38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
// Copyright 2017 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// This file is a Win32-specific part of spinlock_wait.cc
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#include <windows.h>
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#include <atomic>
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#include "absl/base/internal/scheduling_mode.h"
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extern "C" {
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void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockDelay)(
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std::atomic<uint32_t>* /* lock_word */, uint32_t /* value */, int loop,
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absl::base_internal::SchedulingMode /* mode */) {
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if (loop == 0) {
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} else if (loop == 1) {
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Sleep(0);
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} else {
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Sleep(absl::base_internal::SpinLockSuggestedDelayNS(loop) / 1000000);
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}
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}
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void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockWake)(
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std::atomic<uint32_t>* /* lock_word */, bool /* all */) {}
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} // extern "C"
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