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annotate Python/thread_sgi.h @ 49677:82ccc7e77ec5 2.6

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Merged revisions 66801,66803-66804,66813,66854-66856,66866,66870-66872,66874,66887,66903,66905,66911,66913,66927,66932,66938,66942,66962,66964,66973-66974,66977,66992,66998-66999,67002,67005,67007,67028,67040-67041,67044,67070,67089,67091,67101,67117-67119,67123-67124 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ................ r66801 | andrew.kuchling | 2008-10-04 23:51:59 +0200 (Sat, 04 Oct 2008) | 1 line Punctuation fix; expand dict.update docstring to be clearer ................ r66803 | benjamin.peterson | 2008-10-05 00:15:31 +0200 (Sun, 05 Oct 2008) | 1 line fix typo ................ r66804 | andrew.kuchling | 2008-10-05 02:11:56 +0200 (Sun, 05 Oct 2008) | 1 line #1415508 from Rocky Bernstein: add docstrings for enable_interspersed_args(), disable_interspersed_args() ................ r66813 | andrew.kuchling | 2008-10-06 14:07:04 +0200 (Mon, 06 Oct 2008) | 3 lines Per Greg Ward, optparse is no longer being externally maintained. I'll look at the bugs in the Optik bug tracker and copy them to the Python bug tracker if they're still relevant. ................ r66854 | georg.brandl | 2008-10-08 19:20:20 +0200 (Wed, 08 Oct 2008) | 2 lines #4059: patch up some sqlite docs. ................ r66855 | georg.brandl | 2008-10-08 19:30:55 +0200 (Wed, 08 Oct 2008) | 2 lines #4058: fix some whatsnew markup. ................ r66856 | georg.brandl | 2008-10-08 20:47:17 +0200 (Wed, 08 Oct 2008) | 3 lines #3935: properly support list subclasses in the C impl. of bisect. Patch reviewed by Raymond. ................ r66866 | benjamin.peterson | 2008-10-09 22:54:43 +0200 (Thu, 09 Oct 2008) | 1 line update paragraph about __future__ for 2.6 ................ r66870 | armin.rigo | 2008-10-10 10:40:44 +0200 (Fri, 10 Oct 2008) | 2 lines Typo: "ThreadError" is the name in the C source. ................ r66871 | benjamin.peterson | 2008-10-10 22:38:49 +0200 (Fri, 10 Oct 2008) | 1 line fix a small typo ................ r66872 | benjamin.peterson | 2008-10-10 22:51:37 +0200 (Fri, 10 Oct 2008) | 1 line talk about how you can unzip with zip ................ r66874 | benjamin.peterson | 2008-10-11 00:23:41 +0200 (Sat, 11 Oct 2008) | 1 line PyGILState_Acquire -> PyGILState_Ensure ................ r66887 | benjamin.peterson | 2008-10-13 23:51:40 +0200 (Mon, 13 Oct 2008) | 1 line document how to disable fixers ................ r66903 | benjamin.peterson | 2008-10-15 22:34:09 +0200 (Wed, 15 Oct 2008) | 1 line don't recurse into directories that start with '.' ................ r66905 | benjamin.peterson | 2008-10-15 23:05:55 +0200 (Wed, 15 Oct 2008) | 1 line support the optional line argument for idle ................ r66911 | benjamin.peterson | 2008-10-16 01:10:28 +0200 (Thu, 16 Oct 2008) | 41 lines Merged revisions 66805,66841,66860,66884-66886,66893,66907,66910 via svnmerge from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r66805 | benjamin.peterson | 2008-10-04 20:11:02 -0500 (Sat, 04 Oct 2008) | 1 line mention what the fixes directory is for ........ r66841 | benjamin.peterson | 2008-10-07 17:48:12 -0500 (Tue, 07 Oct 2008) | 1 line use assertFalse and assertTrue ........ r66860 | benjamin.peterson | 2008-10-08 16:05:07 -0500 (Wed, 08 Oct 2008) | 1 line instead of abusing the pattern matcher, use start_tree to find a next binding ........ r66884 | benjamin.peterson | 2008-10-13 15:50:30 -0500 (Mon, 13 Oct 2008) | 1 line don't print tokens to stdout when -v is given ........ r66885 | benjamin.peterson | 2008-10-13 16:28:57 -0500 (Mon, 13 Oct 2008) | 1 line add the -x option to disable fixers ........ r66886 | benjamin.peterson | 2008-10-13 16:33:53 -0500 (Mon, 13 Oct 2008) | 1 line cut down on some crud ........ r66893 | benjamin.peterson | 2008-10-14 17:16:54 -0500 (Tue, 14 Oct 2008) | 1 line add an optional set literal fixer ........ r66907 | benjamin.peterson | 2008-10-15 16:59:41 -0500 (Wed, 15 Oct 2008) | 1 line don't write backup files by default ........ r66910 | benjamin.peterson | 2008-10-15 17:43:10 -0500 (Wed, 15 Oct 2008) | 1 line add the -n option; it stops backupfiles from being written ........ ................ r66913 | benjamin.peterson | 2008-10-16 20:52:14 +0200 (Thu, 16 Oct 2008) | 1 line document that deque indexing is O(n) #4123 ................ r66927 | andrew.kuchling | 2008-10-16 22:15:47 +0200 (Thu, 16 Oct 2008) | 1 line Fix wording (2.6.1 backport candidate) ................ r66932 | benjamin.peterson | 2008-10-16 23:09:28 +0200 (Thu, 16 Oct 2008) | 1 line check for error conditions in _json #3623 ................ r66938 | benjamin.peterson | 2008-10-16 23:27:54 +0200 (Thu, 16 Oct 2008) | 1 line fix possible ref leak ................ r66942 | benjamin.peterson | 2008-10-16 23:48:06 +0200 (Thu, 16 Oct 2008) | 1 line fix more possible ref leaks in _json and use Py_CLEAR ................ r66962 | benjamin.peterson | 2008-10-17 22:01:01 +0200 (Fri, 17 Oct 2008) | 1 line clarify CALL_FUNCTION #4141 ................ r66964 | georg.brandl | 2008-10-17 23:41:49 +0200 (Fri, 17 Oct 2008) | 2 lines Fix duplicate word. ................ r66973 | armin.ronacher | 2008-10-19 10:27:43 +0200 (Sun, 19 Oct 2008) | 3 lines Fixed #4067 by implementing _attributes and _fields for the AST root node. ................ r66974 | benjamin.peterson | 2008-10-19 15:59:01 +0200 (Sun, 19 Oct 2008) | 1 line fix compiler warning ................ r66977 | benjamin.peterson | 2008-10-19 21:39:16 +0200 (Sun, 19 Oct 2008) | 1 line mention -n ................ r66992 | benjamin.peterson | 2008-10-21 22:51:13 +0200 (Tue, 21 Oct 2008) | 1 line make sure to call iteritems() ................ r66998 | benjamin.peterson | 2008-10-22 22:57:43 +0200 (Wed, 22 Oct 2008) | 1 line fix a few typos ................ r66999 | benjamin.peterson | 2008-10-22 23:05:30 +0200 (Wed, 22 Oct 2008) | 1 line and another typo... ................ r67002 | hirokazu.yamamoto | 2008-10-23 02:37:33 +0200 (Thu, 23 Oct 2008) | 1 line Issue #4183: Some tests didn't run with pickle.HIGHEST_PROTOCOL. ................ r67005 | walter.doerwald | 2008-10-23 15:11:39 +0200 (Thu, 23 Oct 2008) | 2 lines Use the correct names of the stateless codec functions (Fixes issue 4178). ................ r67007 | benjamin.peterson | 2008-10-23 23:43:48 +0200 (Thu, 23 Oct 2008) | 1 line only nonempty __slots__ don't work ................ r67028 | benjamin.peterson | 2008-10-26 01:27:07 +0200 (Sun, 26 Oct 2008) | 1 line don't use a catch-all ................ r67040 | armin.rigo | 2008-10-28 18:01:21 +0100 (Tue, 28 Oct 2008) | 5 lines Fix one of the tests: it relied on being present in an "output test" in order to actually test what it was supposed to test, i.e. that the code in the __del__ method did not crash. Use instead the new helper test_support.captured_output(). ................ r67041 | benjamin.peterson | 2008-10-29 21:33:00 +0100 (Wed, 29 Oct 2008) | 1 line mention the version gettempdir() was added ................ r67044 | amaury.forgeotdarc | 2008-10-30 00:15:57 +0100 (Thu, 30 Oct 2008) | 3 lines Correct error message in io.open(): closefd=True is the only accepted value with a file name. ................ r67070 | benjamin.peterson | 2008-10-31 21:41:44 +0100 (Fri, 31 Oct 2008) | 1 line rephrase has_key doc ................ r67089 | benjamin.peterson | 2008-11-03 21:43:20 +0100 (Mon, 03 Nov 2008) | 1 line clarify by splitting into multiple paragraphs ................ r67091 | benjamin.peterson | 2008-11-03 23:34:57 +0100 (Mon, 03 Nov 2008) | 1 line move a FileIO test to test_fileio ................ r67101 | georg.brandl | 2008-11-04 21:49:35 +0100 (Tue, 04 Nov 2008) | 2 lines #4167: fix markup glitches. ................ r67117 | georg.brandl | 2008-11-06 11:17:58 +0100 (Thu, 06 Nov 2008) | 2 lines #4268: Use correct module for two toplevel functions. ................ r67118 | georg.brandl | 2008-11-06 11:19:11 +0100 (Thu, 06 Nov 2008) | 2 lines #4267: small fixes in sqlite3 docs. ................ r67119 | georg.brandl | 2008-11-06 11:20:49 +0100 (Thu, 06 Nov 2008) | 2 lines #4245: move Thread section to the top. ................ r67123 | georg.brandl | 2008-11-06 19:49:15 +0100 (Thu, 06 Nov 2008) | 2 lines #4247: add "pass" examples to tutorial. ................ r67124 | andrew.kuchling | 2008-11-06 20:23:02 +0100 (Thu, 06 Nov 2008) | 1 line Fix grammar error; reword two paragraphs ................
author Georg Brandl <georg@python.org>
date Fri, 07 Nov 2008 08:56:27 +0000
parents e20fc1b80205
children e38335d4df91 df5719c298db
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1
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2 #include <stdlib.h>
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3 #include <stdio.h>
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4 #include <signal.h>
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5 #include <sys/types.h>
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6 #include <sys/wait.h>
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7 #include <sys/prctl.h>
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8 #include <ulocks.h>
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9 #include <errno.h>
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11 #define HDR_SIZE 2680 /* sizeof(ushdr_t) */
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12 #define MAXPROC 100 /* max # of threads that can be started */
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14 static usptr_t *shared_arena;
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15 static ulock_t count_lock; /* protection for some variables */
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16 static ulock_t wait_lock; /* lock used to wait for other threads */
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17 static int waiting_for_threads; /* protected by count_lock */
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18 static int nthreads; /* protected by count_lock */
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19 static int exit_status;
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20 #ifndef NO_EXIT_PROG
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21 static int do_exit; /* indicates that the program is to exit */
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22 #endif
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23 static int exiting; /* we're already exiting (for maybe_exit) */
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24 static pid_t my_pid; /* PID of main thread */
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25 static struct pidlist {
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26 pid_t parent;
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27 pid_t child;
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28 } pidlist[MAXPROC]; /* PIDs of other threads; protected by count_lock */
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29 static int maxpidindex; /* # of PIDs in pidlist */
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30
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31 #ifndef NO_EXIT_PROG
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32 /*
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33 * This routine is called as a signal handler when another thread
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34 * exits. When that happens, we must see whether we have to exit as
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35 * well (because of an PyThread_exit_prog()) or whether we should continue on.
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36 */
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37 static void exit_sig(void)
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38 {
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39 d2printf(("exit_sig called\n"));
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40 if (exiting && getpid() == my_pid) {
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41 d2printf(("already exiting\n"));
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42 return;
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43 }
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44 if (do_exit) {
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45 d2printf(("exiting in exit_sig\n"));
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46 #ifdef Py_DEBUG
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47 if ((thread_debug & 8) == 0)
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48 thread_debug &= ~1; /* don't produce debug messages */
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49 #endif
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50 PyThread_exit_thread();
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51 }
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52 }
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54 /*
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55 * This routine is called when a process calls exit(). If that wasn't
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56 * done from the library, we do as if an PyThread_exit_prog() was intended.
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57 */
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58 static void maybe_exit(void)
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59 {
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60 dprintf(("maybe_exit called\n"));
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61 if (exiting) {
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62 dprintf(("already exiting\n"));
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63 return;
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64 }
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65 PyThread_exit_prog(0);
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66 }
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67 #endif /* NO_EXIT_PROG */
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68
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69 /*
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70 * Initialization.
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71 */
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72 static void PyThread__init_thread(void)
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73 {
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74 #ifndef NO_EXIT_PROG
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75 struct sigaction s;
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76 #endif /* NO_EXIT_PROG */
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77 #ifdef USE_DL
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78 long addr, size;
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79 #endif /* USE_DL */
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82 #ifdef USE_DL
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83 if ((size = usconfig(CONF_INITSIZE, 64*1024)) < 0)
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84 perror("usconfig - CONF_INITSIZE (check)");
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85 if (usconfig(CONF_INITSIZE, size) < 0)
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86 perror("usconfig - CONF_INITSIZE (reset)");
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diff changeset
87 addr = (long) dl_getrange(size + HDR_SIZE);
13210
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Fred Drake <fdrake@acm.org>
parents: 9679
diff changeset
88 dprintf(("trying to use addr %p-%p for shared arena\n", addr, addr+size));
1628
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diff changeset
89 errno = 0;
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diff changeset
90 if ((addr = usconfig(CONF_ATTACHADDR, addr)) < 0 && errno != 0)
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diff changeset
91 perror("usconfig - CONF_ATTACHADDR (set)");
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diff changeset
92 #endif /* USE_DL */
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diff changeset
93 if (usconfig(CONF_INITUSERS, 16) < 0)
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diff changeset
94 perror("usconfig - CONF_INITUSERS");
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diff changeset
95 my_pid = getpid(); /* so that we know which is the main thread */
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diff changeset
96 #ifndef NO_EXIT_PROG
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diff changeset
97 atexit(maybe_exit);
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diff changeset
98 s.sa_handler = exit_sig;
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diff changeset
99 sigemptyset(&s.sa_mask);
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diff changeset
100 /*sigaddset(&s.sa_mask, SIGUSR1);*/
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101 s.sa_flags = 0;
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diff changeset
102 sigaction(SIGUSR1, &s, 0);
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103 if (prctl(PR_SETEXITSIG, SIGUSR1) < 0)
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104 perror("prctl - PR_SETEXITSIG");
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diff changeset
105 #endif /* NO_EXIT_PROG */
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diff changeset
106 if (usconfig(CONF_ARENATYPE, US_SHAREDONLY) < 0)
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diff changeset
107 perror("usconfig - CONF_ARENATYPE");
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diff changeset
108 usconfig(CONF_LOCKTYPE, US_DEBUG); /* XXX */
4839
4567e158d20c Rename DEBUG macro to Py_DEBUG
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
109 #ifdef Py_DEBUG
1628
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diff changeset
110 if (thread_debug & 4)
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diff changeset
111 usconfig(CONF_LOCKTYPE, US_DEBUGPLUS);
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diff changeset
112 else if (thread_debug & 2)
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diff changeset
113 usconfig(CONF_LOCKTYPE, US_DEBUG);
4839
4567e158d20c Rename DEBUG macro to Py_DEBUG
Guido van Rossum <guido@python.org>
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diff changeset
114 #endif /* Py_DEBUG */
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115 if ((shared_arena = usinit(tmpnam(0))) == 0)
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diff changeset
116 perror("usinit");
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diff changeset
117 #ifdef USE_DL
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118 if (usconfig(CONF_ATTACHADDR, addr) < 0) /* reset address */
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119 perror("usconfig - CONF_ATTACHADDR (reset)");
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120 #endif /* USE_DL */
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121 if ((count_lock = usnewlock(shared_arena)) == NULL)
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122 perror("usnewlock (count_lock)");
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123 (void) usinitlock(count_lock);
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diff changeset
124 if ((wait_lock = usnewlock(shared_arena)) == NULL)
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diff changeset
125 perror("usnewlock (wait_lock)");
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ff243b0f16ee Trent Mick <trentm@activestate.com>:
Fred Drake <fdrake@acm.org>
parents: 9679
diff changeset
126 dprintf(("arena start: %p, arena size: %ld\n", shared_arena, (long) usconfig(CONF_GETSIZE, shared_arena)));
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127 }
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diff changeset
128
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129 /*
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130 * Thread support.
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diff changeset
131 */
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132
13658
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
133 static void clean_threads(void)
1628
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134 {
1655
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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diff changeset
135 int i, j;
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diff changeset
136 pid_t mypid, pid;
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137
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138 /* clean up any exited threads */
1655
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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diff changeset
139 mypid = getpid();
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140 i = 0;
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diff changeset
141 while (i < maxpidindex) {
1655
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diff changeset
142 if (pidlist[i].parent == mypid && (pid = pidlist[i].child) > 0) {
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143 pid = waitpid(pid, 0, WNOHANG);
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90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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diff changeset
144 if (pid > 0) {
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145 /* a thread has exited */
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diff changeset
146 pidlist[i] = pidlist[--maxpidindex];
1655
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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parents: 1651
diff changeset
147 /* remove references to children of dead proc */
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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diff changeset
148 for (j = 0; j < maxpidindex; j++)
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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parents: 1651
diff changeset
149 if (pidlist[j].parent == pid)
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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diff changeset
150 pidlist[j].child = -1;
1628
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diff changeset
151 continue; /* don't increment i */
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diff changeset
152 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
153 }
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diff changeset
154 i++;
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
155 }
1655
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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diff changeset
156 /* clean up the list */
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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diff changeset
157 i = 0;
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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parents: 1651
diff changeset
158 while (i < maxpidindex) {
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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parents: 1651
diff changeset
159 if (pidlist[i].child == -1) {
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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parents: 1651
diff changeset
160 pidlist[i] = pidlist[--maxpidindex];
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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parents: 1651
diff changeset
161 continue; /* don't increment i */
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
Guido van Rossum <guido@python.org>
parents: 1651
diff changeset
162 }
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
Guido van Rossum <guido@python.org>
parents: 1651
diff changeset
163 i++;
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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parents: 1651
diff changeset
164 }
1628
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diff changeset
165 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
166
20468
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
Guido van Rossum <guido@python.org>
parents: 14375
diff changeset
167 long PyThread_start_new_thread(void (*func)(void *), void *arg)
1628
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diff changeset
168 {
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diff changeset
169 #ifdef USE_DL
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diff changeset
170 long addr, size;
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parents:
diff changeset
171 static int local_initialized = 0;
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diff changeset
172 #endif /* USE_DL */
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diff changeset
173 int success = 0; /* init not needed when SOLARIS_THREADS and */
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parents:
diff changeset
174 /* C_THREADS implemented properly */
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diff changeset
175
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 5405
diff changeset
176 dprintf(("PyThread_start_new_thread called\n"));
1628
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diff changeset
177 if (!initialized)
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 5405
diff changeset
178 PyThread_init_thread();
1628
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diff changeset
179 switch (ussetlock(count_lock)) {
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diff changeset
180 case 0: return 0;
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parents:
diff changeset
181 case -1: perror("ussetlock (count_lock)");
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parents:
diff changeset
182 }
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parents:
diff changeset
183 if (maxpidindex >= MAXPROC)
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parents:
diff changeset
184 success = -1;
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parents:
diff changeset
185 else {
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parents:
diff changeset
186 #ifdef USE_DL
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parents:
diff changeset
187 if (!local_initialized) {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
188 if ((size = usconfig(CONF_INITSIZE, 64*1024)) < 0)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
189 perror("usconfig - CONF_INITSIZE (check)");
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parents:
diff changeset
190 if (usconfig(CONF_INITSIZE, size) < 0)
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parents:
diff changeset
191 perror("usconfig - CONF_INITSIZE (reset)");
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parents:
diff changeset
192 addr = (long) dl_getrange(size + HDR_SIZE);
13210
ff243b0f16ee Trent Mick <trentm@activestate.com>:
Fred Drake <fdrake@acm.org>
parents: 9679
diff changeset
193 dprintf(("trying to use addr %p-%p for sproc\n",
1655
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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parents: 1651
diff changeset
194 addr, addr+size));
1628
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diff changeset
195 errno = 0;
1655
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parents: 1651
diff changeset
196 if ((addr = usconfig(CONF_ATTACHADDR, addr)) < 0 &&
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
Guido van Rossum <guido@python.org>
parents: 1651
diff changeset
197 errno != 0)
1628
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diff changeset
198 perror("usconfig - CONF_ATTACHADDR (set)");
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parents:
diff changeset
199 }
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diff changeset
200 #endif /* USE_DL */
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diff changeset
201 clean_threads();
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parents:
diff changeset
202 if ((success = sproc(func, PR_SALL, arg)) < 0)
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Guido van Rossum <guido@python.org>
parents:
diff changeset
203 perror("sproc");
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Guido van Rossum <guido@python.org>
parents:
diff changeset
204 #ifdef USE_DL
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diff changeset
205 if (!local_initialized) {
1655
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parents: 1651
diff changeset
206 if (usconfig(CONF_ATTACHADDR, addr) < 0)
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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parents: 1651
diff changeset
207 /* reset address */
1628
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diff changeset
208 perror("usconfig - CONF_ATTACHADDR (reset)");
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parents:
diff changeset
209 local_initialized = 1;
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parents:
diff changeset
210 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
211 #endif /* USE_DL */
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Guido van Rossum <guido@python.org>
parents:
diff changeset
212 if (success >= 0) {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
213 nthreads++;
1655
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Guido van Rossum <guido@python.org>
parents: 1651
diff changeset
214 pidlist[maxpidindex].parent = getpid();
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
Guido van Rossum <guido@python.org>
parents: 1651
diff changeset
215 pidlist[maxpidindex++].child = success;
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
Guido van Rossum <guido@python.org>
parents: 1651
diff changeset
216 dprintf(("pidlist[%d] = %d\n",
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217 maxpidindex-1, success));
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218 }
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219 }
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220 if (usunsetlock(count_lock) < 0)
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221 perror("usunsetlock (count_lock)");
20468
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
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diff changeset
222 return success;
1628
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223 }
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224
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225 long PyThread_get_thread_ident(void)
1651
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diff changeset
226 {
7e5f97bab1e6 ceval.c: dict of local mapping is now a tuple
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diff changeset
227 return getpid();
7e5f97bab1e6 ceval.c: dict of local mapping is now a tuple
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diff changeset
228 }
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229
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230 static void do_PyThread_exit_thread(int no_cleanup)
1628
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231 {
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232 dprintf(("PyThread_exit_thread called\n"));
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233 if (!initialized)
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234 if (no_cleanup)
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235 _exit(0);
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236 else
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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237 exit(0);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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238 if (ussetlock(count_lock) < 0)
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239 perror("ussetlock (count_lock)");
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diff changeset
240 nthreads--;
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241 if (getpid() == my_pid) {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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242 /* main thread; wait for other threads to exit */
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243 exiting = 1;
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244 #ifndef NO_EXIT_PROG
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diff changeset
245 if (do_exit) {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
246 int i;
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247
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248 /* notify other threads */
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249 clean_threads();
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diff changeset
250 if (nthreads >= 0) {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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251 dprintf(("kill other threads\n"));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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252 for (i = 0; i < maxpidindex; i++)
1655
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
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diff changeset
253 if (pidlist[i].child > 0)
90ee71a3a13e Fix waiting for children -- save ppid in pidlist as well.
Guido van Rossum <guido@python.org>
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254 (void) kill(pidlist[i].child,
1628
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255 SIGKILL);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
256 _exit(exit_status);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
257 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
258 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
259 #endif /* NO_EXIT_PROG */
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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260 waiting_for_threads = 1;
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
261 if (ussetlock(wait_lock) < 0)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
262 perror("ussetlock (wait_lock)");
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
263 for (;;) {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
264 if (nthreads < 0) {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
265 dprintf(("really exit (%d)\n", exit_status));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
266 if (no_cleanup)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
267 _exit(exit_status);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
268 else
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
269 exit(exit_status);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
270 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
271 if (usunsetlock(count_lock) < 0)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
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272 perror("usunsetlock (count_lock)");
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273 dprintf(("waiting for other threads (%d)\n", nthreads));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
274 if (ussetlock(wait_lock) < 0)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
275 perror("ussetlock (wait_lock)");
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
276 if (ussetlock(count_lock) < 0)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
277 perror("ussetlock (count_lock)");
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
278 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
279 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
280 /* not the main thread */
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
281 if (waiting_for_threads) {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
282 dprintf(("main thread is waiting\n"));
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
283 if (usunsetlock(wait_lock) < 0)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
284 perror("usunsetlock (wait_lock)");
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
285 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
286 #ifndef NO_EXIT_PROG
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
287 else if (do_exit)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
288 (void) kill(my_pid, SIGUSR1);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
289 #endif /* NO_EXIT_PROG */
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
290 if (usunsetlock(count_lock) < 0)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
291 perror("usunsetlock (count_lock)");
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
292 _exit(0);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
293 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
294
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diff changeset
295 void PyThread_exit_thread(void)
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
296 {
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 5405
diff changeset
297 do_PyThread_exit_thread(0);
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
298 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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diff changeset
299
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diff changeset
300 void PyThread__exit_thread(void)
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
301 {
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 5405
diff changeset
302 do_PyThread_exit_thread(1);
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
303 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
304
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
305 #ifndef NO_EXIT_PROG
13658
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diff changeset
306 static void do_PyThread_exit_prog(int status, int no_cleanup)
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
307 {
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 5405
diff changeset
308 dprintf(("PyThread_exit_prog(%d) called\n", status));
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
309 if (!initialized)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
310 if (no_cleanup)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
311 _exit(status);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
312 else
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
313 exit(status);
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
314 do_exit = 1;
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
315 exit_status = status;
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 5405
diff changeset
316 do_PyThread_exit_thread(no_cleanup);
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
317 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
318
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f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
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diff changeset
319 void PyThread_exit_prog(int status)
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
320 {
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 5405
diff changeset
321 do_PyThread_exit_prog(status, 0);
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
322 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
323
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f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
324 void PyThread__exit_prog(int status)
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
325 {
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 5405
diff changeset
326 do_PyThread_exit_prog(status, 1);
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
327 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
328 #endif /* NO_EXIT_PROG */
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
329
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
330 /*
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
331 * Lock support.
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
332 */
13658
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
333 PyThread_type_lock PyThread_allocate_lock(void)
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
334 {
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
335 ulock_t lock;
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
336
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 5405
diff changeset
337 dprintf(("PyThread_allocate_lock called\n"));
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
338 if (!initialized)
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 5405
diff changeset
339 PyThread_init_thread();
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
340
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
341 if ((lock = usnewlock(shared_arena)) == NULL)
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
342 perror("usnewlock");
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
343 (void) usinitlock(lock);
13210
ff243b0f16ee Trent Mick <trentm@activestate.com>:
Fred Drake <fdrake@acm.org>
parents: 9679
diff changeset
344 dprintf(("PyThread_allocate_lock() -> %p\n", lock));
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 5405
diff changeset
345 return (PyThread_type_lock) lock;
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
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parents:
diff changeset
346 }
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
347
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Thomas Wouters <thomas@python.org>
parents: 13256
diff changeset
348 void PyThread_free_lock(PyThread_type_lock lock)
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
parents:
diff changeset
349 {
13210
ff243b0f16ee Trent Mick <trentm@activestate.com>:
Fred Drake <fdrake@acm.org>
parents: 9679
diff changeset
350 dprintf(("PyThread_free_lock(%p) called\n", lock));
1628
a9dd2e1ea5c9 Split thread.c into a number of system-specific files.
Guido van Rossum <guido@python.org>
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351 usfreelock((ulock_t) lock, shared_arena);
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352 }
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353
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354 int PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
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355 {
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356 int success;
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357
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358 dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
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359 errno = 0; /* clear it just in case */
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360 if (waitflag)
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361 success = ussetlock((ulock_t) lock);
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362 else
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363 success = uscsetlock((ulock_t) lock, 1); /* Try it once */
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364 if (success < 0)
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365 perror(waitflag ? "ussetlock" : "uscsetlock");
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366 dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
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367 return success;
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368 }
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369
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370 void PyThread_release_lock(PyThread_type_lock lock)
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371 {
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372 dprintf(("PyThread_release_lock(%p) called\n", lock));
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373 if (usunsetlock((ulock_t) lock) < 0)
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374 perror("usunsetlock");
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375 }