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) {
222 case Trace::TYPE_NULL:
224 case Trace::TYPE_FALSE:
225 return new Bool(false);
226 case Trace::TYPE_TRUE:
227 return new Bool(true);
228 case Trace::TYPE_SINT:
230 case Trace::TYPE_UINT:
232 case Trace::TYPE_FLOAT:
233 return parse_float();
234 case Trace::TYPE_DOUBLE:
235 return parse_double();
236 case Trace::TYPE_STRING:
237 return parse_string();
238 case Trace::TYPE_ENUM:
240 case Trace::TYPE_BITMASK:
241 return parse_bitmask();
242 case Trace::TYPE_ARRAY:
243 return parse_array();
244 case Trace::TYPE_STRUCT:
245 return parse_struct();
246 case Trace::TYPE_BLOB:
248 case Trace::TYPE_OPAQUE:
249 return parse_opaque();
251 std::cerr << "error: unknown type " << c << "\n";
259 Value *Parser::parse_sint() {
260 return new SInt(-(signed long long)read_uint());
264 Value *Parser::parse_uint() {
265 return new UInt(read_uint());
269 Value *Parser::parse_float() {
271 gzread(file, &value, sizeof value);
272 return new Float(value);
276 Value *Parser::parse_double() {
278 gzread(file, &value, sizeof value);
279 return new Float(value);
283 Value *Parser::parse_string() {
284 return new String(read_string());
288 Value *Parser::parse_enum() {
289 size_t id = read_uint();
290 Enum::Signature *sig = lookup(enums, id);
292 std::string name = read_string();
293 Value *value = parse_value();
294 sig = new Enum::Signature(name, value);
298 return new Enum(sig);
302 Value *Parser::parse_bitmask() {
303 size_t id = read_uint();
304 Bitmask::Signature *sig = lookup(bitmasks, id);
306 size_t size = read_uint();
307 sig = new Bitmask::Signature(size);
308 for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
309 it->first = read_string();
310 it->second = read_uint();
311 if (it->second == 0 && it != sig->begin()) {
312 std::cerr << "warning: bitmask " << it->first << " is zero but is not first flag\n";
319 unsigned long long value = read_uint();
321 return new Bitmask(sig, value);
325 Value *Parser::parse_array(void) {
326 size_t len = read_uint();
327 Array *array = new Array(len);
328 for (size_t i = 0; i < len; ++i) {
329 array->values[i] = parse_value();
335 Value *Parser::parse_blob(void) {
336 size_t size = read_uint();
337 Blob *blob = new Blob(size);
339 gzread(file, blob->buf, (unsigned)size);
345 Value *Parser::parse_struct() {
346 size_t id = read_uint();
348 Struct::Signature *sig = lookup(structs, id);
350 sig = new Struct::Signature;
351 sig->name = read_string();
352 unsigned size = read_uint();
353 for (unsigned i = 0; i < size; ++i) {
354 sig->member_names.push_back(read_string());
360 Struct *value = new Struct(sig);
362 for (size_t i = 0; i < sig->member_names.size(); ++i) {
363 value->members[i] = parse_value();
370 Value *Parser::parse_opaque() {
371 unsigned long long addr;
373 return new Pointer(addr);
377 std::string Parser::read_string(void) {
378 size_t len = read_uint();
380 return std::string();
382 char * buf = new char[len];
383 gzread(file, buf, (unsigned)len);
384 std::string value(buf, len);
387 std::cerr << "\tSTRING \"" << value << "\"\n";
393 unsigned long long Parser::read_uint(void) {
394 unsigned long long value = 0;
402 value |= (unsigned long long)(c & 0x7f) << shift;
406 std::cerr << "\tUINT " << value << "\n";
412 inline int Parser::read_byte(void) {
413 int c = gzgetc(file);
416 std::cerr << "\tEOF" << "\n";
418 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
424 } /* namespace Trace */