get_debug() -> flags\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	634 "\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	635 "Get the garbage collection debugging flags.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	636 ;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	637
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	638 static PyObject *
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	639 gc_get_debug(PyObject self, PyObject args)
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	640 {
13567 cfb2a0d0a869 Always use the :funcname part of the format specifier for PyArg_ParseTuple() Fred Drake <fdrake@acm.org> parents: 13534 diff changeset	641 if (!PyArg_ParseTuple(args, ":get_debug")) /* no args */
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	642 return NULL;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	643
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	644 return Py_BuildValue("i", debug);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	645 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	646
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	647 static char gc_set_thresh__doc__[] =
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	648 "set_threshold(threshold0, [threhold1, threshold2]) -> None\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	649 "\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	650 "Sets the collection thresholds. Setting threshold0 to zero disables\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	651 "collection.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	652 ;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	653
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	654 static PyObject *
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	655 gc_set_thresh(PyObject self, PyObject args)
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	656 {
13567 cfb2a0d0a869 Always use the :funcname part of the format specifier for PyArg_ParseTuple() Fred Drake <fdrake@acm.org> parents: 13534 diff changeset	657 if (!PyArg_ParseTuple(args, "i\|ii:set_threshold", &threshold0,
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	658 &threshold1, &threshold2))
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	659 return NULL;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	660
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	661 Py_INCREF(Py_None);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	662 return Py_None;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	663 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	664
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	665 static char gc_get_thresh__doc__[] =
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	666 "get_threshold() -> (threshold0, threshold1, threshold2)\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	667 "\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	668 "Return the current collection thresholds\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	669 ;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	670
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	671 static PyObject *
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	672 gc_get_thresh(PyObject self, PyObject args)
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	673 {
13567 cfb2a0d0a869 Always use the :funcname part of the format specifier for PyArg_ParseTuple() Fred Drake <fdrake@acm.org> parents: 13534 diff changeset	674 if (!PyArg_ParseTuple(args, ":get_threshold")) /* no args */
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	675 return NULL;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	676
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	677 return Py_BuildValue("(iii)", threshold0, threshold1, threshold2);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	678 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	679
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	680
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	681 static char gc__doc__ [] =
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	682 "This module provides access to the garbage collector for reference cycles.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	683 "\n"
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	684 "enable() -- Enable automatic garbage collection.\n"
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	685 "disable() -- Disable automatic garbage collection.\n"
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	686 "isenabled() -- Returns true if automatic collection is enabled.\n"
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	687 "collect() -- Do a full collection right now.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	688 "set_debug() -- Set debugging flags.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	689 "get_debug() -- Get debugging flags.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	690 "set_threshold() -- Set the collection thresholds.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	691 "get_threshold() -- Return the current the collection thresholds.\n"
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	692 ;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	693
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	694 static PyMethodDef GcMethods[] = {
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	695 {"enable", gc_enable, METH_VARARGS, gc_enable__doc__},
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	696 {"disable", gc_disable, METH_VARARGS, gc_disable__doc__},
13878 abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	697 {"isenabled", gc_isenabled, METH_VARARGS, gc_isenabled__doc__},
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	698 {"set_debug", gc_set_debug, METH_VARARGS, gc_set_debug__doc__},
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	699 {"get_debug", gc_get_debug, METH_VARARGS, gc_get_debug__doc__},
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	700 {"set_threshold", gc_set_thresh, METH_VARARGS, gc_set_thresh__doc__},
abfa4e4b2f3e Neil Schemenauer: GC enable(), disable(), isenabled() interface. Vladimir Marangozov <vladimir.marangozov@t-online.de> parents: 13570 diff changeset	701 {"get_threshold", gc_get_thresh, METH_VARARGS, gc_get_thresh__doc__},
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	702 {"collect", gc_collect, METH_VARARGS, gc_collect__doc__},
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	703 {NULL, NULL} /* Sentinel */
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	704 };
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	705
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	706 void
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	707 initgc(void)
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	708 {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	709 PyObject *m;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	710 PyObject *d;
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	711
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	712 m = Py_InitModule4("gc",
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	713 GcMethods,
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	714 gc__doc__,
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	715 NULL,
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	716 PYTHON_API_VERSION);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	717 d = PyModule_GetDict(m);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	718 if (garbage == NULL) {
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	719 garbage = PyList_New(0);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	720 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	721 PyDict_SetItemString(d, "garbage", garbage);
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	722 PyDict_SetItemString(d, "DEBUG_STATS",
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	723 PyInt_FromLong(DEBUG_STATS));
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	724 PyDict_SetItemString(d, "DEBUG_COLLECTABLE",
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	725 PyInt_FromLong(DEBUG_COLLECTABLE));
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	726 PyDict_SetItemString(d, "DEBUG_UNCOLLECTABLE",
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	727 PyInt_FromLong(DEBUG_UNCOLLECTABLE));
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	728 PyDict_SetItemString(d, "DEBUG_INSTANCES",
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	729 PyInt_FromLong(DEBUG_INSTANCES));
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	730 PyDict_SetItemString(d, "DEBUG_OBJECTS",
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	731 PyInt_FromLong(DEBUG_OBJECTS));
14756 6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	732 PyDict_SetItemString(d, "DEBUG_SAVEALL",
6e9331e68a3b - Add DEBUG_SAVEALL option. When enabled all garbage objects found by the Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 14424 diff changeset	733 PyInt_FromLong(DEBUG_SAVEALL));
13183 54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	734 PyDict_SetItemString(d, "DEBUG_LEAK",
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	735 PyInt_FromLong(DEBUG_LEAK));
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	736 }
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	737
54bffdddc0ef final patches from Neil Schemenauer for garbage collection Jeremy Hylton <jeremy@alum.mit.edu> parents: diff changeset	738 #endif /* WITH_CYCLE_GC */

Mercurial > cpython-lru_cache-weakref

annotate Modules/gcmodule.c @ 16798:258dcafe2d0b legacy-trunk