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