2020-11-09 20:46:52 +00:00
|
|
|
// Copyright 2020 The Pigweed 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.
|
|
|
|
|
|
|
|
#include "pw_sync/binary_semaphore.h"
|
|
|
|
|
|
|
|
using pw::chrono::SystemClock;
|
|
|
|
|
|
|
|
extern "C" void pw_sync_BinarySemaphore_Release(
|
|
|
|
pw_sync_BinarySemaphore* semaphore) {
|
|
|
|
semaphore->release();
|
|
|
|
}
|
|
|
|
|
|
|
|
extern "C" void pw_sync_BinarySemaphore_Acquire(
|
|
|
|
pw_sync_BinarySemaphore* semaphore) {
|
|
|
|
semaphore->acquire();
|
|
|
|
}
|
|
|
|
|
|
|
|
extern "C" bool pw_sync_BinarySemaphore_TryAcquire(
|
|
|
|
pw_sync_BinarySemaphore* semaphore) {
|
|
|
|
return semaphore->try_acquire();
|
|
|
|
}
|
|
|
|
|
|
|
|
extern "C" bool pw_sync_BinarySemaphore_TryAcquireFor(
|
|
|
|
pw_sync_BinarySemaphore* semaphore,
|
pw_chrono: Improve SystemClock C API
Changes the SystemClock C Api to:
1) Use a pw_chrono_SystemClock_Duration struct instead of aliasing
an int64_t under pw_chrono_SystemClock_TickCount which could
accidentally permit direct tick usage.
2) Add PW_SYSTEM_CLOCK_{MS,S,MIN,H} and
PW_SYSTEM_CLOCK_{MS,S,MIN,H}_CEIL to permit C API users to
create durations which round up to the nearest tick for deadlines
and timeouts, mirroring std::chrono::ceil.
3) Add PW_SYSTEM_CLOCK_{MS,S,MIN,H}_FLOOR to permit C API users to
create durations which round down to the nearest tick for oddball
corner cases, mirroring std::chrono::floor.
4) In order to enable said macros, the system_clock_config.h backend
config was changed to require the clock period as a preprocessor
defines instead of a std::ratio<>.
5) Renames pw_chrono_SystemClock_TimeDelta to
pw_chrono_SystemClock_TimeElapsed to make the argument ordering
make more sense.
6) Changes existing std::chrono::duration_cast usage to
std::chrono::ceil and std::chrono:floor to set a good example
to be explicit on rounding.
7) Renames pw_chrono_SystemClock_TickCountsToNsTruncate accordingly to
pw_chrono_SystemClock_DurationToNsFloor.
Requires: pigweed-internal:9340
Change-Id: Ia628dceac53f964eda7c4aacd3d790b8b0e92207
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/31280
Commit-Queue: Ewout van Bekkum <ewout@google.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
2021-01-29 02:58:03 +00:00
|
|
|
pw_chrono_SystemClock_Duration for_at_least) {
|
|
|
|
return semaphore->try_acquire_for(SystemClock::duration(for_at_least.ticks));
|
2020-11-09 20:46:52 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
extern "C" bool pw_sync_BinarySemaphore_TryAcquireUntil(
|
|
|
|
pw_sync_BinarySemaphore* semaphore,
|
|
|
|
pw_chrono_SystemClock_TimePoint until_at_least) {
|
|
|
|
return semaphore->try_acquire_until(SystemClock::time_point(
|
pw_chrono: Improve SystemClock C API
Changes the SystemClock C Api to:
1) Use a pw_chrono_SystemClock_Duration struct instead of aliasing
an int64_t under pw_chrono_SystemClock_TickCount which could
accidentally permit direct tick usage.
2) Add PW_SYSTEM_CLOCK_{MS,S,MIN,H} and
PW_SYSTEM_CLOCK_{MS,S,MIN,H}_CEIL to permit C API users to
create durations which round up to the nearest tick for deadlines
and timeouts, mirroring std::chrono::ceil.
3) Add PW_SYSTEM_CLOCK_{MS,S,MIN,H}_FLOOR to permit C API users to
create durations which round down to the nearest tick for oddball
corner cases, mirroring std::chrono::floor.
4) In order to enable said macros, the system_clock_config.h backend
config was changed to require the clock period as a preprocessor
defines instead of a std::ratio<>.
5) Renames pw_chrono_SystemClock_TimeDelta to
pw_chrono_SystemClock_TimeElapsed to make the argument ordering
make more sense.
6) Changes existing std::chrono::duration_cast usage to
std::chrono::ceil and std::chrono:floor to set a good example
to be explicit on rounding.
7) Renames pw_chrono_SystemClock_TickCountsToNsTruncate accordingly to
pw_chrono_SystemClock_DurationToNsFloor.
Requires: pigweed-internal:9340
Change-Id: Ia628dceac53f964eda7c4aacd3d790b8b0e92207
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/31280
Commit-Queue: Ewout van Bekkum <ewout@google.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
2021-01-29 02:58:03 +00:00
|
|
|
SystemClock::duration(until_at_least.duration_since_epoch.ticks)));
|
2020-11-09 20:46:52 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
extern "C" ptrdiff_t pw_sync_BinarySemaphore_Max(void) {
|
|
|
|
return pw::sync::BinarySemaphore::max();
|
|
|
|
}
|