pw_sync: Adds semaphores & mutexes
Adds the BinarySemaphore, CountingSemaphore, and Mutex to the
pw_sync module along with an STL backend for each.
Change-Id: I54a3a64e702202a319ed2c9068bf37412d3fd240
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/24241
Reviewed-by: Ewout van Bekkum <ewout@google.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
Reviewed-by: Keir Mierle <keir@google.com>
Commit-Queue: Ewout van Bekkum <ewout@google.com>
diff --git a/pw_sync/mutex_facade_test_c.c b/pw_sync/mutex_facade_test_c.c
new file mode 100644
index 0000000..9004912
--- /dev/null
+++ b/pw_sync/mutex_facade_test_c.c
@@ -0,0 +1,40 @@
+// 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.
+
+// These tests call the pw_sync module mutex API from C. The return values are
+// checked in the main C++ tests.
+
+#include <stdbool.h>
+
+#include "pw_sync/mutex.h"
+
+void pw_sync_Mutex_CallLock(pw_sync_Mutex* mutex) { pw_sync_Mutex_Lock(mutex); }
+
+bool pw_sync_Mutex_CallTryLock(pw_sync_Mutex* mutex) {
+ return pw_sync_Mutex_TryLock(mutex);
+}
+
+bool pw_sync_Mutex_CallTryLockFor(
+ pw_sync_Mutex* mutex, pw_chrono_SystemClock_TickCount for_at_least) {
+ return pw_sync_Mutex_TryLockFor(mutex, for_at_least);
+}
+
+bool pw_sync_Mutex_CallTryLockUntil(
+ pw_sync_Mutex* mutex, pw_chrono_SystemClock_TimePoint until_at_least) {
+ return pw_sync_Mutex_TryLockUntil(mutex, until_at_least);
+}
+
+void pw_sync_Mutex_CallUnlock(pw_sync_Mutex* mutex) {
+ pw_sync_Mutex_Unlock(mutex);
+}