1 // Copyright 2020 The Pigweed Authors
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
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, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
15 #include "pw_sync/counting_semaphore.h"
17 using pw::chrono::SystemClock;
19 extern "C" void pw_sync_CountingSemaphore_Release(
20 pw_sync_CountingSemaphore* semaphore) {
24 extern "C" void pw_sync_CountingSemaphore_ReleaseNum(
25 pw_sync_CountingSemaphore* semaphore, ptrdiff_t update) {
26 semaphore->release(update);
29 extern "C" void pw_sync_CountingSemaphore_Acquire(
30 pw_sync_CountingSemaphore* semaphore) {
34 extern "C" bool pw_sync_CountingSemaphore_TryAcquire(
35 pw_sync_CountingSemaphore* semaphore) {
36 return semaphore->try_acquire();
39 extern "C" bool pw_sync_CountingSemaphore_TryAcquireFor(
40 pw_sync_CountingSemaphore* semaphore,
41 pw_chrono_SystemClock_Duration for_at_least) {
42 return semaphore->try_acquire_for(SystemClock::duration(for_at_least.ticks));
45 extern "C" bool pw_sync_CountingSemaphore_TryAcquireUntil(
46 pw_sync_CountingSemaphore* semaphore,
47 pw_chrono_SystemClock_TimePoint until_at_least) {
48 return semaphore->try_acquire_until(SystemClock::time_point(
49 SystemClock::duration(until_at_least.duration_since_epoch.ticks)));
52 extern "C" ptrdiff_t pw_sync_CountingSemaphore_Max(void) {
53 return pw::sync::CountingSemaphore::max();