1 /**************************************************************************
3 * Copyright 2007-2009 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 **************************************************************************/
36 #include "trace_writer.hpp"
37 #include "trace_format.hpp"
56 if (g_gzFile != NULL) {
63 Writer::open(const char *filename) {
66 g_gzFile = gzopen(filename, "wb");
77 _writeUInt(TRACE_VERSION);
83 Writer::_write(const void *sBuffer, size_t dwBytesToWrite) {
87 gzwrite(g_gzFile, sBuffer, dwBytesToWrite);
91 Writer::_writeByte(char c) {
96 Writer::_writeUInt(unsigned long long value) {
97 char buf[2 * sizeof value];
102 assert(len < sizeof buf);
103 buf[len] = 0x80 | (value & 0x7f);
109 buf[len - 1] &= 0x7f;
115 Writer::_writeFloat(float value) {
116 assert(sizeof value == 4);
117 _write((const char *)&value, sizeof value);
121 Writer::_writeDouble(double value) {
122 assert(sizeof value == 8);
123 _write((const char *)&value, sizeof value);
127 Writer::_writeString(const char *str) {
128 size_t len = strlen(str);
133 inline bool lookup(std::vector<bool> &map, size_t index) {
134 if (index >= map.size()) {
135 map.resize(index + 1);
142 unsigned Writer::beginEnter(const FunctionSig *sig) {
143 _writeByte(Trace::EVENT_ENTER);
145 if (!lookup(functions, sig->id)) {
146 _writeString(sig->name);
147 _writeUInt(sig->num_args);
148 for (unsigned i = 0; i < sig->num_args; ++i) {
149 _writeString(sig->arg_names[i]);
151 functions[sig->id] = true;
157 void Writer::endEnter(void) {
158 _writeByte(Trace::CALL_END);
161 void Writer::beginLeave(unsigned call) {
162 _writeByte(Trace::EVENT_LEAVE);
166 void Writer::endLeave(void) {
167 _writeByte(Trace::CALL_END);
170 void Writer::beginArg(unsigned index) {
171 _writeByte(Trace::CALL_ARG);
175 void Writer::beginReturn(void) {
176 _writeByte(Trace::CALL_RET);
179 void Writer::beginArray(size_t length) {
180 _writeByte(Trace::TYPE_ARRAY);
184 void Writer::beginStruct(const StructSig *sig) {
185 _writeByte(Trace::TYPE_STRUCT);
187 if (!lookup(structs, sig->id)) {
188 _writeString(sig->name);
189 _writeUInt(sig->num_members);
190 for (unsigned i = 0; i < sig->num_members; ++i) {
191 _writeString(sig->member_names[i]);
193 structs[sig->id] = true;
197 void Writer::writeBool(bool value) {
198 _writeByte(value ? Trace::TYPE_TRUE : Trace::TYPE_FALSE);
201 void Writer::writeSInt(signed long long value) {
203 _writeByte(Trace::TYPE_SINT);
206 _writeByte(Trace::TYPE_UINT);
211 void Writer::writeUInt(unsigned long long value) {
212 _writeByte(Trace::TYPE_UINT);
216 void Writer::writeFloat(float value) {
217 _writeByte(Trace::TYPE_FLOAT);
221 void Writer::writeDouble(double value) {
222 _writeByte(Trace::TYPE_DOUBLE);
226 void Writer::writeString(const char *str) {
231 _writeByte(Trace::TYPE_STRING);
235 void Writer::writeString(const char *str, size_t len) {
240 _writeByte(Trace::TYPE_STRING);
245 void Writer::writeWString(const wchar_t *str) {
250 _writeByte(Trace::TYPE_STRING);
251 _writeString("<wide-string>");
254 void Writer::writeBlob(const void *data, size_t size) {
259 _writeByte(Trace::TYPE_BLOB);
266 void Writer::writeEnum(const EnumSig *sig) {
267 _writeByte(Trace::TYPE_ENUM);
269 if (!lookup(enums, sig->id)) {
270 _writeString(sig->name);
271 Writer::writeSInt(sig->value);
272 enums[sig->id] = true;
276 void Writer::writeBitmask(const BitmaskSig *sig, unsigned long long value) {
277 _writeByte(Trace::TYPE_BITMASK);
279 if (!lookup(bitmasks, sig->id)) {
280 _writeUInt(sig->num_flags);
281 for (unsigned i = 0; i < sig->num_flags; ++i) {
282 if (i != 0 && sig->flags[i].value == 0) {
283 OS::DebugMessage("apitrace: warning: sig %s is zero but is not first flag\n", sig->flags[i].name);
285 _writeString(sig->flags[i].name);
286 _writeUInt(sig->flags[i].value);
288 bitmasks[sig->id] = true;
293 void Writer::writeNull(void) {
294 _writeByte(Trace::TYPE_NULL);
297 void Writer::writeOpaque(const void *addr) {
302 _writeByte(Trace::TYPE_OPAQUE);
303 _writeUInt((size_t)addr);
308 LocalWriter::open(void) {
310 static unsigned dwCounter = 0;
312 const char *szExtension = "trace";
313 char szFileName[PATH_MAX];
314 const char *lpFileName;
316 lpFileName = getenv("TRACE_FILE");
318 strncpy(szFileName, lpFileName, PATH_MAX);
321 char szProcessName[PATH_MAX];
322 char szCurrentDir[PATH_MAX];
323 OS::GetProcessName(szProcessName, PATH_MAX);
324 OS::GetCurrentDir(szCurrentDir, PATH_MAX);
330 snprintf(szFileName, PATH_MAX, "%s%c%s.%u.%s", szCurrentDir, PATH_SEP, szProcessName, dwCounter, szExtension);
332 snprintf(szFileName, PATH_MAX, "%s%c%s.%s", szCurrentDir, PATH_SEP, szProcessName, szExtension);
334 file = fopen(szFileName, "rb");
344 OS::DebugMessage("apitrace: tracing to %s\n", szFileName);
346 Writer::open(szFileName);
349 unsigned LocalWriter::beginEnter(const FunctionSig *sig) {
356 return Writer::beginEnter(sig);
359 void LocalWriter::endEnter(void) {
361 gzflush(g_gzFile, Z_SYNC_FLUSH);
365 void LocalWriter::beginLeave(unsigned call) {
367 Writer::beginLeave(call);
370 void LocalWriter::endLeave(void) {
372 gzflush(g_gzFile, Z_SYNC_FLUSH);
377 } /* namespace Trace */