Slava Egorov
0fee95455c
Move away from setting command line flags and calling Cleanup or Init to reinitialize the profiler. Split starting and stopping the profiler into separate methods and keep only one-time initialization/cleanup in Init and Cleanup methods. Create a separate method for reconfiguring the profiler Profiler::SetConfig. This removes data races which were plaguing older code and makes it simpler to reason about. Fixes https://github.com/dart-lang/sdk/issues/62038 Fixes https://github.com/dart-lang/sdk/issues/61828 TEST=ci Cq-Include-Trybots: luci.dart.try:vm-tsan-mac-release-arm64-try,vm-tsan-linux-release-x64-try Change-Id: I679aa0a8724e39624e76abfad6814fe06a6a6964 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/472862 Commit-Queue: Slava Egorov <vegorov@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_THREAD_INTERRUPTER_H_
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#define RUNTIME_VM_THREAD_INTERRUPTER_H_
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#include "vm/allocation.h"
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#include "vm/os_thread.h"
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#include "vm/signal_handler.h"
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#include "vm/thread.h"
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namespace dart {
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struct InterruptedThreadState {
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uintptr_t pc;
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uintptr_t csp;
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uintptr_t dsp;
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uintptr_t fp;
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uintptr_t lr;
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};
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class ThreadInterrupter : public AllStatic {
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public:
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// Initialize thread interrupter state on VM startup.
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static void Init();
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// Cleanup thread interrupter state on VM shutdown.
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static void Cleanup();
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// Startup underlying thread.
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static void Startup();
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// Shutdown the underlying thread.
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static void Shutdown();
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// Delay between interrupts.
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//
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// Warning: This method will have no effect if
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// |ThreadInterrupter::initialized_| is false.
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static void SetInterruptPeriod(intptr_t period);
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// Wake up the thread interrupter thread.
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static void WakeUp();
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// Interrupt a thread.
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static void InterruptThread(OSThread* thread);
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private:
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static constexpr intptr_t kMaxThreads = 4096;
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static bool initialized_;
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static bool shutdown_;
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static bool thread_running_;
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static bool woken_up_;
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static ThreadJoinId interrupter_thread_id_;
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static Monitor* monitor_;
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static intptr_t interrupt_period_;
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static intptr_t current_wait_time_;
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static bool InDeepSleep() {
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return current_wait_time_ == Monitor::kNoTimeout;
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}
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static void ThreadMain(uword parameters);
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static void InstallSignalHandler();
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static void RemoveSignalHandler();
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friend class ThreadInterrupterVisitIsolates;
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};
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} // namespace dart
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#endif // RUNTIME_VM_THREAD_INTERRUPTER_H_
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