Mercurial > cpython-lru_cache-weakref

annotate Modules/_multiprocessing/win32_functions.c @ 54294:dba767bc3155 legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
remove mention of old ctypes version
author Benjamin Peterson <benjamin@python.org>
date Sat, 23 May 2009 20:59:09 +0000
parents e2818b9f964b
children e38335d4df91 3b58f2441cc8
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1 /*
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2 * Win32 functions used by multiprocessing package
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3 *
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4 * win32_functions.c
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5 *
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6 * Copyright (c) 2006-2008, R Oudkerk --- see COPYING.txt
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7 */
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8
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9 #include "multiprocessing.h"
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10
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11
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12 #define WIN32_FUNCTION(func) \
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13 {#func, (PyCFunction)win32_ ## func, METH_VARARGS | METH_STATIC, ""}
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14
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15 #define WIN32_CONSTANT(fmt, con) \
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16 PyDict_SetItemString(Win32Type.tp_dict, #con, Py_BuildValue(fmt, con))
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17
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18
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19 static PyObject *
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20 win32_CloseHandle(PyObject *self, PyObject *args)
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21 {
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22 HANDLE hObject;
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23 BOOL success;
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24
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25 if (!PyArg_ParseTuple(args, F_HANDLE, &hObject))
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26 return NULL;
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27
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28 Py_BEGIN_ALLOW_THREADS
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29 success = CloseHandle(hObject);
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30 Py_END_ALLOW_THREADS
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31
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32 if (!success)
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33 return PyErr_SetFromWindowsErr(0);
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34
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35 Py_RETURN_NONE;
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36 }
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37
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38 static PyObject *
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39 win32_ConnectNamedPipe(PyObject *self, PyObject *args)
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40 {
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41 HANDLE hNamedPipe;
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42 LPOVERLAPPED lpOverlapped;
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43 BOOL success;
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44
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45 if (!PyArg_ParseTuple(args, F_HANDLE F_POINTER,
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46 &hNamedPipe, &lpOverlapped))
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47 return NULL;
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48
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49 Py_BEGIN_ALLOW_THREADS
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50 success = ConnectNamedPipe(hNamedPipe, lpOverlapped);
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51 Py_END_ALLOW_THREADS
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52
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53 if (!success)
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54 return PyErr_SetFromWindowsErr(0);
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55
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56 Py_RETURN_NONE;
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57 }
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58
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59 static PyObject *
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60 win32_CreateFile(PyObject *self, PyObject *args)
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61 {
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62 LPCTSTR lpFileName;
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63 DWORD dwDesiredAccess;
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64 DWORD dwShareMode;
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65 LPSECURITY_ATTRIBUTES lpSecurityAttributes;
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66 DWORD dwCreationDisposition;
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67 DWORD dwFlagsAndAttributes;
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68 HANDLE hTemplateFile;
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69 HANDLE handle;
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70
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71 if (!PyArg_ParseTuple(args, "s" F_DWORD F_DWORD F_POINTER
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72 F_DWORD F_DWORD F_HANDLE,
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73 &lpFileName, &dwDesiredAccess, &dwShareMode,
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74 &lpSecurityAttributes, &dwCreationDisposition,
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75 &dwFlagsAndAttributes, &hTemplateFile))
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76 return NULL;
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77
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78 Py_BEGIN_ALLOW_THREADS
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79 handle = CreateFile(lpFileName, dwDesiredAccess,
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80 dwShareMode, lpSecurityAttributes,
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81 dwCreationDisposition,
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82 dwFlagsAndAttributes, hTemplateFile);
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83 Py_END_ALLOW_THREADS
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84
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85 if (handle == INVALID_HANDLE_VALUE)
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86 return PyErr_SetFromWindowsErr(0);
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87
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88 return Py_BuildValue(F_HANDLE, handle);
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89 }
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90
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91 static PyObject *
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92 win32_CreateNamedPipe(PyObject *self, PyObject *args)
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93 {
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94 LPCTSTR lpName;
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95 DWORD dwOpenMode;
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96 DWORD dwPipeMode;
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97 DWORD nMaxInstances;
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98 DWORD nOutBufferSize;
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99 DWORD nInBufferSize;
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100 DWORD nDefaultTimeOut;
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101 LPSECURITY_ATTRIBUTES lpSecurityAttributes;
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102 HANDLE handle;
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103
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104 if (!PyArg_ParseTuple(args, "s" F_DWORD F_DWORD F_DWORD
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105 F_DWORD F_DWORD F_DWORD F_POINTER,
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106 &lpName, &dwOpenMode, &dwPipeMode,
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107 &nMaxInstances, &nOutBufferSize,
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108 &nInBufferSize, &nDefaultTimeOut,
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109 &lpSecurityAttributes))
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110 return NULL;
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111
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112 Py_BEGIN_ALLOW_THREADS
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113 handle = CreateNamedPipe(lpName, dwOpenMode, dwPipeMode,
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114 nMaxInstances, nOutBufferSize,
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115 nInBufferSize, nDefaultTimeOut,
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116 lpSecurityAttributes);
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117 Py_END_ALLOW_THREADS
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118
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119 if (handle == INVALID_HANDLE_VALUE)
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120 return PyErr_SetFromWindowsErr(0);
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121
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122 return Py_BuildValue(F_HANDLE, handle);
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123 }
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124
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125 static PyObject *
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126 win32_ExitProcess(PyObject *self, PyObject *args)
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127 {
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128 UINT uExitCode;
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129
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130 if (!PyArg_ParseTuple(args, "I", &uExitCode))
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131 return NULL;
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132
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133 #if defined(Py_DEBUG)
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134 SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOALIGNMENTFAULTEXCEPT|SEM_NOGPFAULTERRORBOX|SEM_NOOPENFILEERRORBOX);
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135 _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG);
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136 #endif
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137
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138
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139 ExitProcess(uExitCode);
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140
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141 return NULL;
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142 }
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143
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144 static PyObject *
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145 win32_GetLastError(PyObject *self, PyObject *args)
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146 {
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147 return Py_BuildValue(F_DWORD, GetLastError());
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148 }
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149
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150 static PyObject *
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151 win32_OpenProcess(PyObject *self, PyObject *args)
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152 {
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153 DWORD dwDesiredAccess;
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154 BOOL bInheritHandle;
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155 DWORD dwProcessId;
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156 HANDLE handle;
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157
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158 if (!PyArg_ParseTuple(args, F_DWORD "i" F_DWORD,
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159 &dwDesiredAccess, &bInheritHandle, &dwProcessId))
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160 return NULL;
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161
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162 handle = OpenProcess(dwDesiredAccess, bInheritHandle, dwProcessId);
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163 if (handle == NULL)
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164 return PyErr_SetFromWindowsErr(0);
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165
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166 return Py_BuildValue(F_HANDLE, handle);
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167 }
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168
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169 static PyObject *
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170 win32_SetNamedPipeHandleState(PyObject *self, PyObject *args)
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171 {
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172 HANDLE hNamedPipe;
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173 PyObject *oArgs[3];
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174 DWORD dwArgs[3], *pArgs[3] = {NULL, NULL, NULL};
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175 int i;
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176
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177 if (!PyArg_ParseTuple(args, F_HANDLE "OOO",
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178 &hNamedPipe, &oArgs[0], &oArgs[1], &oArgs[2]))
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179 return NULL;
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180
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181 PyErr_Clear();
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182
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183 for (i = 0 ; i < 3 ; i++) {
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184 if (oArgs[i] != Py_None) {
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185 dwArgs[i] = PyInt_AsUnsignedLongMask(oArgs[i]);
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186 if (PyErr_Occurred())
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187 return NULL;
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188 pArgs[i] = &dwArgs[i];
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189 }
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190 }
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191
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192 if (!SetNamedPipeHandleState(hNamedPipe, pArgs[0], pArgs[1], pArgs[2]))
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193 return PyErr_SetFromWindowsErr(0);
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194
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195 Py_RETURN_NONE;
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196 }
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197
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198 static PyObject *
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199 win32_WaitNamedPipe(PyObject *self, PyObject *args)
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200 {
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201 LPCTSTR lpNamedPipeName;
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202 DWORD nTimeOut;
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203 BOOL success;
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204
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205 if (!PyArg_ParseTuple(args, "s" F_DWORD, &lpNamedPipeName, &nTimeOut))
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206 return NULL;
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207
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208 Py_BEGIN_ALLOW_THREADS
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209 success = WaitNamedPipe(lpNamedPipeName, nTimeOut);
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210 Py_END_ALLOW_THREADS
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211
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212 if (!success)
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213 return PyErr_SetFromWindowsErr(0);
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214
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215 Py_RETURN_NONE;
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216 }
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217
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218 static PyMethodDef win32_methods[] = {
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219 WIN32_FUNCTION(CloseHandle),
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220 WIN32_FUNCTION(GetLastError),
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221 WIN32_FUNCTION(OpenProcess),
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222 WIN32_FUNCTION(ExitProcess),
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223 WIN32_FUNCTION(ConnectNamedPipe),
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224 WIN32_FUNCTION(CreateFile),
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225 WIN32_FUNCTION(CreateNamedPipe),
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226 WIN32_FUNCTION(SetNamedPipeHandleState),
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227 WIN32_FUNCTION(WaitNamedPipe),
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228 {NULL}
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229 };
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230
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231
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232 PyTypeObject Win32Type = {
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233 PyVarObject_HEAD_INIT(NULL, 0)
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234 };
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235
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236
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237 PyObject *
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238 create_win32_namespace(void)
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239 {
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240 Win32Type.tp_name = "_multiprocessing.win32";
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241 Win32Type.tp_methods = win32_methods;
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242 if (PyType_Ready(&Win32Type) < 0)
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243 return NULL;
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244 Py_INCREF(&Win32Type);
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245
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246 WIN32_CONSTANT(F_DWORD, ERROR_ALREADY_EXISTS);
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247 WIN32_CONSTANT(F_DWORD, ERROR_PIPE_BUSY);
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248 WIN32_CONSTANT(F_DWORD, ERROR_PIPE_CONNECTED);
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249 WIN32_CONSTANT(F_DWORD, ERROR_SEM_TIMEOUT);
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250 WIN32_CONSTANT(F_DWORD, GENERIC_READ);
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251 WIN32_CONSTANT(F_DWORD, GENERIC_WRITE);
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252 WIN32_CONSTANT(F_DWORD, INFINITE);
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253 WIN32_CONSTANT(F_DWORD, NMPWAIT_WAIT_FOREVER);
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254 WIN32_CONSTANT(F_DWORD, OPEN_EXISTING);
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255 WIN32_CONSTANT(F_DWORD, PIPE_ACCESS_DUPLEX);
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256 WIN32_CONSTANT(F_DWORD, PIPE_ACCESS_INBOUND);
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257 WIN32_CONSTANT(F_DWORD, PIPE_READMODE_MESSAGE);
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258 WIN32_CONSTANT(F_DWORD, PIPE_TYPE_MESSAGE);
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259 WIN32_CONSTANT(F_DWORD, PIPE_UNLIMITED_INSTANCES);
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260 WIN32_CONSTANT(F_DWORD, PIPE_WAIT);
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261 WIN32_CONSTANT(F_DWORD, PROCESS_ALL_ACCESS);
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262
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263 WIN32_CONSTANT("i", NULL);
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264
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265 return (PyObject*)&Win32Type;
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266 }