Mercurial > cpython-lru_cache-weakref

annotate Python/pystate.c @ 42736:ddefbdbdbcb5 2.5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Backport fix of #1752175.
author Georg Brandl <georg@python.org>
date Thu, 23 Aug 2007 18:08:33 +0000
parents 66f265ac4ec4
children eefe4450f773 eb2eafda29b7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
1
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
2 /* Thread and interpreter state structures and their interfaces */
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
3
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
4 #include "Python.h"
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
5
33713
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
6 /* --------------------------------------------------------------------------
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
7 CAUTION
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
8
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
9 Always use malloc() and free() directly in this file. A number of these
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
10 functions are advertised as safe to call when the GIL isn't held, and in
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
11 a debug build Python redirects (e.g.) PyMem_NEW (etc) to Python's debugging
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
12 obmalloc functions. Those aren't thread-safe (they rely on the GIL to avoid
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
13 the expense of doing their own locking).
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
14 -------------------------------------------------------------------------- */
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
15
18689
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
16 #ifdef HAVE_DLOPEN
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
17 #ifdef HAVE_DLFCN_H
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
18 #include <dlfcn.h>
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
19 #endif
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
20 #ifndef RTLD_LAZY
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
21 #define RTLD_LAZY 1
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
22 #endif
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
23 #endif
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
24
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
25
11011
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
26 #ifdef WITH_THREAD
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
27 #include "pythread.h"
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
28 static PyThread_type_lock head_mutex = NULL; /* Protects interp->tstate_head */
13866
dfdb601cee1c Removing warnings by gcc -Wall -- cast ugly || to void.
Moshe Zadka <moshez@math.huji.ac.il>
parents: 13658
diff changeset
29 #define HEAD_INIT() (void)(head_mutex || (head_mutex = PyThread_allocate_lock()))
11011
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
30 #define HEAD_LOCK() PyThread_acquire_lock(head_mutex, WAIT_LOCK)
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
31 #define HEAD_UNLOCK() PyThread_release_lock(head_mutex)
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
32
37655
2f3f2e32dfd9 spread the extern "C" { } magic pixie dust around. Python itself builds now
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37606
diff changeset
33 #ifdef __cplusplus
2f3f2e32dfd9 spread the extern "C" { } magic pixie dust around. Python itself builds now
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37606
diff changeset
34 extern "C" {
2f3f2e32dfd9 spread the extern "C" { } magic pixie dust around. Python itself builds now
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37606
diff changeset
35 #endif
2f3f2e32dfd9 spread the extern "C" { } magic pixie dust around. Python itself builds now
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37606
diff changeset
36
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
37 /* The single PyInterpreterState used by this process'
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
38 GILState implementation
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
39 */
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
40 static PyInterpreterState *autoInterpreterState = NULL;
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
41 static int autoTLSkey = 0;
11011
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
42 #else
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
43 #define HEAD_INIT() /* Nothing */
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
44 #define HEAD_LOCK() /* Nothing */
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
45 #define HEAD_UNLOCK() /* Nothing */
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
46 #endif
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
47
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
48 static PyInterpreterState *interp_head = NULL;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
49
9667
914f83e7fa0a Make current_tstate a global, _PyThreadState_Current. This is to
Guido van Rossum <guido@python.org>
parents: 7970
diff changeset
50 PyThreadState *_PyThreadState_Current = NULL;
27978
4b99a701defe - PyEval_GetFrame() is now declared to return a PyFrameObject *
Guido van Rossum <guido@python.org>
parents: 26109
diff changeset
51 PyThreadFrameGetter _PyThreadState_GetFrame = NULL;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
52
35661
85651eb3d9a9 Forward port bugfix:
Michael W. Hudson <mwh@python.net>
parents: 35117
diff changeset
53 #ifdef WITH_THREAD
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
54 static void _PyGILState_NoteThreadState(PyThreadState* tstate);
35661
85651eb3d9a9 Forward port bugfix:
Michael W. Hudson <mwh@python.net>
parents: 35117
diff changeset
55 #endif
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
56
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
57
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
58 PyInterpreterState *
13658
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
59 PyInterpreterState_New(void)
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
60 {
33713
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
61 PyInterpreterState *interp = (PyInterpreterState *)
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
62 malloc(sizeof(PyInterpreterState));
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
63
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
64 if (interp != NULL) {
11011
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
65 HEAD_INIT();
39129
f2031f15d99d Handle allocation failures gracefully. Found with failmalloc.
Neal Norwitz <nnorwitz@gmail.com>
parents: 39118
diff changeset
66 #ifdef WITH_THREAD
f2031f15d99d Handle allocation failures gracefully. Found with failmalloc.
Neal Norwitz <nnorwitz@gmail.com>
parents: 39118
diff changeset
67 if (head_mutex == NULL)
f2031f15d99d Handle allocation failures gracefully. Found with failmalloc.
Neal Norwitz <nnorwitz@gmail.com>
parents: 39118
diff changeset
68 Py_FatalError("Can't initialize threads for interpreter");
f2031f15d99d Handle allocation failures gracefully. Found with failmalloc.
Neal Norwitz <nnorwitz@gmail.com>
parents: 39118
diff changeset
69 #endif
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
70 interp->modules = NULL;
41131
66f265ac4ec4 Bug #742342: make Python stop segfaulting on infinitely-recursive reload()s. Fixed by patch #922167.
Collin Winter <collinw@gmail.com>
parents: 39885
diff changeset
71 interp->modules_reloading = NULL;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
72 interp->sysdict = NULL;
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
73 interp->builtins = NULL;
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
74 interp->tstate_head = NULL;
28325
850626d47574 Fixed SF bug #663074. The codec system was using global static
Gustavo Niemeyer <gustavo@niemeyer.net>
parents: 27978
diff changeset
75 interp->codec_search_path = NULL;
850626d47574 Fixed SF bug #663074. The codec system was using global static
Gustavo Niemeyer <gustavo@niemeyer.net>
parents: 27978
diff changeset
76 interp->codec_search_cache = NULL;
850626d47574 Fixed SF bug #663074. The codec system was using global static
Gustavo Niemeyer <gustavo@niemeyer.net>
parents: 27978
diff changeset
77 interp->codec_error_registry = NULL;
18689
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
78 #ifdef HAVE_DLOPEN
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
79 #ifdef RTLD_NOW
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
80 interp->dlopenflags = RTLD_NOW;
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
81 #else
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
82 interp->dlopenflags = RTLD_LAZY;
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
83 #endif
064de84385ca Patch #412229: Add functions sys.getdlopenflags and sys.setdlopenflags.
Martin v. Löwis <martin@v.loewis.de>
parents: 18374
diff changeset
84 #endif
32301
41c59d80bbc5 Patch #510695: Add TSC profiling for the VM.
Martin v. Löwis <martin@v.loewis.de>
parents: 31797
diff changeset
85 #ifdef WITH_TSC
41c59d80bbc5 Patch #510695: Add TSC profiling for the VM.
Martin v. Löwis <martin@v.loewis.de>
parents: 31797
diff changeset
86 interp->tscdump = 0;
41c59d80bbc5 Patch #510695: Add TSC profiling for the VM.
Martin v. Löwis <martin@v.loewis.de>
parents: 31797
diff changeset
87 #endif
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
88
14378
ca7316a00464 PyInterpreterState_New is not thread-safe, and the recent fix to _PyPclose
Tim Peters <tim.peters@gmail.com>
parents: 14375
diff changeset
89 HEAD_LOCK();
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
90 interp->next = interp_head;
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
91 interp_head = interp;
14378
ca7316a00464 PyInterpreterState_New is not thread-safe, and the recent fix to _PyPclose
Tim Peters <tim.peters@gmail.com>
parents: 14375
diff changeset
92 HEAD_UNLOCK();
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
93 }
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
94
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
95 return interp;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
96 }
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
97
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
98
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
99 void
13658
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
100 PyInterpreterState_Clear(PyInterpreterState *interp)
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
101 {
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
102 PyThreadState *p;
11011
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
103 HEAD_LOCK();
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
104 for (p = interp->tstate_head; p != NULL; p = p->next)
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
105 PyThreadState_Clear(p);
11011
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
106 HEAD_UNLOCK();
37752
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
107 Py_CLEAR(interp->codec_search_path);
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
108 Py_CLEAR(interp->codec_search_cache);
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
109 Py_CLEAR(interp->codec_error_registry);
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
110 Py_CLEAR(interp->modules);
41131
66f265ac4ec4 Bug #742342: make Python stop segfaulting on infinitely-recursive reload()s. Fixed by patch #922167.
Collin Winter <collinw@gmail.com>
parents: 39885
diff changeset
111 Py_CLEAR(interp->modules_reloading);
37752
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
112 Py_CLEAR(interp->sysdict);
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
113 Py_CLEAR(interp->builtins);
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
114 }
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
115
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
116
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
117 static void
13658
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
118 zapthreads(PyInterpreterState *interp)
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
119 {
11011
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
120 PyThreadState *p;
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
121 /* No need to lock the mutex here because this should only happen
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
122 when the threads are all really dead (XXX famous last words). */
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
123 while ((p = interp->tstate_head) != NULL) {
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
124 PyThreadState_Delete(p);
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
125 }
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
126 }
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
127
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
128
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
129 void
13658
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
130 PyInterpreterState_Delete(PyInterpreterState *interp)
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
131 {
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
132 PyInterpreterState **p;
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
133 zapthreads(interp);
14378
ca7316a00464 PyInterpreterState_New is not thread-safe, and the recent fix to _PyPclose
Tim Peters <tim.peters@gmail.com>
parents: 14375
diff changeset
134 HEAD_LOCK();
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
135 for (p = &interp_head; ; p = &(*p)->next) {
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
136 if (*p == NULL)
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
137 Py_FatalError(
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
138 "PyInterpreterState_Delete: invalid interp");
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
139 if (*p == interp)
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
140 break;
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
141 }
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
142 if (interp->tstate_head != NULL)
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
143 Py_FatalError("PyInterpreterState_Delete: remaining threads");
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
144 *p = interp->next;
14378
ca7316a00464 PyInterpreterState_New is not thread-safe, and the recent fix to _PyPclose
Tim Peters <tim.peters@gmail.com>
parents: 14375
diff changeset
145 HEAD_UNLOCK();
33713
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
146 free(interp);
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
147 }
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
148
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
149
26109
e61b946474df Assorted patches from Armin Rigo:
Michael W. Hudson <mwh@python.net>
parents: 25111
diff changeset
150 /* Default implementation for _PyThreadState_GetFrame */
e61b946474df Assorted patches from Armin Rigo:
Michael W. Hudson <mwh@python.net>
parents: 25111
diff changeset
151 static struct _frame *
e61b946474df Assorted patches from Armin Rigo:
Michael W. Hudson <mwh@python.net>
parents: 25111
diff changeset
152 threadstate_getframe(PyThreadState *self)
e61b946474df Assorted patches from Armin Rigo:
Michael W. Hudson <mwh@python.net>
parents: 25111
diff changeset
153 {
e61b946474df Assorted patches from Armin Rigo:
Michael W. Hudson <mwh@python.net>
parents: 25111
diff changeset
154 return self->frame;
e61b946474df Assorted patches from Armin Rigo:
Michael W. Hudson <mwh@python.net>
parents: 25111
diff changeset
155 }
e61b946474df Assorted patches from Armin Rigo:
Michael W. Hudson <mwh@python.net>
parents: 25111
diff changeset
156
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
157 PyThreadState *
13658
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
158 PyThreadState_New(PyInterpreterState *interp)
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
159 {
33713
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
160 PyThreadState *tstate = (PyThreadState *)malloc(sizeof(PyThreadState));
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
161
26109
e61b946474df Assorted patches from Armin Rigo:
Michael W. Hudson <mwh@python.net>
parents: 25111
diff changeset
162 if (_PyThreadState_GetFrame == NULL)
27978
4b99a701defe - PyEval_GetFrame() is now declared to return a PyFrameObject *
Guido van Rossum <guido@python.org>
parents: 26109
diff changeset
163 _PyThreadState_GetFrame = threadstate_getframe;
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
164
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
165 if (tstate != NULL) {
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
166 tstate->interp = interp;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
167
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
168 tstate->frame = NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
169 tstate->recursion_depth = 0;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
170 tstate->tracing = 0;
18374
3b295ce2705f This change adjusts the profiling/tracing support so that the common
Fred Drake <fdrake@acm.org>
parents: 18326
diff changeset
171 tstate->use_tracing = 0;
26109
e61b946474df Assorted patches from Armin Rigo:
Michael W. Hudson <mwh@python.net>
parents: 25111
diff changeset
172 tstate->tick_counter = 0;
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
173 tstate->gilstate_counter = 0;
29643
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
174 tstate->async_exc = NULL;
29842
014cc362aa91 Initialize thread_id to 0 in unthreaded build. Fixes #770247.
Martin v. Löwis <martin@v.loewis.de>
parents: 29643
diff changeset
175 #ifdef WITH_THREAD
29643
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
176 tstate->thread_id = PyThread_get_thread_ident();
29842
014cc362aa91 Initialize thread_id to 0 in unthreaded build. Fixes #770247.
Martin v. Löwis <martin@v.loewis.de>
parents: 29643
diff changeset
177 #else
014cc362aa91 Initialize thread_id to 0 in unthreaded build. Fixes #770247.
Martin v. Löwis <martin@v.loewis.de>
parents: 29643
diff changeset
178 tstate->thread_id = 0;
014cc362aa91 Initialize thread_id to 0 in unthreaded build. Fixes #770247.
Martin v. Löwis <martin@v.loewis.de>
parents: 29643
diff changeset
179 #endif
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
180
7970
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
181 tstate->dict = NULL;
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
182
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
183 tstate->curexc_type = NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
184 tstate->curexc_value = NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
185 tstate->curexc_traceback = NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
186
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
187 tstate->exc_type = NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
188 tstate->exc_value = NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
189 tstate->exc_traceback = NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
190
18326
e427afb5637f Revise the interface to the profiling and tracing support for the
Fred Drake <fdrake@acm.org>
parents: 16139
diff changeset
191 tstate->c_profilefunc = NULL;
e427afb5637f Revise the interface to the profiling and tracing support for the
Fred Drake <fdrake@acm.org>
parents: 16139
diff changeset
192 tstate->c_tracefunc = NULL;
e427afb5637f Revise the interface to the profiling and tracing support for the
Fred Drake <fdrake@acm.org>
parents: 16139
diff changeset
193 tstate->c_profileobj = NULL;
e427afb5637f Revise the interface to the profiling and tracing support for the
Fred Drake <fdrake@acm.org>
parents: 16139
diff changeset
194 tstate->c_traceobj = NULL;
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
195
35661
85651eb3d9a9 Forward port bugfix:
Michael W. Hudson <mwh@python.net>
parents: 35117
diff changeset
196 #ifdef WITH_THREAD
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
197 _PyGILState_NoteThreadState(tstate);
35661
85651eb3d9a9 Forward port bugfix:
Michael W. Hudson <mwh@python.net>
parents: 35117
diff changeset
198 #endif
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
199
11011
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
200 HEAD_LOCK();
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
201 tstate->next = interp->tstate_head;
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
202 interp->tstate_head = tstate;
11011
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
203 HEAD_UNLOCK();
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
204 }
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
205
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
206 return tstate;
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
207 }
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
208
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
209
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
210 void
13658
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
211 PyThreadState_Clear(PyThreadState *tstate)
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
212 {
6549
a8e3b2e9f5d2 The warning about thread still having a frame now only happens in
Guido van Rossum <guido@python.org>
parents: 6124
diff changeset
213 if (Py_VerboseFlag && tstate->frame != NULL)
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
214 fprintf(stderr,
6124
cc2c84769636 Added missing newline to warning msg
Guido van Rossum <guido@python.org>
parents: 5926
diff changeset
215 "PyThreadState_Clear: warning: thread still has a frame\n");
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
216
37752
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
217 Py_CLEAR(tstate->frame);
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
218
37752
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
219 Py_CLEAR(tstate->dict);
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
220 Py_CLEAR(tstate->async_exc);
7970
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
221
37752
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
222 Py_CLEAR(tstate->curexc_type);
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
223 Py_CLEAR(tstate->curexc_value);
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
224 Py_CLEAR(tstate->curexc_traceback);
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
225
37752
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
226 Py_CLEAR(tstate->exc_type);
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
227 Py_CLEAR(tstate->exc_value);
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
228 Py_CLEAR(tstate->exc_traceback);
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
229
18326
e427afb5637f Revise the interface to the profiling and tracing support for the
Fred Drake <fdrake@acm.org>
parents: 16139
diff changeset
230 tstate->c_profilefunc = NULL;
e427afb5637f Revise the interface to the profiling and tracing support for the
Fred Drake <fdrake@acm.org>
parents: 16139
diff changeset
231 tstate->c_tracefunc = NULL;
37752
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
232 Py_CLEAR(tstate->c_profileobj);
7f72791f0aec Zap ZAP.
Martin v. Löwis <martin@v.loewis.de>
parents: 37655
diff changeset
233 Py_CLEAR(tstate->c_traceobj);
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
234 }
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
235
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
236
16139
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
237 /* Common code for PyThreadState_Delete() and PyThreadState_DeleteCurrent() */
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
238 static void
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
239 tstate_delete_common(PyThreadState *tstate)
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
240 {
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
241 PyInterpreterState *interp;
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
242 PyThreadState **p;
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
243 if (tstate == NULL)
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
244 Py_FatalError("PyThreadState_Delete: NULL tstate");
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
245 interp = tstate->interp;
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
246 if (interp == NULL)
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
247 Py_FatalError("PyThreadState_Delete: NULL interp");
11011
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
248 HEAD_LOCK();
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
249 for (p = &interp->tstate_head; ; p = &(*p)->next) {
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
250 if (*p == NULL)
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
251 Py_FatalError(
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
252 "PyThreadState_Delete: invalid tstate");
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
253 if (*p == tstate)
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
254 break;
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
255 }
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
256 *p = tstate->next;
11011
3b3c7b8ade7f CRITICAL PATCH!
Guido van Rossum <guido@python.org>
parents: 9667
diff changeset
257 HEAD_UNLOCK();
33713
517e4ec0df89 PyInterpreterState_New(), PyThreadState_New(): use malloc/free directly.
Tim Peters <tim.peters@gmail.com>
parents: 33711
diff changeset
258 free(tstate);
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
259 }
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
260
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
261
16139
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
262 void
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
263 PyThreadState_Delete(PyThreadState *tstate)
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
264 {
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
265 if (tstate == _PyThreadState_Current)
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
266 Py_FatalError("PyThreadState_Delete: tstate is still current");
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
267 tstate_delete_common(tstate);
36683
da2a1049215d Patch 1413181, by Gabriel Becedillas.
Tim Peters <tim.peters@gmail.com>
parents: 35661
diff changeset
268 #ifdef WITH_THREAD
da2a1049215d Patch 1413181, by Gabriel Becedillas.
Tim Peters <tim.peters@gmail.com>
parents: 35661
diff changeset
269 if (autoTLSkey && PyThread_get_key_value(autoTLSkey) == tstate)
da2a1049215d Patch 1413181, by Gabriel Becedillas.
Tim Peters <tim.peters@gmail.com>
parents: 35661
diff changeset
270 PyThread_delete_key_value(autoTLSkey);
da2a1049215d Patch 1413181, by Gabriel Becedillas.
Tim Peters <tim.peters@gmail.com>
parents: 35661
diff changeset
271 #endif /* WITH_THREAD */
16139
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
272 }
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
273
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
274
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
275 #ifdef WITH_THREAD
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
276 void
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
277 PyThreadState_DeleteCurrent()
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
278 {
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
279 PyThreadState *tstate = _PyThreadState_Current;
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
280 if (tstate == NULL)
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
281 Py_FatalError(
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
282 "PyThreadState_DeleteCurrent: no current tstate");
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
283 _PyThreadState_Current = NULL;
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
284 tstate_delete_common(tstate);
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
285 if (autoTLSkey && PyThread_get_key_value(autoTLSkey) == tstate)
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
286 PyThread_delete_key_value(autoTLSkey);
16139
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
287 PyEval_ReleaseLock();
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
288 }
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
289 #endif /* WITH_THREAD */
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
290
d96ce9708c00 Add a new API, PyThreadState_DeleteCurrent() that combines
Guido van Rossum <guido@python.org>
parents: 14378
diff changeset
291
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
292 PyThreadState *
13658
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
293 PyThreadState_Get(void)
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
294 {
9667
914f83e7fa0a Make current_tstate a global, _PyThreadState_Current. This is to
Guido van Rossum <guido@python.org>
parents: 7970
diff changeset
295 if (_PyThreadState_Current == NULL)
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
296 Py_FatalError("PyThreadState_Get: no current thread");
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
297
9667
914f83e7fa0a Make current_tstate a global, _PyThreadState_Current. This is to
Guido van Rossum <guido@python.org>
parents: 7970
diff changeset
298 return _PyThreadState_Current;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
299 }
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
300
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
301
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
302 PyThreadState *
37606
f448d0075691 more low-hanging fruit to make code compile under a C++ compiler. Not
Anthony Baxter <anthonybaxter@gmail.com>
parents: 36683
diff changeset
303 PyThreadState_Swap(PyThreadState *newts)
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
304 {
37606
f448d0075691 more low-hanging fruit to make code compile under a C++ compiler. Not
Anthony Baxter <anthonybaxter@gmail.com>
parents: 36683
diff changeset
305 PyThreadState *oldts = _PyThreadState_Current;
5926
8d2194e22e67 The last of the mass checkins for separate (sub)interpreters.
Guido van Rossum <guido@python.org>
parents: 5849
diff changeset
306
37606
f448d0075691 more low-hanging fruit to make code compile under a C++ compiler. Not
Anthony Baxter <anthonybaxter@gmail.com>
parents: 36683
diff changeset
307 _PyThreadState_Current = newts;
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
308 /* It should not be possible for more than one thread state
33698
090ffcb83f0a Trim trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 32301
diff changeset
309 to be used for a thread. Check this the best we can in debug
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
310 builds.
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
311 */
28914
33475661823d Patch #729300: Disable error message if Python is not built for threads.
Martin v. Löwis <martin@v.loewis.de>
parents: 28694
diff changeset
312 #if defined(Py_DEBUG) && defined(WITH_THREAD)
37606
f448d0075691 more low-hanging fruit to make code compile under a C++ compiler. Not
Anthony Baxter <anthonybaxter@gmail.com>
parents: 36683
diff changeset
313 if (newts) {
39830
0bac40e4d0c6 Forward-port of rev. 51857:
Georg Brandl <georg@python.org>
parents: 39431
diff changeset
314 /* This can be called from PyEval_RestoreThread(). Similar
0bac40e4d0c6 Forward-port of rev. 51857:
Georg Brandl <georg@python.org>
parents: 39431
diff changeset
315 to it, we need to ensure errno doesn't change.
0bac40e4d0c6 Forward-port of rev. 51857:
Georg Brandl <georg@python.org>
parents: 39431
diff changeset
316 */
0bac40e4d0c6 Forward-port of rev. 51857:
Georg Brandl <georg@python.org>
parents: 39431
diff changeset
317 int err = errno;
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
318 PyThreadState *check = PyGILState_GetThisThreadState();
37606
f448d0075691 more low-hanging fruit to make code compile under a C++ compiler. Not
Anthony Baxter <anthonybaxter@gmail.com>
parents: 36683
diff changeset
319 if (check && check->interp == newts->interp && check != newts)
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
320 Py_FatalError("Invalid thread state for this thread");
39830
0bac40e4d0c6 Forward-port of rev. 51857:
Georg Brandl <georg@python.org>
parents: 39431
diff changeset
321 errno = err;
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
322 }
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
323 #endif
37606
f448d0075691 more low-hanging fruit to make code compile under a C++ compiler. Not
Anthony Baxter <anthonybaxter@gmail.com>
parents: 36683
diff changeset
324 return oldts;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents:
diff changeset
325 }
7970
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
326
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
327 /* An extension mechanism to store arbitrary additional per-thread state.
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
328 PyThreadState_GetDict() returns a dictionary that can be used to hold such
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
329 state; the caller should pick a unique key and store its state there. If
28616
4f0b7acffc7d - pythunrun.c, Py_Finalize(): move the call to _Py_PrintReferences()
Guido van Rossum <guido@python.org>
parents: 28325
diff changeset
330 PyThreadState_GetDict() returns NULL, an exception has *not* been raised
4f0b7acffc7d - pythunrun.c, Py_Finalize(): move the call to _Py_PrintReferences()
Guido van Rossum <guido@python.org>
parents: 28325
diff changeset
331 and the caller should assume no per-thread state is available. */
7970
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
332
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
333 PyObject *
13658
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
334 PyThreadState_GetDict(void)
7970
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
335 {
9667
914f83e7fa0a Make current_tstate a global, _PyThreadState_Current. This is to
Guido van Rossum <guido@python.org>
parents: 7970
diff changeset
336 if (_PyThreadState_Current == NULL)
28616
4f0b7acffc7d - pythunrun.c, Py_Finalize(): move the call to _Py_PrintReferences()
Guido van Rossum <guido@python.org>
parents: 28325
diff changeset
337 return NULL;
7970
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
338
28616
4f0b7acffc7d - pythunrun.c, Py_Finalize(): move the call to _Py_PrintReferences()
Guido van Rossum <guido@python.org>
parents: 28325
diff changeset
339 if (_PyThreadState_Current->dict == NULL) {
4f0b7acffc7d - pythunrun.c, Py_Finalize(): move the call to _Py_PrintReferences()
Guido van Rossum <guido@python.org>
parents: 28325
diff changeset
340 PyObject *d;
4f0b7acffc7d - pythunrun.c, Py_Finalize(): move the call to _Py_PrintReferences()
Guido van Rossum <guido@python.org>
parents: 28325
diff changeset
341 _PyThreadState_Current->dict = d = PyDict_New();
4f0b7acffc7d - pythunrun.c, Py_Finalize(): move the call to _Py_PrintReferences()
Guido van Rossum <guido@python.org>
parents: 28325
diff changeset
342 if (d == NULL)
4f0b7acffc7d - pythunrun.c, Py_Finalize(): move the call to _Py_PrintReferences()
Guido van Rossum <guido@python.org>
parents: 28325
diff changeset
343 PyErr_Clear();
4f0b7acffc7d - pythunrun.c, Py_Finalize(): move the call to _Py_PrintReferences()
Guido van Rossum <guido@python.org>
parents: 28325
diff changeset
344 }
9667
914f83e7fa0a Make current_tstate a global, _PyThreadState_Current. This is to
Guido van Rossum <guido@python.org>
parents: 7970
diff changeset
345 return _PyThreadState_Current->dict;
7970
4ceee1ef99b0 /* An extension mechanism to store arbitrary additional per-thread state.
Guido van Rossum <guido@python.org>
parents: 6549
diff changeset
346 }
18733
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
347
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
348
29643
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
349 /* Asynchronously raise an exception in a thread.
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
350 Requested by Just van Rossum and Alex Martelli.
34568
ff3ca656c281 Backport 2.39:
Guido van Rossum <guido@python.org>
parents: 33940
diff changeset
351 To prevent naive misuse, you must write your own extension
39431
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
352 to call this, or use ctypes. Must be called with the GIL held.
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
353 Returns the number of tstates modified (normally 1, but 0 if `id` didn't
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
354 match any known thread id). Can be called with exc=NULL to clear an
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
355 existing async exception. This raises no exceptions. */
29643
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
356
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
357 int
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
358 PyThreadState_SetAsyncExc(long id, PyObject *exc) {
31797
846b3ee7e106 Changed random calls to PyThreadState_Get() to use the macro
Nicholas Bastin <nick.bastin@gmail.com>
parents: 29842
diff changeset
359 PyThreadState *tstate = PyThreadState_GET();
29643
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
360 PyInterpreterState *interp = tstate->interp;
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
361 PyThreadState *p;
39431
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
362
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
363 /* Although the GIL is held, a few C API functions can be called
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
364 * without the GIL held, and in particular some that create and
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
365 * destroy thread and interpreter states. Those can mutate the
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
366 * list of thread states we're traversing, so to prevent that we lock
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
367 * head_mutex for the duration.
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
368 */
34568
ff3ca656c281 Backport 2.39:
Guido van Rossum <guido@python.org>
parents: 33940
diff changeset
369 HEAD_LOCK();
29643
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
370 for (p = interp->tstate_head; p != NULL; p = p->next) {
39431
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
371 if (p->thread_id == id) {
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
372 /* Tricky: we need to decref the current value
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
373 * (if any) in p->async_exc, but that can in turn
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
374 * allow arbitrary Python code to run, including
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
375 * perhaps calls to this function. To prevent
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
376 * deadlock, we need to release head_mutex before
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
377 * the decref.
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
378 */
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
379 PyObject *old_exc = p->async_exc;
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
380 Py_XINCREF(exc);
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
381 p->async_exc = exc;
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
382 HEAD_UNLOCK();
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
383 Py_XDECREF(old_exc);
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
384 return 1;
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
385 }
29643
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
386 }
34568
ff3ca656c281 Backport 2.39:
Guido van Rossum <guido@python.org>
parents: 33940
diff changeset
387 HEAD_UNLOCK();
39431
de9e1a5dca93 Followup to bug #1069160.
Tim Peters <tim.peters@gmail.com>
parents: 39129
diff changeset
388 return 0;
29643
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
389 }
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
390
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
391
18733
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
392 /* Routines for advanced debuggers, requested by David Beazley.
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
393 Don't use unless you know what you are doing! */
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
394
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
395 PyInterpreterState *
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
396 PyInterpreterState_Head(void)
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
397 {
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
398 return interp_head;
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
399 }
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
400
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
401 PyInterpreterState *
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
402 PyInterpreterState_Next(PyInterpreterState *interp) {
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
403 return interp->next;
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
404 }
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
405
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
406 PyThreadState *
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
407 PyInterpreterState_ThreadHead(PyInterpreterState *interp) {
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
408 return interp->tstate_head;
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
409 }
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
410
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
411 PyThreadState *
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
412 PyThreadState_Next(PyThreadState *tstate) {
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
413 return tstate->next;
b0329649b8cf Add a low-level API to access interpreters, for David Beazley.
Guido van Rossum <guido@python.org>
parents: 18689
diff changeset
414 }
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
415
39118
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
416 /* The implementation of sys._current_frames(). This is intended to be
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
417 called with the GIL held, as it will be when called via
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
418 sys._current_frames(). It's possible it would work fine even without
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
419 the GIL held, but haven't thought enough about that.
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
420 */
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
421 PyObject *
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
422 _PyThread_CurrentFrames(void)
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
423 {
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
424 PyObject *result;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
425 PyInterpreterState *i;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
426
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
427 result = PyDict_New();
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
428 if (result == NULL)
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
429 return NULL;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
430
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
431 /* for i in all interpreters:
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
432 * for t in all of i's thread states:
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
433 * if t's frame isn't NULL, map t's id to its frame
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
434 * Because these lists can mutute even when the GIL is held, we
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
435 * need to grab head_mutex for the duration.
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
436 */
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
437 HEAD_LOCK();
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
438 for (i = interp_head; i != NULL; i = i->next) {
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
439 PyThreadState *t;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
440 for (t = i->tstate_head; t != NULL; t = t->next) {
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
441 PyObject *id;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
442 int stat;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
443 struct _frame *frame = t->frame;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
444 if (frame == NULL)
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
445 continue;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
446 id = PyInt_FromLong(t->thread_id);
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
447 if (id == NULL)
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
448 goto Fail;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
449 stat = PyDict_SetItem(result, id, (PyObject *)frame);
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
450 Py_DECREF(id);
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
451 if (stat < 0)
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
452 goto Fail;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
453 }
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
454 }
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
455 HEAD_UNLOCK();
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
456 return result;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
457
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
458 Fail:
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
459 HEAD_UNLOCK();
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
460 Py_DECREF(result);
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
461 return NULL;
85b23965ec4c SF bug 1524317: configure --without-threads fails to build
Tim Peters <tim.peters@gmail.com>
parents: 39056
diff changeset
462 }
29643
fa97293533a9 Add PyThreadState_SetAsyncExc(long, PyObject *).
Guido van Rossum <guido@python.org>
parents: 28914
diff changeset
463
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
464 /* Python "auto thread state" API. */
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
465 #ifdef WITH_THREAD
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
466
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
467 /* Keep this as a static, as it is not reliable! It can only
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
468 ever be compared to the state for the *current* thread.
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
469 * If not equal, then it doesn't matter that the actual
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
470 value may change immediately after comparison, as it can't
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
471 possibly change to the current thread's state.
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
472 * If equal, then the current thread holds the lock, so the value can't
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
473 change until we yield the lock.
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
474 */
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
475 static int
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
476 PyThreadState_IsCurrent(PyThreadState *tstate)
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
477 {
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
478 /* Must be the tstate for this thread */
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
479 assert(PyGILState_GetThisThreadState()==tstate);
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
480 /* On Windows at least, simple reads and writes to 32 bit values
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
481 are atomic.
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
482 */
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
483 return tstate == _PyThreadState_Current;
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
484 }
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
485
33698
090ffcb83f0a Trim trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 32301
diff changeset
486 /* Internal initialization/finalization functions called by
090ffcb83f0a Trim trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 32301
diff changeset
487 Py_Initialize/Py_Finalize
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
488 */
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
489 void
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
490 _PyGILState_Init(PyInterpreterState *i, PyThreadState *t)
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
491 {
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
492 assert(i && t); /* must init with valid states */
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
493 autoTLSkey = PyThread_create_key();
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
494 autoInterpreterState = i;
33706
4981ba54f43d _PyGILState_Init(), PyGILState_Ensure(): Since PyThread_set_key_value()
Tim Peters <tim.peters@gmail.com>
parents: 33699
diff changeset
495 assert(PyThread_get_key_value(autoTLSkey) == NULL);
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
496 assert(t->gilstate_counter == 0);
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
497
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
498 _PyGILState_NoteThreadState(t);
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
499 }
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
500
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
501 void
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
502 _PyGILState_Fini(void)
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
503 {
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
504 PyThread_delete_key(autoTLSkey);
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
505 autoTLSkey = 0;
39885
603cde5ed1eb Backport rev. 51987: superfluous semicola.
Georg Brandl <georg@python.org>
parents: 39830
diff changeset
506 autoInterpreterState = NULL;
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
507 }
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
508
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
509 /* When a thread state is created for a thread by some mechanism other than
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
510 PyGILState_Ensure, it's important that the GILState machinery knows about
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
511 it so it doesn't try to create another thread state for the thread (this is
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
512 a better fix for SF bug #1010677 than the first one attempted).
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
513 */
39830
0bac40e4d0c6 Forward-port of rev. 51857:
Georg Brandl <georg@python.org>
parents: 39431
diff changeset
514 static void
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
515 _PyGILState_NoteThreadState(PyThreadState* tstate)
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
516 {
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
517 /* If autoTLSkey is 0, this must be the very first threadstate created
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
518 in Py_Initialize(). Don't do anything for now (we'll be back here
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
519 when _PyGILState_Init is called). */
39056
b6fd499e4343 After approval from Anthony, merge the tim-current_frames
Tim Peters <tim.peters@gmail.com>
parents: 37752
diff changeset
520 if (!autoTLSkey)
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
521 return;
39056
b6fd499e4343 After approval from Anthony, merge the tim-current_frames
Tim Peters <tim.peters@gmail.com>
parents: 37752
diff changeset
522
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
523 /* Stick the thread state for this thread in thread local storage.
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
524
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
525 The only situation where you can legitimately have more than one
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
526 thread state for an OS level thread is when there are multiple
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
527 interpreters, when:
39056
b6fd499e4343 After approval from Anthony, merge the tim-current_frames
Tim Peters <tim.peters@gmail.com>
parents: 37752
diff changeset
528
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
529 a) You shouldn't really be using the PyGILState_ APIs anyway,
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
530 and:
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
531
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
532 b) The slightly odd way PyThread_set_key_value works (see
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
533 comments by its implementation) means that the first thread
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
534 state created for that given OS level thread will "win",
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
535 which seems reasonable behaviour.
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
536 */
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
537 if (PyThread_set_key_value(autoTLSkey, (void *)tstate) < 0)
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
538 Py_FatalError("Couldn't create autoTLSkey mapping");
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
539
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
540 /* PyGILState_Release must not try to delete this thread state. */
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
541 tstate->gilstate_counter = 1;
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
542 }
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
543
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
544 /* The public functions */
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
545 PyThreadState *
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
546 PyGILState_GetThisThreadState(void)
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
547 {
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
548 if (autoInterpreterState == NULL || autoTLSkey == 0)
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
549 return NULL;
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
550 return (PyThreadState *)PyThread_get_key_value(autoTLSkey);
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
551 }
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
552
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
553 PyGILState_STATE
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
554 PyGILState_Ensure(void)
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
555 {
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
556 int current;
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
557 PyThreadState *tcur;
33698
090ffcb83f0a Trim trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 32301
diff changeset
558 /* Note that we do not auto-init Python here - apart from
090ffcb83f0a Trim trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 32301
diff changeset
559 potential races with 2 threads auto-initializing, pep-311
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
560 spells out other issues. Embedders are expected to have
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
561 called Py_Initialize() and usually PyEval_InitThreads().
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
562 */
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
563 assert(autoInterpreterState); /* Py_Initialize() hasn't been called! */
37606
f448d0075691 more low-hanging fruit to make code compile under a C++ compiler. Not
Anthony Baxter <anthonybaxter@gmail.com>
parents: 36683
diff changeset
564 tcur = (PyThreadState *)PyThread_get_key_value(autoTLSkey);
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
565 if (tcur == NULL) {
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
566 /* Create a new thread state for this thread */
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
567 tcur = PyThreadState_New(autoInterpreterState);
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
568 if (tcur == NULL)
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
569 Py_FatalError("Couldn't create thread-state for new thread");
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
570 /* This is our thread state! We'll need to delete it in the
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
571 matching call to PyGILState_Release(). */
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35095
diff changeset
572 tcur->gilstate_counter = 0;
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
573 current = 0; /* new thread state is never current */
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
574 }
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
575 else
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
576 current = PyThreadState_IsCurrent(tcur);
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
577 if (current == 0)
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
578 PyEval_RestoreThread(tcur);
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
579 /* Update our counter in the thread-state - no need for locks:
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
580 - tcur will remain valid as we hold the GIL.
33698
090ffcb83f0a Trim trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 32301
diff changeset
581 - the counter is safe as we are the only thread "allowed"
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
582 to modify this value
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
583 */
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
584 ++tcur->gilstate_counter;
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
585 return current ? PyGILState_LOCKED : PyGILState_UNLOCKED;
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
586 }
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
587
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
588 void
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
589 PyGILState_Release(PyGILState_STATE oldstate)
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
590 {
37606
f448d0075691 more low-hanging fruit to make code compile under a C++ compiler. Not
Anthony Baxter <anthonybaxter@gmail.com>
parents: 36683
diff changeset
591 PyThreadState *tcur = (PyThreadState *)PyThread_get_key_value(
f448d0075691 more low-hanging fruit to make code compile under a C++ compiler. Not
Anthony Baxter <anthonybaxter@gmail.com>
parents: 36683
diff changeset
592 autoTLSkey);
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
593 if (tcur == NULL)
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
594 Py_FatalError("auto-releasing thread-state, "
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
595 "but no thread-state for this thread");
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
596 /* We must hold the GIL and have our thread state current */
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
597 /* XXX - remove the check - the assert should be fine,
33698
090ffcb83f0a Trim trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 32301
diff changeset
598 but while this is very new (April 2003), the extra check
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
599 by release-only users can't hurt.
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
600 */
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
601 if (! PyThreadState_IsCurrent(tcur))
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
602 Py_FatalError("This thread state must be current when releasing");
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
603 assert(PyThreadState_IsCurrent(tcur));
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
604 --tcur->gilstate_counter;
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
605 assert(tcur->gilstate_counter >= 0); /* illegal counter value */
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
606
33940
dfd07b7be407 SF bug 1061968: threads: segfault or Py_FatalError at exit
Tim Peters <tim.peters@gmail.com>
parents: 33714
diff changeset
607 /* If we're going to destroy this thread-state, we must
dfd07b7be407 SF bug 1061968: threads: segfault or Py_FatalError at exit
Tim Peters <tim.peters@gmail.com>
parents: 33714
diff changeset
608 * clear it while the GIL is held, as destructors may run.
dfd07b7be407 SF bug 1061968: threads: segfault or Py_FatalError at exit
Tim Peters <tim.peters@gmail.com>
parents: 33714
diff changeset
609 */
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
610 if (tcur->gilstate_counter == 0) {
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
611 /* can't have been locked when we created it */
33699
0c26db381673 Style guide & consistency changes. No semantic changes.
Tim Peters <tim.peters@gmail.com>
parents: 33698
diff changeset
612 assert(oldstate == PyGILState_UNLOCKED);
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
613 PyThreadState_Clear(tcur);
33940
dfd07b7be407 SF bug 1061968: threads: segfault or Py_FatalError at exit
Tim Peters <tim.peters@gmail.com>
parents: 33714
diff changeset
614 /* Delete the thread-state. Note this releases the GIL too!
dfd07b7be407 SF bug 1061968: threads: segfault or Py_FatalError at exit
Tim Peters <tim.peters@gmail.com>
parents: 33714
diff changeset
615 * It's vital that the GIL be held here, to avoid shutdown
dfd07b7be407 SF bug 1061968: threads: segfault or Py_FatalError at exit
Tim Peters <tim.peters@gmail.com>
parents: 33714
diff changeset
616 * races; see bugs 225673 and 1061968 (that nasty bug has a
dfd07b7be407 SF bug 1061968: threads: segfault or Py_FatalError at exit
Tim Peters <tim.peters@gmail.com>
parents: 33714
diff changeset
617 * habit of coming back).
dfd07b7be407 SF bug 1061968: threads: segfault or Py_FatalError at exit
Tim Peters <tim.peters@gmail.com>
parents: 33714
diff changeset
618 */
dfd07b7be407 SF bug 1061968: threads: segfault or Py_FatalError at exit
Tim Peters <tim.peters@gmail.com>
parents: 33714
diff changeset
619 PyThreadState_DeleteCurrent();
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
620 }
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
621 /* Release the lock if necessary */
33940
dfd07b7be407 SF bug 1061968: threads: segfault or Py_FatalError at exit
Tim Peters <tim.peters@gmail.com>
parents: 33714
diff changeset
622 else if (oldstate == PyGILState_UNLOCKED)
34928
9857daa22807 Backport my recent fix (rev. 2.40 of Python/pystate.c):
Michael W. Hudson <mwh@python.net>
parents: 34568
diff changeset
623 PyEval_SaveThread();
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
624 }
37655
2f3f2e32dfd9 spread the extern "C" { } magic pixie dust around. Python itself builds now
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37606
diff changeset
625
2f3f2e32dfd9 spread the extern "C" { } magic pixie dust around. Python itself builds now
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37606
diff changeset
626 #ifdef __cplusplus
2f3f2e32dfd9 spread the extern "C" { } magic pixie dust around. Python itself builds now
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37606
diff changeset
627 }
2f3f2e32dfd9 spread the extern "C" { } magic pixie dust around. Python itself builds now
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37606
diff changeset
628 #endif
2f3f2e32dfd9 spread the extern "C" { } magic pixie dust around. Python itself builds now
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37606
diff changeset
629
28694
a4154dd5939a New PyGILState_ API - implements pep 311, from patch 684256.
Mark Hammond <mhammond@skippinet.com.au>
parents: 28616
diff changeset
630 #endif /* WITH_THREAD */
37655
2f3f2e32dfd9 spread the extern "C" { } magic pixie dust around. Python itself builds now
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37606
diff changeset
631
2f3f2e32dfd9 spread the extern "C" { } magic pixie dust around. Python itself builds now
Anthony Baxter <anthonybaxter@gmail.com>
parents: 37606
diff changeset
632