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_snappyfile.hpp"
33 #include "trace_parser.hpp"
36 #define TRACE_VERBOSE 0
54 bool Parser::open(const char *filename) {
56 if (File::isZLibCompressed(filename)) {
59 file = new SnappyFile;
62 if (!file->open(filename, File::Read)) {
66 version = read_uint();
67 if (version > TRACE_VERSION) {
68 std::cerr << "error: unsupported trace format version " << version << "\n";
75 template <typename Iter>
77 deleteAll(Iter begin, Iter end)
79 while (begin != end) {
85 template <typename Container>
87 deleteAll(Container &c)
89 deleteAll(c.begin(), c.end());
93 void Parser::close(void) {
102 // Delete all signature data. Signatures are mere structures which don't
103 // own their own memory, so we need to destroy all data we created here.
105 for (FunctionMap::iterator it = functions.begin(); it != functions.end(); ++it) {
106 FunctionSigState *sig = *it;
109 for (unsigned arg = 0; arg < sig->num_args; ++arg) {
110 delete [] sig->arg_names[arg];
112 delete [] sig->arg_names;
118 for (StructMap::iterator it = structs.begin(); it != structs.end(); ++it) {
119 StructSigState *sig = *it;
122 for (unsigned member = 0; member < sig->num_members; ++member) {
123 delete [] sig->member_names[member];
125 delete [] sig->member_names;
131 for (EnumMap::iterator it = enums.begin(); it != enums.end(); ++it) {
132 EnumSigState *sig = *it;
140 for (BitmaskMap::iterator it = bitmasks.begin(); it != bitmasks.end(); ++it) {
141 BitmaskSigState *sig = *it;
143 for (unsigned flag = 0; flag < sig->num_flags; ++flag) {
144 delete [] sig->flags[flag].name;
146 delete [] sig->flags;
154 void Parser::getBookmark(ParseBookmark &bookmark) {
155 bookmark.offset = file->currentOffset();
156 bookmark.next_call_no = next_call_no;
160 void Parser::setBookmark(const ParseBookmark &bookmark) {
161 file->setCurrentOffset(bookmark.offset);
162 next_call_no = bookmark.next_call_no;
164 // Simply ignore all pending calls
169 Call *Parser::parse_call(Mode mode) {
173 case Trace::EVENT_ENTER:
176 case Trace::EVENT_LEAVE:
177 return parse_leave(mode);
179 std::cerr << "error: unknown event " << c << "\n";
182 if (!calls.empty()) {
183 Call *call = calls.front();
184 std::cerr << call->no << ": warning: incomplete call " << call->name() << "\n";
195 * Helper function to lookup an ID in a vector, resizing the vector if it doesn't fit.
198 T *lookup(std::vector<T *> &map, size_t index) {
199 if (index >= map.size()) {
200 map.resize(index + 1);
208 FunctionSig *Parser::parse_function_sig(void) {
209 size_t id = read_uint();
211 FunctionSigState *sig = lookup(functions, id);
214 /* parse the signature */
215 sig = new FunctionSigState;
217 sig->name = read_string();
218 sig->num_args = read_uint();
219 const char **arg_names = new const char *[sig->num_args];
220 for (unsigned i = 0; i < sig->num_args; ++i) {
221 arg_names[i] = read_string();
223 sig->arg_names = arg_names;
224 sig->offset = file->currentOffset();
226 } else if (file->currentOffset() < sig->offset) {
227 /* skip over the signature */
228 skip_string(); /* name */
229 int num_args = read_uint();
230 for (unsigned i = 0; i < num_args; ++i) {
231 skip_string(); /*arg_name*/
240 StructSig *Parser::parse_struct_sig() {
241 size_t id = read_uint();
243 StructSigState *sig = lookup(structs, id);
246 /* parse the signature */
247 sig = new StructSigState;
249 sig->name = read_string();
250 sig->num_members = read_uint();
251 const char **member_names = new const char *[sig->num_members];
252 for (unsigned i = 0; i < sig->num_members; ++i) {
253 member_names[i] = read_string();
255 sig->member_names = member_names;
256 sig->offset = file->currentOffset();
258 } else if (file->currentOffset() < sig->offset) {
259 /* skip over the signature */
260 skip_string(); /* name */
261 unsigned num_members = read_uint();
262 for (unsigned i = 0; i < num_members; ++i) {
263 skip_string(); /* member_name */
272 EnumSig *Parser::parse_enum_sig() {
273 size_t id = read_uint();
275 EnumSigState *sig = lookup(enums, id);
278 /* parse the signature */
279 sig = new EnumSigState;
281 sig->name = read_string();
282 Value *value = parse_value();
283 sig->value = value->toSInt();
285 sig->offset = file->currentOffset();
287 } else if (file->currentOffset() < sig->offset) {
288 /* skip over the signature */
289 skip_string(); /*name*/
298 BitmaskSig *Parser::parse_bitmask_sig() {
299 size_t id = read_uint();
301 BitmaskSigState *sig = lookup(bitmasks, id);
304 /* parse the signature */
305 sig = new BitmaskSigState;
307 sig->num_flags = read_uint();
308 BitmaskFlag *flags = new BitmaskFlag[sig->num_flags];
309 for (BitmaskFlag *it = flags; it != flags + sig->num_flags; ++it) {
310 it->name = read_string();
311 it->value = read_uint();
312 if (it->value == 0 && it != flags) {
313 std::cerr << "warning: bitmask " << it->name << " is zero but is not first flag\n";
317 sig->offset = file->currentOffset();
319 } else if (file->currentOffset() < sig->offset) {
320 /* skip over the signature */
321 int num_flags = read_uint();
322 for (int i = 0; i < num_flags; ++i) {
323 skip_string(); /*name */
324 skip_uint(); /* value */
333 void Parser::parse_enter(Mode mode) {
334 FunctionSig *sig = parse_function_sig();
336 Call *call = new Call(sig);
338 call->no = next_call_no++;
340 if (parse_call_details(call, mode)) {
341 calls.push_back(call);
348 Call *Parser::parse_leave(Mode mode) {
349 unsigned call_no = read_uint();
351 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
352 if ((*it)->no == call_no) {
362 if (parse_call_details(call, mode)) {
371 bool Parser::parse_call_details(Call *call, Mode mode) {
375 case Trace::CALL_END:
377 case Trace::CALL_ARG:
378 parse_arg(call, mode);
380 case Trace::CALL_RET:
381 call->ret = parse_value(mode);
384 std::cerr << "error: ("<<call->name()<< ") unknown call detail "
394 void Parser::parse_arg(Call *call, Mode mode) {
395 unsigned index = read_uint();
396 Value *value = parse_value(mode);
398 if (index >= call->args.size()) {
399 call->args.resize(index + 1);
401 call->args[index] = value;
406 Value *Parser::parse_value(void) {
411 case Trace::TYPE_NULL:
414 case Trace::TYPE_FALSE:
415 value = new Bool(false);
417 case Trace::TYPE_TRUE:
418 value = new Bool(true);
420 case Trace::TYPE_SINT:
421 value = parse_sint();
423 case Trace::TYPE_UINT:
424 value = parse_uint();
426 case Trace::TYPE_FLOAT:
427 value = parse_float();
429 case Trace::TYPE_DOUBLE:
430 value = parse_double();
432 case Trace::TYPE_STRING:
433 value = parse_string();
435 case Trace::TYPE_ENUM:
436 value = parse_enum();
438 case Trace::TYPE_BITMASK:
439 value = parse_bitmask();
441 case Trace::TYPE_ARRAY:
442 value = parse_array();
444 case Trace::TYPE_STRUCT:
445 value = parse_struct();
447 case Trace::TYPE_BLOB:
448 value = parse_blob();
450 case Trace::TYPE_OPAQUE:
451 value = parse_opaque();
454 std::cerr << "error: unknown type " << c << "\n";
462 std::cerr << "\tVALUE " << value << "\n";
469 void Parser::scan_value(void) {
472 case Trace::TYPE_NULL:
473 case Trace::TYPE_FALSE:
474 case Trace::TYPE_TRUE:
476 case Trace::TYPE_SINT:
479 case Trace::TYPE_UINT:
482 case Trace::TYPE_FLOAT:
485 case Trace::TYPE_DOUBLE:
488 case Trace::TYPE_STRING:
491 case Trace::TYPE_ENUM:
494 case Trace::TYPE_BITMASK:
497 case Trace::TYPE_ARRAY:
500 case Trace::TYPE_STRUCT:
503 case Trace::TYPE_BLOB:
506 case Trace::TYPE_OPAQUE:
510 std::cerr << "error: unknown type " << c << "\n";
518 Value *Parser::parse_sint() {
519 return new SInt(-(signed long long)read_uint());
523 void Parser::scan_sint() {
528 Value *Parser::parse_uint() {
529 return new UInt(read_uint());
533 void Parser::scan_uint() {
538 Value *Parser::parse_float() {
540 file->read(&value, sizeof value);
541 return new Float(value);
545 void Parser::scan_float() {
546 file->skip(sizeof(float));
550 Value *Parser::parse_double() {
552 file->read(&value, sizeof value);
553 return new Float(value);
557 void Parser::scan_double() {
558 file->skip(sizeof(double));
562 Value *Parser::parse_string() {
563 return new String(read_string());
567 void Parser::scan_string() {
572 Value *Parser::parse_enum() {
573 EnumSig *sig = parse_enum_sig();
574 return new Enum(sig);
578 void Parser::scan_enum() {
583 Value *Parser::parse_bitmask() {
584 BitmaskSig *sig = parse_bitmask_sig();
586 unsigned long long value = read_uint();
588 return new Bitmask(sig, value);
592 void Parser::scan_bitmask() {
594 skip_uint(); /* value */
598 Value *Parser::parse_array(void) {
599 size_t len = read_uint();
600 Array *array = new Array(len);
601 for (size_t i = 0; i < len; ++i) {
602 array->values[i] = parse_value();
608 void Parser::scan_array(void) {
609 size_t len = read_uint();
610 for (size_t i = 0; i < len; ++i) {
616 Value *Parser::parse_blob(void) {
617 size_t size = read_uint();
618 Blob *blob = new Blob(size);
620 file->read(blob->buf, (unsigned)size);
626 void Parser::scan_blob(void) {
627 size_t size = read_uint();
634 Value *Parser::parse_struct() {
635 StructSig *sig = parse_struct_sig();
636 Struct *value = new Struct(sig);
638 for (size_t i = 0; i < sig->num_members; ++i) {
639 value->members[i] = parse_value();
646 void Parser::scan_struct() {
647 StructSig *sig = parse_struct_sig();
648 for (size_t i = 0; i < sig->num_members; ++i) {
654 Value *Parser::parse_opaque() {
655 unsigned long long addr;
657 return new Pointer(addr);
661 void Parser::scan_opaque() {
666 const char * Parser::read_string(void) {
667 size_t len = read_uint();
668 char * value = new char[len + 1];
670 file->read(value, (unsigned)len);
674 std::cerr << "\tSTRING \"" << value << "\"\n";
680 void Parser::skip_string(void) {
681 size_t len = read_uint();
686 unsigned long long Parser::read_uint(void) {
687 unsigned long long value = 0;
695 value |= (unsigned long long)(c & 0x7f) << shift;
699 std::cerr << "\tUINT " << value << "\n";
705 void Parser::skip_uint(void) {
716 inline int Parser::read_byte(void) {
717 int c = file->getc();
720 std::cerr << "\tEOF" << "\n";
722 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
728 inline void Parser::skip_byte(void) {
733 } /* namespace Trace */