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 "config.h"
   9
  10 /* config.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 HAVE_UNISTD_H
  28 #include <unistd.h>
  29 #endif
  30
  31 #ifdef __DGUX
  32 #define _USING_POSIX4A_DRAFT6
  33 #endif
  34
  35 #ifdef __sgi
  36 #ifndef HAVE_PTHREAD_H /* XXX Need to check in configure.in */
  37 #undef _POSIX_THREADS
  38 #endif
  39 #endif
  40
  41 #include "pythread.h"
  42
  43 #ifdef __ksr__
  44 #define _POSIX_THREADS
  45 #endif
  46
  47 #ifndef _POSIX_THREADS
  48
  49 #ifdef __sgi
  50 #define SGI_THREADS
  51 #endif
  52
  53 #ifdef HAVE_THREAD_H
  54 #define SOLARIS_THREADS
  55 #endif
  56
  57 #if defined(sun) && !defined(SOLARIS_THREADS)
  58 #define SUN_LWP
  59 #endif
  60
  61 #if defined(__MWERKS__) && !defined(__BEOS__)
  62 #define _POSIX_THREADS
  63 #endif
  64
  65 #endif /* _POSIX_THREADS */
  66
  67
  68 #ifdef Py_DEBUG
  69 static int thread_debug = 0;
  70 #define dprintf(args)   ((thread_debug & 1) && printf args)
  71 #define d2printf(args)  ((thread_debug & 8) && printf args)
  72 #else
  73 #define dprintf(args)
  74 #define d2printf(args)
  75 #endif
  76
  77 static int initialized;
  78
  79 static void PyThread__init_thread(void); /* Forward */
  80
  81 void PyThread_init_thread(void)
  82 {
  83 #ifdef Py_DEBUG
  84         char *p = getenv("THREADDEBUG");
  85
  86         if (p) {
  87                 if (*p)
  88                         thread_debug = atoi(p);
  89                 else
  90                         thread_debug = 1;
  91         }
  92 #endif /* Py_DEBUG */
  93         if (initialized)
  94                 return;
  95         initialized = 1;
  96         dprintf(("PyThread_init_thread called\n"));
  97         PyThread__init_thread();
  98 }
  99
 100 #ifdef SGI_THREADS
 101 #include "thread_sgi.h"
 102 #endif
 103
 104 #ifdef SOLARIS_THREADS
 105 #include "thread_solaris.h"
 106 #endif
 107
 108 #ifdef SUN_LWP
 109 #include "thread_lwp.h"
 110 #endif
 111
 112 #ifdef HAVE_PTH
 113 #include "thread_pth.h"
 114 #undef _POSIX_THREADS
 115 #endif
 116
 117 #ifdef _POSIX_THREADS
 118 #include "thread_pthread.h"
 119 #endif
 120
 121 #ifdef C_THREADS
 122 #include "thread_cthread.h"
 123 #endif
 124
 125 #ifdef NT_THREADS
 126 #include "thread_nt.h"
 127 #endif
 128
 129 #ifdef OS2_THREADS
 130 #include "thread_os2.h"
 131 #endif
 132
 133 #ifdef BEOS_THREADS
 134 #include "thread_beos.h"
 135 #endif
 136
 137 #ifdef WINCE_THREADS
 138 #include "thread_wince.h"
 139 #endif
 140
 141 /*
 142 #ifdef FOOBAR_THREADS
 143 #include "thread_foobar.h"
 144 #endif
 145 */