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 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";
123 * Helper function to lookup an ID in a vector, resizing the vector if it doesn't fit.
126 T *lookup(std::vector<T *> &map, size_t index) {
127 if (index >= map.size()) {
128 map.resize(index + 1);
136 void Parser::parse_enter(void) {
137 size_t id = read_uint();
139 Call::Signature *sig = lookup(functions, id);
141 sig = new Call::Signature;
142 sig->name = read_string();
143 unsigned size = read_uint();
144 for (unsigned i = 0; i < size; ++i) {
145 sig->arg_names.push_back(read_string());
151 Call *call = new Call(sig);
152 call->no = next_call_no++;
154 if (parse_call_details(call)) {
155 calls.push_back(call);
162 Call *Parser::parse_leave(void) {
163 unsigned call_no = read_uint();
165 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
166 if ((*it)->no == call_no) {
176 if (parse_call_details(call)) {
185 bool Parser::parse_call_details(Call *call) {
189 case Trace::CALL_END:
191 case Trace::CALL_ARG:
194 case Trace::CALL_RET:
195 call->ret = parse_value();
198 std::cerr << "error: unknown call detail " << c << "\n";
207 void Parser::parse_arg(Call *call) {
208 unsigned index = read_uint();
209 Value *value = parse_value();
210 if (index >= call->args.size()) {
211 call->args.resize(index + 1);
213 call->args[index] = value;
217 Value *Parser::parse_value(void) {
221 case Trace::TYPE_NULL:
223 case Trace::TYPE_FALSE:
224 return new Bool(false);
225 case Trace::TYPE_TRUE:
226 return new Bool(true);
227 case Trace::TYPE_SINT:
229 case Trace::TYPE_UINT:
231 case Trace::TYPE_FLOAT:
232 return parse_float();
233 case Trace::TYPE_DOUBLE:
234 return parse_double();
235 case Trace::TYPE_STRING:
236 return parse_string();
237 case Trace::TYPE_ENUM:
239 case Trace::TYPE_BITMASK:
240 return parse_bitmask();
241 case Trace::TYPE_ARRAY:
242 return parse_array();
243 case Trace::TYPE_STRUCT:
244 return parse_struct();
245 case Trace::TYPE_BLOB:
247 case Trace::TYPE_OPAQUE:
248 return parse_opaque();
250 std::cerr << "error: unknown type " << c << "\n";
258 Value *Parser::parse_sint() {
259 return new SInt(-(signed long long)read_uint());
263 Value *Parser::parse_uint() {
264 return new UInt(read_uint());
268 Value *Parser::parse_float() {
270 gzread(file, &value, sizeof value);
271 return new Float(value);
275 Value *Parser::parse_double() {
277 gzread(file, &value, sizeof value);
278 return new Float(value);
282 Value *Parser::parse_string() {
283 return new String(read_string());
287 Value *Parser::parse_enum() {
288 size_t id = read_uint();
289 Enum::Signature *sig = lookup(enums, id);
291 std::string name = read_string();
292 Value *value = parse_value();
293 sig = new Enum::Signature(name, value);
297 return new Enum(sig);
301 Value *Parser::parse_bitmask() {
302 size_t id = read_uint();
303 Bitmask::Signature *sig = lookup(bitmasks, id);
305 size_t size = read_uint();
306 sig = new Bitmask::Signature(size);
307 for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
308 it->first = read_string();
309 it->second = read_uint();
310 if (it->second == 0 && it != sig->begin()) {
311 std::cerr << "warning: bitmask " << it->first << " is zero but is not first flag\n";
318 unsigned long long value = read_uint();
320 return new Bitmask(sig, value);
324 Value *Parser::parse_array(void) {
325 size_t len = read_uint();
326 Array *array = new Array(len);
327 for (size_t i = 0; i < len; ++i) {
328 array->values[i] = parse_value();
334 Value *Parser::parse_blob(void) {
335 size_t size = read_uint();
336 Blob *blob = new Blob(size);
338 gzread(file, blob->buf, (unsigned)size);
344 Value *Parser::parse_struct() {
345 size_t id = read_uint();
347 Struct::Signature *sig = lookup(structs, id);
349 sig = new Struct::Signature;
350 sig->name = read_string();
351 unsigned size = read_uint();
352 for (unsigned i = 0; i < size; ++i) {
353 sig->member_names.push_back(read_string());
359 Struct *value = new Struct(sig);
361 for (size_t i = 0; i < sig->member_names.size(); ++i) {
362 value->members[i] = parse_value();
369 Value *Parser::parse_opaque() {
370 unsigned long long addr;
372 return new Pointer(addr);
376 std::string Parser::read_string(void) {
377 size_t len = read_uint();
379 return std::string();
381 char * buf = new char[len];
382 gzread(file, buf, (unsigned)len);
383 std::string value(buf, len);
386 std::cerr << "\tSTRING \"" << value << "\"\n";
392 unsigned long long Parser::read_uint(void) {
393 unsigned long long value = 0;
401 value |= (unsigned long long)(c & 0x7f) << shift;
405 std::cerr << "\tUINT " << value << "\n";
411 inline int Parser::read_byte(void) {
412 int c = gzgetc(file);
415 std::cerr << "\tEOF" << "\n";
417 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
423 } /* namespace Trace */