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authorIsaac Chen <isaacchen@isaacchen.cn>2018-07-13 10:12:35 +0800
committerIsaac Chen <isaacchen@isaacchen.cn>2018-07-13 00:03:17 +0000
commit6a15b2379f90ba4f9222fea0a5f8c12e8cecbae5 (patch)
tree6b1789235069c986567127aa57a51bbe4122e5ee /gps/utils/LocThread.h
parent71ad0c9e5399aba0ac3cd20f1df41c9757cd6ca5 (diff)
wayne: Import GPS
* QC Tag: LA.UM.6.2.r1-06100-sdm660.0 Change-Id: I26da3b90caa473ed5f88408627463ec7f7655f23 Signed-off-by: Isaac Chen <isaacchen@isaacchen.cn>
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+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * * Neither the name of The Linux Foundation, nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef __LOC_THREAD__
+#define __LOC_THREAD__
+
+#include <stddef.h>
+#include <pthread.h>
+
+// abstract class to be implemented by client to provide a runnable class
+// which gets scheduled by LocThread
+class LocRunnable {
+public:
+ inline LocRunnable() {}
+ inline virtual ~LocRunnable() {}
+
+ // The method to be implemented by thread clients
+ // and be scheduled by LocThread
+ // This method will be repeated called until it returns false; or
+ // until thread is stopped.
+ virtual bool run() = 0;
+
+ // The method to be run before thread loop (conditionally repeatedly)
+ // calls run()
+ inline virtual void prerun() {}
+
+ // The method to be run after thread loop (conditionally repeatedly)
+ // calls run()
+ inline virtual void postrun() {}
+};
+
+// opaque class to provide service implementation.
+class LocThreadDelegate;
+
+// A utility class to create a thread and run LocRunnable
+// caller passes in.
+class LocThread {
+ LocThreadDelegate* mThread;
+public:
+ inline LocThread() : mThread(NULL) {}
+ virtual ~LocThread();
+
+ typedef pthread_t (*tCreate)(const char* name, void* (*start)(void*), void* arg);
+ // client starts thread with a runnable, which implements
+ // the logics to fun in the created thread context.
+ // The thread could be either joinable or detached.
+ // runnable is an obj managed by client. Client creates and
+ // frees it (but must be after stop() is called, or
+ // this LocThread obj is deleted).
+ // The obj will be deleted by LocThread if start()
+ // returns true. Else it is client's responsibility
+ // to delete the object
+ // Returns 0 if success; false if failure.
+ bool start(tCreate creator, const char* threadName, LocRunnable* runnable, bool joinable = true);
+ inline bool start(const char* threadName, LocRunnable* runnable, bool joinable = true) {
+ return start(NULL, threadName, runnable, joinable);
+ }
+
+ // NOTE: if this is a joinable thread, this stop may block
+ // for a while until the thread is joined.
+ void stop();
+
+ // thread status check
+ inline bool isRunning() { return NULL != mThread; }
+};
+
+#endif //__LOC_THREAD__