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 FunctionSig *sig = lookup(functions, id);
142 sig = new FunctionSig;
143 sig->name = read_string();
144 sig->num_args = read_uint();
145 const char **arg_names = new const char *[sig->num_args];
146 for (unsigned i = 0; i < sig->num_args; ++i) {
147 arg_names[i] = read_string();
149 sig->arg_names = arg_names;
154 Call *call = new Call(sig);
155 call->no = next_call_no++;
157 if (parse_call_details(call)) {
158 calls.push_back(call);
165 Call *Parser::parse_leave(void) {
166 unsigned call_no = read_uint();
168 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
169 if ((*it)->no == call_no) {
179 if (parse_call_details(call)) {
188 bool Parser::parse_call_details(Call *call) {
192 case Trace::CALL_END:
194 case Trace::CALL_ARG:
197 case Trace::CALL_RET:
198 call->ret = parse_value();
201 std::cerr << "error: unknown call detail " << c << "\n";
210 void Parser::parse_arg(Call *call) {
211 unsigned index = read_uint();
212 Value *value = parse_value();
213 if (index >= call->args.size()) {
214 call->args.resize(index + 1);
216 call->args[index] = value;
220 Value *Parser::parse_value(void) {
225 case Trace::TYPE_NULL:
228 case Trace::TYPE_FALSE:
229 value = new Bool(false);
231 case Trace::TYPE_TRUE:
232 value = new Bool(true);
234 case Trace::TYPE_SINT:
235 value = parse_sint();
237 case Trace::TYPE_UINT:
238 value = parse_uint();
240 case Trace::TYPE_FLOAT:
241 value = parse_float();
243 case Trace::TYPE_DOUBLE:
244 value = parse_double();
246 case Trace::TYPE_STRING:
247 value = parse_string();
249 case Trace::TYPE_ENUM:
250 value = parse_enum();
252 case Trace::TYPE_BITMASK:
253 value = parse_bitmask();
255 case Trace::TYPE_ARRAY:
256 value = parse_array();
258 case Trace::TYPE_STRUCT:
259 value = parse_struct();
261 case Trace::TYPE_BLOB:
262 value = parse_blob();
264 case Trace::TYPE_OPAQUE:
265 value = parse_opaque();
268 std::cerr << "error: unknown type " << c << "\n";
276 std::cerr << "\tVALUE " << value << "\n";
283 Value *Parser::parse_sint() {
284 return new SInt(-(signed long long)read_uint());
288 Value *Parser::parse_uint() {
289 return new UInt(read_uint());
293 Value *Parser::parse_float() {
295 gzread(file, &value, sizeof value);
296 return new Float(value);
300 Value *Parser::parse_double() {
302 gzread(file, &value, sizeof value);
303 return new Float(value);
307 Value *Parser::parse_string() {
308 return new String(read_string());
312 Value *Parser::parse_enum() {
313 size_t id = read_uint();
314 EnumSig *sig = lookup(enums, id);
318 sig->name = read_string();
319 Value *value = parse_value();
320 sig->value = value->toSInt();
325 return new Enum(sig);
329 Value *Parser::parse_bitmask() {
330 size_t id = read_uint();
331 BitmaskSig *sig = lookup(bitmasks, id);
333 sig = new BitmaskSig;
335 sig->num_flags = read_uint();
336 BitmaskFlag *flags = new BitmaskFlag[sig->num_flags];
337 for (BitmaskFlag *it = flags; it != flags + sig->num_flags; ++it) {
338 it->name = read_string();
339 it->value = read_uint();
340 if (it->value == 0 && it != flags) {
341 std::cerr << "warning: bitmask " << it->name << " is zero but is not first flag\n";
349 unsigned long long value = read_uint();
351 return new Bitmask(sig, value);
355 Value *Parser::parse_array(void) {
356 size_t len = read_uint();
357 Array *array = new Array(len);
358 for (size_t i = 0; i < len; ++i) {
359 array->values[i] = parse_value();
365 Value *Parser::parse_blob(void) {
366 size_t size = read_uint();
367 Blob *blob = new Blob(size);
369 gzread(file, blob->buf, (unsigned)size);
375 Value *Parser::parse_struct() {
376 size_t id = read_uint();
378 StructSig *sig = lookup(structs, id);
382 sig->name = read_string();
383 sig->num_members = read_uint();
384 const char **member_names = new const char *[sig->num_members];
385 for (unsigned i = 0; i < sig->num_members; ++i) {
386 member_names[i] = read_string();
388 sig->member_names = member_names;
393 Struct *value = new Struct(sig);
395 for (size_t i = 0; i < sig->num_members; ++i) {
396 value->members[i] = parse_value();
403 Value *Parser::parse_opaque() {
404 unsigned long long addr;
406 return new Pointer(addr);
410 const char * Parser::read_string(void) {
411 size_t len = read_uint();
412 char * value = new char[len + 1];
414 gzread(file, value, (unsigned)len);
418 std::cerr << "\tSTRING \"" << value << "\"\n";
424 unsigned long long Parser::read_uint(void) {
425 unsigned long long value = 0;
433 value |= (unsigned long long)(c & 0x7f) << shift;
437 std::cerr << "\tUINT " << value << "\n";
443 inline int Parser::read_byte(void) {
444 int c = gzgetc(file);
447 std::cerr << "\tEOF" << "\n";
449 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
455 } /* namespace Trace */