mirror of
https://github.com/dart-lang/sdk
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b68351fbc3
TEST=build Change-Id: Ie3be570c274b0275a995a0f54b5e6ccdfc77ccd3 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/292287 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Brian Quinlan <bquinlan@google.com>
166 lines
4.2 KiB
C++
166 lines
4.2 KiB
C++
// Copyright (c) 2012, 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) && !defined(DART_USE_ABSL)
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#include "bin/thread.h"
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#include "bin/thread_win.h"
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#include <process.h> // NOLINT
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#include "platform/assert.h"
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namespace dart {
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namespace bin {
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class ThreadStartData {
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public:
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ThreadStartData(const char* name,
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Thread::ThreadStartFunction function,
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uword parameter)
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: name_(name), function_(function), parameter_(parameter) {}
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const char* name() const { return name_; }
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Thread::ThreadStartFunction function() const { return function_; }
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uword parameter() const { return parameter_; }
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private:
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const char* name_;
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Thread::ThreadStartFunction function_;
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uword parameter_;
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DISALLOW_COPY_AND_ASSIGN(ThreadStartData);
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};
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// Dispatch to the thread start function provided by the caller. This trampoline
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// is used to ensure that the thread is properly destroyed if the thread just
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// exits.
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static unsigned int __stdcall ThreadEntry(void* data_ptr) {
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ThreadStartData* data = reinterpret_cast<ThreadStartData*>(data_ptr);
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Thread::ThreadStartFunction function = data->function();
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uword parameter = data->parameter();
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delete data;
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// Call the supplied thread start function handing it its parameters.
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function(parameter);
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return 0;
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}
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int Thread::Start(const char* name,
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ThreadStartFunction function,
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uword parameter) {
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ThreadStartData* start_data = new ThreadStartData(name, function, parameter);
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uint32_t tid;
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uintptr_t thread = _beginthreadex(nullptr, Thread::GetMaxStackSize(),
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ThreadEntry, start_data, 0, &tid);
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if ((thread == -1L) || (thread == 0)) {
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#ifdef DEBUG
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fprintf(stderr, "_beginthreadex error: %d (%s)\n", errno, strerror(errno));
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#endif
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return errno;
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}
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// Close the handle, so we don't leak the thread object.
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CloseHandle(reinterpret_cast<HANDLE>(thread));
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return 0;
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}
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const ThreadId Thread::kInvalidThreadId = 0;
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intptr_t Thread::GetMaxStackSize() {
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const int kStackSize = (128 * kWordSize * KB);
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return kStackSize;
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}
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ThreadId Thread::GetCurrentThreadId() {
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return ::GetCurrentThreadId();
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}
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bool Thread::Compare(ThreadId a, ThreadId b) {
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return (a == b);
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}
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Mutex::Mutex() {
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InitializeSRWLock(&data_.lock_);
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}
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Mutex::~Mutex() {}
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void Mutex::Lock() {
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AcquireSRWLockExclusive(&data_.lock_);
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}
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bool Mutex::TryLock() {
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if (TryAcquireSRWLockExclusive(&data_.lock_) != 0) {
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return true;
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}
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return false;
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}
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void Mutex::Unlock() {
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ReleaseSRWLockExclusive(&data_.lock_);
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}
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Monitor::Monitor() {
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InitializeCriticalSection(&data_.cs_);
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InitializeConditionVariable(&data_.cond_);
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}
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Monitor::~Monitor() {
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DeleteCriticalSection(&data_.cs_);
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}
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void Monitor::Enter() {
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EnterCriticalSection(&data_.cs_);
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}
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void Monitor::Exit() {
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LeaveCriticalSection(&data_.cs_);
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}
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Monitor::WaitResult Monitor::Wait(int64_t millis) {
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Monitor::WaitResult retval = kNotified;
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if (millis == kNoTimeout) {
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SleepConditionVariableCS(&data_.cond_, &data_.cs_, INFINITE);
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} else {
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// Wait for the given period of time for a Notify or a NotifyAll
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// event.
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if (!SleepConditionVariableCS(&data_.cond_, &data_.cs_, millis)) {
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ASSERT(GetLastError() == ERROR_TIMEOUT);
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retval = kTimedOut;
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}
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}
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return retval;
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}
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Monitor::WaitResult Monitor::WaitMicros(int64_t micros) {
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// TODO(johnmccutchan): Investigate sub-millisecond sleep times on Windows.
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int64_t millis = micros / kMicrosecondsPerMillisecond;
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if ((millis * kMicrosecondsPerMillisecond) < micros) {
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// We've been asked to sleep for a fraction of a millisecond,
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// this isn't supported on Windows. Bumps milliseconds up by one
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// so that we never return too early. We likely return late though.
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millis += 1;
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}
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return Wait(millis);
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}
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void Monitor::Notify() {
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WakeConditionVariable(&data_.cond_);
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}
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void Monitor::NotifyAll() {
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WakeAllConditionVariable(&data_.cond_);
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}
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} // namespace bin
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} // namespace dart
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#endif // defined(DART_HOST_OS_WINDOWS) && !defined(DART_USE_ABSL)
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