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Trent Mick <trentm@activestate.com>: The common technique for printing out a pointer has been to cast to a long and use the "%lx" printf modifier. This is incorrect on Win64 where casting to a long truncates the pointer. The "%p" formatter should be used instead. The problem as stated by Tim: > Unfortunately, the C committee refused to define what %p conversion "looks > like" -- they explicitly allowed it to be implementation-defined. Older > versions of Microsoft C even stuck a colon in the middle of the address (in > the days of segment+offset addressing)! The result is that the hex value of a pointer will maybe/maybe not have a 0x prepended to it. Notes on the patch: There are two main classes of changes: - in the various repr() functions that print out pointers - debugging printf's in the various thread_*.h files (these are why the patch is large) Closes SourceForge patch #100505.
author Fred Drake <fdrake@acm.org>
date Fri, 30 Jun 2000 15:01:00 +0000
parents 5f454b706156
children 916fb024ce94
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1 /***********************************************************
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2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
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3 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 or Corporation for National Research Initiatives or
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13 CNRI not be used in advertising or publicity pertaining to
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14 distribution of the software without specific, written prior
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15 permission.
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16
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17 While CWI is the initial source for this software, a modified version
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18 is made available by the Corporation for National Research Initiatives
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19 (CNRI) at the Internet address ftp://ftp.python.org.
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20
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21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
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22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
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23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
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24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
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25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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28 PERFORMANCE OF THIS SOFTWARE.
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29
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30 ******************************************************************/
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31
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32 /* This code implemented by Mark Hammond (MHammond@skippinet.com.au) */
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33
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34 #include <windows.h>
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35 #include <limits.h>
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36 #include <pydebug.h>
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37
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38 long PyThread_get_thread_ident(void);
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39
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40 /*
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41 * Change all headers to pure ANSI as no one will use K&R style on an
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42 * NT
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43 */
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44
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45 /*
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46 * Initialization of the C package, should not be needed.
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47 */
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48 static void PyThread__init_thread(void)
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49 {
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50 }
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51
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52 /*
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53 * Thread support.
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54 */
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55 int PyThread_start_new_thread(void (*func)(void *), void *arg)
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56 {
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57 long rv;
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58 int success = 0;
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59
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60 dprintf(("%ld: PyThread_start_new_thread called\n", PyThread_get_thread_ident()));
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61 if (!initialized)
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62 PyThread_init_thread();
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63
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64 rv = _beginthread(func, 0, arg); /* use default stack size */
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65
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66 if (rv != -1) {
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67 success = 1;
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68 dprintf(("%ld: PyThread_start_new_thread succeeded:\n", PyThread_get_thread_ident()));
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69 }
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70
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71 return success;
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72 }
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73
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74 /*
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75 * Return the thread Id instead of an handle. The Id is said to uniquely identify the
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76 * thread in the system
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77 */
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78 long PyThread_get_thread_ident(void)
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79 {
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80 if (!initialized)
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81 PyThread_init_thread();
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82
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83 return GetCurrentThreadId();
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84 }
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85
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86 static void do_PyThread_exit_thread(int no_cleanup)
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87 {
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88 dprintf(("%ld: do_PyThread_exit_thread called\n", PyThread_get_thread_ident()));
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89 if (!initialized)
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90 if (no_cleanup)
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91 exit(0); /* XXX - was _exit()!! */
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92 else
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93 exit(0);
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94 _endthread();
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95 }
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96
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97 void PyThread_exit_thread(void)
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98 {
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99 do_PyThread_exit_thread(0);
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100 }
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101
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102 void PyThread__exit_thread(void)
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103 {
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104 do_PyThread_exit_thread(1);
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105 }
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106
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107 #ifndef NO_EXIT_PROG
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108 static void do_PyThread_exit_prog(int status, int no_cleanup)
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109 {
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110 dprintf(("PyThread_exit_prog(%d) called\n", status));
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111 if (!initialized)
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112 if (no_cleanup)
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113 _exit(status);
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114 else
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115 exit(status);
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116 }
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117
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118 void PyThread_exit_prog(int status)
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119 {
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120 do_PyThread_exit_prog(status, 0);
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121 }
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122
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123 void PyThread__exit_prog _P1(int status)
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124 {
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125 do_PyThread_exit_prog(status, 1);
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126 }
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127 #endif /* NO_EXIT_PROG */
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128
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129 /*
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130 * Lock support. It has to be implemented using Mutexes, as
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131 * CE doesnt support semaphores. Therefore we use some hacks to
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132 * simulate the non reentrant requirements of Python locks
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133 */
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134 PyThread_type_lock PyThread_allocate_lock(void)
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135 {
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136 HANDLE aLock;
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137
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138 dprintf(("PyThread_allocate_lock called\n"));
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139 if (!initialized)
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140 PyThread_init_thread();
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141
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142 aLock = CreateEvent(NULL, /* Security attributes */
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143 0, /* Manual-Reset */
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144 1, /* Is initially signalled */
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145 NULL); /* Name of event */
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146
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147 dprintf(("%ld: PyThread_allocate_lock() -> %p\n", PyThread_get_thread_ident(), aLock));
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148
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149 return (PyThread_type_lock) aLock;
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150 }
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151
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152 void PyThread_free_lock(PyThread_type_lock aLock)
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153 {
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154 dprintf(("%ld: PyThread_free_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
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155
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156 CloseHandle(aLock);
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157 }
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158
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159 /*
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160 * Return 1 on success if the lock was acquired
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161 *
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162 * and 0 if the lock was not acquired. This means a 0 is returned
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163 * if the lock has already been acquired by this thread!
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164 */
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165 int PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag)
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166 {
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167 int success = 1;
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168 DWORD waitResult;
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169
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170 dprintf(("%ld: PyThread_acquire_lock(%p, %d) called\n", PyThread_get_thread_ident(),aLock, waitflag));
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171
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172 #ifndef DEBUG
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173 waitResult = WaitForSingleObject(aLock, (waitflag == 1 ? INFINITE : 0));
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174 #else
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175 /* To aid in debugging, we regularly wake up. This allows us to
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176 break into the debugger */
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177 while (TRUE) {
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178 waitResult = WaitForSingleObject(aLock, waitflag ? 3000 : 0);
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179 if (waitflag==0 || (waitflag==1 && waitResult == WAIT_OBJECT_0))
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180 break;
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181 }
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182 #endif
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183
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184 if (waitResult != WAIT_OBJECT_0) {
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185 success = 0; /* We failed */
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186 }
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187
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188 dprintf(("%ld: PyThread_acquire_lock(%p, %d) -> %d\n", PyThread_get_thread_ident(),aLock, waitflag, success));
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189
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190 return success;
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191 }
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192
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193 void PyThread_release_lock(PyThread_type_lock aLock)
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194 {
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195 dprintf(("%ld: PyThread_release_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
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196
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197 if (!SetEvent(aLock))
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198 dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n", PyThread_get_thread_ident(), aLock, GetLastError()));
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199 }
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200
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201