这是我迄今所做的:创建在C互斥锁柜类++
class mutexLocker
{
private:
/* Declaration of a Mutex variable `mutexA`. */
pthread_mutex_t &mutexA;
/* `mutexStatus` holds the return value of the function`pthread_mutex_lock `.
This value has to be returned to the callee so we need to preserve it in a class
variable. */
int mutexStatus;
/* We need to decide how to deal with the situation when one thread tries to lock then
mutex repeatedly. If the mutex is of type recursive, then there won't be any problem for
sure, but otherwise the case may result in a deadlock. */
pthread_t calleeThreadId;
public:
/* Constructor attempts to lock the desired mutex variable. */
mutexLocker (pthread_mutex_t argMutexVariable, pthread_t threadId)
: mutexA (argMutexVariable, calleeThreadId)
{
/* Return value is needed in order to know whether the mutex has been
successfully locked or not. */
int mutexStatus = pthread_mutex_lock (&argMutexVariable);
}
/* Since the constructor can't return anything, we need to have a separate function
which returns the status of the lock. */
int getMutexLockStatus()
{
return mutexStatus;
}
/* The destructor will get called automatically whereever the callee's scope ends, and
will get the mutex unlocked. */
~mutexLocker()
{
pthread_mutex_unlock (&mutexA);
}
};
应在DIY互斥锁柜类中提供什么其他功能?
是否有你想实现自己的原因而不是使用Boost或C++ 11标准库中可用的锁类? – 2012-08-16 06:10:11
“DIY互斥锁类中应该提供哪些其他功能?”是一个非常主观的问题,“可能会争辩辩论,辩论,投票或扩大讨论” - 因此投票结束时不具有建设性。 – paxdiablo 2012-08-16 06:11:52
@JoachimPileborg我不知道C++标准有任何互斥锁类!我以前在此搜索过Google。我会再看看。 – 2012-08-16 06:14:19