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 **************************************************************************/
31 #include "trace_file.hpp"
32 #include "trace_parser.hpp"
35 #define TRACE_VERBOSE 0
53 bool Parser::open(const char *filename) {
55 file = File::createForRead(filename);
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(Container &c)
83 deleteAll(c.begin(), c.end());
87 void Parser::close(void) {
96 // Delete all signature data. Signatures are mere structures which don't
97 // own their own memory, so we need to destroy all data we created here.
99 for (FunctionMap::iterator it = functions.begin(); it != functions.end(); ++it) {
100 FunctionSigState *sig = *it;
103 for (unsigned arg = 0; arg < sig->num_args; ++arg) {
104 delete [] sig->arg_names[arg];
106 delete [] sig->arg_names;
112 for (StructMap::iterator it = structs.begin(); it != structs.end(); ++it) {
113 StructSigState *sig = *it;
116 for (unsigned member = 0; member < sig->num_members; ++member) {
117 delete [] sig->member_names[member];
119 delete [] sig->member_names;
125 for (EnumMap::iterator it = enums.begin(); it != enums.end(); ++it) {
126 EnumSigState *sig = *it;
134 for (BitmaskMap::iterator it = bitmasks.begin(); it != bitmasks.end(); ++it) {
135 BitmaskSigState *sig = *it;
137 for (unsigned flag = 0; flag < sig->num_flags; ++flag) {
138 delete [] sig->flags[flag].name;
140 delete [] sig->flags;
150 void Parser::getBookmark(ParseBookmark &bookmark) {
151 bookmark.offset = file->currentOffset();
152 bookmark.next_call_no = next_call_no;
156 void Parser::setBookmark(const ParseBookmark &bookmark) {
157 file->setCurrentOffset(bookmark.offset);
158 next_call_no = bookmark.next_call_no;
160 // Simply ignore all pending calls
165 Call *Parser::parse_call(Mode mode) {
169 case trace::EVENT_ENTER:
172 case trace::EVENT_LEAVE:
173 return parse_leave(mode);
175 std::cerr << "error: unknown event " << c << "\n";
178 if (!calls.empty()) {
179 Call *call = calls.front();
180 std::cerr << call->no << ": warning: incomplete call " << call->name() << "\n";
191 * Helper function to lookup an ID in a vector, resizing the vector if it doesn't fit.
194 T *lookup(std::vector<T *> &map, size_t index) {
195 if (index >= map.size()) {
196 map.resize(index + 1);
204 FunctionSig *Parser::parse_function_sig(void) {
205 size_t id = read_uint();
207 FunctionSigState *sig = lookup(functions, id);
210 /* parse the signature */
211 sig = new FunctionSigState;
213 sig->name = read_string();
214 sig->num_args = read_uint();
215 const char **arg_names = new const char *[sig->num_args];
216 for (unsigned i = 0; i < sig->num_args; ++i) {
217 arg_names[i] = read_string();
219 sig->arg_names = arg_names;
220 sig->offset = file->currentOffset();
222 } else if (file->currentOffset() < sig->offset) {
223 /* skip over the signature */
224 skip_string(); /* name */
225 unsigned num_args = read_uint();
226 for (unsigned i = 0; i < num_args; ++i) {
227 skip_string(); /*arg_name*/
236 StructSig *Parser::parse_struct_sig() {
237 size_t id = read_uint();
239 StructSigState *sig = lookup(structs, id);
242 /* parse the signature */
243 sig = new StructSigState;
245 sig->name = read_string();
246 sig->num_members = read_uint();
247 const char **member_names = new const char *[sig->num_members];
248 for (unsigned i = 0; i < sig->num_members; ++i) {
249 member_names[i] = read_string();
251 sig->member_names = member_names;
252 sig->offset = file->currentOffset();
254 } else if (file->currentOffset() < sig->offset) {
255 /* skip over the signature */
256 skip_string(); /* name */
257 unsigned num_members = read_uint();
258 for (unsigned i = 0; i < num_members; ++i) {
259 skip_string(); /* member_name */
268 EnumSig *Parser::parse_enum_sig() {
269 size_t id = read_uint();
271 EnumSigState *sig = lookup(enums, id);
274 /* parse the signature */
275 sig = new EnumSigState;
277 sig->name = read_string();
278 Value *value = parse_value();
279 sig->value = value->toSInt();
281 sig->offset = file->currentOffset();
283 } else if (file->currentOffset() < sig->offset) {
284 /* skip over the signature */
285 skip_string(); /*name*/
294 BitmaskSig *Parser::parse_bitmask_sig() {
295 size_t id = read_uint();
297 BitmaskSigState *sig = lookup(bitmasks, id);
300 /* parse the signature */
301 sig = new BitmaskSigState;
303 sig->num_flags = read_uint();
304 BitmaskFlag *flags = new BitmaskFlag[sig->num_flags];
305 for (BitmaskFlag *it = flags; it != flags + sig->num_flags; ++it) {
306 it->name = read_string();
307 it->value = read_uint();
308 if (it->value == 0 && it != flags) {
309 std::cerr << "warning: bitmask " << it->name << " is zero but is not first flag\n";
313 sig->offset = file->currentOffset();
315 } else if (file->currentOffset() < sig->offset) {
316 /* skip over the signature */
317 int num_flags = read_uint();
318 for (int i = 0; i < num_flags; ++i) {
319 skip_string(); /*name */
320 skip_uint(); /* value */
329 void Parser::parse_enter(Mode mode) {
330 FunctionSig *sig = parse_function_sig();
332 Call *call = new Call(sig);
334 call->no = next_call_no++;
336 if (parse_call_details(call, mode)) {
337 calls.push_back(call);
344 Call *Parser::parse_leave(Mode mode) {
345 unsigned call_no = read_uint();
347 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
348 if ((*it)->no == call_no) {
358 if (parse_call_details(call, mode)) {
367 bool Parser::parse_call_details(Call *call, Mode mode) {
371 case trace::CALL_END:
373 case trace::CALL_ARG:
374 parse_arg(call, mode);
376 case trace::CALL_RET:
377 call->ret = parse_value(mode);
380 std::cerr << "error: ("<<call->name()<< ") unknown call detail "
390 void Parser::parse_arg(Call *call, Mode mode) {
391 unsigned index = read_uint();
392 Value *value = parse_value(mode);
394 if (index >= call->args.size()) {
395 call->args.resize(index + 1);
397 call->args[index] = value;
402 Value *Parser::parse_value(void) {
407 case trace::TYPE_NULL:
410 case trace::TYPE_FALSE:
411 value = new Bool(false);
413 case trace::TYPE_TRUE:
414 value = new Bool(true);
416 case trace::TYPE_SINT:
417 value = parse_sint();
419 case trace::TYPE_UINT:
420 value = parse_uint();
422 case trace::TYPE_FLOAT:
423 value = parse_float();
425 case trace::TYPE_DOUBLE:
426 value = parse_double();
428 case trace::TYPE_STRING:
429 value = parse_string();
431 case trace::TYPE_ENUM:
432 value = parse_enum();
434 case trace::TYPE_BITMASK:
435 value = parse_bitmask();
437 case trace::TYPE_ARRAY:
438 value = parse_array();
440 case trace::TYPE_STRUCT:
441 value = parse_struct();
443 case trace::TYPE_BLOB:
444 value = parse_blob();
446 case trace::TYPE_OPAQUE:
447 value = parse_opaque();
450 std::cerr << "error: unknown type " << c << "\n";
458 std::cerr << "\tVALUE " << value << "\n";
465 void Parser::scan_value(void) {
468 case trace::TYPE_NULL:
469 case trace::TYPE_FALSE:
470 case trace::TYPE_TRUE:
472 case trace::TYPE_SINT:
475 case trace::TYPE_UINT:
478 case trace::TYPE_FLOAT:
481 case trace::TYPE_DOUBLE:
484 case trace::TYPE_STRING:
487 case trace::TYPE_ENUM:
490 case trace::TYPE_BITMASK:
493 case trace::TYPE_ARRAY:
496 case trace::TYPE_STRUCT:
499 case trace::TYPE_BLOB:
502 case trace::TYPE_OPAQUE:
506 std::cerr << "error: unknown type " << c << "\n";
514 Value *Parser::parse_sint() {
515 return new SInt(-(signed long long)read_uint());
519 void Parser::scan_sint() {
524 Value *Parser::parse_uint() {
525 return new UInt(read_uint());
529 void Parser::scan_uint() {
534 Value *Parser::parse_float() {
536 file->read(&value, sizeof value);
537 return new Float(value);
541 void Parser::scan_float() {
542 file->skip(sizeof(float));
546 Value *Parser::parse_double() {
548 file->read(&value, sizeof value);
549 return new Double(value);
553 void Parser::scan_double() {
554 file->skip(sizeof(double));
558 Value *Parser::parse_string() {
559 return new String(read_string());
563 void Parser::scan_string() {
568 Value *Parser::parse_enum() {
569 EnumSig *sig = parse_enum_sig();
570 return new Enum(sig);
574 void Parser::scan_enum() {
579 Value *Parser::parse_bitmask() {
580 BitmaskSig *sig = parse_bitmask_sig();
582 unsigned long long value = read_uint();
584 return new Bitmask(sig, value);
588 void Parser::scan_bitmask() {
590 skip_uint(); /* value */
594 Value *Parser::parse_array(void) {
595 size_t len = read_uint();
596 Array *array = new Array(len);
597 for (size_t i = 0; i < len; ++i) {
598 array->values[i] = parse_value();
604 void Parser::scan_array(void) {
605 size_t len = read_uint();
606 for (size_t i = 0; i < len; ++i) {
612 Value *Parser::parse_blob(void) {
613 size_t size = read_uint();
614 Blob *blob = new Blob(size);
616 file->read(blob->buf, (unsigned)size);
622 void Parser::scan_blob(void) {
623 size_t size = read_uint();
630 Value *Parser::parse_struct() {
631 StructSig *sig = parse_struct_sig();
632 Struct *value = new Struct(sig);
634 for (size_t i = 0; i < sig->num_members; ++i) {
635 value->members[i] = parse_value();
642 void Parser::scan_struct() {
643 StructSig *sig = parse_struct_sig();
644 for (size_t i = 0; i < sig->num_members; ++i) {
650 Value *Parser::parse_opaque() {
651 unsigned long long addr;
653 return new Pointer(addr);
657 void Parser::scan_opaque() {
662 const char * Parser::read_string(void) {
663 size_t len = read_uint();
664 char * value = new char[len + 1];
666 file->read(value, (unsigned)len);
670 std::cerr << "\tSTRING \"" << value << "\"\n";
676 void Parser::skip_string(void) {
677 size_t len = read_uint();
682 unsigned long long Parser::read_uint(void) {
683 unsigned long long value = 0;
691 value |= (unsigned long long)(c & 0x7f) << shift;
695 std::cerr << "\tUINT " << value << "\n";
701 void Parser::skip_uint(void) {
712 inline int Parser::read_byte(void) {
713 int c = file->getc();
716 std::cerr << "\tEOF" << "\n";
718 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
724 inline void Parser::skip_byte(void) {
729 } /* namespace trace */