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,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 **************************************************************************/
34 #include "trace_file.hpp"
35 #include "trace_writer.hpp"
36 #include "trace_format.hpp"
42 static const char *memcpy_args[3] = {"dest", "src", "n"};
43 const FunctionSig memcpy_sig = {0, "memcpy", 3, memcpy_args};
45 static const char *malloc_args[1] = {"size"};
46 const FunctionSig malloc_sig = {1, "malloc", 1, malloc_args};
48 static const char *free_args[1] = {"ptr"};
49 const FunctionSig free_sig = {2, "free", 1, free_args};
51 static const char *realloc_args[2] = {"ptr", "size"};
52 const FunctionSig realloc_sig = {3, "realloc", 2, realloc_args};
55 static void exceptionCallback(void)
61 LocalWriter::LocalWriter() :
64 // Install the signal handlers as early as possible, to prevent
65 // interfering with the application's signal handling.
66 OS::SetExceptionCallback(exceptionCallback);
69 LocalWriter::~LocalWriter()
71 OS::ResetExceptionCallback();
75 LocalWriter::open(void) {
77 static unsigned dwCounter = 0;
79 const char *szExtension = "trace";
80 char szFileName[PATH_MAX];
81 const char *lpFileName;
83 lpFileName = getenv("TRACE_FILE");
85 strncpy(szFileName, lpFileName, PATH_MAX);
88 char szProcessName[PATH_MAX];
89 char szCurrentDir[PATH_MAX];
90 OS::GetProcessName(szProcessName, PATH_MAX);
91 OS::GetCurrentDir(szCurrentDir, PATH_MAX);
97 snprintf(szFileName, PATH_MAX, "%s%c%s.%u.%s", szCurrentDir, PATH_SEP, szProcessName, dwCounter, szExtension);
99 snprintf(szFileName, PATH_MAX, "%s%c%s.%s", szCurrentDir, PATH_SEP, szProcessName, szExtension);
101 file = fopen(szFileName, "rb");
111 OS::DebugMessage("apitrace: tracing to %s\n", szFileName);
113 Writer::open(szFileName);
116 // For debugging the exception handler
121 unsigned LocalWriter::beginEnter(const FunctionSig *sig) {
125 if (!m_file->isOpened()) {
129 return Writer::beginEnter(sig);
132 void LocalWriter::endEnter(void) {
138 void LocalWriter::beginLeave(unsigned call) {
141 Writer::beginLeave(call);
144 void LocalWriter::endLeave(void) {
150 void LocalWriter::flush(void) {
152 * Do nothing if the mutex is already acquired (e.g., if a segfault happen
153 * while writing the file) to prevent dead-lock.
158 if (m_file->isOpened()) {
159 OS::DebugMessage("apitrace: flushing trace due to an exception\n");
167 LocalWriter localWriter;
170 } /* namespace Trace */