1 // Copyright 2017 The Abseil Authors.
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
7 // https://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
15 // This file is a Posix-specific part of spinlock_wait.cc
22 #include "absl/base/internal/scheduling_mode.h"
23 #include "absl/base/port.h"
27 ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockDelay(
28 std::atomic<uint32_t>* /* lock_word */, uint32_t /* value */, int loop,
29 absl::base_internal::SchedulingMode /* mode */) {
30 int save_errno = errno;
32 } else if (loop == 1) {
37 tm.tv_nsec = absl::base_internal::SpinLockSuggestedDelayNS(loop);
38 nanosleep(&tm, nullptr);
43 ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockWake(
44 std::atomic<uint32_t>* /* lock_word */, bool /* all */) {}