Mercurial > trustbridge > nss-cmake-static

annotate nss/lib/base/nssbase.h @ 2:a945361df361

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Fix NSS_LIBRARIES variable
author Andre Heinecke <andre.heinecke@intevation.de>
date Wed, 30 Jul 2014 16:20:44 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* This Source Code Form is subject to the terms of the Mozilla Public
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2 * License, v. 2.0. If a copy of the MPL was not distributed with this
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3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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4
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5 #ifndef NSSBASE_H
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6 #define NSSBASE_H
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7
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8 /*
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9 * nssbase.h
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10 *
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11 * This header file contains the prototypes of the basic public
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12 * NSS routines.
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13 */
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14
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15 #ifndef NSSBASET_H
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16 #include "nssbaset.h"
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17 #endif /* NSSBASET_H */
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18
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19 PR_BEGIN_EXTERN_C
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20
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21 /*
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22 * NSSArena
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23 *
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24 * The public methods relating to this type are:
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25 *
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26 * NSSArena_Create -- constructor
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27 * NSSArena_Destroy
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28 * NSS_ZAlloc
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29 * NSS_ZRealloc
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30 * NSS_ZFreeIf
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31 */
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32
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33 /*
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34 * NSSArena_Create
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35 *
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36 * This routine creates a new memory arena. This routine may return
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37 * NULL upon error, in which case it will have created an error stack.
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38 *
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39 * The top-level error may be one of the following values:
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40 * NSS_ERROR_NO_MEMORY
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41 *
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42 * Return value:
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43 * NULL upon error
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44 * A pointer to an NSSArena upon success
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45 */
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46
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47 NSS_EXTERN NSSArena *
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48 NSSArena_Create
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49 (
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50 void
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51 );
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52
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53 extern const NSSError NSS_ERROR_NO_MEMORY;
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54
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55 /*
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56 * NSSArena_Destroy
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57 *
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58 * This routine will destroy the specified arena, freeing all memory
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59 * allocated from it. This routine returns a PRStatus value; if
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60 * successful, it will return PR_SUCCESS. If unsuccessful, it will
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61 * create an error stack and return PR_FAILURE.
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62 *
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63 * The top-level error may be one of the following values:
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64 * NSS_ERROR_INVALID_ARENA
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65 *
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66 * Return value:
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67 * PR_SUCCESS upon success
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68 * PR_FAILURE upon failure
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69 */
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70
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71 NSS_EXTERN PRStatus
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72 NSSArena_Destroy
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73 (
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74 NSSArena *arena
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75 );
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76
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77 extern const NSSError NSS_ERROR_INVALID_ARENA;
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78
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79 /*
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80 * The error stack
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81 *
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82 * The public methods relating to the error stack are:
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83 *
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84 * NSS_GetError
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85 * NSS_GetErrorStack
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86 */
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87
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88 /*
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89 * NSS_GetError
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90 *
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91 * This routine returns the highest-level (most general) error set
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92 * by the most recent NSS library routine called by the same thread
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93 * calling this routine.
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94 *
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95 * This routine cannot fail. It may return NSS_ERROR_NO_ERROR, which
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96 * indicates that the previous NSS library call did not set an error.
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97 *
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98 * Return value:
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99 * 0 if no error has been set
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100 * A nonzero error number
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101 */
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102
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103 NSS_EXTERN NSSError
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104 NSS_GetError
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105 (
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106 void
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107 );
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108
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109 extern const NSSError NSS_ERROR_NO_ERROR;
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110
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111 /*
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112 * NSS_GetErrorStack
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113 *
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114 * This routine returns a pointer to an array of NSSError values,
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115 * containingthe entire sequence or "stack" of errors set by the most
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116 * recent NSS library routine called by the same thread calling this
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117 * routine. NOTE: the caller DOES NOT OWN the memory pointed to by
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118 * the return value. The pointer will remain valid until the calling
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119 * thread calls another NSS routine. The lowest-level (most specific)
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120 * error is first in the array, and the highest-level is last. The
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121 * array is zero-terminated. This routine may return NULL upon error;
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122 * this indicates a low-memory situation.
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123 *
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124 * Return value:
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125 * NULL upon error, which is an implied NSS_ERROR_NO_MEMORY
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126 * A NON-caller-owned pointer to an array of NSSError values
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127 */
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128
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129 NSS_EXTERN NSSError *
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130 NSS_GetErrorStack
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131 (
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132 void
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133 );
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134
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135 /*
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136 * NSS_ZNEW
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137 *
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138 * This preprocessor macro will allocate memory for a new object
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139 * of the specified type with nss_ZAlloc, and will cast the
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140 * return value appropriately. If the optional arena argument is
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141 * non-null, the memory will be obtained from that arena; otherwise,
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142 * the memory will be obtained from the heap. This routine may
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143 * return NULL upon error, in which case it will have set an error
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144 * upon the error stack.
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145 *
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146 * The error may be one of the following values:
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147 * NSS_ERROR_INVALID_ARENA
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148 * NSS_ERROR_NO_MEMORY
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149 *
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150 * Return value:
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151 * NULL upon error
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152 * A pointer to the new segment of zeroed memory
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153 */
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154
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155 /* The following line exceeds 72 characters, but emacs barfs if we split it. */
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156 #define NSS_ZNEW(arenaOpt, type) ((type *)NSS_ZAlloc((arenaOpt), sizeof(type)))
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157
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158 /*
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159 * NSS_ZNEWARRAY
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160 *
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161 * This preprocessor macro will allocate memory for an array of
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162 * new objects, and will cast the return value appropriately.
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163 * If the optional arena argument is non-null, the memory will
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164 * be obtained from that arena; otherwise, the memory will be
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165 * obtained from the heap. This routine may return NULL upon
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166 * error, in which case it will have set an error upon the error
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167 * stack. The array size may be specified as zero.
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168 *
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169 * The error may be one of the following values:
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170 * NSS_ERROR_INVALID_ARENA
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171 * NSS_ERROR_NO_MEMORY
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172 *
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173 * Return value:
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174 * NULL upon error
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175 * A pointer to the new segment of zeroed memory
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176 */
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177
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178 /* The following line exceeds 72 characters, but emacs barfs if we split it. */
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179 #define NSS_ZNEWARRAY(arenaOpt, type, quantity) ((type *)NSS_ZAlloc((arenaOpt), sizeof(type) * (quantity)))
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180
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181
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182 /*
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183 * NSS_ZAlloc
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184 *
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185 * This routine allocates and zeroes a section of memory of the
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186 * size, and returns to the caller a pointer to that memory. If
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187 * the optional arena argument is non-null, the memory will be
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188 * obtained from that arena; otherwise, the memory will be obtained
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189 * from the heap. This routine may return NULL upon error, in
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190 * which case it will have set an error upon the error stack. The
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191 * value specified for size may be zero; in which case a valid
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192 * zero-length block of memory will be allocated. This block may
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193 * be expanded by calling NSS_ZRealloc.
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194 *
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195 * The error may be one of the following values:
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196 * NSS_ERROR_INVALID_ARENA
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197 * NSS_ERROR_NO_MEMORY
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198 * NSS_ERROR_ARENA_MARKED_BY_ANOTHER_THREAD
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199 *
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200 * Return value:
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201 * NULL upon error
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202 * A pointer to the new segment of zeroed memory
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203 */
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204
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205 NSS_EXTERN void *
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206 NSS_ZAlloc
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207 (
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208 NSSArena *arenaOpt,
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209 PRUint32 size
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210 );
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211
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212 /*
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213 * NSS_ZRealloc
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214 *
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215 * This routine reallocates a block of memory obtained by calling
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216 * nss_ZAlloc or nss_ZRealloc. The portion of memory
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217 * between the new and old sizes -- which is either being newly
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218 * obtained or released -- is in either case zeroed. This routine
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219 * may return NULL upon failure, in which case it will have placed
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220 * an error on the error stack.
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221 *
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222 * The error may be one of the following values:
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223 * NSS_ERROR_INVALID_POINTER
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224 * NSS_ERROR_NO_MEMORY
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225 * NSS_ERROR_ARENA_MARKED_BY_ANOTHER_THREAD
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226 *
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227 * Return value:
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228 * NULL upon error
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229 * A pointer to the replacement segment of memory
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230 */
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231
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232 NSS_EXTERN void *
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233 NSS_ZRealloc
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234 (
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235 void *pointer,
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236 PRUint32 newSize
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237 );
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238
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239
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240 /*
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241 * NSS_ZFreeIf
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242 *
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243 * If the specified pointer is non-null, then the region of memory
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244 * to which it points -- which must have been allocated with
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245 * nss_ZAlloc -- will be zeroed and released. This routine
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246 * returns a PRStatus value; if successful, it will return PR_SUCCESS.
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247 * If unsuccessful, it will set an error on the error stack and return
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248 * PR_FAILURE.
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249 *
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250 * The error may be one of the following values:
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251 * NSS_ERROR_INVALID_POINTER
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diff changeset
252 *
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253 * Return value:
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254 * PR_SUCCESS
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diff changeset
255 * PR_FAILURE
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256 */
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257
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258 NSS_EXTERN PRStatus
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259 NSS_ZFreeIf
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diff changeset
260 (
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261 void *pointer
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262 );
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263
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264 PR_END_EXTERN_C
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265
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266 #endif /* NSSBASE_H */
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