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 "os_string.hpp"
35 #include "trace_file.hpp"
36 #include "trace_writer.hpp"
37 #include "trace_format.hpp"
43 static const char *memcpy_args[3] = {"dest", "src", "n"};
44 const FunctionSig memcpy_sig = {0, "memcpy", 3, memcpy_args};
46 static const char *malloc_args[1] = {"size"};
47 const FunctionSig malloc_sig = {1, "malloc", 1, malloc_args};
49 static const char *free_args[1] = {"ptr"};
50 const FunctionSig free_sig = {2, "free", 1, free_args};
52 static const char *realloc_args[2] = {"ptr", "size"};
53 const FunctionSig realloc_sig = {3, "realloc", 2, realloc_args};
56 static void exceptionCallback(void)
62 LocalWriter::LocalWriter() :
65 // Install the signal handlers as early as possible, to prevent
66 // interfering with the application's signal handling.
67 os::setExceptionCallback(exceptionCallback);
70 LocalWriter::~LocalWriter()
72 os::resetExceptionCallback();
76 LocalWriter::open(void) {
77 os::String szFileName;
79 const char *lpFileName;
81 lpFileName = getenv("TRACE_FILE");
83 static unsigned dwCounter = 0;
85 os::String process = os::getProcessName();
87 process.trimExtension();
89 process.trimDirectory();
91 os::String prefix = os::getCurrentDir();
98 szFileName = os::String::format("%s.%u.trace", prefix.str(), dwCounter);
100 szFileName = os::String::format("%s.trace", prefix.str());
102 lpFileName = szFileName;
103 file = fopen(lpFileName, "rb");
113 os::log("apitrace: tracing to %s\n", lpFileName);
115 if (!Writer::open(lpFileName)) {
116 os::log("apitrace: error: failed to open %s\n", lpFileName);
121 // For debugging the exception handler
126 unsigned LocalWriter::beginEnter(const FunctionSig *sig) {
130 if (!m_file->isOpened()) {
134 return Writer::beginEnter(sig);
137 void LocalWriter::endEnter(void) {
143 void LocalWriter::beginLeave(unsigned call) {
146 Writer::beginLeave(call);
149 void LocalWriter::endLeave(void) {
155 void LocalWriter::flush(void) {
157 * Do nothing if the mutex is already acquired (e.g., if a segfault happen
158 * while writing the file) to prevent dead-lock.
163 if (m_file->isOpened()) {
164 os::log("apitrace: flushing trace due to an exception\n");
172 LocalWriter localWriter;
175 } /* namespace trace */