1 files changed, 59 insertions, 0 deletions
diff --git a/pw_thread/public/pw_thread/sleep.h b/pw_thread/public/pw_thread/sleep.h
new file mode 100644
index 000000000..4e1fb4842
--- /dev/null
+++ b/pw_thread/public/pw_thread/sleep.h
@@ -0,0 +1,59 @@
+// 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.
+#pragma once
+
+#include "pw_chrono/system_clock.h"
+#include "pw_preprocessor/util.h"
+
+#ifdef __cplusplus
+
+namespace pw::this_thread {
+
+// Blocks the execution of the current thread for at least the specified
+// duration. This function may block for longer due to scheduling or resource
+// contention delays.
+//
+// A sleep duration of 0 will at minimum yield, meaning it will provide a hint
+// to the implementation to reschedule the execution of threads, allowing other
+// threads to run.
+//
+// This can only be called from a thread, meaning the scheduler is running.
+void sleep_for(chrono::SystemClock::duration for_at_least);
+
+// Blocks the execution of the current thread until at least the specified
+// deadline. This function may block for longer due to scheduling or resource
+// contention delays.
+//
+// A sleep deadline in the past up to the current time will at minimum yield
+// meaning it will provide a hint to the implementation to reschedule the
+// execution of threads, allowing other threads to run.
+//
+// This can only be called from a thread, meaning the scheduler is running.
+void sleep_until(chrono::SystemClock::time_point until_at_least);
+
+}  // namespace pw::this_thread
+
+// The backend can opt to include inlined implementations.
+#if __has_include("pw_thread_backend/sleep_inline.h")
+#include "pw_thread_backend/sleep_inline.h"
+#endif  // __has_include("pw_thread_backend/sleep_inline.h")
+
+#endif  // __cplusplus
+
+PW_EXTERN_C_START
+
+void pw_this_thread_SleepFor(pw_chrono_SystemClock_Duration for_at_least);
+void pw_this_thread_SleepUntil(pw_chrono_SystemClock_TimePoint until_at_least);
+
+PW_EXTERN_C_END