annotate nspr/pr/include/prinit.h @ 3:150b72113545

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 #ifndef prinit_h___
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7 #define prinit_h___
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8
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9 #include "prthread.h"
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10 #include "prtypes.h"
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11 #include "prwin16.h"
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12 #include <stdio.h>
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13
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14 PR_BEGIN_EXTERN_C
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15
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16 /************************************************************************/
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17 /**************************IDENTITY AND VERSIONING***********************/
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18 /************************************************************************/
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19
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20 /*
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21 ** NSPR's name, this should persist until at least the turn of the
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22 ** century.
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23 */
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24 #define PR_NAME "NSPR"
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25
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26 /*
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27 ** NSPR's version is used to determine the likelihood that the version you
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28 ** used to build your component is anywhere close to being compatible with
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29 ** what is in the underlying library.
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30 **
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31 ** The format of the version string is
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32 ** "<major version>.<minor version>[.<patch level>] [<Beta>]"
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33 */
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34 #define PR_VERSION "4.10.4"
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35 #define PR_VMAJOR 4
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36 #define PR_VMINOR 10
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37 #define PR_VPATCH 4
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38 #define PR_BETA PR_FALSE
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39
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40 /*
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41 ** PRVersionCheck
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42 **
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43 ** The basic signature of the function that is called to provide version
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44 ** checking. The result will be a boolean that indicates the likelihood
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45 ** that the underling library will perform as the caller expects.
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46 **
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47 ** The only argument is a string, which should be the verson identifier
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48 ** of the library in question. That string will be compared against an
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49 ** equivalent string that represents the actual build version of the
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50 ** exporting library.
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51 **
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52 ** The result will be the logical union of the directly called library
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53 ** and all dependent libraries.
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54 */
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55
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56 typedef PRBool (*PRVersionCheck)(const char*);
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57
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58 /*
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59 ** PR_VersionCheck
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60 **
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61 ** NSPR's existance proof of the version check function.
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62 **
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63 ** Note that NSPR has no cooperating dependencies.
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64 */
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65
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66 NSPR_API(PRBool) PR_VersionCheck(const char *importedVersion);
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67
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68 /*
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69 * Returns a const string of the NSPR library version.
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70 */
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71 NSPR_API(const char*) PR_GetVersion(void);
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72
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73
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74 /************************************************************************/
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75 /*******************************INITIALIZATION***************************/
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76 /************************************************************************/
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77
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78 /*
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79 ** Initialize the runtime. Attach a thread object to the currently
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80 ** executing native thread of type "type".
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81 **
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82 ** The specificaiton of 'maxPTDs' is ignored.
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83 */
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84 NSPR_API(void) PR_Init(
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85 PRThreadType type, PRThreadPriority priority, PRUintn maxPTDs);
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86
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87 /*
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88 ** And alternate form of initialization, one that may become the default if
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89 ** not the only mechanism, provides a method to get the NSPR runtime init-
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90 ** ialized and place NSPR between the caller and the runtime library. This
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91 ** allows main() to be treated as any other thread root function, signalling
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92 ** its compeletion by returning and allowing the runtime to coordinate the
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93 ** completion of the other threads of the runtime.
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94 **
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95 ** The priority of the main (or primordial) thread will be PR_PRIORITY_NORMAL.
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96 ** The thread may adjust its own priority by using PR_SetPriority(), though
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97 ** at this time the support for priorities is somewhat weak.
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98 **
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99 ** The specificaiton of 'maxPTDs' is ignored.
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100 **
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101 ** The value returned by PR_Initialize is the value returned from the root
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102 ** function, 'prmain'.
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103 */
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104
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105 typedef PRIntn (PR_CALLBACK *PRPrimordialFn)(PRIntn argc, char **argv);
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106
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107 NSPR_API(PRIntn) PR_Initialize(
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108 PRPrimordialFn prmain, PRIntn argc, char **argv, PRUintn maxPTDs);
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109
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110 /*
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111 ** Return PR_TRUE if PR_Init has already been called.
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112 */
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113 NSPR_API(PRBool) PR_Initialized(void);
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114
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115 /*
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116 * Perform a graceful shutdown of NSPR. PR_Cleanup() may be called by
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117 * the primordial thread near the end of the main() function.
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118 *
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119 * PR_Cleanup() attempts to synchronize the natural termination of
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120 * process. It does that by blocking the caller, if and only if it is
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121 * the primordial thread, until the number of user threads has dropped
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122 * to zero. When the primordial thread returns from main(), the process
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123 * will immediately and silently exit. That is, it will (if necessary)
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124 * forcibly terminate any existing threads and exit without significant
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125 * blocking and there will be no error messages or core files.
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126 *
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127 * PR_Cleanup() returns PR_SUCCESS if NSPR is successfully shutdown,
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128 * or PR_FAILURE if the calling thread of this function is not the
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129 * primordial thread.
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130 */
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131 NSPR_API(PRStatus) PR_Cleanup(void);
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132
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133 /*
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134 ** Disable Interrupts
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135 ** Disables timer signals used for pre-emptive scheduling.
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136 */
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137 NSPR_API(void) PR_DisableClockInterrupts(void);
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138
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139 /*
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140 ** Enables Interrupts
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141 ** Enables timer signals used for pre-emptive scheduling.
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142 */
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143 NSPR_API(void) PR_EnableClockInterrupts(void);
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144
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145 /*
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146 ** Block Interrupts
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147 ** Blocks the timer signal used for pre-emptive scheduling
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148 */
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149 NSPR_API(void) PR_BlockClockInterrupts(void);
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150
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151 /*
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152 ** Unblock Interrupts
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153 ** Unblocks the timer signal used for pre-emptive scheduling
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154 */
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155 NSPR_API(void) PR_UnblockClockInterrupts(void);
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156
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157 /*
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158 ** Create extra virtual processor threads. Generally used with MP systems.
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159 */
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160 NSPR_API(void) PR_SetConcurrency(PRUintn numCPUs);
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161
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162 /*
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163 ** Control the method and size of the file descriptor (PRFileDesc*)
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164 ** cache used by the runtime. Setting 'high' to zero is for performance,
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165 ** any other value probably for debugging (see memo on FD caching).
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166 */
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167 NSPR_API(PRStatus) PR_SetFDCacheSize(PRIntn low, PRIntn high);
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168
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169 /*
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170 * Cause an immediate, nongraceful, forced termination of the process.
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171 * It takes a PRIntn argument, which is the exit status code of the
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172 * process.
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173 */
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174 NSPR_API(void) PR_ProcessExit(PRIntn status);
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175
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176 /*
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177 ** Abort the process in a non-graceful manner. This will cause a core file,
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178 ** call to the debugger or other moral equivalent as well as causing the
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179 ** entire process to stop.
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180 */
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181 NSPR_API(void) PR_Abort(void);
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182
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183 /*
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184 ****************************************************************
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185 *
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186 * Module initialization:
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187 *
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188 ****************************************************************
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189 */
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190
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191 typedef struct PRCallOnceType {
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192 PRIntn initialized;
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193 PRInt32 inProgress;
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194 PRStatus status;
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195 } PRCallOnceType;
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196
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197 typedef PRStatus (PR_CALLBACK *PRCallOnceFN)(void);
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198
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199 typedef PRStatus (PR_CALLBACK *PRCallOnceWithArgFN)(void *arg);
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200
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201 NSPR_API(PRStatus) PR_CallOnce(
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202 PRCallOnceType *once,
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203 PRCallOnceFN func
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204 );
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205
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206 NSPR_API(PRStatus) PR_CallOnceWithArg(
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207 PRCallOnceType *once,
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208 PRCallOnceWithArgFN func,
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209 void *arg
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210 );
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211
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212
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213 PR_END_EXTERN_C
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214
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215 #endif /* prinit_h___ */
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