/*
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* Copyright 2018 Rockchip Electronics Co. LTD
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* author: martin.cheng@rock-chips.com
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* date: 20180719
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*/
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#include "rt_header.h" // NOLINT
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#ifndef INCLUDE_RT_BASE_RT_MUTEX_H_
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#define INCLUDE_RT_BASE_RT_MUTEX_H_
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#define RET_CHECK_REF(ref, ret) \
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do { \
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if (ref->isExited()) \
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return ret; \
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} while (0)
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typedef void *(*RTPthreadCallback)(void *);
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class RtMutex;
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class RtCondition;
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/*
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* for shorter type name and function name
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*/
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class RtMutex {
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public:
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RtMutex();
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~RtMutex();
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void lock();
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void unlock();
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int trylock();
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class RtAutolock {
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public:
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explicit inline RtAutolock(RtMutex& rtMutex) // NOLINT
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: mLock(rtMutex) {
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mLock.lock();
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}
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explicit inline RtAutolock(RtMutex* rtMutex)
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: mLock(*rtMutex) {
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mLock.lock();
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}
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inline ~RtAutolock() { mLock.unlock(); }
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private:
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RtMutex& mLock;
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};
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private:
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friend class RtCondition;
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void* mData;
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RtMutex(const RtMutex &);
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RtMutex &operator = (const RtMutex&);
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};
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typedef RtMutex::RtAutolock RtAutoMutex;
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/*
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* for shorter type name and function name
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*/
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class RtCondition {
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public:
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RtCondition();
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explicit RtCondition(int type);
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~RtCondition();
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/*These functions atomically release mutex,
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but block on the condition variable*/
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INT32 wait(const RtMutex& rtMutex);
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INT32 wait(RtMutex* rtMutex);
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/*returns with the timeout error*/
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INT32 timedwait(const RtMutex& rtMutex, UINT64 timeout_us);
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INT32 timedwait(RtMutex* rtMutex, UINT64 timeout_us);
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/*This wakes up at least one thread blocked on the condition variable*/
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INT32 signal();
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/*This wakes up all of the threads blocked on the condition variable*/
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INT32 broadcast();
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private:
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void* mData;
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};
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class RtSemaphore {
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public:
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RtSemaphore();
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~RtSemaphore();
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INT32 init(INT32 pshared, UINT32 value);
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INT32 getValue(int *val);
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INT32 tryWait();
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INT32 wait();
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INT32 post();
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private:
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void* mData;
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};
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class RtReference {
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public:
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RtReference();
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~RtReference();
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void addRef();
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void decRef();
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void wait();
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void waitExit();
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void reset();
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RT_BOOL isExited();
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INT32 getRefValue();
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private:
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RT_BOOL mIsExit;
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INT32 mRefNum;
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RtCondition *mCond;
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RtMutex *mLock;
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};
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class RtAutoRef {
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public:
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explicit inline RtAutoRef(RtReference* ref)
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: mRef(ref) {
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mRef->addRef();
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}
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inline ~RtAutoRef() {
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mRef->decRef();
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}
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private:
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RtReference* mRef;
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};
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#endif // INCLUDE_RT_BASE_RT_MUTEX_H_
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