67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
// Copyright 2018 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/threading/platform_thread.h"
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#include "base/task/current_thread.h"
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#include "third_party/abseil-cpp/absl/base/attributes.h"
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#if BUILDFLAG(IS_FUCHSIA)
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#include "base/fuchsia/scheduler.h"
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#endif
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namespace base {
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namespace {
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ABSL_CONST_INIT thread_local ThreadType current_thread_type =
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ThreadType::kDefault;
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} // namespace
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// static
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void PlatformThread::SetCurrentThreadType(ThreadType thread_type) {
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MessagePumpType message_pump_type = MessagePumpType::DEFAULT;
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if (CurrentIOThread::IsSet()) {
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message_pump_type = MessagePumpType::IO;
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}
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#if !BUILDFLAG(IS_NACL)
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else if (CurrentUIThread::IsSet()) {
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message_pump_type = MessagePumpType::UI;
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}
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#endif
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internal::SetCurrentThreadType(thread_type, message_pump_type);
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}
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// static
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ThreadType PlatformThread::GetCurrentThreadType() {
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return current_thread_type;
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}
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// static
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absl::optional<TimeDelta> PlatformThread::GetThreadLeewayOverride() {
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#if BUILDFLAG(IS_FUCHSIA)
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// On Fuchsia, all audio threads run with the CPU scheduling profile that uses
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// an interval of |kAudioSchedulingPeriod|. Using the default leeway may lead
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// to some tasks posted to audio threads to be executed too late (see
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// http://crbug.com/1368858).
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if (GetCurrentThreadType() == ThreadType::kRealtimeAudio)
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return kAudioSchedulingPeriod;
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#endif
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return absl::nullopt;
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}
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namespace internal {
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void SetCurrentThreadType(ThreadType thread_type,
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MessagePumpType pump_type_hint) {
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CHECK_LE(thread_type, ThreadType::kMaxValue);
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SetCurrentThreadTypeImpl(thread_type, pump_type_hint);
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current_thread_type = thread_type;
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}
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} // namespace internal
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} // namespace base
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