Diff: drivers/internal/PolledQueue.h

Revision:

1:9db0e321a9f4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/drivers/internal/PolledQueue.h	Tue Dec 31 06:02:27 2019 +0000
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2018-2019, Arm Limited and affiliates.
+ * 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.
+ */
+
+#ifndef POLLED_QUEUE_H
+#define POLLED_QUEUE_H
+
+#include "drivers/internal/TaskQueue.h"
+#include "platform/Callback.h"
+#include "LinkedList.h"
+namespace events {
+/**
+ * \defgroup drivers_PolledQueue PolledQueue class
+ * \ingroup drivers-internal-api-usb
+ * @{
+ */
+
+/** PolledQueue
+ *
+ * This class is an implementation of TaskQueue which is
+ * processed synchronously by calls to dispatch.
+ */
+class PolledQueue: public TaskQueue {
+public:
+
+    /** Create a PolledQueue
+     *
+     *  Create an event queue.
+     *
+     *  @param cb Callback called when dispatch needs to be called
+     */
+    PolledQueue(mbed::Callback<void()> cb = NULL);
+
+    virtual ~PolledQueue();
+
+    virtual void post(TaskBase *event);
+
+    virtual void cancel(TaskBase *event);
+
+    /**
+     * Process all the events in this queue
+     */
+    void dispatch();
+
+    /**
+     * Attach a callback indicating that this queue needs to be processed
+     *
+     * @param cb Callback called when dispatch needs to be called
+     */
+    void attach(mbed::Callback<void()> cb);
+
+protected:
+
+    mbed::Callback<void()> _cb;
+    LinkedList<TaskBase> _list;
+
+};
+
+/** @}*/
+
+}
+#endif