Mercurial > trustbridge > nss-cmake-static

annotate nspr/pr/src/io/prio.c @ 3:150b72113545

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Add DBM and legacydb support
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:32:02 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2 /* This Source Code Form is subject to the terms of the Mozilla Public
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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5
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6 #include "primpl.h"
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7
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8 #include <string.h> /* for memset() */
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9
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10
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11 /************************************************************************/
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12
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13 PRLock *_pr_flock_lock;
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14 PRCondVar *_pr_flock_cv;
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15
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16 #ifdef WINCE
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17 /*
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18 * There are no stdin, stdout, stderr in Windows CE. INVALID_HANDLE_VALUE
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19 * should cause all I/O functions on the handle to fail.
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20 */
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21 #define STD_INPUT_HANDLE ((DWORD)-10)
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22 #define STD_OUTPUT_HANDLE ((DWORD)-11)
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23 #define STD_ERROR_HANDLE ((DWORD)-12)
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24
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25 static HANDLE GetStdHandle(DWORD nStdHandle)
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26 {
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27 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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28 return INVALID_HANDLE_VALUE;
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29 }
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30 #endif
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31
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32 void _PR_InitIO(void)
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33 {
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34 const PRIOMethods *methods = PR_GetFileMethods();
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35
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36 _PR_InitFdCache();
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37
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38 _pr_flock_lock = PR_NewLock();
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39 _pr_flock_cv = PR_NewCondVar(_pr_flock_lock);
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40
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41 #ifdef WIN32
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42 _pr_stdin = PR_AllocFileDesc((PROsfd)GetStdHandle(STD_INPUT_HANDLE),
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43 methods);
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44 _pr_stdout = PR_AllocFileDesc((PROsfd)GetStdHandle(STD_OUTPUT_HANDLE),
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45 methods);
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46 _pr_stderr = PR_AllocFileDesc((PROsfd)GetStdHandle(STD_ERROR_HANDLE),
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47 methods);
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48 #ifdef WINNT
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49 _pr_stdin->secret->md.sync_file_io = PR_TRUE;
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50 _pr_stdout->secret->md.sync_file_io = PR_TRUE;
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51 _pr_stderr->secret->md.sync_file_io = PR_TRUE;
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52 #endif
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53 #else
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54 _pr_stdin = PR_AllocFileDesc(0, methods);
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55 _pr_stdout = PR_AllocFileDesc(1, methods);
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56 _pr_stderr = PR_AllocFileDesc(2, methods);
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57 #endif
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58 _PR_MD_INIT_FD_INHERITABLE(_pr_stdin, PR_TRUE);
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59 _PR_MD_INIT_FD_INHERITABLE(_pr_stdout, PR_TRUE);
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60 _PR_MD_INIT_FD_INHERITABLE(_pr_stderr, PR_TRUE);
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61 }
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62
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63 void _PR_CleanupIO(void)
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64 {
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65 PR_FreeFileDesc(_pr_stdin);
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66 _pr_stdin = NULL;
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67 PR_FreeFileDesc(_pr_stdout);
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68 _pr_stdout = NULL;
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69 PR_FreeFileDesc(_pr_stderr);
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70 _pr_stderr = NULL;
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71
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72 if (_pr_flock_cv) {
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73 PR_DestroyCondVar(_pr_flock_cv);
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74 _pr_flock_cv = NULL;
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75 }
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76 if (_pr_flock_lock) {
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77 PR_DestroyLock(_pr_flock_lock);
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78 _pr_flock_lock = NULL;
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79 }
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80
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81 _PR_CleanupFdCache();
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82 }
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83
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84 PR_IMPLEMENT(PRFileDesc*) PR_GetSpecialFD(PRSpecialFD osfd)
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85 {
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86 PRFileDesc *result = NULL;
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87 PR_ASSERT((int) osfd >= PR_StandardInput && osfd <= PR_StandardError);
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88
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89 if (!_pr_initialized) _PR_ImplicitInitialization();
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90
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91 switch (osfd)
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92 {
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93 case PR_StandardInput: result = _pr_stdin; break;
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94 case PR_StandardOutput: result = _pr_stdout; break;
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95 case PR_StandardError: result = _pr_stderr; break;
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96 default:
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97 (void)PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
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98 }
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99 return result;
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100 }
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101
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102 PR_IMPLEMENT(PRFileDesc*) PR_AllocFileDesc(
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103 PROsfd osfd, const PRIOMethods *methods)
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104 {
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105 PRFileDesc *fd;
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106
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107 #ifdef XP_UNIX
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108 /*
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109 * Assert that the file descriptor is small enough to fit in the
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110 * fd_set passed to select
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111 */
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112 PR_ASSERT(osfd < FD_SETSIZE);
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113 #endif
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114 fd = _PR_Getfd();
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115 if (fd) {
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116 /* Initialize the members of PRFileDesc and PRFilePrivate */
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117 fd->methods = methods;
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118 fd->secret->state = _PR_FILEDESC_OPEN;
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119 fd->secret->md.osfd = osfd;
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120 _PR_MD_INIT_FILEDESC(fd);
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121 } else {
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122 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
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123 }
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124
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125 return fd;
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126 }
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127
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128 PR_IMPLEMENT(void) PR_FreeFileDesc(PRFileDesc *fd)
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129 {
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130 PR_ASSERT(fd);
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131 _PR_Putfd(fd);
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132 }
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133
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134 /*
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135 ** Wait for some i/o to finish on one or more more poll descriptors.
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136 */
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137 PR_IMPLEMENT(PRInt32) PR_Poll(PRPollDesc *pds, PRIntn npds, PRIntervalTime timeout)
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138 {
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139 return(_PR_MD_PR_POLL(pds, npds, timeout));
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140 }
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141
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142 /*
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143 ** Set the inheritance attribute of a file descriptor.
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144 */
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145 PR_IMPLEMENT(PRStatus) PR_SetFDInheritable(
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146 PRFileDesc *fd,
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147 PRBool inheritable)
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148 {
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149 #if defined(XP_UNIX) || defined(WIN32) || defined(XP_OS2) || defined(XP_BEOS)
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150 /*
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151 * Only a non-layered, NSPR file descriptor can be inherited
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152 * by a child process.
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153 */
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154 if (fd->identity != PR_NSPR_IO_LAYER) {
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155 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
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156 return PR_FAILURE;
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157 }
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158 if (fd->secret->inheritable != inheritable) {
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159 if (_PR_MD_SET_FD_INHERITABLE(fd, inheritable) == PR_FAILURE) {
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160 return PR_FAILURE;
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161 }
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162 fd->secret->inheritable = inheritable;
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163 }
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164 return PR_SUCCESS;
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165 #else
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166 PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
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167 return PR_FAILURE;
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168 #endif
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169 }
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170
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171 /*
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172 ** This function only has a useful implementation in the debug build of
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173 ** the pthreads version.
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174 */
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175 PR_IMPLEMENT(void) PT_FPrintStats(PRFileDesc *debug_out, const char *msg)
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176 {
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177 /* do nothing */
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178 } /* PT_FPrintStats */
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