Import Mbed OS hard-float snapshot

drivers/source/Timeout.cpp

@@ -0,0 +1,62 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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
+ *
+ *     http://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 "drivers/Timeout.h"
+#include "drivers/LowPowerTimeout.h"
+#include "drivers/HighResClock.h"
+#include "drivers/LowPowerClock.h"
+#include "drivers/RealTimeClock.h"
+
+using namespace std::chrono;
+
+namespace mbed {
+
+void TimeoutBase::handler()
+{
+    if (_function) {
+        Callback<void()> function_to_call = _function;
+        // Clean up state to "detached" before calling callback; it may attach
+        // a new callback. Equivalent to detach(), but skips the remove();
+        // it's unnecessary because we're in the ticker's handler.
+        _function = nullptr;
+        if (_lock_deepsleep) {
+            sleep_manager_unlock_deep_sleep();
+        }
+        function_to_call();
+    }
+}
+
+Timeout::Timeout() : TimeoutBase(get_us_ticker_data(), true)
+{
+}
+
+#if DEVICE_LPTICKER
+LowPowerTimeout::LowPowerTimeout() : TimeoutBase(get_lp_ticker_data(), false)
+{
+}
+#endif
+
+/* A few miscellaneous out-of-line static members from various related classes,
+ * just to save them getting needing their own cpp file for one line.
+ * (In C++17 could avoid the need for this by making the members inline).
+ */
+const bool HighResClock::is_steady;
+#if DEVICE_LPTICKER
+const bool LowPowerClock::is_steady;
+#endif
+const bool RealTimeClock::is_steady;
+
+} // namespace mbed