mirror of
https://github.com/dart-lang/sdk
synced 2024-09-05 00:13:50 +00:00
[vm] Add build-time option to use absl mutexes in place of pthread mutexes.
TEST=ci, cbuild Bug: b/220994782 Change-Id: Id1a15d0d9fcef192847b25a2549730eb1014a99e Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/236760 Reviewed-by: Alexander Aprelev <aam@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
This commit is contained in:
parent
d4bc590c27
commit
a48d05c8f9
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@ -45,6 +45,8 @@ builtin_impl_sources = [
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"isolate_data.h",
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"lockers.h",
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"thread.h",
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"thread_absl.cc",
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"thread_absl.h",
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"thread_android.cc",
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"thread_android.h",
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"thread_fuchsia.cc",
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@ -16,7 +16,9 @@ class Monitor;
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} // namespace dart
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// Declare the OS-specific types ahead of defining the generic classes.
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#if defined(DART_HOST_OS_ANDROID)
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#if defined(DART_USE_ABSL)
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#include "bin/thread_absl.h"
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#elif defined(DART_HOST_OS_ANDROID)
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#include "bin/thread_android.h"
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#elif defined(DART_HOST_OS_FUCHSIA)
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#include "bin/thread_fuchsia.h"
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221
runtime/bin/thread_absl.cc
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221
runtime/bin/thread_absl.cc
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@ -0,0 +1,221 @@
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// Copyright (c) 2022, 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_USE_ABSL)
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#include <errno.h> // NOLINT
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#include <sys/resource.h> // NOLINT
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#include <sys/time.h> // NOLINT
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#include "bin/thread.h"
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#include "bin/thread_absl.h"
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#include "platform/assert.h"
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#include "platform/utils.h"
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namespace dart {
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namespace bin {
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#define VALIDATE_PTHREAD_RESULT(result) \
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if (result != 0) { \
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const int kBufferSize = 1024; \
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char error_buf[kBufferSize]; \
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FATAL2("pthread error: %d (%s)", result, \
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Utils::StrError(result, error_buf, kBufferSize)); \
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}
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#ifdef DEBUG
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#define RETURN_ON_PTHREAD_FAILURE(result) \
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if (result != 0) { \
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const int kBufferSize = 1024; \
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char error_buf[kBufferSize]; \
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fprintf(stderr, "%s:%d: pthread error: %d (%s)\n", __FILE__, __LINE__, \
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result, Utils::StrError(result, error_buf, kBufferSize)); \
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return result; \
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}
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#else
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#define RETURN_ON_PTHREAD_FAILURE(result) \
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if (result != 0) { \
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return result; \
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}
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#endif
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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 void* ThreadStart(void* data_ptr) {
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ThreadStartData* data = reinterpret_cast<ThreadStartData*>(data_ptr);
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const char* name = data->name();
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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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// Set the thread name. There is 16 bytes limit on the name (including \0).
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// pthread_setname_np ignores names that are too long rather than truncating.
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char truncated_name[16];
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snprintf(truncated_name, sizeof(truncated_name), "%s", name);
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pthread_setname_np(pthread_self(), truncated_name);
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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 NULL;
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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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pthread_attr_t attr;
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int result = pthread_attr_init(&attr);
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RETURN_ON_PTHREAD_FAILURE(result);
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result = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
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RETURN_ON_PTHREAD_FAILURE(result);
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result = pthread_attr_setstacksize(&attr, Thread::GetMaxStackSize());
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RETURN_ON_PTHREAD_FAILURE(result);
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ThreadStartData* data = new ThreadStartData(name, function, parameter);
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pthread_t tid;
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result = pthread_create(&tid, &attr, ThreadStart, data);
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RETURN_ON_PTHREAD_FAILURE(result);
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result = pthread_attr_destroy(&attr);
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RETURN_ON_PTHREAD_FAILURE(result);
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return 0;
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}
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const ThreadLocalKey Thread::kUnsetThreadLocalKey =
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static_cast<pthread_key_t>(-1);
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const ThreadId Thread::kInvalidThreadId = static_cast<ThreadId>(0);
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ThreadLocalKey Thread::CreateThreadLocal() {
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pthread_key_t key = kUnsetThreadLocalKey;
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int result = pthread_key_create(&key, NULL);
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VALIDATE_PTHREAD_RESULT(result);
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ASSERT(key != kUnsetThreadLocalKey);
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return key;
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}
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void Thread::DeleteThreadLocal(ThreadLocalKey key) {
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ASSERT(key != kUnsetThreadLocalKey);
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int result = pthread_key_delete(key);
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VALIDATE_PTHREAD_RESULT(result);
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}
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void Thread::SetThreadLocal(ThreadLocalKey key, uword value) {
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ASSERT(key != kUnsetThreadLocalKey);
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int result = pthread_setspecific(key, reinterpret_cast<void*>(value));
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VALIDATE_PTHREAD_RESULT(result);
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}
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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 pthread_self();
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}
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intptr_t Thread::ThreadIdToIntPtr(ThreadId id) {
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ASSERT(sizeof(id) == sizeof(intptr_t));
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return static_cast<intptr_t>(id);
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}
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bool Thread::Compare(ThreadId a, ThreadId b) {
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return (pthread_equal(a, b) != 0);
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}
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Mutex::Mutex() : data_() {}
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Mutex::~Mutex() {}
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ABSL_NO_THREAD_SAFETY_ANALYSIS
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void Mutex::Lock() {
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data_.mutex()->Lock();
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}
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ABSL_NO_THREAD_SAFETY_ANALYSIS
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bool Mutex::TryLock() {
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if (!data_.mutex()->TryLock()) {
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return false;
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}
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return true;
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}
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ABSL_NO_THREAD_SAFETY_ANALYSIS
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void Mutex::Unlock() {
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data_.mutex()->Unlock();
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}
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Monitor::Monitor() : data_() {}
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Monitor::~Monitor() {}
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ABSL_NO_THREAD_SAFETY_ANALYSIS
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void Monitor::Enter() {
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data_.mutex()->Lock();
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}
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ABSL_NO_THREAD_SAFETY_ANALYSIS
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void Monitor::Exit() {
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data_.mutex()->Unlock();
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}
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Monitor::WaitResult Monitor::Wait(int64_t millis) {
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return WaitMicros(millis * kMicrosecondsPerMillisecond);
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}
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ABSL_NO_THREAD_SAFETY_ANALYSIS
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Monitor::WaitResult Monitor::WaitMicros(int64_t micros) {
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Monitor::WaitResult retval = kNotified;
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if (micros == kNoTimeout) {
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// Wait forever.
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data_.cond()->Wait(data_.mutex());
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} else {
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if (data_.cond()->WaitWithTimeout(data_.mutex(),
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absl::Microseconds(micros))) {
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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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ABSL_NO_THREAD_SAFETY_ANALYSIS
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void Monitor::Notify() {
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data_.cond()->Signal();
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}
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ABSL_NO_THREAD_SAFETY_ANALYSIS
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void Monitor::NotifyAll() {
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data_.cond()->SignalAll();
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}
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} // namespace bin
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} // namespace dart
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#endif // defined(DART_USE_ABSL)
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76
runtime/bin/thread_absl.h
Normal file
76
runtime/bin/thread_absl.h
Normal file
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@ -0,0 +1,76 @@
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// Copyright (c) 2022, 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_BIN_THREAD_ABSL_H_
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#define RUNTIME_BIN_THREAD_ABSL_H_
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#if !defined(RUNTIME_BIN_THREAD_H_)
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#error Do not include thread_absl.h directly; use thread.h instead.
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#endif
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#include <pthread.h>
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#include "platform/assert.h"
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#include "platform/globals.h"
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#include "third_party/absl/synchronization/mutex.h"
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namespace dart {
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namespace bin {
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typedef pthread_key_t ThreadLocalKey;
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typedef pthread_t ThreadId;
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class ThreadInlineImpl {
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private:
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ThreadInlineImpl() {}
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~ThreadInlineImpl() {}
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static uword GetThreadLocal(ThreadLocalKey key) {
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static ThreadLocalKey kUnsetThreadLocalKey = static_cast<pthread_key_t>(-1);
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ASSERT(key != kUnsetThreadLocalKey);
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return reinterpret_cast<uword>(pthread_getspecific(key));
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}
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friend class Thread;
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DISALLOW_ALLOCATION();
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DISALLOW_COPY_AND_ASSIGN(ThreadInlineImpl);
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};
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class MutexData {
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private:
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MutexData() : mutex_() {}
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~MutexData() {}
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absl::Mutex* mutex() { return &mutex_; }
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absl::Mutex mutex_;
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friend class Mutex;
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DISALLOW_ALLOCATION();
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DISALLOW_COPY_AND_ASSIGN(MutexData);
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};
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class MonitorData {
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private:
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MonitorData() : mutex_(), cond_() {}
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~MonitorData() {}
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absl::Mutex* mutex() { return &mutex_; }
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absl::CondVar* cond() { return &cond_; }
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absl::Mutex mutex_;
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absl::CondVar cond_;
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friend class Monitor;
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DISALLOW_ALLOCATION();
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DISALLOW_COPY_AND_ASSIGN(MonitorData);
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};
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} // namespace bin
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} // namespace dart
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#endif // RUNTIME_BIN_THREAD_ABSL_H_
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@ -3,7 +3,7 @@
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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_ANDROID)
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#if defined(DART_HOST_OS_ANDROID) && !defined(DART_USE_ABSL)
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#include "bin/thread.h"
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#include "bin/thread_android.h"
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} // namespace bin
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} // namespace dart
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#endif // defined(DART_HOST_OS_ANDROID)
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#endif // defined(DART_HOST_OS_ANDROID) && !defined(DART_USE_ABSL)
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@ -3,7 +3,7 @@
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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_FUCHSIA)
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#if defined(DART_HOST_OS_FUCHSIA) && !defined(DART_USE_ABSL)
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#include "bin/thread.h"
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#include "bin/thread_fuchsia.h"
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@ -305,4 +305,4 @@ void Monitor::NotifyAll() {
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} // namespace bin
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} // namespace dart
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#endif // defined(DART_HOST_OS_FUCHSIA)
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#endif // defined(DART_HOST_OS_FUCHSIA) && !defined(DART_USE_ABSL)
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@ -3,7 +3,7 @@
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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_LINUX)
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#if defined(DART_HOST_OS_LINUX) && !defined(DART_USE_ABSL)
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#include "bin/thread.h"
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#include "bin/thread_linux.h"
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@ -304,4 +304,4 @@ void Monitor::NotifyAll() {
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} // namespace bin
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} // namespace dart
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#endif // defined(DART_HOST_OS_LINUX)
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#endif // defined(DART_HOST_OS_LINUX) && !defined(DART_USE_ABSL)
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@ -3,7 +3,7 @@
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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_MACOS)
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#if defined(DART_HOST_OS_MACOS) && !defined(DART_USE_ABSL)
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#include "bin/thread.h"
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#include "bin/thread_macos.h"
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@ -294,4 +294,4 @@ void Monitor::NotifyAll() {
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} // namespace bin
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} // namespace dart
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#endif // defined(DART_HOST_OS_MACOS)
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#endif // defined(DART_HOST_OS_MACOS) && !defined(DART_USE_ABSL)
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@ -3,7 +3,7 @@
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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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#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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@ -192,4 +192,4 @@ void Monitor::NotifyAll() {
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} // namespace bin
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} // namespace dart
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#endif // defined(DART_HOST_OS_WINDOWS)
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#endif // defined(DART_HOST_OS_WINDOWS) && !defined(DART_USE_ABSL)
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@ -64,6 +64,7 @@ final Set<String> excludedFiles = Set<String>.from([
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'runtime/bin/socket_base_linux.h',
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'runtime/bin/socket_base_macos.h',
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'runtime/bin/socket_base_win.h',
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'runtime/bin/thread_absl.h',
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'runtime/bin/thread_android.h',
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'runtime/bin/thread_fuchsia.h',
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'runtime/bin/thread_linux.h',
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|
@ -100,6 +101,7 @@ final Set<String> excludedFiles = Set<String>.from([
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'runtime/vm/instructions_ia32.h',
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'runtime/vm/instructions_riscv.h',
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'runtime/vm/instructions_x64.h',
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'runtime/vm/os_thread_absl.h',
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'runtime/vm/os_thread_android.h',
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'runtime/vm/os_thread_fuchsia.h',
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'runtime/vm/os_thread_linux.h',
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|
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@ -13,7 +13,9 @@
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#include "vm/globals.h"
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// Declare the OS-specific types ahead of defining the generic classes.
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#if defined(DART_HOST_OS_ANDROID)
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#if defined(DART_USE_ABSL)
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#include "vm/os_thread_absl.h"
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#elif defined(DART_HOST_OS_ANDROID)
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#include "vm/os_thread_android.h"
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#elif defined(DART_HOST_OS_FUCHSIA)
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#include "vm/os_thread_fuchsia.h"
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|
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417
runtime/vm/os_thread_absl.cc
Normal file
417
runtime/vm/os_thread_absl.cc
Normal file
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@ -0,0 +1,417 @@
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// Copyright (c) 2022, 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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||||
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#include "platform/globals.h" // NOLINT
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#if defined(DART_USE_ABSL)
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#include <errno.h> // NOLINT
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#include <stdio.h>
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#include <sys/resource.h> // NOLINT
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#include <sys/syscall.h> // NOLINT
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#include <sys/time.h> // NOLINT
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#include "platform/address_sanitizer.h"
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#include "platform/assert.h"
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#include "platform/safe_stack.h"
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#include "platform/signal_blocker.h"
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#include "platform/utils.h"
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#include "vm/flags.h"
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#include "vm/os_thread.h"
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namespace dart {
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DEFINE_FLAG(int,
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worker_thread_priority,
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kMinInt,
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"The thread priority the VM should use for new worker threads.");
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#define VALIDATE_PTHREAD_RESULT(result) \
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if (result != 0) { \
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const int kBufferSize = 1024; \
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char error_buf[kBufferSize]; \
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FATAL2("pthread error: %d (%s)", result, \
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Utils::StrError(result, error_buf, kBufferSize)); \
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}
|
||||
|
||||
// Variation of VALIDATE_PTHREAD_RESULT for named objects.
|
||||
#if defined(PRODUCT)
|
||||
#define VALIDATE_PTHREAD_RESULT_NAMED(result) VALIDATE_PTHREAD_RESULT(result)
|
||||
#else
|
||||
#define VALIDATE_PTHREAD_RESULT_NAMED(result) \
|
||||
if (result != 0) { \
|
||||
const int kBufferSize = 1024; \
|
||||
char error_buf[kBufferSize]; \
|
||||
FATAL3("[%s] pthread error: %d (%s)", name_, result, \
|
||||
Utils::StrError(result, error_buf, kBufferSize)); \
|
||||
}
|
||||
#endif
|
||||
|
||||
#if defined(DEBUG)
|
||||
#define ASSERT_PTHREAD_SUCCESS(result) VALIDATE_PTHREAD_RESULT(result)
|
||||
#else
|
||||
// NOTE: This (currently) expands to a no-op.
|
||||
#define ASSERT_PTHREAD_SUCCESS(result) ASSERT(result == 0)
|
||||
#endif
|
||||
|
||||
#ifdef DEBUG
|
||||
#define RETURN_ON_PTHREAD_FAILURE(result) \
|
||||
if (result != 0) { \
|
||||
const int kBufferSize = 1024; \
|
||||
char error_buf[kBufferSize]; \
|
||||
fprintf(stderr, "%s:%d: pthread error: %d (%s)\n", __FILE__, __LINE__, \
|
||||
result, Utils::StrError(result, error_buf, kBufferSize)); \
|
||||
return result; \
|
||||
}
|
||||
#else
|
||||
#define RETURN_ON_PTHREAD_FAILURE(result) \
|
||||
if (result != 0) return result;
|
||||
#endif
|
||||
|
||||
class ThreadStartData {
|
||||
public:
|
||||
ThreadStartData(const char* name,
|
||||
OSThread::ThreadStartFunction function,
|
||||
uword parameter)
|
||||
: name_(name), function_(function), parameter_(parameter) {}
|
||||
|
||||
const char* name() const { return name_; }
|
||||
OSThread::ThreadStartFunction function() const { return function_; }
|
||||
uword parameter() const { return parameter_; }
|
||||
|
||||
private:
|
||||
const char* name_;
|
||||
OSThread::ThreadStartFunction function_;
|
||||
uword parameter_;
|
||||
|
||||
DISALLOW_COPY_AND_ASSIGN(ThreadStartData);
|
||||
};
|
||||
|
||||
// TODO(bkonyi): remove this call once the prebuilt SDK is updated.
|
||||
// Spawned threads inherit their spawner's signal mask. We sometimes spawn
|
||||
// threads for running Dart code from a thread that is blocking SIGPROF.
|
||||
// This function explicitly unblocks SIGPROF so the profiler continues to
|
||||
// sample this thread.
|
||||
static void UnblockSIGPROF() {
|
||||
sigset_t set;
|
||||
sigemptyset(&set);
|
||||
sigaddset(&set, SIGPROF);
|
||||
int r = pthread_sigmask(SIG_UNBLOCK, &set, NULL);
|
||||
USE(r);
|
||||
ASSERT(r == 0);
|
||||
ASSERT(!CHECK_IS_BLOCKING(SIGPROF));
|
||||
}
|
||||
|
||||
// Dispatch to the thread start function provided by the caller. This trampoline
|
||||
// is used to ensure that the thread is properly destroyed if the thread just
|
||||
// exits.
|
||||
static void* ThreadStart(void* data_ptr) {
|
||||
if (FLAG_worker_thread_priority != kMinInt) {
|
||||
if (setpriority(PRIO_PROCESS, syscall(__NR_gettid),
|
||||
FLAG_worker_thread_priority) == -1) {
|
||||
FATAL2("Setting thread priority to %d failed: errno = %d\n",
|
||||
FLAG_worker_thread_priority, errno);
|
||||
}
|
||||
}
|
||||
|
||||
ThreadStartData* data = reinterpret_cast<ThreadStartData*>(data_ptr);
|
||||
|
||||
const char* name = data->name();
|
||||
OSThread::ThreadStartFunction function = data->function();
|
||||
uword parameter = data->parameter();
|
||||
delete data;
|
||||
|
||||
// Set the thread name. There is 16 bytes limit on the name (including \0).
|
||||
// pthread_setname_np ignores names that are too long rather than truncating.
|
||||
char truncated_name[16];
|
||||
snprintf(truncated_name, ARRAY_SIZE(truncated_name), "%s", name);
|
||||
pthread_setname_np(pthread_self(), truncated_name);
|
||||
|
||||
// Create new OSThread object and set as TLS for new thread.
|
||||
OSThread* thread = OSThread::CreateOSThread();
|
||||
if (thread != NULL) {
|
||||
OSThread::SetCurrent(thread);
|
||||
thread->set_name(name);
|
||||
UnblockSIGPROF();
|
||||
// Call the supplied thread start function handing it its parameters.
|
||||
function(parameter);
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
int OSThread::Start(const char* name,
|
||||
ThreadStartFunction function,
|
||||
uword parameter) {
|
||||
pthread_attr_t attr;
|
||||
int result = pthread_attr_init(&attr);
|
||||
RETURN_ON_PTHREAD_FAILURE(result);
|
||||
|
||||
result = pthread_attr_setstacksize(&attr, OSThread::GetMaxStackSize());
|
||||
RETURN_ON_PTHREAD_FAILURE(result);
|
||||
|
||||
ThreadStartData* data = new ThreadStartData(name, function, parameter);
|
||||
|
||||
pthread_t tid;
|
||||
result = pthread_create(&tid, &attr, ThreadStart, data);
|
||||
RETURN_ON_PTHREAD_FAILURE(result);
|
||||
|
||||
result = pthread_attr_destroy(&attr);
|
||||
RETURN_ON_PTHREAD_FAILURE(result);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
const ThreadId OSThread::kInvalidThreadId = static_cast<ThreadId>(0);
|
||||
const ThreadJoinId OSThread::kInvalidThreadJoinId =
|
||||
static_cast<ThreadJoinId>(0);
|
||||
|
||||
ThreadLocalKey OSThread::CreateThreadLocal(ThreadDestructor destructor) {
|
||||
pthread_key_t key = kUnsetThreadLocalKey;
|
||||
int result = pthread_key_create(&key, destructor);
|
||||
VALIDATE_PTHREAD_RESULT(result);
|
||||
ASSERT(key != kUnsetThreadLocalKey);
|
||||
return key;
|
||||
}
|
||||
|
||||
void OSThread::DeleteThreadLocal(ThreadLocalKey key) {
|
||||
ASSERT(key != kUnsetThreadLocalKey);
|
||||
int result = pthread_key_delete(key);
|
||||
VALIDATE_PTHREAD_RESULT(result);
|
||||
}
|
||||
|
||||
void OSThread::SetThreadLocal(ThreadLocalKey key, uword value) {
|
||||
ASSERT(key != kUnsetThreadLocalKey);
|
||||
int result = pthread_setspecific(key, reinterpret_cast<void*>(value));
|
||||
VALIDATE_PTHREAD_RESULT(result);
|
||||
}
|
||||
|
||||
intptr_t OSThread::GetMaxStackSize() {
|
||||
const int kStackSize = (128 * kWordSize * KB);
|
||||
return kStackSize;
|
||||
}
|
||||
|
||||
ThreadId OSThread::GetCurrentThreadId() {
|
||||
return pthread_self();
|
||||
}
|
||||
|
||||
#ifdef SUPPORT_TIMELINE
|
||||
ThreadId OSThread::GetCurrentThreadTraceId() {
|
||||
return syscall(__NR_gettid);
|
||||
}
|
||||
#endif // PRODUCT
|
||||
|
||||
ThreadJoinId OSThread::GetCurrentThreadJoinId(OSThread* thread) {
|
||||
ASSERT(thread != NULL);
|
||||
// Make sure we're filling in the join id for the current thread.
|
||||
ASSERT(thread->id() == GetCurrentThreadId());
|
||||
// Make sure the join_id_ hasn't been set, yet.
|
||||
DEBUG_ASSERT(thread->join_id_ == kInvalidThreadJoinId);
|
||||
pthread_t id = pthread_self();
|
||||
#if defined(DEBUG)
|
||||
thread->join_id_ = id;
|
||||
#endif
|
||||
return id;
|
||||
}
|
||||
|
||||
void OSThread::Join(ThreadJoinId id) {
|
||||
int result = pthread_join(id, NULL);
|
||||
ASSERT(result == 0);
|
||||
}
|
||||
|
||||
intptr_t OSThread::ThreadIdToIntPtr(ThreadId id) {
|
||||
ASSERT(sizeof(id) == sizeof(intptr_t));
|
||||
return static_cast<intptr_t>(id);
|
||||
}
|
||||
|
||||
ThreadId OSThread::ThreadIdFromIntPtr(intptr_t id) {
|
||||
return static_cast<ThreadId>(id);
|
||||
}
|
||||
|
||||
bool OSThread::Compare(ThreadId a, ThreadId b) {
|
||||
return pthread_equal(a, b) != 0;
|
||||
}
|
||||
|
||||
bool OSThread::GetCurrentStackBounds(uword* lower, uword* upper) {
|
||||
pthread_attr_t attr;
|
||||
// May fail on the main thread.
|
||||
if (pthread_getattr_np(pthread_self(), &attr) != 0) {
|
||||
return false;
|
||||
}
|
||||
|
||||
void* base;
|
||||
size_t size;
|
||||
int error = pthread_attr_getstack(&attr, &base, &size);
|
||||
pthread_attr_destroy(&attr);
|
||||
if (error != 0) {
|
||||
return false;
|
||||
}
|
||||
|
||||
*lower = reinterpret_cast<uword>(base);
|
||||
*upper = *lower + size;
|
||||
return true;
|
||||
}
|
||||
|
||||
#if defined(USING_SAFE_STACK)
|
||||
NO_SANITIZE_ADDRESS
|
||||
NO_SANITIZE_SAFE_STACK
|
||||
uword OSThread::GetCurrentSafestackPointer() {
|
||||
#error "SAFE_STACK is unsupported on this platform"
|
||||
return 0;
|
||||
}
|
||||
|
||||
NO_SANITIZE_ADDRESS
|
||||
NO_SANITIZE_SAFE_STACK
|
||||
void OSThread::SetCurrentSafestackPointer(uword ssp) {
|
||||
#error "SAFE_STACK is unsupported on this platform"
|
||||
}
|
||||
#endif
|
||||
|
||||
Mutex::Mutex(NOT_IN_PRODUCT(const char* name))
|
||||
#if !defined(PRODUCT)
|
||||
: name_(name)
|
||||
#endif
|
||||
{
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
owner_ = OSThread::kInvalidThreadId;
|
||||
#endif // defined(DEBUG)
|
||||
}
|
||||
|
||||
Mutex::~Mutex() {
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
ASSERT(owner_ == OSThread::kInvalidThreadId);
|
||||
#endif // defined(DEBUG)
|
||||
}
|
||||
|
||||
ABSL_NO_THREAD_SAFETY_ANALYSIS
|
||||
void Mutex::Lock() {
|
||||
data_.mutex()->Lock();
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
owner_ = OSThread::GetCurrentThreadId();
|
||||
#endif // defined(DEBUG)
|
||||
}
|
||||
|
||||
ABSL_NO_THREAD_SAFETY_ANALYSIS
|
||||
bool Mutex::TryLock() {
|
||||
if (!data_.mutex()->TryLock()) {
|
||||
return false;
|
||||
}
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
owner_ = OSThread::GetCurrentThreadId();
|
||||
#endif // defined(DEBUG)
|
||||
return true;
|
||||
}
|
||||
|
||||
ABSL_NO_THREAD_SAFETY_ANALYSIS
|
||||
void Mutex::Unlock() {
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
ASSERT(IsOwnedByCurrentThread());
|
||||
owner_ = OSThread::kInvalidThreadId;
|
||||
#endif // defined(DEBUG)
|
||||
data_.mutex()->Unlock();
|
||||
}
|
||||
|
||||
Monitor::Monitor() {
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
owner_ = OSThread::kInvalidThreadId;
|
||||
#endif // defined(DEBUG)
|
||||
}
|
||||
|
||||
Monitor::~Monitor() {
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
ASSERT(owner_ == OSThread::kInvalidThreadId);
|
||||
#endif // defined(DEBUG)
|
||||
}
|
||||
|
||||
ABSL_NO_THREAD_SAFETY_ANALYSIS
|
||||
bool Monitor::TryEnter() {
|
||||
if (!data_.mutex()->TryLock()) {
|
||||
return false;
|
||||
}
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
ASSERT(owner_ == OSThread::kInvalidThreadId);
|
||||
owner_ = OSThread::GetCurrentThreadId();
|
||||
#endif // defined(DEBUG)
|
||||
return true;
|
||||
}
|
||||
|
||||
ABSL_NO_THREAD_SAFETY_ANALYSIS
|
||||
void Monitor::Enter() {
|
||||
data_.mutex()->Lock();
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
ASSERT(owner_ == OSThread::kInvalidThreadId);
|
||||
owner_ = OSThread::GetCurrentThreadId();
|
||||
#endif // defined(DEBUG)
|
||||
}
|
||||
|
||||
ABSL_NO_THREAD_SAFETY_ANALYSIS
|
||||
void Monitor::Exit() {
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
ASSERT(IsOwnedByCurrentThread());
|
||||
owner_ = OSThread::kInvalidThreadId;
|
||||
#endif // defined(DEBUG)
|
||||
data_.mutex()->Unlock();
|
||||
}
|
||||
|
||||
Monitor::WaitResult Monitor::Wait(int64_t millis) {
|
||||
Monitor::WaitResult retval = WaitMicros(millis * kMicrosecondsPerMillisecond);
|
||||
return retval;
|
||||
}
|
||||
|
||||
ABSL_NO_THREAD_SAFETY_ANALYSIS
|
||||
Monitor::WaitResult Monitor::WaitMicros(int64_t micros) {
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
ASSERT(IsOwnedByCurrentThread());
|
||||
ThreadId saved_owner = owner_;
|
||||
owner_ = OSThread::kInvalidThreadId;
|
||||
#endif // defined(DEBUG)
|
||||
|
||||
Monitor::WaitResult retval = kNotified;
|
||||
if (micros == kNoTimeout) {
|
||||
// Wait forever.
|
||||
data_.cond()->Wait(data_.mutex());
|
||||
} else {
|
||||
if (data_.cond()->WaitWithTimeout(data_.mutex(),
|
||||
absl::Microseconds(micros))) {
|
||||
retval = kTimedOut;
|
||||
}
|
||||
}
|
||||
|
||||
#if defined(DEBUG)
|
||||
// When running with assertions enabled we track the owner.
|
||||
ASSERT(owner_ == OSThread::kInvalidThreadId);
|
||||
owner_ = OSThread::GetCurrentThreadId();
|
||||
ASSERT(owner_ == saved_owner);
|
||||
#endif // defined(DEBUG)
|
||||
return retval;
|
||||
}
|
||||
|
||||
ABSL_NO_THREAD_SAFETY_ANALYSIS
|
||||
void Monitor::Notify() {
|
||||
// When running with assertions enabled we track the owner.
|
||||
ASSERT(IsOwnedByCurrentThread());
|
||||
data_.cond()->Signal();
|
||||
}
|
||||
|
||||
ABSL_NO_THREAD_SAFETY_ANALYSIS
|
||||
void Monitor::NotifyAll() {
|
||||
// When running with assertions enabled we track the owner.
|
||||
ASSERT(IsOwnedByCurrentThread());
|
||||
xdata_.cond()->SignalAll();
|
||||
}
|
||||
|
||||
} // namespace dart
|
||||
|
||||
#endif // defined(DART_USE_ABSL)
|
77
runtime/vm/os_thread_absl.h
Normal file
77
runtime/vm/os_thread_absl.h
Normal file
|
@ -0,0 +1,77 @@
|
|||
// Copyright (c) 2022, the Dart project authors. Please see the AUTHORS file
|
||||
// for details. All rights reserved. Use of this source code is governed by a
|
||||
// BSD-style license that can be found in the LICENSE file.
|
||||
|
||||
#ifndef RUNTIME_VM_OS_THREAD_ABSL_H_
|
||||
#define RUNTIME_VM_OS_THREAD_ABSL_H_
|
||||
|
||||
#if !defined(RUNTIME_VM_OS_THREAD_H_)
|
||||
#error Do not include os_thread_absl.h directly; use os_thread.h instead.
|
||||
#endif
|
||||
|
||||
#include <pthread.h>
|
||||
|
||||
#include "platform/assert.h"
|
||||
#include "platform/globals.h"
|
||||
#include "third_party/absl/synchronization/mutex.h"
|
||||
|
||||
namespace dart {
|
||||
|
||||
typedef pthread_key_t ThreadLocalKey;
|
||||
typedef pthread_t ThreadId;
|
||||
typedef pthread_t ThreadJoinId;
|
||||
|
||||
static const ThreadLocalKey kUnsetThreadLocalKey =
|
||||
static_cast<pthread_key_t>(-1);
|
||||
|
||||
class ThreadInlineImpl {
|
||||
private:
|
||||
ThreadInlineImpl() {}
|
||||
~ThreadInlineImpl() {}
|
||||
|
||||
static uword GetThreadLocal(ThreadLocalKey key) {
|
||||
ASSERT(key != kUnsetThreadLocalKey);
|
||||
return reinterpret_cast<uword>(pthread_getspecific(key));
|
||||
}
|
||||
|
||||
friend class OSThread;
|
||||
|
||||
DISALLOW_ALLOCATION();
|
||||
DISALLOW_COPY_AND_ASSIGN(ThreadInlineImpl);
|
||||
};
|
||||
|
||||
class MutexData {
|
||||
private:
|
||||
MutexData() : mutex_() {}
|
||||
~MutexData() {}
|
||||
|
||||
absl::Mutex* mutex() { return &mutex_; }
|
||||
|
||||
absl::Mutex mutex_;
|
||||
|
||||
friend class Mutex;
|
||||
|
||||
DISALLOW_ALLOCATION();
|
||||
DISALLOW_COPY_AND_ASSIGN(MutexData);
|
||||
};
|
||||
|
||||
class MonitorData {
|
||||
private:
|
||||
MonitorData() : mutex_(), cond_() {}
|
||||
~MonitorData() {}
|
||||
|
||||
absl::Mutex* mutex() { return &mutex_; }
|
||||
absl::CondVar* cond() { return &cond_; }
|
||||
|
||||
absl::Mutex mutex_;
|
||||
absl::CondVar cond_;
|
||||
|
||||
friend class Monitor;
|
||||
|
||||
DISALLOW_ALLOCATION();
|
||||
DISALLOW_COPY_AND_ASSIGN(MonitorData);
|
||||
};
|
||||
|
||||
} // namespace dart
|
||||
|
||||
#endif // RUNTIME_VM_OS_THREAD_ABSL_H_
|
|
@ -4,7 +4,7 @@
|
|||
|
||||
#include "platform/globals.h" // NOLINT
|
||||
|
||||
#if defined(DART_HOST_OS_ANDROID)
|
||||
#if defined(DART_HOST_OS_ANDROID) && !defined(DART_USE_ABSL)
|
||||
|
||||
#include "vm/os_thread.h"
|
||||
|
||||
|
@ -491,4 +491,4 @@ void Monitor::NotifyAll() {
|
|||
|
||||
} // namespace dart
|
||||
|
||||
#endif // defined(DART_HOST_OS_ANDROID)
|
||||
#endif // defined(DART_HOST_OS_ANDROID) && !defined(DART_USE_ABSL)
|
||||
|
|
|
@ -3,7 +3,7 @@
|
|||
// BSD-style license that can be found in the LICENSE file.
|
||||
|
||||
#include "platform/globals.h" // NOLINT
|
||||
#if defined(DART_HOST_OS_FUCHSIA)
|
||||
#if defined(DART_HOST_OS_FUCHSIA) && !defined(DART_USE_ABSL)
|
||||
|
||||
#include "vm/os.h"
|
||||
#include "vm/os_thread.h"
|
||||
|
@ -492,4 +492,4 @@ void Monitor::NotifyAll() {
|
|||
|
||||
} // namespace dart
|
||||
|
||||
#endif // defined(DART_HOST_OS_FUCHSIA)
|
||||
#endif // defined(DART_HOST_OS_FUCHSIA) && !defined(DART_USE_ABSL)
|
||||
|
|
|
@ -4,7 +4,7 @@
|
|||
|
||||
#include "platform/globals.h" // NOLINT
|
||||
|
||||
#if defined(DART_HOST_OS_LINUX)
|
||||
#if defined(DART_HOST_OS_LINUX) && !defined(DART_USE_ABSL)
|
||||
|
||||
#include "vm/os_thread.h"
|
||||
|
||||
|
@ -497,4 +497,4 @@ void Monitor::NotifyAll() {
|
|||
|
||||
} // namespace dart
|
||||
|
||||
#endif // defined(DART_HOST_OS_LINUX)
|
||||
#endif // defined(DART_HOST_OS_LINUX) && !defined(DART_USE_ABSL)
|
||||
|
|
|
@ -3,7 +3,7 @@
|
|||
// BSD-style license that can be found in the LICENSE file.
|
||||
|
||||
#include "platform/globals.h" // NOLINT
|
||||
#if defined(DART_HOST_OS_MACOS)
|
||||
#if defined(DART_HOST_OS_MACOS) && !defined(DART_USE_ABSL)
|
||||
|
||||
#include "vm/os_thread.h"
|
||||
|
||||
|
|
|
@ -3,7 +3,7 @@
|
|||
// BSD-style license that can be found in the LICENSE file.
|
||||
|
||||
#include "platform/globals.h" // NOLINT
|
||||
#if defined(DART_HOST_OS_WINDOWS)
|
||||
#if defined(DART_HOST_OS_WINDOWS) && !defined(DART_USE_ABSL)
|
||||
|
||||
#include "vm/growable_array.h"
|
||||
#include "vm/lockers.h"
|
||||
|
@ -530,4 +530,4 @@ PIMAGE_TLS_CALLBACK p_thread_callback_dart = OnDartThreadExit;
|
|||
#endif // _WIN64
|
||||
} // extern "C"
|
||||
|
||||
#endif // defined(DART_HOST_OS_WINDOWS)
|
||||
#endif // defined(DART_HOST_OS_WINDOWS) && !defined(DART_USE_ABSL)
|
||||
|
|
|
@ -210,6 +210,8 @@ vm_sources = [
|
|||
"os_macos.cc",
|
||||
"os_thread.cc",
|
||||
"os_thread.h",
|
||||
"os_thread_absl.cc",
|
||||
"os_thread_absl.h",
|
||||
"os_thread_android.cc",
|
||||
"os_thread_android.h",
|
||||
"os_thread_fuchsia.cc",
|
||||
|
|
Loading…
Reference in a new issue