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 **************************************************************************/
32 #include "trace_parser.hpp"
35 #define TRACE_VERBOSE 0
53 bool Parser::open(const char *filename) {
54 file = gzopen(filename, "rb");
59 version = read_uint();
60 if (version > TRACE_VERSION) {
61 std::cerr << "error: unsupported format version" << version << "\n";
68 template <typename Iter>
70 deleteAll(Iter begin, Iter end)
72 while (begin != end) {
78 template <typename Container>
80 deleteAll(const Container &c)
82 deleteAll(c.begin(), c.end());
85 void Parser::close(void) {
99 Call *Parser::parse_call(void) {
103 case Trace::EVENT_ENTER:
106 case Trace::EVENT_LEAVE:
107 return parse_leave();
108 case Trace::EVENT_MESSAGE:
109 std::cerr << "message: " << read_string() << "\n";
112 std::cerr << "error: unknown call detail " << 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 parse_call_details(call);
156 calls.push_back(call);
160 Call *Parser::parse_leave(void) {
161 unsigned call_no = read_uint();
164 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
165 if ((*it)->no == call_no) {
175 parse_call_details(call);
180 void Parser::parse_call_details(Call *call) {
184 case Trace::CALL_END:
186 case Trace::CALL_ARG:
189 case Trace::CALL_RET:
190 call->ret = parse_value();
193 std::cerr << "error: unknown call detail " << c << "\n";
203 void Parser::parse_arg(Call *call) {
204 unsigned index = read_uint();
205 Value *value = parse_value();
206 if (index >= call->args.size()) {
207 call->args.resize(index + 1);
209 call->args[index] = value;
213 Value *Parser::parse_value(void) {
217 case Trace::TYPE_NULL:
219 case Trace::TYPE_FALSE:
220 return new Bool(false);
221 case Trace::TYPE_TRUE:
222 return new Bool(true);
223 case Trace::TYPE_SINT:
225 case Trace::TYPE_UINT:
227 case Trace::TYPE_FLOAT:
228 return parse_float();
229 case Trace::TYPE_DOUBLE:
230 return parse_double();
231 case Trace::TYPE_STRING:
232 return parse_string();
233 case Trace::TYPE_ENUM:
235 case Trace::TYPE_BITMASK:
236 return parse_bitmask();
237 case Trace::TYPE_ARRAY:
238 return parse_array();
239 case Trace::TYPE_STRUCT:
240 return parse_struct();
241 case Trace::TYPE_BLOB:
243 case Trace::TYPE_OPAQUE:
244 return parse_opaque();
246 std::cerr << "error: unknown type " << c << "\n";
253 Value *Parser::parse_sint() {
254 return new SInt(-(signed long long)read_uint());
258 Value *Parser::parse_uint() {
259 return new UInt(read_uint());
263 Value *Parser::parse_float() {
265 gzread(file, &value, sizeof value);
266 return new Float(value);
270 Value *Parser::parse_double() {
272 gzread(file, &value, sizeof value);
273 return new Float(value);
277 Value *Parser::parse_string() {
278 return new String(read_string());
282 Value *Parser::parse_enum() {
283 size_t id = read_uint();
284 Enum::Signature *sig = lookup(enums, id);
286 std::string name = read_string();
287 Value *value = parse_value();
288 sig = new Enum::Signature(name, value);
292 return new Enum(sig);
296 Value *Parser::parse_bitmask() {
297 size_t id = read_uint();
298 Bitmask::Signature *sig = lookup(bitmasks, id);
300 size_t size = read_uint();
301 sig = new Bitmask::Signature(size);
302 for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
303 it->first = read_string();
304 it->second = read_uint();
305 if (it->second == 0 && it != sig->begin()) {
306 std::cerr << "warning: bitmask " << it->first << " is zero but is not first flag\n";
313 unsigned long long value = read_uint();
315 return new Bitmask(sig, value);
319 Value *Parser::parse_array(void) {
320 size_t len = read_uint();
321 Array *array = new Array(len);
322 for (size_t i = 0; i < len; ++i) {
323 array->values[i] = parse_value();
329 Value *Parser::parse_blob(void) {
330 size_t size = read_uint();
331 Blob *blob = new Blob(size);
333 gzread(file, blob->buf, (unsigned)size);
339 Value *Parser::parse_struct() {
340 size_t id = read_uint();
342 Struct::Signature *sig = lookup(structs, id);
344 sig = new Struct::Signature;
345 sig->name = read_string();
346 unsigned size = read_uint();
347 for (unsigned i = 0; i < size; ++i) {
348 sig->member_names.push_back(read_string());
354 Struct *value = new Struct(sig);
356 for (size_t i = 0; i < sig->member_names.size(); ++i) {
357 value->members[i] = parse_value();
364 Value *Parser::parse_opaque() {
365 unsigned long long addr;
367 return new Pointer(addr);
371 std::string Parser::read_string(void) {
372 size_t len = read_uint();
374 return std::string();
376 char * buf = new char[len];
377 gzread(file, buf, (unsigned)len);
378 std::string value(buf, len);
381 std::cerr << "\tSTRING \"" << value << "\"\n";
387 unsigned long long Parser::read_uint(void) {
388 unsigned long long value = 0;
396 value |= (unsigned long long)(c & 0x7f) << shift;
400 std::cerr << "\tUINT " << value << "\n";
406 inline int Parser::read_byte(void) {
407 int c = gzgetc(file);
410 std::cerr << "\tEOF" << "\n";
412 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
418 } /* namespace Trace */