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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/profiler/profile-generator.h" | 5 #include "src/profiler/profile-generator.h" |
6 | 6 |
7 #include "src/ast/scopeinfo.h" | 7 #include "src/ast/scopeinfo.h" |
8 #include "src/base/adapters.h" | 8 #include "src/base/adapters.h" |
9 #include "src/debug/debug.h" | 9 #include "src/debug/debug.h" |
10 #include "src/deoptimizer.h" | 10 #include "src/deoptimizer.h" |
11 #include "src/global-handles.h" | 11 #include "src/global-handles.h" |
12 #include "src/profiler/cpu-profiler.h" | 12 #include "src/profiler/cpu-profiler.h" |
13 #include "src/profiler/profile-generator-inl.h" | 13 #include "src/profiler/profile-generator-inl.h" |
14 #include "src/profiler/tick-sample.h" | |
15 #include "src/unicode.h" | 14 #include "src/unicode.h" |
16 | 15 |
17 namespace v8 { | 16 namespace v8 { |
18 namespace internal { | 17 namespace internal { |
19 | 18 |
20 | 19 |
21 JITLineInfoTable::JITLineInfoTable() {} | 20 JITLineInfoTable::JITLineInfoTable() {} |
22 | 21 |
23 | 22 |
24 JITLineInfoTable::~JITLineInfoTable() {} | 23 JITLineInfoTable::~JITLineInfoTable() {} |
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571 // for a JS function. Then, the detected source line is passed to | 570 // for a JS function. Then, the detected source line is passed to |
572 // ProfileNode to increase the tick count for this source line. | 571 // ProfileNode to increase the tick count for this source line. |
573 int src_line = v8::CpuProfileNode::kNoLineNumberInfo; | 572 int src_line = v8::CpuProfileNode::kNoLineNumberInfo; |
574 bool src_line_not_found = true; | 573 bool src_line_not_found = true; |
575 | 574 |
576 if (sample.pc != nullptr) { | 575 if (sample.pc != nullptr) { |
577 if (sample.has_external_callback && sample.state == EXTERNAL) { | 576 if (sample.has_external_callback && sample.state == EXTERNAL) { |
578 // Don't use PC when in external callback code, as it can point | 577 // Don't use PC when in external callback code, as it can point |
579 // inside callback's code, and we will erroneously report | 578 // inside callback's code, and we will erroneously report |
580 // that a callback calls itself. | 579 // that a callback calls itself. |
581 entries.push_back(code_map_.FindEntry(sample.external_callback_entry)); | 580 entries.push_back(code_map_.FindEntry( |
| 581 reinterpret_cast<Address>(sample.external_callback_entry))); |
582 } else { | 582 } else { |
583 CodeEntry* pc_entry = code_map_.FindEntry(sample.pc); | 583 CodeEntry* pc_entry = |
| 584 code_map_.FindEntry(reinterpret_cast<Address>(sample.pc)); |
584 // If there is no pc_entry we're likely in native code. | 585 // If there is no pc_entry we're likely in native code. |
585 // Find out, if top of stack was pointing inside a JS function | 586 // Find out, if top of stack was pointing inside a JS function |
586 // meaning that we have encountered a frameless invocation. | 587 // meaning that we have encountered a frameless invocation. |
587 if (!pc_entry && !sample.has_external_callback) { | 588 if (!pc_entry && !sample.has_external_callback) { |
588 pc_entry = code_map_.FindEntry(sample.tos); | 589 pc_entry = code_map_.FindEntry(reinterpret_cast<Address>(sample.tos)); |
589 } | 590 } |
590 // If pc is in the function code before it set up stack frame or after the | 591 // If pc is in the function code before it set up stack frame or after the |
591 // frame was destroyed SafeStackFrameIterator incorrectly thinks that | 592 // frame was destroyed SafeStackFrameIterator incorrectly thinks that |
592 // ebp contains return address of the current function and skips caller's | 593 // ebp contains return address of the current function and skips caller's |
593 // frame. Check for this case and just skip such samples. | 594 // frame. Check for this case and just skip such samples. |
594 if (pc_entry) { | 595 if (pc_entry) { |
595 int pc_offset = | 596 int pc_offset = static_cast<int>(reinterpret_cast<Address>(sample.pc) - |
596 static_cast<int>(sample.pc - pc_entry->instruction_start()); | 597 pc_entry->instruction_start()); |
597 src_line = pc_entry->GetSourceLine(pc_offset); | 598 src_line = pc_entry->GetSourceLine(pc_offset); |
598 if (src_line == v8::CpuProfileNode::kNoLineNumberInfo) { | 599 if (src_line == v8::CpuProfileNode::kNoLineNumberInfo) { |
599 src_line = pc_entry->line_number(); | 600 src_line = pc_entry->line_number(); |
600 } | 601 } |
601 src_line_not_found = false; | 602 src_line_not_found = false; |
602 entries.push_back(pc_entry); | 603 entries.push_back(pc_entry); |
603 | 604 |
604 if (pc_entry->builtin_id() == Builtins::kFunctionPrototypeApply || | 605 if (pc_entry->builtin_id() == Builtins::kFunctionPrototypeApply || |
605 pc_entry->builtin_id() == Builtins::kFunctionPrototypeCall) { | 606 pc_entry->builtin_id() == Builtins::kFunctionPrototypeCall) { |
606 // When current function is either the Function.prototype.apply or the | 607 // When current function is either the Function.prototype.apply or the |
607 // Function.prototype.call builtin the top frame is either frame of | 608 // Function.prototype.call builtin the top frame is either frame of |
608 // the calling JS function or internal frame. | 609 // the calling JS function or internal frame. |
609 // In the latter case we know the caller for sure but in the | 610 // In the latter case we know the caller for sure but in the |
610 // former case we don't so we simply replace the frame with | 611 // former case we don't so we simply replace the frame with |
611 // 'unresolved' entry. | 612 // 'unresolved' entry. |
612 if (!sample.has_external_callback) { | 613 if (!sample.has_external_callback) { |
613 entries.push_back(CodeEntry::unresolved_entry()); | 614 entries.push_back(CodeEntry::unresolved_entry()); |
614 } | 615 } |
615 } | 616 } |
616 } | 617 } |
617 } | 618 } |
618 | 619 |
619 for (const Address *stack_pos = sample.stack, | 620 for (unsigned i = 0; i < sample.frames_count; ++i) { |
620 *stack_end = stack_pos + sample.frames_count; | 621 Address stack_pos = reinterpret_cast<Address>(sample.stack[i]); |
621 stack_pos != stack_end; ++stack_pos) { | 622 CodeEntry* entry = code_map_.FindEntry(stack_pos); |
622 CodeEntry* entry = code_map_.FindEntry(*stack_pos); | |
623 | 623 |
624 if (entry) { | 624 if (entry) { |
625 // Find out if the entry has an inlining stack associated. | 625 // Find out if the entry has an inlining stack associated. |
626 int pc_offset = | 626 int pc_offset = |
627 static_cast<int>(*stack_pos - entry->instruction_start()); | 627 static_cast<int>(stack_pos - entry->instruction_start()); |
628 const std::vector<CodeEntry*>* inline_stack = | 628 const std::vector<CodeEntry*>* inline_stack = |
629 entry->GetInlineStack(pc_offset); | 629 entry->GetInlineStack(pc_offset); |
630 if (inline_stack) { | 630 if (inline_stack) { |
631 entries.insert(entries.end(), inline_stack->rbegin(), | 631 entries.insert(entries.end(), inline_stack->rbegin(), |
632 inline_stack->rend()); | 632 inline_stack->rend()); |
633 } | 633 } |
634 // Skip unresolved frames (e.g. internal frame) and get source line of | 634 // Skip unresolved frames (e.g. internal frame) and get source line of |
635 // the first JS caller. | 635 // the first JS caller. |
636 if (src_line_not_found) { | 636 if (src_line_not_found) { |
637 src_line = entry->GetSourceLine(pc_offset); | 637 src_line = entry->GetSourceLine(pc_offset); |
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677 case EXTERNAL: | 677 case EXTERNAL: |
678 return CodeEntry::program_entry(); | 678 return CodeEntry::program_entry(); |
679 case IDLE: | 679 case IDLE: |
680 return CodeEntry::idle_entry(); | 680 return CodeEntry::idle_entry(); |
681 default: return NULL; | 681 default: return NULL; |
682 } | 682 } |
683 } | 683 } |
684 | 684 |
685 } // namespace internal | 685 } // namespace internal |
686 } // namespace v8 | 686 } // namespace v8 |
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