1 /**************************************************************************
3 * Copyright 2011 Jose Fonseca
4 * Copyright 2010 VMware, Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 **************************************************************************/
33 #include "trace_parser.hpp"
36 #define TRACE_VERBOSE 0
54 bool Parser::open(const char *filename) {
55 file = gzopen(filename, "rb");
60 version = read_uint();
61 if (version > TRACE_VERSION) {
62 std::cerr << "error: unsupported trace format version " << version << "\n";
69 template <typename Iter>
71 deleteAll(Iter begin, Iter end)
73 while (begin != end) {
79 template <typename Container>
81 deleteAll(const Container &c)
83 deleteAll(c.begin(), c.end());
86 void Parser::close(void) {
100 Call *Parser::parse_call(void) {
104 case Trace::EVENT_ENTER:
107 case Trace::EVENT_LEAVE:
108 return parse_leave();
109 case Trace::EVENT_MESSAGE:
110 std::cerr << "message: " << read_string() << "\n";
113 std::cerr << "error: unknown event " << c << "\n";
116 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
117 std::cerr << "warning: incomplete call " << (*it)->name() << "\n";
118 std::cerr << **it << "\n";
127 * Helper function to lookup an ID in a vector, resizing the vector if it doesn't fit.
130 T *lookup(std::vector<T *> &map, size_t index) {
131 if (index >= map.size()) {
132 map.resize(index + 1);
140 void Parser::parse_enter(void) {
141 size_t id = read_uint();
143 Call::Signature *sig = lookup(functions, id);
145 sig = new Call::Signature;
146 sig->name = read_string();
147 unsigned size = read_uint();
148 for (unsigned i = 0; i < size; ++i) {
149 sig->arg_names.push_back(read_string());
155 Call *call = new Call(sig);
156 call->no = next_call_no++;
158 if (parse_call_details(call)) {
159 calls.push_back(call);
166 Call *Parser::parse_leave(void) {
167 unsigned call_no = read_uint();
169 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
170 if ((*it)->no == call_no) {
180 if (parse_call_details(call)) {
189 bool Parser::parse_call_details(Call *call) {
193 case Trace::CALL_END:
195 case Trace::CALL_ARG:
198 case Trace::CALL_RET:
199 call->ret = parse_value();
202 std::cerr << "error: unknown call detail " << c << "\n";
211 void Parser::parse_arg(Call *call) {
212 unsigned index = read_uint();
213 Value *value = parse_value();
214 if (index >= call->args.size()) {
215 call->args.resize(index + 1);
217 call->args[index] = value;
221 Value *Parser::parse_value(void) {
225 case Trace::TYPE_NULL:
227 case Trace::TYPE_FALSE:
228 return new Bool(false);
229 case Trace::TYPE_TRUE:
230 return new Bool(true);
231 case Trace::TYPE_SINT:
233 case Trace::TYPE_UINT:
235 case Trace::TYPE_FLOAT:
236 return parse_float();
237 case Trace::TYPE_DOUBLE:
238 return parse_double();
239 case Trace::TYPE_STRING:
240 return parse_string();
241 case Trace::TYPE_ENUM:
243 case Trace::TYPE_BITMASK:
244 return parse_bitmask();
245 case Trace::TYPE_ARRAY:
246 return parse_array();
247 case Trace::TYPE_STRUCT:
248 return parse_struct();
249 case Trace::TYPE_BLOB:
251 case Trace::TYPE_OPAQUE:
252 return parse_opaque();
254 std::cerr << "error: unknown type " << c << "\n";
262 Value *Parser::parse_sint() {
263 return new SInt(-(signed long long)read_uint());
267 Value *Parser::parse_uint() {
268 return new UInt(read_uint());
272 Value *Parser::parse_float() {
274 gzread(file, &value, sizeof value);
275 return new Float(value);
279 Value *Parser::parse_double() {
281 gzread(file, &value, sizeof value);
282 return new Float(value);
286 Value *Parser::parse_string() {
287 return new String(read_string());
291 Value *Parser::parse_enum() {
292 size_t id = read_uint();
293 Enum::Signature *sig = lookup(enums, id);
295 std::string name = read_string();
296 Value *value = parse_value();
297 sig = new Enum::Signature(name, value);
301 return new Enum(sig);
305 Value *Parser::parse_bitmask() {
306 size_t id = read_uint();
307 Bitmask::Signature *sig = lookup(bitmasks, id);
309 size_t size = read_uint();
310 sig = new Bitmask::Signature(size);
311 for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
312 it->first = read_string();
313 it->second = read_uint();
314 if (it->second == 0 && it != sig->begin()) {
315 std::cerr << "warning: bitmask " << it->first << " is zero but is not first flag\n";
322 unsigned long long value = read_uint();
324 return new Bitmask(sig, value);
328 Value *Parser::parse_array(void) {
329 size_t len = read_uint();
330 Array *array = new Array(len);
331 for (size_t i = 0; i < len; ++i) {
332 array->values[i] = parse_value();
338 Value *Parser::parse_blob(void) {
339 size_t size = read_uint();
340 Blob *blob = new Blob(size);
342 gzread(file, blob->buf, (unsigned)size);
348 Value *Parser::parse_struct() {
349 size_t id = read_uint();
351 Struct::Signature *sig = lookup(structs, id);
353 sig = new Struct::Signature;
354 sig->name = read_string();
355 unsigned size = read_uint();
356 for (unsigned i = 0; i < size; ++i) {
357 sig->member_names.push_back(read_string());
363 Struct *value = new Struct(sig);
365 for (size_t i = 0; i < sig->member_names.size(); ++i) {
366 value->members[i] = parse_value();
373 Value *Parser::parse_opaque() {
374 unsigned long long addr;
376 return new Pointer(addr);
380 std::string Parser::read_string(void) {
381 size_t len = read_uint();
383 return std::string();
385 char * buf = new char[len];
386 gzread(file, buf, (unsigned)len);
387 std::string value(buf, len);
390 std::cerr << "\tSTRING \"" << value << "\"\n";
396 unsigned long long Parser::read_uint(void) {
397 unsigned long long value = 0;
405 value |= (unsigned long long)(c & 0x7f) << shift;
409 std::cerr << "\tUINT " << value << "\n";
415 inline int Parser::read_byte(void) {
416 int c = gzgetc(file);
419 std::cerr << "\tEOF" << "\n";
421 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
427 } /* namespace Trace */