47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
#ifndef RWLOCK_H
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#define RWLOCK_H
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#include "error_list.h"
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class RWLock {
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protected:
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static RWLock* (*create_func)();
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public:
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virtual void read_lock()=0; ///< Lock the rwlock, block if locked by someone else
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virtual void read_unlock()=0; ///< Unlock the rwlock, let other threads continue
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virtual Error read_try_lock()=0; ///< Attempt to lock the rwlock, OK on success, ERROR means it can't lock.
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virtual void write_lock()=0; ///< Lock the rwlock, block if locked by someone else
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virtual void write_unlock()=0; ///< Unlock the rwlock, let other thwrites continue
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virtual Error write_try_lock()=0; ///< Attempt to lock the rwlock, OK on success, ERROR means it can't lock.
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static RWLock * create(); ///< Create a rwlock
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virtual ~RWLock();
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};
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class RWLockRead {
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RWLock *lock;
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public:
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RWLockRead(RWLock* p_lock) { lock=p_lock; if (lock) lock->read_lock(); }
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~RWLockRead() { if (lock) lock->read_unlock(); }
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};
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class RWLockWrite {
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RWLock *lock;
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public:
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RWLockWrite(RWLock* p_lock) { lock=p_lock; if (lock) lock->write_lock(); }
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~RWLockWrite() { if (lock) lock->write_unlock(); }
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};
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#endif // RWLOCK_H
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