Python/thread.c

   1
   2 /* Thread package.
   3    This is intended to be usable independently from Python.
   4    The implementation for system foobar is in a file thread_foobar.h
   5    which is included by this file dependent on config settings.
   6    Stuff shared by all thread_*.h files is collected here. */
   7
   8 #include "Python.h"
   9
  10 /* pyconfig.h may or may not define DL_IMPORT */
  11 #ifndef DL_IMPORT       /* declarations for DLL import/export */
  12 #define DL_IMPORT(RTYPE) RTYPE
  13 #endif
  14
  15 #ifndef DONT_HAVE_STDIO_H
  16 #include <stdio.h>
  17 #endif
  18
  19 #ifdef HAVE_STDLIB_H
  20 #include <stdlib.h>
  21 #else
  22 #ifdef Py_DEBUG
  23 extern char *getenv(const char *);
  24 #endif
  25 #endif
  26
  27 #ifdef __DGUX
  28 #define _USING_POSIX4A_DRAFT6
  29 #endif
  30
  31 #ifdef __sgi
  32 #ifndef HAVE_PTHREAD_H /* XXX Need to check in configure.in */
  33 #undef _POSIX_THREADS
  34 #endif
  35 #endif
  36
  37 #include "pythread.h"
  38
  39 #ifdef __ksr__
  40 #define _POSIX_THREADS
  41 #endif
  42
  43 #ifndef _POSIX_THREADS
  44
  45 #ifdef __sgi
  46 #define SGI_THREADS
  47 #endif
  48
  49 #ifdef HAVE_THREAD_H
  50 #define SOLARIS_THREADS
  51 #endif
  52
  53 #if defined(sun) && !defined(SOLARIS_THREADS)
  54 #define SUN_LWP
  55 #endif
  56
  57 #if defined(__MWERKS__) && !defined(__BEOS__)
  58 #define _POSIX_THREADS
  59 #endif
  60
  61 #endif /* _POSIX_THREADS */
  62
  63
  64 #ifdef Py_DEBUG
  65 static int thread_debug = 0;
  66 #define dprintf(args)   ((thread_debug & 1) && printf args)
  67 #define d2printf(args)  ((thread_debug & 8) && printf args)
  68 #else
  69 #define dprintf(args)
  70 #define d2printf(args)
  71 #endif
  72
  73 static int initialized;
  74
  75 static void PyThread__init_thread(void); /* Forward */
  76
  77 void PyThread_init_thread(void)
  78 {
  79 #ifdef Py_DEBUG
  80         char *p = getenv("THREADDEBUG");
  81
  82         if (p) {
  83                 if (*p)
  84                         thread_debug = atoi(p);
  85                 else
  86                         thread_debug = 1;
  87         }
  88 #endif /* Py_DEBUG */
  89         if (initialized)
  90                 return;
  91         initialized = 1;
  92         dprintf(("PyThread_init_thread called\n"));
  93         PyThread__init_thread();
  94 }
  95
  96 #ifdef SGI_THREADS
  97 #include "thread_sgi.h"
  98 #endif
  99
 100 #ifdef SOLARIS_THREADS
 101 #include "thread_solaris.h"
 102 #endif
 103
 104 #ifdef SUN_LWP
 105 #include "thread_lwp.h"
 106 #endif
 107
 108 #ifdef HAVE_PTH
 109 #include "thread_pth.h"
 110 #endif
 111
 112 #ifdef _POSIX_THREADS
 113 #include "thread_pthread.h"
 114 #endif
 115
 116 #ifdef C_THREADS
 117 #include "thread_cthread.h"
 118 #endif
 119
 120 #ifdef NT_THREADS
 121 #include "thread_nt.h"
 122 #endif
 123
 124 #ifdef OS2_THREADS
 125 #include "thread_os2.h"
 126 #endif
 127
 128 #ifdef BEOS_THREADS
 129 #include "thread_beos.h"
 130 #endif
 131
 132 #ifdef WINCE_THREADS
 133 #include "thread_wince.h"
 134 #endif
 135
 136 /*
 137 #ifdef FOOBAR_THREADS
 138 #include "thread_foobar.h"
 139 #endif
 140 */