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https://github.com/dart-lang/sdk
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347c49354e
Add asserts against using mutexes or monitors during the signal handler or suspended thread scopes. Poison use of Thread::Current during these scopes. TEST=ci Bug: https://github.com/dart-lang/sdk/issues/51124 Change-Id: If1df06520114105b2b4d8c81b4650bdb4efeaf50 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/283703 Reviewed-by: Ben Konyi <bkonyi@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
129 lines
4.3 KiB
C++
129 lines
4.3 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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#include "platform/globals.h"
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#if defined(DART_HOST_OS_WINDOWS)
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#include "vm/flags.h"
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#include "vm/os.h"
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#include "vm/profiler.h"
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#include "vm/thread_interrupter.h"
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namespace dart {
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#ifndef PRODUCT
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DECLARE_FLAG(bool, trace_thread_interrupter);
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#define kThreadError -1
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class ThreadInterrupterWin : public AllStatic {
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public:
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static bool GrabRegisters(HANDLE handle, InterruptedThreadState* state) {
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CONTEXT context;
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memset(&context, 0, sizeof(context));
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#if defined(HOST_ARCH_IA32)
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// On IA32, CONTEXT_CONTROL includes Eip, Ebp, and Esp.
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context.ContextFlags = CONTEXT_CONTROL;
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#elif defined(HOST_ARCH_X64) || defined(HOST_ARCH_ARM) || \
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defined(HOST_ARCH_ARM64)
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// On X64, CONTEXT_CONTROL includes Rip and Rsp. Rbp is classified
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// as an "integer" register.
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context.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER;
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#else
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#error Unsupported architecture.
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#endif
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if (GetThreadContext(handle, &context) != 0) {
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#if defined(HOST_ARCH_IA32)
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state->pc = static_cast<uintptr_t>(context.Eip);
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state->fp = static_cast<uintptr_t>(context.Ebp);
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state->csp = static_cast<uintptr_t>(context.Esp);
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state->dsp = static_cast<uintptr_t>(context.Esp);
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#elif defined(HOST_ARCH_X64)
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state->pc = static_cast<uintptr_t>(context.Rip);
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state->fp = static_cast<uintptr_t>(context.Rbp);
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state->csp = static_cast<uintptr_t>(context.Rsp);
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state->dsp = static_cast<uintptr_t>(context.Rsp);
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#elif defined(HOST_ARCH_ARM)
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state->pc = static_cast<uintptr_t>(context.Pc);
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state->fp = static_cast<uintptr_t>(context.R11);
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state->csp = static_cast<uintptr_t>(context.Sp);
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state->dsp = static_cast<uintptr_t>(context.Sp);
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#elif defined(HOST_ARCH_ARM64)
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state->pc = static_cast<uintptr_t>(context.Pc);
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state->fp = static_cast<uintptr_t>(context.Fp);
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state->csp = static_cast<uintptr_t>(context.Sp);
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state->dsp = static_cast<uintptr_t>(context.X15);
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#else
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#error Unsupported architecture.
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#endif
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return true;
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}
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return false;
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}
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static void Interrupt(OSThread* os_thread) {
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ASSERT(!OSThread::Compare(GetCurrentThreadId(), os_thread->id()));
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HANDLE handle = OpenThread(
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THREAD_GET_CONTEXT | THREAD_QUERY_INFORMATION | THREAD_SUSPEND_RESUME,
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false, os_thread->id());
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ASSERT(handle != NULL);
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DWORD result = SuspendThread(handle);
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if (result == kThreadError) {
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if (FLAG_trace_thread_interrupter) {
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OS::PrintErr("ThreadInterrupter failed to suspend thread %p\n",
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reinterpret_cast<void*>(os_thread->id()));
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}
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CloseHandle(handle);
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return;
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}
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InterruptedThreadState its;
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if (!GrabRegisters(handle, &its)) {
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// Failed to get thread registers.
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ResumeThread(handle);
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if (FLAG_trace_thread_interrupter) {
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OS::PrintErr("ThreadInterrupter failed to get registers for %p\n",
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reinterpret_cast<void*>(os_thread->id()));
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}
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CloseHandle(handle);
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return;
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}
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// Currently we sample only threads that are associated
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// with an isolate. It is safe to call 'os_thread->thread()'
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// here as the thread which is being queried is suspended.
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Thread* thread = static_cast<Thread*>(os_thread->thread());
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if (thread != NULL) {
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ThreadInterruptScope signal_handler_scope;
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Profiler::SampleThread(thread, its);
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}
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ResumeThread(handle);
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CloseHandle(handle);
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}
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};
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void ThreadInterrupter::InterruptThread(OSThread* thread) {
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if (FLAG_trace_thread_interrupter) {
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OS::PrintErr("ThreadInterrupter suspending %p\n",
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reinterpret_cast<void*>(thread->id()));
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}
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ThreadInterrupterWin::Interrupt(thread);
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if (FLAG_trace_thread_interrupter) {
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OS::PrintErr("ThreadInterrupter resuming %p\n",
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reinterpret_cast<void*>(thread->id()));
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}
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}
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void ThreadInterrupter::InstallSignalHandler() {
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// Nothing to do on Windows.
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}
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void ThreadInterrupter::RemoveSignalHandler() {
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// Nothing to do on Windows.
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}
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#endif // !PRODUCT
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} // namespace dart
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#endif // defined(DART_HOST_OS_WINDOWS)
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