Mercurial > trustbridge > nss-cmake-static

annotate nspr/pr/include/private/pprio.h @ 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 /*
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7 ** File: pprio.h
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8 **
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9 ** Description: Private definitions for I/O related structures
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10 */
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11
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12 #ifndef pprio_h___
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13 #define pprio_h___
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14
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15 #include "prtypes.h"
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16 #include "prio.h"
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17
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18 PR_BEGIN_EXTERN_C
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19
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20 /************************************************************************/
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21 /************************************************************************/
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22
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23 #ifdef _WIN64
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24 typedef __int64 PROsfd;
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25 #else
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26 typedef PRInt32 PROsfd;
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27 #endif
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28
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29 /* Return the method tables for files, tcp sockets and udp sockets */
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30 NSPR_API(const PRIOMethods*) PR_GetFileMethods(void);
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31 NSPR_API(const PRIOMethods*) PR_GetTCPMethods(void);
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32 NSPR_API(const PRIOMethods*) PR_GetUDPMethods(void);
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33 NSPR_API(const PRIOMethods*) PR_GetPipeMethods(void);
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34
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35 /*
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36 ** Convert a NSPR socket handle to a native socket handle.
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37 **
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38 ** Using this function makes your code depend on the properties of the
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39 ** current NSPR implementation, which may change (although extremely
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40 ** unlikely because of NSPR's backward compatibility requirement). Avoid
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41 ** using it if you can.
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42 **
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43 ** If you use this function, you need to understand what NSPR does to
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44 ** the native handle. For example, NSPR puts native socket handles in
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45 ** non-blocking mode or associates them with an I/O completion port (the
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46 ** WINNT build configuration only). Your use of the native handle should
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47 ** not interfere with NSPR's use of the native handle. If your code
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48 ** changes the configuration of the native handle, (e.g., changes it to
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49 ** blocking or closes it), NSPR will not work correctly.
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50 */
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51 NSPR_API(PROsfd) PR_FileDesc2NativeHandle(PRFileDesc *);
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52 NSPR_API(void) PR_ChangeFileDescNativeHandle(PRFileDesc *, PROsfd);
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53 NSPR_API(PRFileDesc*) PR_AllocFileDesc(PROsfd osfd,
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54 const PRIOMethods *methods);
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55 NSPR_API(void) PR_FreeFileDesc(PRFileDesc *fd);
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56 /*
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57 ** Import an existing OS file to NSPR.
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58 */
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59 NSPR_API(PRFileDesc*) PR_ImportFile(PROsfd osfd);
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60 NSPR_API(PRFileDesc*) PR_ImportPipe(PROsfd osfd);
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61 NSPR_API(PRFileDesc*) PR_ImportTCPSocket(PROsfd osfd);
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62 NSPR_API(PRFileDesc*) PR_ImportUDPSocket(PROsfd osfd);
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63
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64
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65 /*
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66 *************************************************************************
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67 * FUNCTION: PR_CreateSocketPollFd
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68 * DESCRIPTION:
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69 * Create a PRFileDesc wrapper for a native socket handle, for use with
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70 * PR_Poll only
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71 * INPUTS:
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72 * None
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73 * OUTPUTS:
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74 * None
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75 * RETURN: PRFileDesc*
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76 * Upon successful completion, PR_CreateSocketPollFd returns a pointer
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77 * to the PRFileDesc created for the native socket handle
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78 * Returns a NULL pointer if the create of a new PRFileDesc failed
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79 *
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80 **************************************************************************
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81 */
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82
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83 NSPR_API(PRFileDesc*) PR_CreateSocketPollFd(PROsfd osfd);
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84
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85 /*
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86 *************************************************************************
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87 * FUNCTION: PR_DestroySocketPollFd
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88 * DESCRIPTION:
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89 * Destroy the PRFileDesc wrapper created by PR_CreateSocketPollFd
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90 * INPUTS:
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91 * None
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92 * OUTPUTS:
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93 * None
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94 * RETURN: PRFileDesc*
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95 * Upon successful completion, PR_DestroySocketPollFd returns
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96 * PR_SUCCESS, else PR_FAILURE
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97 *
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98 **************************************************************************
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99 */
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100
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101 NSPR_API(PRStatus) PR_DestroySocketPollFd(PRFileDesc *fd);
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102
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103
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104 /*
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105 ** Macros for PR_Socket
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106 **
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107 ** Socket types: PR_SOCK_STREAM, PR_SOCK_DGRAM
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108 */
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109
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110 #ifdef WIN32
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111
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112 #define PR_SOCK_STREAM 1
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113 #define PR_SOCK_DGRAM 2
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114
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115 #else /* WIN32 */
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116
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117 #define PR_SOCK_STREAM SOCK_STREAM
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118 #define PR_SOCK_DGRAM SOCK_DGRAM
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119
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120 #endif /* WIN32 */
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121
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122 /*
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123 ** Create a new Socket; this function is obsolete.
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124 */
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125 NSPR_API(PRFileDesc*) PR_Socket(PRInt32 domain, PRInt32 type, PRInt32 proto);
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126
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127 /* FUNCTION: PR_LockFile
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128 ** DESCRIPTION:
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129 ** Lock a file for exclusive access.
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130 ** RETURNS:
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131 ** PR_SUCCESS when the lock is held
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132 ** PR_FAILURE otherwise
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133 */
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134 NSPR_API(PRStatus) PR_LockFile(PRFileDesc *fd);
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135
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136 /* FUNCTION: PR_TLockFile
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137 ** DESCRIPTION:
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138 ** Test and Lock a file for exclusive access. Do not block if the
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139 ** file cannot be locked immediately.
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140 ** RETURNS:
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141 ** PR_SUCCESS when the lock is held
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142 ** PR_FAILURE otherwise
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143 */
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144 NSPR_API(PRStatus) PR_TLockFile(PRFileDesc *fd);
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145
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146 /* FUNCTION: PR_UnlockFile
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147 ** DESCRIPTION:
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148 ** Unlock a file which has been previously locked successfully by this
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149 ** process.
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150 ** RETURNS:
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151 ** PR_SUCCESS when the lock is released
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152 ** PR_FAILURE otherwise
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153 */
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154 NSPR_API(PRStatus) PR_UnlockFile(PRFileDesc *fd);
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155
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156 /*
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157 ** Emulate acceptread by accept and recv.
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158 */
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159 NSPR_API(PRInt32) PR_EmulateAcceptRead(PRFileDesc *sd, PRFileDesc **nd,
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160 PRNetAddr **raddr, void *buf, PRInt32 amount, PRIntervalTime timeout);
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161
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162 /*
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163 ** Emulate sendfile by reading from the file and writing to the socket.
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164 ** The file is memory-mapped if memory-mapped files are supported.
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165 */
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166 NSPR_API(PRInt32) PR_EmulateSendFile(
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167 PRFileDesc *networkSocket, PRSendFileData *sendData,
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168 PRTransmitFileFlags flags, PRIntervalTime timeout);
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169
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170 #ifdef WIN32
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171 /* FUNCTION: PR_NTFast_AcceptRead
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172 ** DESCRIPTION:
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173 ** NT has the notion of an "accept context", which is only needed in
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174 ** order to make certain calls. By default, a socket connected via
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175 ** AcceptEx can only do a limited number of things without updating
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176 ** the acceptcontext. The generic version of PR_AcceptRead always
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177 ** updates the accept context. This version does not.
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178 **/
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179 NSPR_API(PRInt32) PR_NTFast_AcceptRead(PRFileDesc *sd, PRFileDesc **nd,
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180 PRNetAddr **raddr, void *buf, PRInt32 amount, PRIntervalTime t);
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181
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182 typedef void (*_PR_AcceptTimeoutCallback)(void *);
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183
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184 /* FUNCTION: PR_NTFast_AcceptRead_WithTimeoutCallback
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185 ** DESCRIPTION:
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186 ** The AcceptEx call combines the accept with the read function. However,
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187 ** our daemon threads need to be able to wakeup and reliably flush their
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188 ** log buffers if the Accept times out. However, with the current blocking
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189 ** interface to AcceptRead, there is no way for us to timeout the Accept;
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190 ** this is because when we timeout the Read, we can close the newly
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191 ** socket and continue; but when we timeout the accept itself, there is no
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192 ** new socket to timeout. So instead, this version of the function is
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193 ** provided. After the initial timeout period elapses on the accept()
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194 ** portion of the function, it will call the callback routine and then
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195 ** continue the accept. If the timeout occurs on the read, it will
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196 ** close the connection and return error.
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197 */
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198 NSPR_API(PRInt32) PR_NTFast_AcceptRead_WithTimeoutCallback(
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199 PRFileDesc *sd,
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200 PRFileDesc **nd,
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201 PRNetAddr **raddr,
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202 void *buf,
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203 PRInt32 amount,
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204 PRIntervalTime t,
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205 _PR_AcceptTimeoutCallback callback,
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206 void *callback_arg);
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207
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208 /* FUNCTION: PR_NTFast_Accept
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209 ** DESCRIPTION:
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210 ** NT has the notion of an "accept context", which is only needed in
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211 ** order to make certain calls. By default, a socket connected via
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212 ** AcceptEx can only do a limited number of things without updating
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213 ** the acceptcontext. The generic version of PR_Accept always
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214 ** updates the accept context. This version does not.
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215 **/
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216 NSPR_API(PRFileDesc*) PR_NTFast_Accept(PRFileDesc *fd, PRNetAddr *addr,
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217 PRIntervalTime timeout);
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218
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219 /* FUNCTION: PR_NTFast_Update
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220 ** DESCRIPTION:
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221 ** For sockets accepted with PR_NTFast_Accept or PR_NTFastAcceptRead,
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222 ** this function will update the accept context for those sockets,
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223 ** so that the socket can make general purpose socket calls.
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224 ** Without calling this, the only operations supported on the socket
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225 ** Are PR_Read, PR_Write, PR_Transmitfile, and PR_Close.
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226 */
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227 NSPR_API(void) PR_NTFast_UpdateAcceptContext(PRFileDesc *acceptSock,
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228 PRFileDesc *listenSock);
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229
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230
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231 /* FUNCTION: PR_NT_CancelIo
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232 ** DESCRIPTION:
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233 ** Cancel IO operations on fd.
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234 */
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235 NSPR_API(PRStatus) PR_NT_CancelIo(PRFileDesc *fd);
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236
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237
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238 #endif /* WIN32 */
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239
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240 PR_END_EXTERN_C
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241
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242 #endif /* pprio_h___ */
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