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();
110 std::cerr << "error: unknown event " << c << "\n";
113 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
114 std::cerr << "warning: incomplete call " << (*it)->name() << "\n";
115 std::cerr << **it << "\n";
124 * Helper function to lookup an ID in a vector, resizing the vector if it doesn't fit.
127 T *lookup(std::vector<T *> &map, size_t index) {
128 if (index >= map.size()) {
129 map.resize(index + 1);
137 void Parser::parse_enter(void) {
138 size_t id = read_uint();
140 Call::Signature *sig = lookup(functions, id);
142 sig = new Call::Signature;
143 sig->name = read_string();
144 unsigned size = read_uint();
145 for (unsigned i = 0; i < size; ++i) {
146 sig->arg_names.push_back(read_string());
152 Call *call = new Call(sig);
153 call->no = next_call_no++;
155 if (parse_call_details(call)) {
156 calls.push_back(call);
163 Call *Parser::parse_leave(void) {
164 unsigned call_no = read_uint();
166 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
167 if ((*it)->no == call_no) {
177 if (parse_call_details(call)) {
186 bool Parser::parse_call_details(Call *call) {
190 case Trace::CALL_END:
192 case Trace::CALL_ARG:
195 case Trace::CALL_RET:
196 call->ret = parse_value();
199 std::cerr << "error: unknown call detail " << c << "\n";
208 void Parser::parse_arg(Call *call) {
209 unsigned index = read_uint();
210 Value *value = parse_value();
211 if (index >= call->args.size()) {
212 call->args.resize(index + 1);
214 call->args[index] = value;
218 Value *Parser::parse_value(void) {
223 case Trace::TYPE_NULL:
226 case Trace::TYPE_FALSE:
227 value = new Bool(false);
229 case Trace::TYPE_TRUE:
230 value = new Bool(true);
232 case Trace::TYPE_SINT:
233 value = parse_sint();
235 case Trace::TYPE_UINT:
236 value = parse_uint();
238 case Trace::TYPE_FLOAT:
239 value = parse_float();
241 case Trace::TYPE_DOUBLE:
242 value = parse_double();
244 case Trace::TYPE_STRING:
245 value = parse_string();
247 case Trace::TYPE_ENUM:
248 value = parse_enum();
250 case Trace::TYPE_BITMASK:
251 value = parse_bitmask();
253 case Trace::TYPE_ARRAY:
254 value = parse_array();
256 case Trace::TYPE_STRUCT:
257 value = parse_struct();
259 case Trace::TYPE_BLOB:
260 value = parse_blob();
262 case Trace::TYPE_OPAQUE:
263 value = parse_opaque();
266 std::cerr << "error: unknown type " << c << "\n";
274 std::cerr << "\tVALUE " << value << "\n";
281 Value *Parser::parse_sint() {
282 return new SInt(-(signed long long)read_uint());
286 Value *Parser::parse_uint() {
287 return new UInt(read_uint());
291 Value *Parser::parse_float() {
293 gzread(file, &value, sizeof value);
294 return new Float(value);
298 Value *Parser::parse_double() {
300 gzread(file, &value, sizeof value);
301 return new Float(value);
305 Value *Parser::parse_string() {
306 return new String(read_string());
310 Value *Parser::parse_enum() {
311 size_t id = read_uint();
312 Enum::Signature *sig = lookup(enums, id);
314 const char *name = read_string();
315 Value *value = parse_value();
316 sig = new Enum::Signature(name, value);
320 return new Enum(sig);
324 Value *Parser::parse_bitmask() {
325 size_t id = read_uint();
326 BitmaskSig *sig = lookup(bitmasks, id);
328 size_t count = read_uint();
329 BitmaskVal *values = new BitmaskVal[count];
330 for (BitmaskVal *it = values; it != values + count; ++it) {
331 it->name = read_string();
332 it->value = read_uint();
333 if (it->value == 0 && it != values) {
334 std::cerr << "warning: bitmask " << it->name << " is zero but is not first flag\n";
337 sig = new BitmaskSig;
340 sig->values = values;
345 unsigned long long value = read_uint();
347 return new Bitmask(sig, value);
351 Value *Parser::parse_array(void) {
352 size_t len = read_uint();
353 Array *array = new Array(len);
354 for (size_t i = 0; i < len; ++i) {
355 array->values[i] = parse_value();
361 Value *Parser::parse_blob(void) {
362 size_t size = read_uint();
363 Blob *blob = new Blob(size);
365 gzread(file, blob->buf, (unsigned)size);
371 Value *Parser::parse_struct() {
372 size_t id = read_uint();
374 Struct::Signature *sig = lookup(structs, id);
376 sig = new Struct::Signature;
377 sig->name = read_string();
378 unsigned size = read_uint();
379 for (unsigned i = 0; i < size; ++i) {
380 sig->member_names.push_back(read_string());
386 Struct *value = new Struct(sig);
388 for (size_t i = 0; i < sig->member_names.size(); ++i) {
389 value->members[i] = parse_value();
396 Value *Parser::parse_opaque() {
397 unsigned long long addr;
399 return new Pointer(addr);
403 const char * Parser::read_string(void) {
404 size_t len = read_uint();
405 char * value = new char[len + 1];
407 gzread(file, value, (unsigned)len);
411 std::cerr << "\tSTRING \"" << value << "\"\n";
417 unsigned long long Parser::read_uint(void) {
418 unsigned long long value = 0;
426 value |= (unsigned long long)(c & 0x7f) << shift;
430 std::cerr << "\tUINT " << value << "\n";
436 inline int Parser::read_byte(void) {
437 int c = gzgetc(file);
440 std::cerr << "\tEOF" << "\n";
442 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
448 } /* namespace Trace */