1 /**************************************************************************
3 * Copyright 2007-2011 VMware, Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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24 **************************************************************************/
36 #include "trace_writer.hpp"
37 #include "trace_format.hpp"
43 static void exceptionCallback(void)
45 OS::DebugMessage("apitrace: flushing trace due to an exception\n");
50 LocalWriter::LocalWriter() :
54 LocalWriter::~LocalWriter()
56 OS::ResetExceptionCallback();
60 LocalWriter::open(void) {
62 static unsigned dwCounter = 0;
64 const char *szExtension = "trace";
65 char szFileName[PATH_MAX];
66 const char *lpFileName;
68 lpFileName = getenv("TRACE_FILE");
70 strncpy(szFileName, lpFileName, PATH_MAX);
73 char szProcessName[PATH_MAX];
74 char szCurrentDir[PATH_MAX];
75 OS::GetProcessName(szProcessName, PATH_MAX);
76 OS::GetCurrentDir(szCurrentDir, PATH_MAX);
82 snprintf(szFileName, PATH_MAX, "%s%c%s.%u.%s", szCurrentDir, PATH_SEP, szProcessName, dwCounter, szExtension);
84 snprintf(szFileName, PATH_MAX, "%s%c%s.%s", szCurrentDir, PATH_SEP, szProcessName, szExtension);
86 file = fopen(szFileName, "rb");
96 OS::DebugMessage("apitrace: tracing to %s\n", szFileName);
98 Writer::open(szFileName);
100 OS::SetExceptionCallback(exceptionCallback);
103 // For debugging the exception handler
108 unsigned LocalWriter::beginEnter(const FunctionSig *sig) {
116 return Writer::beginEnter(sig);
119 void LocalWriter::endEnter(void) {
125 void LocalWriter::beginLeave(unsigned call) {
128 Writer::beginLeave(call);
131 void LocalWriter::endLeave(void) {
137 void LocalWriter::flush(void) {
139 * Do nothing if the mutex is already acquired (e.g., if a segfault happen
140 * while writing the file) to prevent dead-lock.
146 gzflush(g_gzFile, Z_SYNC_FLUSH);
153 LocalWriter localWriter;
156 } /* namespace Trace */