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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium 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 <stddef.h> | 5 #include <stddef.h> |
6 #include <stdint.h> | 6 #include <stdint.h> |
7 | 7 |
8 #include <cstdlib> | 8 #include <cstdlib> |
9 #include <memory> | 9 #include <memory> |
10 #include <utility> | 10 #include <utility> |
11 #include <vector> | 11 #include <vector> |
12 | 12 |
13 #include "base/bind.h" | 13 #include "base/bind.h" |
14 #include "base/compiler_specific.h" | 14 #include "base/compiler_specific.h" |
15 #include "base/macros.h" | 15 #include "base/macros.h" |
16 #include "base/memory/ptr_util.h" | 16 #include "base/memory/ptr_util.h" |
17 #include "base/message_loop/message_loop.h" | |
18 #include "base/native_library.h" | 17 #include "base/native_library.h" |
19 #include "base/path_service.h" | 18 #include "base/path_service.h" |
20 #include "base/profiler/native_stack_sampler.h" | 19 #include "base/profiler/native_stack_sampler.h" |
21 #include "base/profiler/stack_sampling_profiler.h" | 20 #include "base/profiler/stack_sampling_profiler.h" |
22 #include "base/run_loop.h" | 21 #include "base/run_loop.h" |
23 #include "base/scoped_native_library.h" | 22 #include "base/scoped_native_library.h" |
24 #include "base/strings/stringprintf.h" | 23 #include "base/strings/stringprintf.h" |
25 #include "base/strings/utf_string_conversions.h" | 24 #include "base/strings/utf_string_conversions.h" |
25 #include "base/synchronization/lock.h" | |
26 #include "base/synchronization/waitable_event.h" | 26 #include "base/synchronization/waitable_event.h" |
27 #include "base/threading/platform_thread.h" | 27 #include "base/threading/platform_thread.h" |
28 #include "base/threading/simple_thread.h" | |
28 #include "base/time/time.h" | 29 #include "base/time/time.h" |
29 #include "build/build_config.h" | 30 #include "build/build_config.h" |
30 #include "testing/gtest/include/gtest/gtest.h" | 31 #include "testing/gtest/include/gtest/gtest.h" |
31 | 32 |
32 #if defined(OS_WIN) | 33 #if defined(OS_WIN) |
33 #include <intrin.h> | 34 #include <intrin.h> |
34 #include <malloc.h> | 35 #include <malloc.h> |
35 #include <windows.h> | 36 #include <windows.h> |
36 #else | 37 #else |
37 #include <alloca.h> | 38 #include <alloca.h> |
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344 target_thread.SignalThreadToFinish(); | 345 target_thread.SignalThreadToFinish(); |
345 | 346 |
346 PlatformThread::Join(target_thread_handle); | 347 PlatformThread::Join(target_thread_handle); |
347 } | 348 } |
348 | 349 |
349 template <class Function> | 350 template <class Function> |
350 void WithTargetThread(Function function) { | 351 void WithTargetThread(Function function) { |
351 WithTargetThread(function, StackConfiguration(StackConfiguration::NORMAL)); | 352 WithTargetThread(function, StackConfiguration(StackConfiguration::NORMAL)); |
352 } | 353 } |
353 | 354 |
355 struct TestProfilerInfo { | |
356 TestProfilerInfo(PlatformThreadId thread_id, | |
357 const SamplingParams& params, | |
358 NativeStackSamplerTestDelegate* delegate = nullptr) | |
359 : completed(WaitableEvent::ResetPolicy::MANUAL, | |
360 WaitableEvent::InitialState::NOT_SIGNALED), | |
361 profiler(thread_id, | |
362 params, | |
363 Bind(&SaveProfilesAndSignalEvent, | |
364 Unretained(&profiles), | |
365 Unretained(&completed)), | |
366 delegate) {} | |
367 | |
368 void Reset() { | |
369 profiler.Stop(); | |
370 completed.Wait(); | |
371 completed.Reset(); | |
372 profiles.clear(); | |
373 } | |
374 | |
375 // The order here is important to ensure objects being referenced don't get | |
376 // destructed until after the objects referencing them. | |
377 CallStackProfiles profiles; | |
378 WaitableEvent completed; | |
379 StackSamplingProfiler profiler; | |
380 | |
381 private: | |
382 DISALLOW_COPY_AND_ASSIGN(TestProfilerInfo); | |
383 }; | |
384 | |
385 // Creates multiple profilers based on a vector of parameters. | |
386 std::vector<std::unique_ptr<TestProfilerInfo>> CreateProfilers( | |
387 PlatformThreadId target_thread_id, | |
388 const std::vector<SamplingParams>& params) { | |
389 DCHECK(!params.empty()); | |
390 | |
391 std::vector<std::unique_ptr<TestProfilerInfo>> profilers; | |
392 for (size_t i = 0; i < params.size(); ++i) { | |
393 profilers.push_back( | |
394 MakeUnique<TestProfilerInfo>(target_thread_id, params[i])); | |
395 } | |
396 | |
397 return profilers; | |
398 } | |
399 | |
354 // Captures profiles as specified by |params| on the TargetThread, and returns | 400 // Captures profiles as specified by |params| on the TargetThread, and returns |
355 // them in |profiles|. Waits up to |profiler_wait_time| for the profiler to | 401 // them in |profiles|. Waits up to |profiler_wait_time| for the profiler to |
356 // complete. | 402 // complete. |
357 void CaptureProfiles(const SamplingParams& params, TimeDelta profiler_wait_time, | 403 void CaptureProfiles(const SamplingParams& params, TimeDelta profiler_wait_time, |
358 CallStackProfiles* profiles) { | 404 CallStackProfiles* profiles) { |
359 profiles->clear(); | |
360 | |
361 WithTargetThread([¶ms, profiles, | 405 WithTargetThread([¶ms, profiles, |
362 profiler_wait_time](PlatformThreadId target_thread_id) { | 406 profiler_wait_time](PlatformThreadId target_thread_id) { |
363 WaitableEvent sampling_thread_completed( | 407 TestProfilerInfo info(target_thread_id, params); |
364 WaitableEvent::ResetPolicy::MANUAL, | 408 info.profiler.Start(); |
365 WaitableEvent::InitialState::NOT_SIGNALED); | 409 info.completed.TimedWait(profiler_wait_time); |
366 const StackSamplingProfiler::CompletedCallback callback = | 410 info.profiler.Stop(); |
367 Bind(&SaveProfilesAndSignalEvent, Unretained(profiles), | 411 info.completed.Wait(); |
368 Unretained(&sampling_thread_completed)); | 412 |
369 StackSamplingProfiler profiler(target_thread_id, params, callback); | 413 *profiles = std::move(info.profiles); |
370 profiler.Start(); | |
371 sampling_thread_completed.TimedWait(profiler_wait_time); | |
372 profiler.Stop(); | |
373 sampling_thread_completed.Wait(); | |
374 }); | 414 }); |
375 } | 415 } |
376 | 416 |
417 // Waits for one of multiple samplings to complete. | |
418 size_t WaitForSamplingComplete( | |
419 const std::vector<std::unique_ptr<TestProfilerInfo>>& infos) { | |
420 // Map unique_ptrs to something that WaitMany can accept. | |
421 std::vector<WaitableEvent*> sampling_completed_rawptrs(infos.size()); | |
422 std::transform(infos.begin(), infos.end(), sampling_completed_rawptrs.begin(), | |
423 [](const std::unique_ptr<TestProfilerInfo>& info) { | |
424 return &info.get()->completed; | |
425 }); | |
426 // Wait for one profiler to finish. | |
427 return WaitableEvent::WaitMany(sampling_completed_rawptrs.data(), | |
428 sampling_completed_rawptrs.size()); | |
429 } | |
430 | |
377 // If this executable was linked with /INCREMENTAL (the default for non-official | 431 // If this executable was linked with /INCREMENTAL (the default for non-official |
378 // debug and release builds on Windows), function addresses do not correspond to | 432 // debug and release builds on Windows), function addresses do not correspond to |
379 // function code itself, but instead to instructions in the Incremental Link | 433 // function code itself, but instead to instructions in the Incremental Link |
380 // Table that jump to the functions. Checks for a jump instruction and if | 434 // Table that jump to the functions. Checks for a jump instruction and if |
381 // present does a little decompilation to find the function's actual starting | 435 // present does a little decompilation to find the function's actual starting |
382 // address. | 436 // address. |
383 const void* MaybeFixupFunctionAddressForILT(const void* function_address) { | 437 const void* MaybeFixupFunctionAddressForILT(const void* function_address) { |
384 #if defined(_WIN64) | 438 #if defined(_WIN64) |
385 const unsigned char* opcode = | 439 const unsigned char* opcode = |
386 reinterpret_cast<const unsigned char*>(function_address); | 440 reinterpret_cast<const unsigned char*>(function_address); |
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437 // asynchronous library loading has completed before walking the stack. If | 491 // asynchronous library loading has completed before walking the stack. If |
438 // false, the unloading may still be occurring during the stack walk. | 492 // false, the unloading may still be occurring during the stack walk. |
439 void TestLibraryUnload(bool wait_until_unloaded) { | 493 void TestLibraryUnload(bool wait_until_unloaded) { |
440 // Test delegate that supports intervening between the copying of the stack | 494 // Test delegate that supports intervening between the copying of the stack |
441 // and the walking of the stack. | 495 // and the walking of the stack. |
442 class StackCopiedSignaler : public NativeStackSamplerTestDelegate { | 496 class StackCopiedSignaler : public NativeStackSamplerTestDelegate { |
443 public: | 497 public: |
444 StackCopiedSignaler(WaitableEvent* stack_copied, | 498 StackCopiedSignaler(WaitableEvent* stack_copied, |
445 WaitableEvent* start_stack_walk, | 499 WaitableEvent* start_stack_walk, |
446 bool wait_to_walk_stack) | 500 bool wait_to_walk_stack) |
447 : stack_copied_(stack_copied), start_stack_walk_(start_stack_walk), | 501 : stack_copied_(stack_copied), |
448 wait_to_walk_stack_(wait_to_walk_stack) { | 502 start_stack_walk_(start_stack_walk), |
449 } | 503 wait_to_walk_stack_(wait_to_walk_stack) {} |
450 | 504 |
451 void OnPreStackWalk() override { | 505 void OnPreStackWalk() override { |
452 stack_copied_->Signal(); | 506 stack_copied_->Signal(); |
453 if (wait_to_walk_stack_) | 507 if (wait_to_walk_stack_) |
454 start_stack_walk_->Wait(); | 508 start_stack_walk_->Wait(); |
455 } | 509 } |
456 | 510 |
457 private: | 511 private: |
458 WaitableEvent* const stack_copied_; | 512 WaitableEvent* const stack_copied_; |
459 WaitableEvent* const start_stack_walk_; | 513 WaitableEvent* const start_stack_walk_; |
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570 // TargetThread::SignalAndWaitUntilSignaled | 624 // TargetThread::SignalAndWaitUntilSignaled |
571 // TargetThread::OtherLibraryCallback | 625 // TargetThread::OtherLibraryCallback |
572 // InvokeCallbackFunction (in other library) | 626 // InvokeCallbackFunction (in other library) |
573 // TargetThread::CallThroughOtherLibrary | 627 // TargetThread::CallThroughOtherLibrary |
574 EXPECT_EQ(3, other_library_frame - end_frame) | 628 EXPECT_EQ(3, other_library_frame - end_frame) |
575 << "Stack:\n" | 629 << "Stack:\n" |
576 << FormatSampleForDiagnosticOutput(sample, profile.modules); | 630 << FormatSampleForDiagnosticOutput(sample, profile.modules); |
577 } | 631 } |
578 } | 632 } |
579 | 633 |
634 // Provide a suitable (and clean) environment for the tests below. All tests | |
635 // must use this class to ensure that proper clean-up is done and thus be | |
636 // usable in a later test. | |
637 class StackSamplingProfilerTest : public testing::Test { | |
638 public: | |
639 void SetUp() override { | |
640 // The idle-shutdown time is too long for convenient (and accurate) testing. | |
641 // That behavior is checked instead by artificially triggering it through | |
642 // the TestAPI. | |
643 StackSamplingProfiler::TestAPI::DisableIdleShutdown(); | |
644 } | |
645 | |
646 void TearDown() override { | |
647 // Be a good citizen and clean up after ourselves. This also re-enables the | |
648 // idle-shutdown behavior. | |
649 StackSamplingProfiler::TestAPI::Reset(); | |
650 } | |
651 }; | |
652 | |
580 } // namespace | 653 } // namespace |
581 | 654 |
582 // Checks that the basic expected information is present in a sampled call stack | 655 // Checks that the basic expected information is present in a sampled call stack |
583 // profile. | 656 // profile. |
584 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 657 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
585 #define MAYBE_Basic Basic | 658 #define MAYBE_Basic Basic |
586 #else | 659 #else |
587 #define MAYBE_Basic DISABLED_Basic | 660 #define MAYBE_Basic DISABLED_Basic |
588 #endif | 661 #endif |
589 TEST(StackSamplingProfilerTest, MAYBE_Basic) { | 662 TEST_F(StackSamplingProfilerTest, MAYBE_Basic) { |
590 StackSamplingProfiler::ResetAnnotationsForTesting(); | |
591 | |
592 SamplingParams params; | 663 SamplingParams params; |
593 params.sampling_interval = TimeDelta::FromMilliseconds(0); | 664 params.sampling_interval = TimeDelta::FromMilliseconds(0); |
594 params.samples_per_burst = 1; | 665 params.samples_per_burst = 1; |
595 | 666 |
596 std::vector<CallStackProfile> profiles; | 667 std::vector<CallStackProfile> profiles; |
597 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles); | 668 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles); |
598 | 669 |
599 // Check that the profile and samples sizes are correct, and the module | 670 // Check that the profile and samples sizes are correct, and the module |
600 // indices are in range. | 671 // indices are in range. |
601 ASSERT_EQ(1u, profiles.size()); | 672 ASSERT_EQ(1u, profiles.size()); |
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624 EXPECT_TRUE(PathService::Get(FILE_EXE, &executable_path)); | 695 EXPECT_TRUE(PathService::Get(FILE_EXE, &executable_path)); |
625 EXPECT_EQ(executable_path, profile.modules[loc->module_index].filename); | 696 EXPECT_EQ(executable_path, profile.modules[loc->module_index].filename); |
626 } | 697 } |
627 | 698 |
628 // Checks that annotations are recorded in samples. | 699 // Checks that annotations are recorded in samples. |
629 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 700 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
630 #define MAYBE_Annotations Annotations | 701 #define MAYBE_Annotations Annotations |
631 #else | 702 #else |
632 #define MAYBE_Annotations DISABLED_Annotations | 703 #define MAYBE_Annotations DISABLED_Annotations |
633 #endif | 704 #endif |
634 TEST(StackSamplingProfilerTest, MAYBE_Annotations) { | 705 TEST_F(StackSamplingProfilerTest, MAYBE_Annotations) { |
635 StackSamplingProfiler::ResetAnnotationsForTesting(); | |
636 | |
637 SamplingParams params; | 706 SamplingParams params; |
638 params.sampling_interval = TimeDelta::FromMilliseconds(0); | 707 params.sampling_interval = TimeDelta::FromMilliseconds(0); |
639 params.samples_per_burst = 1; | 708 params.samples_per_burst = 1; |
640 | 709 |
641 // Check that a run picks up annotations. | 710 // Check that a run picks up annotations. |
642 StackSamplingProfiler::SetProcessMilestone(1); | 711 StackSamplingProfiler::SetProcessMilestone(1); |
643 std::vector<CallStackProfile> profiles1; | 712 std::vector<CallStackProfile> profiles1; |
644 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles1); | 713 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles1); |
645 ASSERT_EQ(1u, profiles1.size()); | 714 ASSERT_EQ(1u, profiles1.size()); |
646 const CallStackProfile& profile1 = profiles1[0]; | 715 const CallStackProfile& profile1 = profiles1[0]; |
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660 EXPECT_EQ(sample1.process_milestones | (1u << 2), sample2.process_milestones); | 729 EXPECT_EQ(sample1.process_milestones | (1u << 2), sample2.process_milestones); |
661 } | 730 } |
662 | 731 |
663 // Checks that the profiler handles stacks containing dynamically-allocated | 732 // Checks that the profiler handles stacks containing dynamically-allocated |
664 // stack memory. | 733 // stack memory. |
665 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 734 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
666 #define MAYBE_Alloca Alloca | 735 #define MAYBE_Alloca Alloca |
667 #else | 736 #else |
668 #define MAYBE_Alloca DISABLED_Alloca | 737 #define MAYBE_Alloca DISABLED_Alloca |
669 #endif | 738 #endif |
670 TEST(StackSamplingProfilerTest, MAYBE_Alloca) { | 739 TEST_F(StackSamplingProfilerTest, MAYBE_Alloca) { |
671 SamplingParams params; | 740 SamplingParams params; |
672 params.sampling_interval = TimeDelta::FromMilliseconds(0); | 741 params.sampling_interval = TimeDelta::FromMilliseconds(0); |
673 params.samples_per_burst = 1; | 742 params.samples_per_burst = 1; |
674 | 743 |
675 std::vector<CallStackProfile> profiles; | 744 std::vector<CallStackProfile> profiles; |
676 WithTargetThread( | 745 WithTargetThread( |
677 [¶ms, &profiles](PlatformThreadId target_thread_id) { | 746 [¶ms, &profiles](PlatformThreadId target_thread_id) { |
678 WaitableEvent sampling_thread_completed( | 747 WaitableEvent sampling_thread_completed( |
679 WaitableEvent::ResetPolicy::MANUAL, | 748 WaitableEvent::ResetPolicy::MANUAL, |
680 WaitableEvent::InitialState::NOT_SIGNALED); | 749 WaitableEvent::InitialState::NOT_SIGNALED); |
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713 reinterpret_cast<const void*>(&TargetThread::CallWithAlloca)) | 782 reinterpret_cast<const void*>(&TargetThread::CallWithAlloca)) |
714 << " was not found in stack:\n" | 783 << " was not found in stack:\n" |
715 << FormatSampleForDiagnosticOutput(sample, profile.modules); | 784 << FormatSampleForDiagnosticOutput(sample, profile.modules); |
716 | 785 |
717 // These frames should be adjacent on the stack. | 786 // These frames should be adjacent on the stack. |
718 EXPECT_EQ(1, alloca_frame - end_frame) | 787 EXPECT_EQ(1, alloca_frame - end_frame) |
719 << "Stack:\n" | 788 << "Stack:\n" |
720 << FormatSampleForDiagnosticOutput(sample, profile.modules); | 789 << FormatSampleForDiagnosticOutput(sample, profile.modules); |
721 } | 790 } |
722 | 791 |
723 // Checks that the fire-and-forget interface works. | |
724 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
725 #define MAYBE_StartAndRunAsync StartAndRunAsync | |
726 #else | |
727 #define MAYBE_StartAndRunAsync DISABLED_StartAndRunAsync | |
728 #endif | |
729 TEST(StackSamplingProfilerTest, MAYBE_StartAndRunAsync) { | |
730 // StartAndRunAsync requires the caller to have a message loop. | |
731 MessageLoop message_loop; | |
732 | |
733 SamplingParams params; | |
734 params.samples_per_burst = 1; | |
735 | |
736 CallStackProfiles profiles; | |
737 WithTargetThread([¶ms, &profiles](PlatformThreadId target_thread_id) { | |
738 WaitableEvent sampling_thread_completed( | |
739 WaitableEvent::ResetPolicy::AUTOMATIC, | |
740 WaitableEvent::InitialState::NOT_SIGNALED); | |
741 const StackSamplingProfiler::CompletedCallback callback = | |
742 Bind(&SaveProfilesAndSignalEvent, Unretained(&profiles), | |
743 Unretained(&sampling_thread_completed)); | |
744 StackSamplingProfiler::StartAndRunAsync(target_thread_id, params, callback); | |
745 RunLoop().RunUntilIdle(); | |
746 sampling_thread_completed.Wait(); | |
747 }); | |
748 | |
749 ASSERT_EQ(1u, profiles.size()); | |
750 } | |
751 | |
752 // Checks that the expected number of profiles and samples are present in the | 792 // Checks that the expected number of profiles and samples are present in the |
753 // call stack profiles produced. | 793 // call stack profiles produced. |
754 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 794 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
755 #define MAYBE_MultipleProfilesAndSamples MultipleProfilesAndSamples | 795 #define MAYBE_MultipleProfilesAndSamples MultipleProfilesAndSamples |
756 #else | 796 #else |
757 #define MAYBE_MultipleProfilesAndSamples DISABLED_MultipleProfilesAndSamples | 797 #define MAYBE_MultipleProfilesAndSamples DISABLED_MultipleProfilesAndSamples |
758 #endif | 798 #endif |
759 TEST(StackSamplingProfilerTest, MAYBE_MultipleProfilesAndSamples) { | 799 TEST_F(StackSamplingProfilerTest, MAYBE_MultipleProfilesAndSamples) { |
760 SamplingParams params; | 800 SamplingParams params; |
761 params.burst_interval = params.sampling_interval = | 801 params.burst_interval = params.sampling_interval = |
762 TimeDelta::FromMilliseconds(0); | 802 TimeDelta::FromMilliseconds(0); |
763 params.bursts = 2; | 803 params.bursts = 2; |
764 params.samples_per_burst = 3; | 804 params.samples_per_burst = 3; |
765 | 805 |
766 std::vector<CallStackProfile> profiles; | 806 std::vector<CallStackProfile> profiles; |
767 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles); | 807 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles); |
768 | 808 |
769 ASSERT_EQ(2u, profiles.size()); | 809 ASSERT_EQ(2u, profiles.size()); |
770 EXPECT_EQ(3u, profiles[0].samples.size()); | 810 EXPECT_EQ(3u, profiles[0].samples.size()); |
771 EXPECT_EQ(3u, profiles[1].samples.size()); | 811 EXPECT_EQ(3u, profiles[1].samples.size()); |
772 } | 812 } |
773 | 813 |
814 // Checks that a profiler can stop/destruct without ever having started. | |
815 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
816 #define MAYBE_StopWithoutStarting StopWithoutStarting | |
817 #else | |
818 #define MAYBE_StopWithoutStarting DISABLED_StopWithoutStarting | |
819 #endif | |
820 TEST_F(StackSamplingProfilerTest, MAYBE_StopWithoutStarting) { | |
821 WithTargetThread([](PlatformThreadId target_thread_id) { | |
822 SamplingParams params; | |
823 params.sampling_interval = TimeDelta::FromMilliseconds(0); | |
824 params.samples_per_burst = 1; | |
825 | |
826 CallStackProfiles profiles; | |
827 WaitableEvent sampling_completed(WaitableEvent::ResetPolicy::MANUAL, | |
828 WaitableEvent::InitialState::NOT_SIGNALED); | |
829 const StackSamplingProfiler::CompletedCallback callback = | |
830 Bind(&SaveProfilesAndSignalEvent, Unretained(&profiles), | |
831 Unretained(&sampling_completed)); | |
832 StackSamplingProfiler profiler(target_thread_id, params, callback); | |
833 | |
834 profiler.Stop(); // Constructed but never started. | |
835 EXPECT_FALSE(sampling_completed.IsSignaled()); | |
836 }); | |
837 } | |
838 | |
839 // Checks that its okay to stop a profiler before it finishes even when the | |
840 // sampling thread continues to run. | |
841 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
842 #define MAYBE_StopSafely StopSafely | |
843 #else | |
844 #define MAYBE_StopSafely DISABLED_StopSafely | |
845 #endif | |
846 TEST_F(StackSamplingProfilerTest, MAYBE_StopSafely) { | |
847 // Test delegate that counts samples. | |
848 class SampleRecordedCounter : public NativeStackSamplerTestDelegate { | |
849 public: | |
850 SampleRecordedCounter() {} | |
851 | |
852 void OnPreStackWalk() override { | |
853 AutoLock lock(lock_); | |
854 ++count_; | |
855 } | |
856 | |
857 size_t Get() { | |
858 AutoLock lock(lock_); | |
859 return count_; | |
860 } | |
861 | |
862 private: | |
863 Lock lock_; | |
864 size_t count_ = 0; | |
865 }; | |
866 | |
867 WithTargetThread([](PlatformThreadId target_thread_id) { | |
868 SamplingParams params[2]; | |
869 | |
870 // Providing an initial delay makes it more likely that both will be | |
871 // scheduled before either starts to run. Once started, samples will | |
872 // run ordered by their scheduled, interleaved times regardless of | |
873 // whatever interval the thread wakes up. | |
874 params[0].initial_delay = TimeDelta::FromMilliseconds(10); | |
875 params[0].sampling_interval = TimeDelta::FromMilliseconds(1); | |
876 params[0].samples_per_burst = 100000; | |
877 | |
878 params[1].initial_delay = TimeDelta::FromMilliseconds(10); | |
879 params[1].sampling_interval = TimeDelta::FromMilliseconds(1); | |
880 params[1].samples_per_burst = 100000; | |
881 | |
882 SampleRecordedCounter samples_recorded[2]; | |
Mike Wittman
2017/04/04 17:59:52
nit: arraysize(params)
bcwhite
2017/04/06 16:18:50
Done.
| |
883 | |
884 TestProfilerInfo profiler_info0(target_thread_id, params[0], | |
885 &samples_recorded[0]); | |
886 TestProfilerInfo profiler_info1(target_thread_id, params[1], | |
887 &samples_recorded[1]); | |
888 | |
889 profiler_info0.profiler.Start(); | |
890 profiler_info1.profiler.Start(); | |
891 | |
892 // Wait for both to start accumulating samples. Using a WaitableEvent is | |
893 // possible but gets complicated later on because there's no way of knowing | |
894 // if 0 or 1 additional sample will be taken after Stop() and thus no way | |
895 // of knowing how many Wait() calls to make on it. | |
896 while (samples_recorded[0].Get() == 0 || samples_recorded[1].Get() == 0) | |
897 PlatformThread::Sleep(TimeDelta::FromMilliseconds(1)); | |
898 | |
899 // Ensure that the first sampler can be safely stopped while the second | |
900 // continues to run. The stopped first profiler will still have a | |
901 // PerformCollectionTask pending that will do nothing when executed because | |
902 // the collection will have been removed by Stop(). | |
903 profiler_info0.profiler.Stop(); | |
904 profiler_info0.completed.Wait(); | |
905 size_t count0 = samples_recorded[0].Get(); | |
906 size_t count1 = samples_recorded[1].Get(); | |
907 | |
908 // Waiting for the second sampler to collect a couple samples ensures that | |
909 // the pending PerformCollectionTask for the first has executed because | |
910 // tasks are always ordered by their next scheduled time. | |
911 while (samples_recorded[1].Get() < count1 + 2) | |
912 PlatformThread::Sleep(TimeDelta::FromMilliseconds(1)); | |
913 | |
914 // Ensure that the first profiler didn't do anything since it was stopped. | |
915 EXPECT_EQ(count0, samples_recorded[0].Get()); | |
916 }); | |
917 } | |
918 | |
774 // Checks that no call stack profiles are captured if the profiling is stopped | 919 // Checks that no call stack profiles are captured if the profiling is stopped |
775 // during the initial delay. | 920 // during the initial delay. |
776 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 921 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
777 #define MAYBE_StopDuringInitialDelay StopDuringInitialDelay | 922 #define MAYBE_StopDuringInitialDelay StopDuringInitialDelay |
778 #else | 923 #else |
779 #define MAYBE_StopDuringInitialDelay DISABLED_StopDuringInitialDelay | 924 #define MAYBE_StopDuringInitialDelay DISABLED_StopDuringInitialDelay |
780 #endif | 925 #endif |
781 TEST(StackSamplingProfilerTest, MAYBE_StopDuringInitialDelay) { | 926 TEST_F(StackSamplingProfilerTest, MAYBE_StopDuringInitialDelay) { |
782 SamplingParams params; | 927 SamplingParams params; |
783 params.initial_delay = TimeDelta::FromSeconds(60); | 928 params.initial_delay = TimeDelta::FromSeconds(60); |
784 | 929 |
785 std::vector<CallStackProfile> profiles; | 930 std::vector<CallStackProfile> profiles; |
786 CaptureProfiles(params, TimeDelta::FromMilliseconds(0), &profiles); | 931 CaptureProfiles(params, TimeDelta::FromMilliseconds(0), &profiles); |
787 | 932 |
788 EXPECT_TRUE(profiles.empty()); | 933 EXPECT_TRUE(profiles.empty()); |
789 } | 934 } |
790 | 935 |
791 // Checks that the single completed call stack profile is captured if the | 936 // Checks that the single completed call stack profile is captured if the |
792 // profiling is stopped between bursts. | 937 // profiling is stopped between bursts. |
793 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 938 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
794 #define MAYBE_StopDuringInterBurstInterval StopDuringInterBurstInterval | 939 #define MAYBE_StopDuringInterBurstInterval StopDuringInterBurstInterval |
795 #else | 940 #else |
796 #define MAYBE_StopDuringInterBurstInterval DISABLED_StopDuringInterBurstInterval | 941 #define MAYBE_StopDuringInterBurstInterval DISABLED_StopDuringInterBurstInterval |
797 #endif | 942 #endif |
798 TEST(StackSamplingProfilerTest, MAYBE_StopDuringInterBurstInterval) { | 943 TEST_F(StackSamplingProfilerTest, MAYBE_StopDuringInterBurstInterval) { |
799 SamplingParams params; | 944 SamplingParams params; |
800 params.sampling_interval = TimeDelta::FromMilliseconds(0); | 945 params.sampling_interval = TimeDelta::FromMilliseconds(0); |
801 params.burst_interval = TimeDelta::FromSeconds(60); | 946 params.burst_interval = TimeDelta::FromSeconds(60); |
802 params.bursts = 2; | 947 params.bursts = 2; |
803 params.samples_per_burst = 1; | 948 params.samples_per_burst = 1; |
804 | 949 |
805 std::vector<CallStackProfile> profiles; | 950 std::vector<CallStackProfile> profiles; |
806 CaptureProfiles(params, TimeDelta::FromMilliseconds(50), &profiles); | 951 CaptureProfiles(params, TimeDelta::FromMilliseconds(50), &profiles); |
807 | 952 |
808 ASSERT_EQ(1u, profiles.size()); | 953 ASSERT_EQ(1u, profiles.size()); |
809 EXPECT_EQ(1u, profiles[0].samples.size()); | 954 EXPECT_EQ(1u, profiles[0].samples.size()); |
810 } | 955 } |
811 | 956 |
812 // Checks that incomplete call stack profiles are captured. | 957 // Checks that tasks can be stopped before completion and incomplete call stack |
958 // profiles are captured. | |
813 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 959 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
814 #define MAYBE_StopDuringInterSampleInterval StopDuringInterSampleInterval | 960 #define MAYBE_StopDuringInterSampleInterval StopDuringInterSampleInterval |
815 #else | 961 #else |
816 #define MAYBE_StopDuringInterSampleInterval \ | 962 #define MAYBE_StopDuringInterSampleInterval \ |
817 DISABLED_StopDuringInterSampleInterval | 963 DISABLED_StopDuringInterSampleInterval |
818 #endif | 964 #endif |
819 TEST(StackSamplingProfilerTest, MAYBE_StopDuringInterSampleInterval) { | 965 TEST_F(StackSamplingProfilerTest, MAYBE_StopDuringInterSampleInterval) { |
820 SamplingParams params; | 966 // Test delegate that counts samples. |
821 params.sampling_interval = TimeDelta::FromSeconds(60); | 967 class SampleRecordedEvent : public NativeStackSamplerTestDelegate { |
822 params.samples_per_burst = 2; | 968 public: |
969 SampleRecordedEvent() | |
970 : sample_recorded_(WaitableEvent::ResetPolicy::MANUAL, | |
971 WaitableEvent::InitialState::NOT_SIGNALED) {} | |
823 | 972 |
824 std::vector<CallStackProfile> profiles; | 973 void OnPreStackWalk() override { sample_recorded_.Signal(); } |
825 CaptureProfiles(params, TimeDelta::FromMilliseconds(50), &profiles); | |
826 | 974 |
827 ASSERT_EQ(1u, profiles.size()); | 975 void WaitForSample() { sample_recorded_.Wait(); } |
828 EXPECT_EQ(1u, profiles[0].samples.size()); | 976 |
977 private: | |
978 WaitableEvent sample_recorded_; | |
979 }; | |
980 | |
981 WithTargetThread([](PlatformThreadId target_thread_id) { | |
982 SamplingParams params; | |
983 | |
984 params.sampling_interval = AVeryLongTimeDelta(); | |
985 params.samples_per_burst = 2; | |
986 | |
987 SampleRecordedEvent samples_recorded; | |
988 TestProfilerInfo profiler_info(target_thread_id, params, &samples_recorded); | |
989 | |
990 profiler_info.profiler.Start(); | |
991 | |
992 // Wait for profiler to start accumulating samples. | |
993 samples_recorded.WaitForSample(); | |
994 | |
995 // Ensure that it can stop safely. | |
996 profiler_info.profiler.Stop(); | |
997 profiler_info.completed.Wait(); | |
998 | |
999 ASSERT_EQ(1u, profiler_info.profiles.size()); | |
1000 EXPECT_EQ(1u, profiler_info.profiles[0].samples.size()); | |
1001 }); | |
829 } | 1002 } |
830 | 1003 |
831 // Checks that we can destroy the profiler while profiling. | 1004 // Checks that we can destroy the profiler while profiling. |
832 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 1005 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
833 #define MAYBE_DestroyProfilerWhileProfiling DestroyProfilerWhileProfiling | 1006 #define MAYBE_DestroyProfilerWhileProfiling DestroyProfilerWhileProfiling |
834 #else | 1007 #else |
835 #define MAYBE_DestroyProfilerWhileProfiling \ | 1008 #define MAYBE_DestroyProfilerWhileProfiling \ |
836 DISABLED_DestroyProfilerWhileProfiling | 1009 DISABLED_DestroyProfilerWhileProfiling |
837 #endif | 1010 #endif |
838 TEST(StackSamplingProfilerTest, MAYBE_DestroyProfilerWhileProfiling) { | 1011 TEST_F(StackSamplingProfilerTest, MAYBE_DestroyProfilerWhileProfiling) { |
839 SamplingParams params; | 1012 SamplingParams params; |
840 params.sampling_interval = TimeDelta::FromMilliseconds(10); | 1013 params.sampling_interval = TimeDelta::FromMilliseconds(10); |
841 | 1014 |
842 CallStackProfiles profiles; | 1015 CallStackProfiles profiles; |
843 WithTargetThread([¶ms, &profiles](PlatformThreadId target_thread_id) { | 1016 WithTargetThread([¶ms, &profiles](PlatformThreadId target_thread_id) { |
844 std::unique_ptr<StackSamplingProfiler> profiler; | 1017 std::unique_ptr<StackSamplingProfiler> profiler; |
845 profiler.reset(new StackSamplingProfiler( | 1018 profiler.reset(new StackSamplingProfiler( |
846 target_thread_id, params, Bind(&SaveProfiles, Unretained(&profiles)))); | 1019 target_thread_id, params, Bind(&SaveProfiles, Unretained(&profiles)))); |
847 profiler->Start(); | 1020 profiler->Start(); |
848 profiler.reset(); | 1021 profiler.reset(); |
849 | 1022 |
850 // Wait longer than a sample interval to catch any use-after-free actions by | 1023 // Wait longer than a sample interval to catch any use-after-free actions by |
851 // the profiler thread. | 1024 // the profiler thread. |
852 PlatformThread::Sleep(TimeDelta::FromMilliseconds(50)); | 1025 PlatformThread::Sleep(TimeDelta::FromMilliseconds(50)); |
853 }); | 1026 }); |
854 } | 1027 } |
855 | 1028 |
856 // Checks that the same profiler may be run multiple times. | 1029 // Checks that the same profiler may be run multiple times. |
857 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 1030 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
858 #define MAYBE_CanRunMultipleTimes CanRunMultipleTimes | 1031 #define MAYBE_CanRunMultipleTimes CanRunMultipleTimes |
859 #else | 1032 #else |
860 #define MAYBE_CanRunMultipleTimes DISABLED_CanRunMultipleTimes | 1033 #define MAYBE_CanRunMultipleTimes DISABLED_CanRunMultipleTimes |
861 #endif | 1034 #endif |
862 TEST(StackSamplingProfilerTest, MAYBE_CanRunMultipleTimes) { | 1035 TEST_F(StackSamplingProfilerTest, MAYBE_CanRunMultipleTimes) { |
1036 WithTargetThread([](PlatformThreadId target_thread_id) { | |
1037 SamplingParams params; | |
1038 params.sampling_interval = TimeDelta::FromMilliseconds(0); | |
1039 params.samples_per_burst = 1; | |
1040 | |
1041 CallStackProfiles profiles; | |
1042 WaitableEvent sampling_completed(WaitableEvent::ResetPolicy::MANUAL, | |
1043 WaitableEvent::InitialState::NOT_SIGNALED); | |
1044 const StackSamplingProfiler::CompletedCallback callback = | |
1045 Bind(&SaveProfilesAndSignalEvent, Unretained(&profiles), | |
1046 Unretained(&sampling_completed)); | |
1047 StackSamplingProfiler profiler(target_thread_id, params, callback); | |
1048 | |
1049 // Just start and stop to execute code paths. | |
1050 profiler.Start(); | |
1051 profiler.Stop(); | |
1052 sampling_completed.Wait(); | |
1053 | |
1054 // Ensure a second request will run and not block. | |
1055 sampling_completed.Reset(); | |
1056 profiles.clear(); | |
1057 profiler.Start(); | |
1058 sampling_completed.Wait(); | |
1059 profiler.Stop(); | |
1060 ASSERT_EQ(1u, profiles.size()); | |
1061 }); | |
1062 } | |
1063 | |
1064 // Checks that the different profilers may be run. | |
1065 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
1066 #define MAYBE_CanRunMultipleProfilers CanRunMultipleProfilers | |
1067 #else | |
1068 #define MAYBE_CanRunMultipleProfilers DISABLED_CanRunMultipleProfilers | |
1069 #endif | |
1070 TEST_F(StackSamplingProfilerTest, MAYBE_CanRunMultipleProfilers) { | |
863 SamplingParams params; | 1071 SamplingParams params; |
864 params.sampling_interval = TimeDelta::FromMilliseconds(0); | 1072 params.sampling_interval = TimeDelta::FromMilliseconds(0); |
865 params.samples_per_burst = 1; | 1073 params.samples_per_burst = 1; |
866 | 1074 |
867 std::vector<CallStackProfile> profiles; | 1075 std::vector<CallStackProfile> profiles; |
868 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles); | 1076 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles); |
869 ASSERT_EQ(1u, profiles.size()); | 1077 ASSERT_EQ(1u, profiles.size()); |
870 | 1078 |
871 profiles.clear(); | 1079 profiles.clear(); |
872 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles); | 1080 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles); |
873 ASSERT_EQ(1u, profiles.size()); | 1081 ASSERT_EQ(1u, profiles.size()); |
874 } | 1082 } |
875 | 1083 |
876 // Checks that requests to start profiling while another profile is taking place | 1084 // Checks that a sampler can be started while another is running. |
877 // are ignored. | 1085 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
878 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 1086 #define MAYBE_MultipleStart MultipleStart |
879 #define MAYBE_ConcurrentProfiling ConcurrentProfiling | 1087 #else |
880 #else | 1088 #define MAYBE_MultipleStart DISABLED_MultipleStart |
881 #define MAYBE_ConcurrentProfiling DISABLED_ConcurrentProfiling | 1089 #endif |
882 #endif | 1090 TEST_F(StackSamplingProfilerTest, MAYBE_MultipleStart) { |
883 TEST(StackSamplingProfilerTest, MAYBE_ConcurrentProfiling) { | 1091 WithTargetThread([](PlatformThreadId target_thread_id) { |
884 WithTargetThread([](PlatformThreadId target_thread_id) { | 1092 std::vector<SamplingParams> params(2); |
885 SamplingParams params[2]; | 1093 |
1094 params[0].initial_delay = AVeryLongTimeDelta(); | |
1095 params[0].samples_per_burst = 1; | |
1096 | |
1097 params[1].sampling_interval = TimeDelta::FromMilliseconds(1); | |
1098 params[1].samples_per_burst = 1; | |
1099 | |
1100 std::vector<std::unique_ptr<TestProfilerInfo>> profiler_infos = | |
1101 CreateProfilers(target_thread_id, params); | |
1102 | |
1103 profiler_infos[0]->profiler.Start(); | |
1104 profiler_infos[1]->profiler.Start(); | |
1105 profiler_infos[1]->completed.Wait(); | |
1106 EXPECT_EQ(1u, profiler_infos[1]->profiles.size()); | |
1107 }); | |
1108 } | |
1109 | |
1110 // Checks that the sampling thread can shut down. | |
1111 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
1112 #define MAYBE_SamplerIdleShutdown SamplerIdleShutdown | |
1113 #else | |
1114 #define MAYBE_SamplerIdleShutdown DISABLED_SamplerIdleShutdown | |
1115 #endif | |
1116 TEST_F(StackSamplingProfilerTest, MAYBE_SamplerIdleShutdown) { | |
1117 SamplingParams params; | |
1118 params.sampling_interval = TimeDelta::FromMilliseconds(0); | |
1119 params.samples_per_burst = 1; | |
1120 | |
1121 std::vector<CallStackProfile> profiles; | |
1122 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles); | |
1123 ASSERT_EQ(1u, profiles.size()); | |
1124 | |
1125 // Capture thread should still be running at this point. | |
1126 ASSERT_TRUE(StackSamplingProfiler::TestAPI::IsSamplingThreadRunning()); | |
1127 | |
1128 // Initiate an "idle" shutdown and ensure it happens. Idle-shutdown was | |
1129 // disabled by the test fixture so the test will fail due to a timeout if | |
1130 // it does not exit. | |
1131 StackSamplingProfiler::TestAPI::PerformSamplingThreadIdleShutdown(false); | |
1132 | |
1133 // While the shutdown has been initiated, the actual exit of the thread still | |
1134 // happens asynchronously. Watch until the thread actually exits. This test | |
1135 // will time-out in the case of failure. | |
1136 while (StackSamplingProfiler::TestAPI::IsSamplingThreadRunning()) | |
1137 PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(1)); | |
1138 } | |
1139 | |
1140 // Checks that additional requests will restart a stopped profiler. | |
1141 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
1142 #define MAYBE_WillRestartSamplerAfterIdleShutdown \ | |
1143 WillRestartSamplerAfterIdleShutdown | |
1144 #else | |
1145 #define MAYBE_WillRestartSamplerAfterIdleShutdown \ | |
1146 DISABLED_WillRestartSamplerAfterIdleShutdown | |
1147 #endif | |
1148 TEST_F(StackSamplingProfilerTest, MAYBE_WillRestartSamplerAfterIdleShutdown) { | |
1149 SamplingParams params; | |
1150 params.sampling_interval = TimeDelta::FromMilliseconds(0); | |
1151 params.samples_per_burst = 1; | |
1152 | |
1153 std::vector<CallStackProfile> profiles; | |
1154 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles); | |
1155 ASSERT_EQ(1u, profiles.size()); | |
1156 | |
1157 // Capture thread should still be running at this point. | |
1158 ASSERT_TRUE(StackSamplingProfiler::TestAPI::IsSamplingThreadRunning()); | |
1159 | |
1160 // Post a ShutdownTask on the sampling thread which, when executed, will | |
1161 // mark the thread as EXITING and begin shut down of the thread. | |
1162 StackSamplingProfiler::TestAPI::PerformSamplingThreadIdleShutdown(false); | |
1163 | |
1164 // Ensure another capture will start the sampling thread and run. | |
1165 profiles.clear(); | |
1166 CaptureProfiles(params, AVeryLongTimeDelta(), &profiles); | |
1167 ASSERT_EQ(1u, profiles.size()); | |
1168 EXPECT_TRUE(StackSamplingProfiler::TestAPI::IsSamplingThreadRunning()); | |
1169 } | |
1170 | |
1171 // Checks that it's safe to stop a task after it's completed and the sampling | |
1172 // thread has shut-down for being idle. | |
1173 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
1174 #define MAYBE_StopAfterIdleShutdown StopAfterIdleShutdown | |
1175 #else | |
1176 #define MAYBE_StopAfterIdleShutdown DISABLED_StopAfterIdleShutdown | |
1177 #endif | |
1178 TEST_F(StackSamplingProfilerTest, MAYBE_StopAfterIdleShutdown) { | |
1179 WithTargetThread([](PlatformThreadId target_thread_id) { | |
1180 SamplingParams params; | |
1181 | |
1182 params.sampling_interval = TimeDelta::FromMilliseconds(1); | |
1183 params.samples_per_burst = 1; | |
1184 | |
1185 TestProfilerInfo profiler_info(target_thread_id, params); | |
1186 | |
1187 profiler_info.profiler.Start(); | |
1188 profiler_info.completed.Wait(); | |
1189 | |
1190 // Capture thread should still be running at this point. | |
1191 ASSERT_TRUE(StackSamplingProfiler::TestAPI::IsSamplingThreadRunning()); | |
1192 | |
1193 // Perform an idle shutdown. | |
1194 StackSamplingProfiler::TestAPI::PerformSamplingThreadIdleShutdown(false); | |
1195 | |
1196 // Stop should be safe though its impossible to know at this moment if the | |
1197 // sampling thread has completely exited or will just "stop soon". | |
1198 profiler_info.profiler.Stop(); | |
1199 }); | |
1200 } | |
1201 | |
1202 // Checks that profilers can run both before and after the sampling thread has | |
1203 // started. | |
1204 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
1205 #define MAYBE_ProfileBeforeAndAfterSamplingThreadRunning \ | |
1206 ProfileBeforeAndAfterSamplingThreadRunning | |
1207 #else | |
1208 #define MAYBE_ProfileBeforeAndAfterSamplingThreadRunning \ | |
1209 DISABLED_ProfileBeforeAndAfterSamplingThreadRunning | |
1210 #endif | |
1211 TEST_F(StackSamplingProfilerTest, | |
1212 MAYBE_ProfileBeforeAndAfterSamplingThreadRunning) { | |
1213 WithTargetThread([](PlatformThreadId target_thread_id) { | |
1214 std::vector<SamplingParams> params(2); | |
1215 | |
1216 params[0].initial_delay = AVeryLongTimeDelta(); | |
1217 params[0].sampling_interval = TimeDelta::FromMilliseconds(1); | |
1218 params[0].samples_per_burst = 1; | |
1219 | |
1220 params[1].initial_delay = TimeDelta::FromMilliseconds(0); | |
1221 params[1].sampling_interval = TimeDelta::FromMilliseconds(1); | |
1222 params[1].samples_per_burst = 1; | |
1223 | |
1224 std::vector<std::unique_ptr<TestProfilerInfo>> profiler_infos = | |
1225 CreateProfilers(target_thread_id, params); | |
1226 | |
1227 // First profiler is started when there has never been a sampling thread. | |
1228 EXPECT_FALSE(StackSamplingProfiler::TestAPI::IsSamplingThreadRunning()); | |
1229 profiler_infos[0]->profiler.Start(); | |
1230 // Second profiler is started when sampling thread is already running. | |
1231 EXPECT_TRUE(StackSamplingProfiler::TestAPI::IsSamplingThreadRunning()); | |
1232 profiler_infos[1]->profiler.Start(); | |
1233 | |
1234 // Only the second profiler should finish before test times out. | |
1235 size_t completed_profiler = WaitForSamplingComplete(profiler_infos); | |
1236 EXPECT_EQ(1U, completed_profiler); | |
1237 }); | |
1238 } | |
1239 | |
1240 // Checks that an idle-shutdown task will abort if a new profiler starts | |
1241 // between when it was posted and when it runs. | |
1242 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
1243 #define MAYBE_IdleShutdownAbort IdleShutdownAbort | |
1244 #else | |
1245 #define MAYBE_IdleShutdownAbort DISABLED_IdleShutdownAbort | |
1246 #endif | |
1247 TEST_F(StackSamplingProfilerTest, MAYBE_IdleShutdownAbort) { | |
1248 WithTargetThread([](PlatformThreadId target_thread_id) { | |
1249 SamplingParams params; | |
1250 | |
1251 params.sampling_interval = TimeDelta::FromMilliseconds(1); | |
1252 params.samples_per_burst = 1; | |
1253 | |
1254 TestProfilerInfo profiler_info(target_thread_id, params); | |
1255 | |
1256 profiler_info.profiler.Start(); | |
1257 profiler_info.completed.Wait(); | |
1258 EXPECT_EQ(1u, profiler_info.profiles.size()); | |
1259 | |
1260 // Perform an idle shutdown but simulate that a new capture is started | |
1261 // before it can actually run. | |
1262 StackSamplingProfiler::TestAPI::PerformSamplingThreadIdleShutdown(true); | |
1263 | |
1264 // Though the shutdown-task has been executed, any actual exit of the | |
1265 // thread is asynchronous so there is no way to detect that *didn't* exit | |
1266 // except to wait a reasonable amount of time and then check. Since the | |
1267 // thread was just running ("perform" blocked until it was), it should | |
1268 // finish almost immediately and without any waiting for tasks or events. | |
1269 PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); | |
1270 EXPECT_TRUE(StackSamplingProfiler::TestAPI::IsSamplingThreadRunning()); | |
1271 | |
1272 // Ensure that it's still possible to run another sampler. Restarting the | |
1273 // already defined sampler is fine. | |
1274 profiler_info.Reset(); | |
Mike Wittman
2017/04/04 17:59:52
Now that we have the TestProfilerInfo struct it wo
bcwhite
2017/04/06 16:18:49
Done.
| |
1275 profiler_info.profiler.Start(); | |
1276 profiler_info.completed.Wait(); | |
1277 EXPECT_EQ(1u, profiler_info.profiles.size()); | |
1278 }); | |
1279 } | |
1280 | |
1281 // Checks that synchronized multiple sampling requests execute in parallel. | |
1282 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
1283 #define MAYBE_ConcurrentProfiling_InSync ConcurrentProfiling_InSync | |
1284 #else | |
1285 #define MAYBE_ConcurrentProfiling_InSync DISABLED_ConcurrentProfiling_InSync | |
1286 #endif | |
1287 TEST_F(StackSamplingProfilerTest, MAYBE_ConcurrentProfiling_InSync) { | |
1288 WithTargetThread([](PlatformThreadId target_thread_id) { | |
1289 std::vector<SamplingParams> params(2); | |
1290 | |
1291 // Providing an initial delay makes it more likely that both will be | |
1292 // scheduled before either starts to run. Once started, samples will | |
1293 // run ordered by their scheduled, interleaved times regardless of | |
1294 // whatever interval the thread wakes up. Thus, total execution time | |
1295 // will be 10ms (delay) + 10x1ms (sampling) + 1/2 timer minimum interval. | |
886 params[0].initial_delay = TimeDelta::FromMilliseconds(10); | 1296 params[0].initial_delay = TimeDelta::FromMilliseconds(10); |
887 params[0].sampling_interval = TimeDelta::FromMilliseconds(0); | 1297 params[0].sampling_interval = TimeDelta::FromMilliseconds(1); |
888 params[0].samples_per_burst = 1; | 1298 params[0].samples_per_burst = 9; |
889 | 1299 |
890 params[1].sampling_interval = TimeDelta::FromMilliseconds(0); | 1300 params[1].initial_delay = TimeDelta::FromMilliseconds(11); |
891 params[1].samples_per_burst = 1; | 1301 params[1].sampling_interval = TimeDelta::FromMilliseconds(1); |
892 | 1302 params[1].samples_per_burst = 8; |
893 CallStackProfiles profiles[2]; | 1303 |
894 std::vector<std::unique_ptr<WaitableEvent>> sampling_completed(2); | 1304 std::vector<std::unique_ptr<TestProfilerInfo>> profiler_infos = |
895 std::vector<std::unique_ptr<StackSamplingProfiler>> profiler(2); | 1305 CreateProfilers(target_thread_id, params); |
896 for (int i = 0; i < 2; ++i) { | 1306 |
897 sampling_completed[i] = | 1307 profiler_infos[0]->profiler.Start(); |
898 MakeUnique<WaitableEvent>(WaitableEvent::ResetPolicy::AUTOMATIC, | 1308 profiler_infos[1]->profiler.Start(); |
899 WaitableEvent::InitialState::NOT_SIGNALED); | 1309 |
900 const StackSamplingProfiler::CompletedCallback callback = | |
901 Bind(&SaveProfilesAndSignalEvent, Unretained(&profiles[i]), | |
902 Unretained(sampling_completed[i].get())); | |
903 profiler[i] = MakeUnique<StackSamplingProfiler>(target_thread_id, | |
904 params[i], callback); | |
905 } | |
906 | |
907 profiler[0]->Start(); | |
908 profiler[1]->Start(); | |
909 | |
910 std::vector<WaitableEvent*> sampling_completed_rawptrs( | |
911 sampling_completed.size()); | |
912 std::transform( | |
913 sampling_completed.begin(), sampling_completed.end(), | |
914 sampling_completed_rawptrs.begin(), | |
915 [](const std::unique_ptr<WaitableEvent>& elem) { return elem.get(); }); | |
916 // Wait for one profiler to finish. | 1310 // Wait for one profiler to finish. |
917 size_t completed_profiler = | 1311 size_t completed_profiler = WaitForSamplingComplete(profiler_infos); |
918 WaitableEvent::WaitMany(sampling_completed_rawptrs.data(), 2); | 1312 ASSERT_EQ(1u, profiler_infos[completed_profiler]->profiles.size()); |
919 EXPECT_EQ(1u, profiles[completed_profiler].size()); | |
920 | 1313 |
921 size_t other_profiler = 1 - completed_profiler; | 1314 size_t other_profiler = 1 - completed_profiler; |
922 // Give the other profiler a chance to run and observe that it hasn't. | 1315 // Wait for the other profiler to finish. |
923 EXPECT_FALSE(sampling_completed[other_profiler]->TimedWait( | 1316 profiler_infos[other_profiler]->completed.Wait(); |
924 TimeDelta::FromMilliseconds(25))); | 1317 ASSERT_EQ(1u, profiler_infos[other_profiler]->profiles.size()); |
925 | 1318 |
926 // Start the other profiler again and it should run. | 1319 // Ensure each got the correct number of samples. |
927 profiler[other_profiler]->Start(); | 1320 EXPECT_EQ(9u, profiler_infos[0]->profiles[0].samples.size()); |
928 sampling_completed[other_profiler]->Wait(); | 1321 EXPECT_EQ(8u, profiler_infos[1]->profiles[0].samples.size()); |
929 EXPECT_EQ(1u, profiles[other_profiler].size()); | 1322 }); |
930 }); | 1323 } |
931 } | 1324 |
932 | 1325 // Checks that several mixed sampling requests execute in parallel. |
1326 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
1327 #define MAYBE_ConcurrentProfiling_Mixed ConcurrentProfiling_Mixed | |
1328 #else | |
1329 #define MAYBE_ConcurrentProfiling_Mixed DISABLED_ConcurrentProfiling_Mixed | |
1330 #endif | |
1331 TEST_F(StackSamplingProfilerTest, MAYBE_ConcurrentProfiling_Mixed) { | |
1332 WithTargetThread([](PlatformThreadId target_thread_id) { | |
1333 std::vector<SamplingParams> params(3); | |
1334 | |
1335 params[0].initial_delay = TimeDelta::FromMilliseconds(8); | |
1336 params[0].sampling_interval = TimeDelta::FromMilliseconds(4); | |
1337 params[0].samples_per_burst = 10; | |
1338 | |
1339 params[1].initial_delay = TimeDelta::FromMilliseconds(9); | |
1340 params[1].sampling_interval = TimeDelta::FromMilliseconds(3); | |
1341 params[1].samples_per_burst = 10; | |
1342 | |
1343 params[2].initial_delay = TimeDelta::FromMilliseconds(10); | |
1344 params[2].sampling_interval = TimeDelta::FromMilliseconds(2); | |
1345 params[2].samples_per_burst = 10; | |
1346 | |
1347 std::vector<std::unique_ptr<TestProfilerInfo>> profiler_infos = | |
1348 CreateProfilers(target_thread_id, params); | |
1349 | |
1350 for (size_t i = 0; i < profiler_infos.size(); ++i) | |
1351 profiler_infos[i]->profiler.Start(); | |
1352 | |
1353 // Wait for one profiler to finish. | |
1354 size_t completed_profiler = WaitForSamplingComplete(profiler_infos); | |
1355 EXPECT_EQ(1u, profiler_infos[completed_profiler]->profiles.size()); | |
1356 // Stop and destroy all profilers, always in the same order. Don't crash. | |
1357 for (size_t i = 0; i < profiler_infos.size(); ++i) | |
1358 profiler_infos[i]->profiler.Stop(); | |
1359 for (size_t i = 0; i < profiler_infos.size(); ++i) | |
1360 profiler_infos[i].reset(); | |
1361 }); | |
1362 } | |
1363 | |
933 // Checks that a stack that runs through another library produces a stack with | 1364 // Checks that a stack that runs through another library produces a stack with |
934 // the expected functions. | 1365 // the expected functions. |
935 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 1366 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
936 #define MAYBE_OtherLibrary OtherLibrary | 1367 #define MAYBE_OtherLibrary OtherLibrary |
937 #else | 1368 #else |
938 #define MAYBE_OtherLibrary DISABLED_OtherLibrary | 1369 #define MAYBE_OtherLibrary DISABLED_OtherLibrary |
939 #endif | 1370 #endif |
940 TEST(StackSamplingProfilerTest, MAYBE_OtherLibrary) { | 1371 TEST_F(StackSamplingProfilerTest, MAYBE_OtherLibrary) { |
941 SamplingParams params; | 1372 SamplingParams params; |
942 params.sampling_interval = TimeDelta::FromMilliseconds(0); | 1373 params.sampling_interval = TimeDelta::FromMilliseconds(0); |
943 params.samples_per_burst = 1; | 1374 params.samples_per_burst = 1; |
944 | 1375 |
945 std::vector<CallStackProfile> profiles; | 1376 std::vector<CallStackProfile> profiles; |
946 { | 1377 { |
947 ScopedNativeLibrary other_library(LoadOtherLibrary()); | 1378 ScopedNativeLibrary other_library(LoadOtherLibrary()); |
948 WithTargetThread( | 1379 WithTargetThread( |
949 [¶ms, &profiles](PlatformThreadId target_thread_id) { | 1380 [¶ms, &profiles](PlatformThreadId target_thread_id) { |
950 WaitableEvent sampling_thread_completed( | 1381 WaitableEvent sampling_thread_completed( |
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1001 << "Stack:\n" << FormatSampleForDiagnosticOutput(sample, profile.modules); | 1432 << "Stack:\n" << FormatSampleForDiagnosticOutput(sample, profile.modules); |
1002 } | 1433 } |
1003 | 1434 |
1004 // Checks that a stack that runs through a library that is unloading produces a | 1435 // Checks that a stack that runs through a library that is unloading produces a |
1005 // stack, and doesn't crash. | 1436 // stack, and doesn't crash. |
1006 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 1437 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
1007 #define MAYBE_UnloadingLibrary UnloadingLibrary | 1438 #define MAYBE_UnloadingLibrary UnloadingLibrary |
1008 #else | 1439 #else |
1009 #define MAYBE_UnloadingLibrary DISABLED_UnloadingLibrary | 1440 #define MAYBE_UnloadingLibrary DISABLED_UnloadingLibrary |
1010 #endif | 1441 #endif |
1011 TEST(StackSamplingProfilerTest, MAYBE_UnloadingLibrary) { | 1442 TEST_F(StackSamplingProfilerTest, MAYBE_UnloadingLibrary) { |
1012 TestLibraryUnload(false); | 1443 TestLibraryUnload(false); |
1013 } | 1444 } |
1014 | 1445 |
1015 // Checks that a stack that runs through a library that has been unloaded | 1446 // Checks that a stack that runs through a library that has been unloaded |
1016 // produces a stack, and doesn't crash. | 1447 // produces a stack, and doesn't crash. |
1017 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | 1448 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) |
1018 #define MAYBE_UnloadedLibrary UnloadedLibrary | 1449 #define MAYBE_UnloadedLibrary UnloadedLibrary |
1019 #else | 1450 #else |
1020 #define MAYBE_UnloadedLibrary DISABLED_UnloadedLibrary | 1451 #define MAYBE_UnloadedLibrary DISABLED_UnloadedLibrary |
1021 #endif | 1452 #endif |
1022 TEST(StackSamplingProfilerTest, MAYBE_UnloadedLibrary) { | 1453 TEST_F(StackSamplingProfilerTest, MAYBE_UnloadedLibrary) { |
1023 TestLibraryUnload(true); | 1454 TestLibraryUnload(true); |
1024 } | 1455 } |
1025 | 1456 |
1457 // Checks that different threads can be sampled in parallel. | |
1458 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
1459 #define MAYBE_MultipleSampledThreads MultipleSampledThreads | |
1460 #else | |
1461 #define MAYBE_MultipleSampledThreads DISABLED_MultipleSampledThreads | |
1462 #endif | |
1463 TEST_F(StackSamplingProfilerTest, MAYBE_MultipleSampledThreads) { | |
1464 // Create target threads. The extra parethesis around the StackConfiguration | |
1465 // call are to avoid the most-vexing-parse problem. | |
1466 TargetThread target_thread1((StackConfiguration(StackConfiguration::NORMAL))); | |
1467 TargetThread target_thread2((StackConfiguration(StackConfiguration::NORMAL))); | |
1468 PlatformThreadHandle target_thread_handle1, target_thread_handle2; | |
1469 EXPECT_TRUE( | |
1470 PlatformThread::Create(0, &target_thread1, &target_thread_handle1)); | |
1471 EXPECT_TRUE( | |
1472 PlatformThread::Create(0, &target_thread2, &target_thread_handle2)); | |
1473 target_thread1.WaitForThreadStart(); | |
1474 target_thread2.WaitForThreadStart(); | |
1475 | |
1476 // Providing an initial delay makes it more likely that both will be | |
1477 // scheduled before either starts to run. Once started, samples will | |
1478 // run ordered by their scheduled, interleaved times regardless of | |
1479 // whatever interval the thread wakes up. | |
1480 SamplingParams params1, params2; | |
1481 params1.initial_delay = TimeDelta::FromMilliseconds(10); | |
1482 params1.sampling_interval = TimeDelta::FromMilliseconds(1); | |
1483 params1.samples_per_burst = 9; | |
1484 params2.initial_delay = TimeDelta::FromMilliseconds(10); | |
1485 params2.sampling_interval = TimeDelta::FromMilliseconds(1); | |
1486 params2.samples_per_burst = 8; | |
1487 | |
1488 std::vector<CallStackProfile> profiles1, profiles2; | |
1489 | |
1490 WaitableEvent sampling_thread_completed1( | |
1491 WaitableEvent::ResetPolicy::MANUAL, | |
1492 WaitableEvent::InitialState::NOT_SIGNALED); | |
1493 const StackSamplingProfiler::CompletedCallback callback1 = | |
1494 Bind(&SaveProfilesAndSignalEvent, Unretained(&profiles1), | |
1495 Unretained(&sampling_thread_completed1)); | |
1496 StackSamplingProfiler profiler1(target_thread1.id(), params1, callback1); | |
1497 | |
1498 WaitableEvent sampling_thread_completed2( | |
1499 WaitableEvent::ResetPolicy::MANUAL, | |
1500 WaitableEvent::InitialState::NOT_SIGNALED); | |
1501 const StackSamplingProfiler::CompletedCallback callback2 = | |
1502 Bind(&SaveProfilesAndSignalEvent, Unretained(&profiles2), | |
1503 Unretained(&sampling_thread_completed2)); | |
1504 StackSamplingProfiler profiler2(target_thread2.id(), params2, callback2); | |
1505 | |
1506 // Finally the real work. | |
1507 profiler1.Start(); | |
1508 profiler2.Start(); | |
1509 sampling_thread_completed1.Wait(); | |
1510 sampling_thread_completed2.Wait(); | |
1511 ASSERT_EQ(1u, profiles1.size()); | |
1512 EXPECT_EQ(9u, profiles1[0].samples.size()); | |
1513 ASSERT_EQ(1u, profiles2.size()); | |
1514 EXPECT_EQ(8u, profiles2[0].samples.size()); | |
1515 | |
1516 target_thread1.SignalThreadToFinish(); | |
1517 target_thread2.SignalThreadToFinish(); | |
1518 PlatformThread::Join(target_thread_handle1); | |
1519 PlatformThread::Join(target_thread_handle2); | |
1520 } | |
1521 | |
1522 // A simple thread that runs a profiler on another thread. | |
1523 class ProfilerThread : public SimpleThread { | |
1524 public: | |
1525 ProfilerThread(const std::string& name, | |
1526 PlatformThreadId thread_id, | |
1527 const SamplingParams& params) | |
1528 : SimpleThread(name, Options()), | |
1529 run_(WaitableEvent::ResetPolicy::MANUAL, | |
1530 WaitableEvent::InitialState::NOT_SIGNALED), | |
1531 completed_(WaitableEvent::ResetPolicy::MANUAL, | |
1532 WaitableEvent::InitialState::NOT_SIGNALED), | |
1533 profiler_(thread_id, | |
1534 params, | |
1535 Bind(&SaveProfilesAndSignalEvent, | |
1536 Unretained(&profiles_), | |
1537 Unretained(&completed_))) {} | |
1538 | |
1539 void Run() override { | |
1540 run_.Wait(); | |
1541 profiler_.Start(); | |
1542 } | |
1543 | |
1544 void Go() { run_.Signal(); } | |
1545 | |
1546 void Wait() { completed_.Wait(); } | |
1547 | |
1548 CallStackProfiles& profiles() { return profiles_; } | |
1549 | |
1550 private: | |
1551 WaitableEvent run_; | |
1552 | |
1553 CallStackProfiles profiles_; | |
1554 WaitableEvent completed_; | |
1555 StackSamplingProfiler profiler_; | |
1556 }; | |
1557 | |
1558 // Checks that different threads can run samplers in parallel. | |
1559 #if defined(STACK_SAMPLING_PROFILER_SUPPORTED) | |
1560 #define MAYBE_MultipleProfilerThreads MultipleProfilerThreads | |
1561 #else | |
1562 #define MAYBE_MultipleProfilerThreads DISABLED_MultipleProfilerThreads | |
1563 #endif | |
1564 TEST_F(StackSamplingProfilerTest, MAYBE_MultipleProfilerThreads) { | |
1565 WithTargetThread([](PlatformThreadId target_thread_id) { | |
1566 // Providing an initial delay makes it more likely that both will be | |
1567 // scheduled before either starts to run. Once started, samples will | |
1568 // run ordered by their scheduled, interleaved times regardless of | |
1569 // whatever interval the thread wakes up. | |
1570 SamplingParams params1, params2; | |
1571 params1.initial_delay = TimeDelta::FromMilliseconds(10); | |
1572 params1.sampling_interval = TimeDelta::FromMilliseconds(1); | |
1573 params1.samples_per_burst = 9; | |
1574 params2.initial_delay = TimeDelta::FromMilliseconds(10); | |
1575 params2.sampling_interval = TimeDelta::FromMilliseconds(1); | |
1576 params2.samples_per_burst = 8; | |
1577 | |
1578 // Start the profiler threads and give them a moment to get going. | |
1579 ProfilerThread profiler_thread1("profiler1", target_thread_id, params1); | |
1580 ProfilerThread profiler_thread2("profiler2", target_thread_id, params2); | |
1581 profiler_thread1.Start(); | |
1582 profiler_thread2.Start(); | |
1583 PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(10)); | |
1584 | |
1585 // This will (approximately) synchronize the two threads. | |
1586 profiler_thread1.Go(); | |
1587 profiler_thread2.Go(); | |
1588 | |
1589 // Wait for them both to finish and validate collection. | |
1590 profiler_thread1.Wait(); | |
1591 profiler_thread2.Wait(); | |
1592 ASSERT_EQ(1u, profiler_thread1.profiles().size()); | |
1593 EXPECT_EQ(9u, profiler_thread1.profiles()[0].samples.size()); | |
1594 ASSERT_EQ(1u, profiler_thread2.profiles().size()); | |
1595 EXPECT_EQ(8u, profiler_thread2.profiles()[0].samples.size()); | |
1596 | |
1597 profiler_thread1.Join(); | |
1598 profiler_thread2.Join(); | |
1599 }); | |
1600 } | |
1601 | |
1026 } // namespace base | 1602 } // namespace base |
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