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 os::Path szProcessName = os::getProcessName();
89 os::Path szCurrentDir = os::getCurrentDir();
95 snprintf(szFileName, PATH_MAX, "%s%c%s.%u.%s", szCurrentDir.str(), PATH_SEP, szProcessName.str(), dwCounter, szExtension);
97 snprintf(szFileName, PATH_MAX, "%s%c%s.%s", szCurrentDir.str(), PATH_SEP, szProcessName.str(), szExtension);
99 file = fopen(szFileName, "rb");
109 os::log("apitrace: tracing to %s\n", szFileName);
111 Writer::open(szFileName);
114 // For debugging the exception handler
119 unsigned LocalWriter::beginEnter(const FunctionSig *sig) {
123 if (!m_file->isOpened()) {
127 return Writer::beginEnter(sig);
130 void LocalWriter::endEnter(void) {
136 void LocalWriter::beginLeave(unsigned call) {
139 Writer::beginLeave(call);
142 void LocalWriter::endLeave(void) {
148 void LocalWriter::flush(void) {
150 * Do nothing if the mutex is already acquired (e.g., if a segfault happen
151 * while writing the file) to prevent dead-lock.
156 if (m_file->isOpened()) {
157 os::log("apitrace: flushing trace due to an exception\n");
165 LocalWriter localWriter;
168 } /* namespace trace */