annotate nspr/pr/include/prtrace.h @ 4:b513267f632f tip

Build DBM module
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:58:03 +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 prtrace_h___
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7 #define prtrace_h___
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8 /*
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9 ** prtrace.h -- NSPR's Trace Facility.
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10 **
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11 ** The Trace Facility provides a means to trace application
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12 ** program events within a process. When implementing an
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13 ** application program an engineer may insert a "Trace" function
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14 ** call, passing arguments to be traced. The "Trace" function
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15 ** combines the user trace data with identifying data and
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16 ** writes this data in time ordered sequence into a circular
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17 ** in-memory buffer; when the buffer fills, it wraps.
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18 **
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19 ** Functions are provided to set and/or re-configure the size of
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20 ** the trace buffer, control what events are recorded in the
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21 ** buffer, enable and disable tracing based on specific user
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22 ** supplied data and other control functions. Methods are provided
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23 ** to record the trace entries in the in-memory trace buffer to
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24 ** a file.
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25 **
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26 ** Tracing may cause a performance degredation to the application
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27 ** depending on the number and placement of calls to the tracing
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28 ** facility. When tracing is compiled in and all tracing is
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29 ** disabled via the runtime controls, the overhead should be
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30 ** minimal. ... Famous last words, eh?
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31 **
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32 ** When DEBUG is defined at compile time, the Trace Facility is
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33 ** compiled as part of NSPR and any application using NSPR's
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34 ** header files will have tracing compiled in. When DEBUG is not
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35 ** defined, the Trace Facility is not compiled into NSPR nor
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36 ** exported in its header files. If the Trace Facility is
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37 ** desired in a non-debug build, then FORCE_NSPR_TRACE may be
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38 ** defined at compile time for both the optimized build of NSPR
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39 ** and the application. NSPR and any application using NSPR's
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40 ** Trace Facility must be compiled with the same level of trace
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41 ** conditioning or unresolved references may be realized at link
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42 ** time.
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43 **
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44 ** For any of the Trace Facility methods that requires a trace
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45 ** handle as an input argument, the caller must ensure that the
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46 ** trace handle argument is valid. An invalid trace handle
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47 ** argument may cause unpredictable results.
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48 **
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49 ** Trace Facility methods are thread-safe and SMP safe.
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50 **
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51 ** Users of the Trace Facility should use the defined macros to
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52 ** invoke trace methods, not the function calls directly. e.g.
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53 ** PR_TRACE( h1,0,1,2, ...); not PR_Trace(h1,0,1,2, ...);
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54 **
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55 ** Application designers should be aware of the effects of
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56 ** debug and optimized build differences when using result of the
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57 ** Trace Facility macros in expressions.
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58 **
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59 ** See Also: prcountr.h
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60 **
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61 ** /lth. 08-Jun-1998.
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62 */
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63
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64 #include "prtypes.h"
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65 #include "prthread.h"
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66 #include "prtime.h"
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67
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68 PR_BEGIN_EXTERN_C
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69
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70 /*
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71 ** Opaque type for the trace handle
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72 ** ... Don't even think about looking in here.
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73 **
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74 */
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75 typedef void * PRTraceHandle;
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76
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77 /*
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78 ** PRTraceEntry -- A trace entry in the in-memory trace buffer
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79 ** looks like this.
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80 **
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81 */
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82 typedef struct PRTraceEntry
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83 {
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84 PRThread *thread; /* The thread creating the trace entry */
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85 PRTraceHandle handle; /* PRTraceHandle creating the trace entry */
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86 PRTime time; /* Value of PR_Now() at time of trace entry */
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87 PRUint32 userData[8]; /* user supplied trace data */
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88 } PRTraceEntry;
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89
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90 /*
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91 ** PRTraceOption -- command operands to
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92 ** PR_[Set|Get]TraceOption(). See descriptive meanings there.
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93 **
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94 */
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95 typedef enum PRTraceOption
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96 {
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97 PRTraceBufSize,
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98 PRTraceEnable,
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99 PRTraceDisable,
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100 PRTraceSuspend,
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101 PRTraceResume,
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102 PRTraceSuspendRecording,
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103 PRTraceResumeRecording,
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104 PRTraceLockHandles,
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105 PRTraceUnLockHandles,
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106 PRTraceStopRecording
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107 } PRTraceOption;
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108
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109 /* -----------------------------------------------------------------------
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110 ** FUNCTION: PR_DEFINE_TRACE() -- Define a PRTraceHandle
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111 **
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112 ** DESCRIPTION: PR_DEFINE_TRACE() is used to define a trace
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113 ** handle.
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114 **
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115 */
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116 #define PR_DEFINE_TRACE(name) PRTraceHandle name
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117
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118 /* -----------------------------------------------------------------------
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119 ** FUNCTION: PR_INIT_TRACE_HANDLE() -- Set the value of a PRTraceHandle
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120 **
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121 ** DESCRIPTION:
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122 ** PR_INIT_TRACE_HANDLE() sets the value of a PRTraceHandle
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123 ** to value. e.g. PR_INIT_TRACE_HANDLE( myHandle, NULL );
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124 **
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125 */
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126 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
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127 #define PR_INIT_TRACE_HANDLE(handle,value)\
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128 (handle) = (PRCounterHandle)(value)
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129 #else
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130 #define PR_INIT_TRACE_HANDLE(handle,value)
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131 #endif
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132
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133
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134 /* -----------------------------------------------------------------------
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135 ** FUNCTION: PR_CreateTrace() -- Create a trace handle
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136 **
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137 ** DESCRIPTION:
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138 ** PR_CreateTrace() creates a new trace handle. Tracing is
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139 ** enabled for this handle when it is created. The trace handle
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140 ** is intended for use in other Trace Facility calls.
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141 **
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142 ** PR_CreateTrace() registers the QName, RName and description
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143 ** data so that this data can be retrieved later.
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144 **
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145 ** INPUTS:
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146 ** qName: pointer to string. QName for this trace handle.
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147 **
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148 ** rName: pointer to string. RName for this trace handle.
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149 **
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150 ** description: pointer to string. Descriptive data about this
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151 ** trace handle.
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152 **
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153 ** OUTPUTS:
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154 ** Creates the trace handle.
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155 ** Registers the QName and RName with the trace facility.
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156 **
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157 ** RETURNS:
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158 ** PRTraceHandle
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159 **
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160 ** RESTRICTIONS:
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161 ** qName is limited to 31 characters.
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162 ** rName is limited to 31 characters.
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163 ** description is limited to 255 characters.
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164 **
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165 */
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166 #define PRTRACE_NAME_MAX 31
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167 #define PRTRACE_DESC_MAX 255
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168
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169 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
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170 #define PR_CREATE_TRACE(handle,qName,rName,description)\
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171 (handle) = PR_CreateTrace((qName),(rName),(description))
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172 #else
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173 #define PR_CREATE_TRACE(handle,qName,rName,description)
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174 #endif
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175
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176 NSPR_API(PRTraceHandle)
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177 PR_CreateTrace(
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178 const char *qName, /* QName for this trace handle */
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179 const char *rName, /* RName for this trace handle */
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180 const char *description /* description for this trace handle */
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181 );
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182
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183
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184 /* -----------------------------------------------------------------------
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185 ** FUNCTION: PR_DestroyTrace() -- Destroy a trace handle
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186 **
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187 ** DESCRIPTION:
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188 ** PR_DestroyTrace() removes the referenced trace handle and
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189 ** associated QName, RName and description data from the Trace
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190 ** Facility.
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191 **
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192 ** INPUTS: handle. A PRTraceHandle
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193 **
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194 ** OUTPUTS:
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195 ** The trace handle is unregistered.
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196 ** The QName, RName and description are removed.
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197 **
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198 ** RETURNS: void
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199 **
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200 ** RESTRICTIONS:
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201 **
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202 */
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203 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
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204 #define PR_DESTROY_TRACE(handle)\
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205 PR_DestroyTrace((handle))
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206 #else
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207 #define PR_DESTROY_TRACE(handle)
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208 #endif
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209
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210 NSPR_API(void)
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211 PR_DestroyTrace(
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212 PRTraceHandle handle /* Handle to be destroyed */
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213 );
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214
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215
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216 /* -----------------------------------------------------------------------
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217 ** FUNCTION: PR_Trace() -- Make a trace entry in the in-memory trace
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218 **
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219 ** DESCRIPTION:
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220 ** PR_Trace() makes an entry in the in-memory trace buffer for
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221 ** the referenced trace handle. The next logically available
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222 ** PRTraceEntry is used; when the next trace entry would overflow
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223 ** the trace table, the table wraps.
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224 **
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225 ** PR_Trace() for a specific trace handle may be disabled by
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226 ** calling PR_SetTraceOption() specifying PRTraceDisable for the
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227 ** trace handle to be disabled.
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228 **
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229 ** INPUTS:
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230 ** handle: PRTraceHandle. The trace handle for this trace.
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231 **
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232 ** userData[0..7]: unsigned 32bit integers. user supplied data
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233 ** that is copied into the PRTraceEntry
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234 **
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235 ** OUTPUTS:
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236 ** A PRTraceEntry is (conditionally) formatted in the in-memory
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237 ** trace buffer.
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238 **
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239 ** RETURNS: void.
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240 **
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241 ** RESTRICTIONS:
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242 **
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243 */
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244 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
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245 #define PR_TRACE(handle,ud0,ud1,ud2,ud3,ud4,ud5,ud6,ud7)\
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246 PR_Trace((handle),(ud0),(ud1),(ud2),(ud3),(ud4),(ud5),(ud6),(ud7))
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247 #else
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248 #define PR_TRACE(handle,ud0,ud1,ud2,ud3,ud4,ud5,ud6,ud7)
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249 #endif
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250
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251 NSPR_API(void)
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252 PR_Trace(
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253 PRTraceHandle handle, /* use this trace handle */
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254 PRUint32 userData0, /* User supplied data word 0 */
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255 PRUint32 userData1, /* User supplied data word 1 */
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256 PRUint32 userData2, /* User supplied data word 2 */
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257 PRUint32 userData3, /* User supplied data word 3 */
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258 PRUint32 userData4, /* User supplied data word 4 */
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259 PRUint32 userData5, /* User supplied data word 5 */
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260 PRUint32 userData6, /* User supplied data word 6 */
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261 PRUint32 userData7 /* User supplied data word 7 */
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262 );
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263
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264 /* -----------------------------------------------------------------------
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265 ** FUNCTION: PR_SetTraceOption() -- Control the Trace Facility
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266 **
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267 ** DESCRIPTION:
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268 ** PR_SetTraceOption() controls the Trace Facility. Depending on
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269 ** command and value, attributes of the Trace Facility may be
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270 ** changed.
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271 **
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272 ** INPUTS:
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273 ** command: An enumerated value in the set of PRTraceOption.
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274 ** value: pointer to the data to be set. Type of the data is
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275 ** dependent on command; for each value of command, the type
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276 ** and meaning of dereferenced value is shown.
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277 **
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278 ** PRTraceBufSize: unsigned long: the size of the trace buffer,
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279 ** in bytes.
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280 **
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281 ** PRTraceEnable: PRTraceHandle. The trace handle to be
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282 ** enabled.
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283 **
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284 ** PRTraceDisable: PRTraceHandle. The trace handle to be
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285 ** disabled.
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286 **
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287 ** PRTraceSuspend: void. value must be NULL. All tracing is
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288 ** suspended.
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289 **
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290 ** PRTraceResume: void. value must be NULL. Tracing for all
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291 ** previously enabled, prior to a PRTraceSuspend, is resumed.
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292 **
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293 ** PRTraceStopRecording: void. value must be NULL. If recording
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294 ** (see: ** PR_RecordTraceEntries()) is being done,
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295 ** PRTraceStopRecording causes PR_RecordTraceEntries() to return
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296 ** to its caller. If recording is not being done, this function
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297 ** has no effect.
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298 **
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299 ** PRTraceSuspendRecording: void. Must be NULL. If recording is
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300 ** being done, PRTraceSuspendRecording causes further writes to
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301 ** the trace file to be suspended. Data in the in-memory
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302 ** trace buffer that would ordinarily be written to the
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303 ** trace file will not be written. Trace entries will continue
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304 ** to be entered in the in-memory buffer. If the Trace Facility
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305 ** recording is already in a suspended state, the call has no
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306 ** effect.
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307 **
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308 ** PRTraceResumeRecording: void. value must be NULL. If
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309 ** recording for the Trace Facility has been previously been
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310 ** suspended, this causes recording to resume. Recording resumes
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311 ** with the next in-memory buffer segment that would be written
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312 ** if trace recording had not been suspended. If recording is
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313 ** not currently suspended, the call has no effect.
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314 **
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315 ** PRTraceLockHandles: void. value must be NULL. Locks the
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316 ** trace handle lock. While the trace handle lock is held,
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317 ** calls to PR_CreateTrace() will block until the lock is
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318 ** released.
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319 **
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320 ** PRTraceUnlockHandles: void. value must be NULL. Unlocks the
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321 ** trace handle lock.
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322 **
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323 ** OUTPUTS:
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324 ** The operation of the Trace Facility may be changed.
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325 **
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326 ** RETURNS: void
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327 **
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328 ** RESTRICTIONS:
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329 **
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330 */
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331 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
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332 #define PR_SET_TRACE_OPTION(command,value)\
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333 PR_SetTraceOption((command),(value))
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334 #else
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335 #define PR_SET_TRACE_OPTION(command,value)
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336 #endif
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337
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338 NSPR_API(void)
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339 PR_SetTraceOption(
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340 PRTraceOption command, /* One of the enumerated values */
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341 void *value /* command value or NULL */
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342 );
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343
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344
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345 /* -----------------------------------------------------------------------
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346 ** FUNCTION: PR_GetTraceOption() -- Retrieve settings from the Trace Facility
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347 **
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348 ** DESCRIPTION:
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349 ** PR_GetTraceOption() retrieves the current setting of the
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350 ** Trace Facility control depending on command.
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351 **
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352 **
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353 ** PRTraceBufSize: unsigned long: the size of the trace buffer,
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354 ** in bytes.
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355 **
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356 **
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357 ** INPUTS:
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358 ** command: one of the enumerated values in PRTraceOptions
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359 ** valid for PR_GetTraceOption().
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360 **
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361 ** OUTPUTS:
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362 ** dependent on command.
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363 **
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364 ** RETURNS: void
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365 **
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366 ** RESTRICTIONS:
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367 **
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368 */
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369 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
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370 #define PR_GET_TRACE_OPTION(command,value)\
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371 PR_GetTraceOption((command),(value))
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372 #else
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373 #define PR_GET_TRACE_OPTION(command,value)
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374 #endif
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375
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376 NSPR_API(void)
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377 PR_GetTraceOption(
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378 PRTraceOption command, /* One of the enumerated values */
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379 void *value /* command value or NULL */
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380 );
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381
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382 /* -----------------------------------------------------------------------
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383 ** FUNCTION: PR_GetTraceHandleFromName() -- Retrieve an existing
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384 ** handle by name.
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385 **
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386 ** DESCRIPTION:
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387 ** PR_GetTraceHandleFromName() retreives an existing tracehandle
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388 ** using the name specified by qName and rName.
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389 **
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390 ** INPUTS:
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391 ** qName: pointer to string. QName for this trace handle.
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392 **
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393 ** rName: pointer to string. RName for this trace handle.
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394 **
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395 **
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396 ** OUTPUTS: returned.
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397 **
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398 ** RETURNS:
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399 ** PRTraceHandle associated with qName and rName or NULL when
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400 ** there is no match.
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401 **
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402 ** RESTRICTIONS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
403 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
404 */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
405 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
406 #define PR_GET_TRACE_HANDLE_FROM_NAME(handle,qName,rName)\
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
407 (handle) = PR_GetTraceHandleFromName((qName),(rName))
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
408 #else
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
409 #define PR_GET_TRACE_HANDLE_FROM_NAME(handle,qName,rName)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
410 #endif
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
411
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
412 NSPR_API(PRTraceHandle)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
413 PR_GetTraceHandleFromName(
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
414 const char *qName, /* QName search argument */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
415 const char *rName /* RName search argument */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
416 );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
417
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
418 /* -----------------------------------------------------------------------
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
419 ** FUNCTION: PR_GetTraceNameFromHandle() -- Retreive trace name
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
420 ** by bandle.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
421 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
422 ** DESCRIPTION:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
423 ** PR_GetTraceNameFromHandle() retreives the existing qName,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
424 ** rName, and description for the referenced trace handle.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
425 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
426 ** INPUTS: handle: PRTraceHandle.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
427 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
428 ** OUTPUTS: pointers to the Trace Facility's copy of qName,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
429 ** rName and description. ... Don't mess with these values.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
430 ** They're mine.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
431 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
432 ** RETURNS: void
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
433 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
434 ** RESTRICTIONS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
435 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
436 */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
437 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
438 #define PR_GET_TRACE_NAME_FROM_HANDLE(handle,qName,rName,description)\
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
439 PR_GetTraceNameFromHandle((handle),(qName),(rName),(description))
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
440 #else
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
441 #define PR_GET_TRACE_NAME_FROM_HANDLE(handle,qName,rName,description)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
442 #endif
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
443
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
444 NSPR_API(void)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
445 PR_GetTraceNameFromHandle(
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
446 PRTraceHandle handle, /* handle as search argument */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
447 const char **qName, /* pointer to associated QName */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
448 const char **rName, /* pointer to associated RName */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
449 const char **description /* pointer to associated description */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
450 );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
451
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
452 /* -----------------------------------------------------------------------
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
453 ** FUNCTION: PR_FindNextTraceQname() -- Retrieive a QName handle
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
454 ** iterator.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
455 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
456 ** DESCRIPTION:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
457 ** PR_FindNextTraceQname() retreives the first or next trace
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
458 ** QName handle, depending on the value of handle, from the trace
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
459 ** database. The PRTraceHandle returned can be used as an
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
460 ** iterator to traverse the QName handles in the Trace database.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
461 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
462 ** INPUTS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
463 ** handle: When NULL, PR_FindNextQname() returns the first QName
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
464 ** handle. When a handle is a valid PRTraceHandle previously
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
465 ** retreived using PR_FindNextQname() the next QName handle is
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
466 ** retreived.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
467 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
468 ** OUTPUTS: returned.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
469 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
470 ** RETURNS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
471 ** PRTraceHandle or NULL when there are no trace handles.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
472 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
473 ** RESTRICTIONS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
474 ** Iterating thru the trace handles via FindFirst/FindNext
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
475 ** should be done under protection of the trace handle lock.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
476 ** See: PR_SetTraceOption( PRLockTraceHandles ).
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
477 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
478 */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
479 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
480 #define PR_FIND_NEXT_TRACE_QNAME(next,handle)\
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
481 (next) = PR_FindNextTraceQname((handle))
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
482 #else
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
483 #define PR_FIND_NEXT_TRACE_QNAME(next,handle)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
484 #endif
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
485
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
486 NSPR_API(PRTraceHandle)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
487 PR_FindNextTraceQname(
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
488 PRTraceHandle handle
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
489 );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
490
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
491
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
492 /* -----------------------------------------------------------------------
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
493 ** FUNCTION: PR_FindNextTraceRname() -- Retrieive an RName handle
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
494 ** iterator.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
495 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
496 ** DESCRIPTION:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
497 ** PR_FindNextTraceRname() retreives the first or next trace
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
498 ** RName handle, depending on the value of handle, from the trace
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
499 ** database. The PRTraceHandle returned can be used as an
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
500 ** iterator to traverse the RName handles in the Trace database.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
501 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
502 ** INPUTS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
503 ** rhandle: When NULL, PR_FindNextRname() returns the first
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
504 ** RName handle. When a handle is a valid PRTraceHandle
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
505 ** previously retreived using PR_FindNextRname() the next RName
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
506 ** handle is retreived.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
507 ** qhandle: A valid PRTraceHandle retruned from a previous call
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
508 ** to PR_FIND_NEXT_TRACE_QNAME().
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
509 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
510 ** OUTPUTS: returned.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
511 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
512 ** RETURNS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
513 ** PRTraceHandle or NULL when there are no trace handles.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
514 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
515 ** RESTRICTIONS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
516 ** Iterating thru the trace handles via FindNext should be done
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
517 ** under protection of the trace handle lock. See: (
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
518 ** PR_SetTraceOption( PRLockTraceHandles ).
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
519 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
520 */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
521 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
522 #define PR_FIND_NEXT_TRACE_RNAME(next,rhandle,qhandle)\
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
523 (next) = PR_FindNextTraceRname((rhandle),(qhandle))
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
524 #else
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
525 #define PR_FIND_NEXT_TRACE_RNAME(next,rhandle,qhandle)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
526 #endif
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
527
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
528 NSPR_API(PRTraceHandle)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
529 PR_FindNextTraceRname(
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
530 PRTraceHandle rhandle,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
531 PRTraceHandle qhandle
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
532 );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
533
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
534 /* -----------------------------------------------------------------------
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
535 ** FUNCTION: PR_RecordTraceEntries() -- Write trace entries to external media
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
536 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
537 ** DESCRIPTION:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
538 ** PR_RecordTraceEntries() causes entries in the in-memory trace
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
539 ** buffer to be written to external media.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
540 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
541 ** When PR_RecordTraceEntries() is called from an application
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
542 ** thread, the function appears to block until another thread
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
543 ** calls PR_SetTraceOption() with the PRTraceStopRecording
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
544 ** option. This suggests that PR_RecordTraceEntries() should be
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
545 ** called from a user supplied thread whose only job is to
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
546 ** record trace entries.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
547 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
548 ** The environment variable NSPR_TRACE_LOG controls the operation
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
549 ** of this function. When NSPR_TRACE_LOG is not defined in the
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
550 ** environment, no recording of trace entries occurs. When
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
551 ** NSPR_TRACE_LOG is defined, the value of its definition must be
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
552 ** the filename of the file to receive the trace entry buffer.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
553 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
554 ** PR_RecordTraceEntries() attempts to record the in-memory
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
555 ** buffer to a file, subject to the setting of the environment
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
556 ** variable NSPR_TRACE_LOG. It is possible because of system
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
557 ** load, the thread priority of the recording thread, number of
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
558 ** active trace records being written over time, and other
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
559 ** variables that some trace records can be lost. ... In other
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
560 ** words: don't bet the farm on getting everything.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
561 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
562 ** INPUTS: none
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
563 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
564 ** OUTPUTS: none
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
565 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
566 ** RETURNS: PR_STATUS
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
567 ** PR_SUCCESS no errors were found.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
568 ** PR_FAILURE errors were found.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
569 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
570 ** RESTRICTIONS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
571 ** Only one thread can call PR_RecordTraceEntries() within a
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
572 ** process.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
573 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
574 ** On error, PR_RecordTraceEntries() may return prematurely.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
575 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
576 */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
577 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
578 #define PR_RECORD_TRACE_ENTRIES()\
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
579 PR_RecordTraceEntries()
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
580 #else
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
581 #define PR_RECORD_TRACE_ENTRIES()
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
582 #endif
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
583
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
584 NSPR_API(void)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
585 PR_RecordTraceEntries(
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
586 void
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
587 );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
588
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
589 /* -----------------------------------------------------------------------
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
590 ** FUNCTION: PR_GetTraceEntries() -- Retreive trace entries from
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
591 ** the Trace Facility
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
592 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
593 ** DESCRIPTION:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
594 ** PR_GetTraceEntries() retreives trace entries from the Trace
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
595 ** Facility. Up to count trace entries are copied from the Trace
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
596 ** Facility into buffer. Only those trace entries that have not
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
597 ** been copied via a previous call to PR_GetTraceEntries() are
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
598 ** copied. The actual number copied is placed in the PRInt32
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
599 ** variable pointed to by found.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
600 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
601 ** If more than count trace entries have entered the Trace
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
602 ** Facility since the last call to PR_GetTraceEntries()
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
603 ** a lost data condition is returned. In this case, the most
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
604 ** recent count trace entries are copied into buffer and found is
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
605 ** set to count.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
606 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
607 ** INPUTS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
608 ** count. The number of trace entries to be copied into buffer.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
609 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
610 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
611 ** OUTPUTS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
612 ** buffer. An array of PRTraceEntries. The buffer is supplied
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
613 ** by the caller.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
614 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
615 ** found: 32bit signed integer. The number of PRTraceEntries
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
616 ** actually copied. found is always less than or equal to count.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
617 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
618 ** RETURNS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
619 ** zero when there is no lost data.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
620 ** non-zero when some PRTraceEntries have been lost.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
621 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
622 ** RESTRICTIONS:
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
623 ** This is a real performance pig. The copy out operation is bad
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
624 ** enough, but depending on then frequency of calls to the
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
625 ** function, serious performance impact to the operating
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
626 ** application may be realized. ... YMMV.
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
627 **
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
628 */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
629 #if defined (DEBUG) || defined (FORCE_NSPR_TRACE)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
630 #define PR_GET_TRACE_ENTRIES(buffer,count,found)\
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
631 PR_GetTraceEntries((buffer),(count),(found))
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
632 #else
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
633 #define PR_GET_TRACE_ENTRIES(buffer,count,found)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
634 #endif
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
635
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
636 NSPR_API(PRIntn)
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
637 PR_GetTraceEntries(
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
638 PRTraceEntry *buffer, /* where to write output */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
639 PRInt32 count, /* number to get */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
640 PRInt32 *found /* number you got */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
641 );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
642
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
643 PR_END_EXTERN_C
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
644
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
645 #endif /* prtrace_h___ */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
646
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