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annotate Python/thread.c @ 1848:b724599401ff legacy-trunk

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Merge back to main trunk
author Guido van Rossum <guido@python.org>
date Tue, 30 Aug 1994 08:27:36 +0000
parents b1bb74a2b593
children d0d0a69b5ca3
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1 /***********************************************************
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2 Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
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3 Amsterdam, The Netherlands.
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4
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5 All Rights Reserved
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6
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7 Permission to use, copy, modify, and distribute this software and its
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8 documentation for any purpose and without fee is hereby granted,
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9 provided that the above copyright notice appear in all copies and that
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10 both that copyright notice and this permission notice appear in
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11 supporting documentation, and that the names of Stichting Mathematisch
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12 Centrum or CWI not be used in advertising or publicity pertaining to
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13 distribution of the software without specific, written prior permission.
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14
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15 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
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16 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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17 FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
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18 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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21 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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22
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23 ******************************************************************/
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24
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25 /* Thread package.
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26 This is intended to be usable independently from Python.
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27 The implementation for system foobar is in a file thread_foobar.h
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28 which is included by this file dependent on config settings.
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29 Stuff shared by all thread_*.h files is collected here. */
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30
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31 #ifdef HAVE_CONFIG_H
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32 #include "config.h"
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33 #endif
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34
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35 #include <stdio.h>
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36
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37 #ifdef HAVE_STDLIB_H
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38 #include <stdlib.h>
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39 #else
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40 extern char *getenv();
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41 #endif
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42
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43 #include "thread.h"
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44
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45 #ifdef __ksr__
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46 #define _POSIX_THREADS
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47 #endif
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48
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49 #ifndef _POSIX_THREADS
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50
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51 #ifdef __sgi
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52 #define SGI_THREADS
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53 #endif
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54
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55 #ifdef HAVE_THREAD_H
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56 #define SOLARIS_THREADS
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57 #endif
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58
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59 #if defined(sun) && !defined(SOLARIS_THREADS)
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60 #define SUN_LWP
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61 #endif
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62
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63 #endif /* _POSIX_THREADS */
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64
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65 #ifdef __STDC__
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66 #define _P(args) args
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67 #define _P0() (void)
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68 #define _P1(v,t) (t)
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69 #define _P2(v1,t1,v2,t2) (t1,t2)
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70 #else
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71 #define _P(args) ()
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72 #define _P0() ()
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73 #define _P1(v,t) (v) t;
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74 #define _P2(v1,t1,v2,t2) (v1,v2) t1; t2;
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75 #endif /* __STDC__ */
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76
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77 #ifdef DEBUG
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78 static int thread_debug = 0;
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79 #define dprintf(args) ((thread_debug & 1) && printf args)
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80 #define d2printf(args) ((thread_debug & 8) && printf args)
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81 #else
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82 #define dprintf(args)
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83 #define d2printf(args)
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84 #endif
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85
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86 static int initialized;
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87
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88 static void _init_thread(); /* Forward */
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89
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90 void init_thread _P0()
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91 {
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92 #ifdef DEBUG
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93 char *p = getenv("THREADDEBUG");
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94
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95 if (p) {
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96 if (*p)
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97 thread_debug = atoi(p);
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98 else
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99 thread_debug = 1;
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100 }
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101 #endif /* DEBUG */
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102 if (initialized)
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103 return;
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104 initialized = 1;
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105 dprintf(("init_thread called\n"));
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106 _init_thread();
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107 }
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108
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109 #ifdef SGI_THREADS
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110 #include "thread_sgi.h"
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111 #endif
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112
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113 #ifdef SOLARIS_THREADS
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114 #include "thread_solaris.h"
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115 #endif
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116
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117 #ifdef SUN_LWP
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118 #include "thread_lwp.h"
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119 #endif
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120
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121 #ifdef _POSIX_THREADS
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122 #include "thread_pthread.h"
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123 #endif
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124
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125 #ifdef C_THREADS
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126 #include "thread_cthread.h"
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127 #endif
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128
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129 /*
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130 #ifdef FOOBAR_THREADS
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131 #include "thread_foobar.h"
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132 #endif
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133 */