Mercurial > cpython-lru_cache-weakref

annotate Python/dynload_win.c @ 13163:a09e8635534d legacy-trunk

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Don't try to guess the name of a .def file -- if one is supplied, use it, otherwise just generate an '/export:' option.
author Greg Ward <gward@python.net>
date Thu, 29 Jun 2000 23:09:20 +0000
parents 8c8de5b736dc
children 916fb024ce94
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 /* Support for dynamic loading of extension modules */
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33
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34 #include <windows.h>
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35 #include <direct.h>
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36
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37 #include "Python.h"
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38 #include "importdl.h"
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39
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40 const struct filedescr _PyImport_DynLoadFiletab[] = {
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41 #ifdef _DEBUG
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42 {"_d.pyd", "rb", C_EXTENSION},
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43 {"_d.dll", "rb", C_EXTENSION},
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44 #else
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45 {".pyd", "rb", C_EXTENSION},
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46 {".dll", "rb", C_EXTENSION},
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47 #endif
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48 {0, 0}
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49 };
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50
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51
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52 dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
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53 const char *pathname, FILE *fp)
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54 {
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55 dl_funcptr p;
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56 char funcname[258];
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57
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58 sprintf(funcname, "init%.200s", shortname);
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59
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60 #ifdef MS_WIN32
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61 {
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62 HINSTANCE hDLL;
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63 char pathbuf[260];
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64 if (strchr(pathname, '\\') == NULL &&
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65 strchr(pathname, '/') == NULL)
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66 {
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67 /* Prefix bare filename with ".\" */
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68 char *p = pathbuf;
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69 *p = '\0';
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70 _getcwd(pathbuf, sizeof pathbuf);
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71 if (*p != '\0' && p[1] == ':')
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72 p += 2;
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73 sprintf(p, ".\\%-.255s", pathname);
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74 pathname = pathbuf;
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75 }
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76 /* Look for dependent DLLs in directory of pathname first */
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77 /* XXX This call doesn't exist in Windows CE */
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78 hDLL = LoadLibraryEx(pathname, NULL,
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79 LOAD_WITH_ALTERED_SEARCH_PATH);
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80 if (hDLL==NULL){
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81 char errBuf[256];
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82 unsigned int errorCode;
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83
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84 /* Get an error string from Win32 error code */
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85 char theInfo[256]; /* Pointer to error text
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86 from system */
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87 int theLength; /* Length of error text */
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88
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89 errorCode = GetLastError();
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90
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91 theLength = FormatMessage(
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92 FORMAT_MESSAGE_FROM_SYSTEM, /* flags */
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93 NULL, /* message source */
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94 errorCode, /* the message (error) ID */
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95 0, /* default language environment */
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96 (LPTSTR) theInfo, /* the buffer */
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97 sizeof(theInfo), /* the buffer size */
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98 NULL); /* no additional format args. */
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99
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100 /* Problem: could not get the error message.
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101 This should not happen if called correctly. */
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102 if (theLength == 0) {
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103 sprintf(errBuf,
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104 "DLL load failed with error code %d",
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105 errorCode);
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106 } else {
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107 size_t len;
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108 /* For some reason a \r\n
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109 is appended to the text */
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110 if (theLength >= 2 &&
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111 theInfo[theLength-2] == '\r' &&
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112 theInfo[theLength-1] == '\n') {
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113 theLength -= 2;
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114 theInfo[theLength] = '\0';
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115 }
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116 strcpy(errBuf, "DLL load failed: ");
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117 len = strlen(errBuf);
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118 strncpy(errBuf+len, theInfo,
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119 sizeof(errBuf)-len);
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120 errBuf[sizeof(errBuf)-1] = '\0';
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121 }
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122 PyErr_SetString(PyExc_ImportError, errBuf);
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123 return NULL;
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124 }
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125 p = GetProcAddress(hDLL, funcname);
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126 }
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127 #endif /* MS_WIN32 */
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128 #ifdef MS_WIN16
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129 {
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130 HINSTANCE hDLL;
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131 char pathbuf[16];
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132 if (strchr(pathname, '\\') == NULL &&
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133 strchr(pathname, '/') == NULL)
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134 {
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135 /* Prefix bare filename with ".\" */
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136 sprintf(pathbuf, ".\\%-.13s", pathname);
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137 pathname = pathbuf;
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138 }
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139 hDLL = LoadLibrary(pathname);
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140 if (hDLL < HINSTANCE_ERROR){
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141 char errBuf[256];
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142 sprintf(errBuf,
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143 "DLL load failed with error code %d", hDLL);
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144 PyErr_SetString(PyExc_ImportError, errBuf);
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145 return NULL;
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146 }
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147 p = GetProcAddress(hDLL, funcname);
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148 }
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149 #endif /* MS_WIN16 */
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150
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151 return p;
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152 }