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annotate Python/dynload_aix.c @ 58664:993f703a61ba

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Merged revisions 77484,77487,77561,77570,77593,77603,77608,77667,77702-77703,77739,77858,77887,77889 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r77484 | skip.montanaro | 2010-01-13 19:12:34 -0600 (Wed, 13 Jan 2010) | 4 lines Update PyEval_EvalFrame to PyEval_EvalFrameEx. This looks to have been done partially before. Also add a comment describing how this might have to work with different versions of the interpreter. ........ r77487 | ezio.melotti | 2010-01-14 05:34:10 -0600 (Thu, 14 Jan 2010) | 1 line Fixed typo ........ r77561 | georg.brandl | 2010-01-17 02:42:30 -0600 (Sun, 17 Jan 2010) | 1 line #7699: improve datetime docs: straightforward linking to strftime/strptime section, mark classmethods as such. ........ r77570 | georg.brandl | 2010-01-17 06:14:42 -0600 (Sun, 17 Jan 2010) | 1 line Add note about usage of STRINGLIB_EMPTY. ........ r77593 | georg.brandl | 2010-01-17 17:33:53 -0600 (Sun, 17 Jan 2010) | 1 line Fix internal reference. ........ r77603 | benjamin.peterson | 2010-01-18 17:07:56 -0600 (Mon, 18 Jan 2010) | 8 lines data descriptors do not override the class dictionary if __get__ is not defined Adjust documentation and add a test to verify this behavior. See http://mail.python.org/pipermail/python-dev/2010-January/095637.html for discussion. ........ r77608 | gregory.p.smith | 2010-01-19 02:19:03 -0600 (Tue, 19 Jan 2010) | 6 lines Do not compile stubs for the sha2 series hashes in the openssl hashlib module when the openssl version is too old to support them. That leads both compiled code bloat and to unittests attempting to test implementations that don't exist for comparison purposes on such platforms. ........ r77667 | mark.dickinson | 2010-01-21 12:32:27 -0600 (Thu, 21 Jan 2010) | 1 line Add two more test_strtod test values. ........ r77702 | georg.brandl | 2010-01-23 02:43:31 -0600 (Sat, 23 Jan 2010) | 1 line #7762: fix refcount annotation of PyUnicode_Tailmatch(). ........ r77703 | georg.brandl | 2010-01-23 02:47:54 -0600 (Sat, 23 Jan 2010) | 1 line #7725: fix referencing issue. ........ r77739 | benjamin.peterson | 2010-01-24 21:52:52 -0600 (Sun, 24 Jan 2010) | 1 line mention from_float() in error message ........ r77858 | georg.brandl | 2010-01-30 11:57:48 -0600 (Sat, 30 Jan 2010) | 1 line #7802: fix invalid example (heh). ........ r77887 | georg.brandl | 2010-01-31 12:51:49 -0600 (Sun, 31 Jan 2010) | 5 lines Fix-up ftplib documentation: move exception descriptions to toplevel, not inside a class remove attribution in "versionadded" spell and grammar check docstring of FTP_TLS ........ r77889 | michael.foord | 2010-01-31 13:59:26 -0600 (Sun, 31 Jan 2010) | 1 line Minor modification to unittest documentation. ........
author Benjamin Peterson <benjamin@python.org>
date Wed, 03 Feb 2010 02:35:45 +0000
parents 8cb686dd6e64
children fd25030223b0
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1
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2 /* Support for dynamic loading of extension modules */
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3
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4 #include "Python.h"
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5 #include "importdl.h"
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6
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7 #include <ctype.h> /* for isdigit() */
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8 #include <errno.h> /* for global errno */
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9 #include <string.h> /* for strerror() */
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10 #include <stdlib.h> /* for malloc(), free() */
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11 #include <sys/ldr.h>
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14 #ifdef AIX_GENUINE_CPLUSPLUS
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15 #include "/usr/lpp/xlC/include/load.h"
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16 #define aix_load loadAndInit
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17 #else
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18 #define aix_load load
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19 #endif
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21
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29da35543833 ANSIfy as many declarations as possible.
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22 extern char *Py_GetProgramName(void);
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24 typedef struct Module {
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25 struct Module *next;
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26 void *entry;
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27 } Module, *ModulePtr;
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28
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29 const struct filedescr _PyImport_DynLoadFiletab[] = {
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30 {".so", "rb", C_EXTENSION},
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31 {"module.so", "rb", C_EXTENSION},
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32 {0, 0}
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33 };
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34
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35 static int
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36 aix_getoldmodules(void **modlistptr)
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37 {
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38 register ModulePtr modptr, prevmodptr;
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39 register struct ld_info *ldiptr;
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40 register char *ldibuf;
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41 register int errflag, bufsize = 1024;
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42 register unsigned int offset;
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43 char *progname = Py_GetProgramName();
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44
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45 /*
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46 -- Get the list of loaded modules into ld_info structures.
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47 */
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48 if ((ldibuf = malloc(bufsize)) == NULL) {
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49 PyErr_SetString(PyExc_ImportError, strerror(errno));
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50 return -1;
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51 }
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52 while ((errflag = loadquery(L_GETINFO, ldibuf, bufsize)) == -1
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53 && errno == ENOMEM) {
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54 free(ldibuf);
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55 bufsize += 1024;
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56 if ((ldibuf = malloc(bufsize)) == NULL) {
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57 PyErr_SetString(PyExc_ImportError, strerror(errno));
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58 return -1;
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59 }
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60 }
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61 if (errflag == -1) {
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62 PyErr_SetString(PyExc_ImportError, strerror(errno));
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63 return -1;
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64 }
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65 /*
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66 -- Make the modules list from the ld_info structures.
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67 */
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68 ldiptr = (struct ld_info *)ldibuf;
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69 prevmodptr = NULL;
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70 do {
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71 if (strstr(progname, ldiptr->ldinfo_filename) == NULL &&
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72 strstr(ldiptr->ldinfo_filename, "python") == NULL) {
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73 /*
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74 -- Extract only the modules belonging to the main
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75 -- executable + those containing "python" as a
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76 -- substring (like the "python[version]" binary or
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77 -- "libpython[version].a" in case it's a shared lib).
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78 */
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79 offset = (unsigned int)ldiptr->ldinfo_next;
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80 ldiptr = (struct ld_info *)((char*)ldiptr + offset);
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81 continue;
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82 }
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83 if ((modptr = (ModulePtr)malloc(sizeof(Module))) == NULL) {
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84 PyErr_SetString(PyExc_ImportError, strerror(errno));
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85 while (*modlistptr) {
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86 modptr = (ModulePtr)*modlistptr;
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87 *modlistptr = (void *)modptr->next;
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88 free(modptr);
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89 }
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90 return -1;
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91 }
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92 modptr->entry = ldiptr->ldinfo_dataorg;
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93 modptr->next = NULL;
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94 if (prevmodptr == NULL)
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95 *modlistptr = (void *)modptr;
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96 else
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97 prevmodptr->next = modptr;
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98 prevmodptr = modptr;
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99 offset = (unsigned int)ldiptr->ldinfo_next;
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100 ldiptr = (struct ld_info *)((char*)ldiptr + offset);
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101 } while (offset);
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102 free(ldibuf);
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103 return 0;
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104 }
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105
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106
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107 static void
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108 aix_loaderror(const char *pathname)
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109 {
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110
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111 char *message[1024], errbuf[1024];
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112 register int i,j;
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113
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114 struct errtab {
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115 int errNo;
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116 char *errstr;
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117 } load_errtab[] = {
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118 {L_ERROR_TOOMANY, "too many errors, rest skipped."},
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119 {L_ERROR_NOLIB, "can't load library:"},
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120 {L_ERROR_UNDEF, "can't find symbol in library:"},
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121 {L_ERROR_RLDBAD,
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122 "RLD index out of range or bad relocation type:"},
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123 {L_ERROR_FORMAT, "not a valid, executable xcoff file:"},
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124 {L_ERROR_MEMBER,
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125 "file not an archive or does not contain requested member:"},
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126 {L_ERROR_TYPE, "symbol table mismatch:"},
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127 {L_ERROR_ALIGN, "text alignment in file is wrong."},
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128 {L_ERROR_SYSTEM, "System error:"},
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129 {L_ERROR_ERRNO, NULL}
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130 };
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131
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132 #define LOAD_ERRTAB_LEN (sizeof(load_errtab)/sizeof(load_errtab[0]))
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133 #define ERRBUF_APPEND(s) strncat(errbuf, s, sizeof(errbuf)-strlen(errbuf)-1)
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134
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d95a4ec685e0 aix_loaderror(): Conversion of sprintf() to PyOS_snprintf() for buffer
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135 PyOS_snprintf(errbuf, sizeof(errbuf), "from module %.200s ", pathname);
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136
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137 if (!loadquery(L_GETMESSAGES, &message[0], sizeof(message))) {
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138 ERRBUF_APPEND(strerror(errno));
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139 ERRBUF_APPEND("\n");
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140 }
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141 for(i = 0; message[i] && *message[i]; i++) {
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142 int nerr = atoi(message[i]);
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143 for (j=0; j<LOAD_ERRTAB_LEN ; j++) {
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144 if (nerr == load_errtab[j].errNo && load_errtab[j].errstr)
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145 ERRBUF_APPEND(load_errtab[j].errstr);
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146 }
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8cb686dd6e64 Fix SF bug #1072182, problems with signed characters.
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147 while (isdigit(Py_CHARMASK(*message[i]))) message[i]++ ;
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148 ERRBUF_APPEND(message[i]);
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149 ERRBUF_APPEND("\n");
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150 }
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151 errbuf[strlen(errbuf)-1] = '\0'; /* trim off last newline */
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152 PyErr_SetString(PyExc_ImportError, errbuf);
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153 return;
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154 }
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155
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156
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528559a0b2f2 Cleanup patches from Greg Stein:
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157 dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
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158 const char *pathname, FILE *fp)
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159 {
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160 dl_funcptr p;
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161
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162 /*
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163 -- Invoke load() with L_NOAUTODEFER leaving the imported symbols
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164 -- of the shared module unresolved. Thus we have to resolve them
13620
5b727ab37092 Spelling fixes supplied by Rob W. W. Hooft. All these are fixes in either
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165 -- explicitly with loadbind. The new module is loaded, then we
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166 -- resolve its symbols using the list of already loaded modules
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167 -- (only those that belong to the python executable). Get these
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168 -- with loadquery(L_GETINFO).
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169 */
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170
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171 static void *staticmodlistptr = NULL;
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172
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173 if (!staticmodlistptr)
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174 if (aix_getoldmodules(&staticmodlistptr) == -1)
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175 return NULL;
11612
675284497443 Vladimir Marangozov:
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176 p = (dl_funcptr) aix_load((char *)pathname, L_NOAUTODEFER, 0);
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177 if (p == NULL) {
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178 aix_loaderror(pathname);
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179 return NULL;
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180 }
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181
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182 return p;
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183 }