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// -*- C++ -*-
#include "ace/OS_NS_sys_mman.h"
#if defined (ACE_HAS_ALLOC_HOOKS)
# include "ace/Malloc_Base.h"
#endif /* ACE_HAS_ALLOC_HOOKS */
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
ACE_INLINE int
ACE_Mutex::acquire_read (void)
{
// ACE_TRACE ("ACE_Mutex::acquire_read");
#ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (this->process_lock_)
return ACE_OS::mutex_lock (this->process_lock_);
#elif defined ACE_MUTEX_PROCESS_LOCK_IS_SEMA
if (this->process_lock_)
return ACE_OS::sema_wait (this->process_lock_);
#endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
return ACE_OS::mutex_lock (&this->lock_);
}
ACE_INLINE int
ACE_Mutex::acquire_write (void)
{
// ACE_TRACE ("ACE_Mutex::acquire_write");
#ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (this->process_lock_)
return ACE_OS::mutex_lock (this->process_lock_);
#elif defined ACE_MUTEX_PROCESS_LOCK_IS_SEMA
if (this->process_lock_)
return ACE_OS::sema_wait (this->process_lock_);
#endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
return ACE_OS::mutex_lock (&this->lock_);
}
ACE_INLINE int
ACE_Mutex::tryacquire_read (void)
{
// ACE_TRACE ("ACE_Mutex::tryacquire_read");
#ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (this->process_lock_)
return ACE_OS::mutex_trylock (this->process_lock_);
#elif defined ACE_MUTEX_PROCESS_LOCK_IS_SEMA
if (this->process_lock_)
return ACE_OS::sema_trywait (this->process_lock_);
#endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
return ACE_OS::mutex_trylock (&this->lock_);
}
ACE_INLINE const ACE_mutex_t &
ACE_Mutex::lock (void) const
{
// ACE_TRACE ("ACE_Mutex::lock");
#ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (this->process_lock_)
return *this->process_lock_;
#endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
return this->lock_;
}
ACE_INLINE ACE_mutex_t &
ACE_Mutex::lock (void)
{
// ACE_TRACE ("ACE_Mutex::lock");
#ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (this->process_lock_)
return *this->process_lock_;
#endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
return this->lock_;
}
ACE_INLINE int
ACE_Mutex::tryacquire_write (void)
{
// ACE_TRACE ("ACE_Mutex::tryacquire_write");
#ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (this->process_lock_)
return ACE_OS::mutex_trylock (this->process_lock_);
#elif defined ACE_MUTEX_PROCESS_LOCK_IS_SEMA
if (this->process_lock_)
return ACE_OS::sema_trywait (this->process_lock_);
#endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
return ACE_OS::mutex_trylock (&this->lock_);
}
ACE_INLINE int
ACE_Mutex::tryacquire_write_upgrade (void)
{
// ACE_TRACE ("ACE_Mutex::tryacquire_write_upgrade");
return 0;
}
ACE_INLINE int
ACE_Mutex::acquire (void)
{
// ACE_TRACE ("ACE_Mutex::acquire");
#ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (this->process_lock_)
return ACE_OS::mutex_lock (this->process_lock_);
#elif defined ACE_MUTEX_PROCESS_LOCK_IS_SEMA
if (this->process_lock_)
return ACE_OS::sema_wait (this->process_lock_);
#endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
return ACE_OS::mutex_lock (&this->lock_);
}
ACE_INLINE int
ACE_Mutex::acquire (ACE_Time_Value &tv)
{
// ACE_TRACE ("ACE_Mutex::acquire");
#ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (this->process_lock_)
return ACE_OS::mutex_lock (this->process_lock_, tv);
#elif defined ACE_MUTEX_PROCESS_LOCK_IS_SEMA
if (this->process_lock_)
return ACE_OS::sema_wait (this->process_lock_, tv);
#endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
return ACE_OS::mutex_lock (&this->lock_, tv);
}
ACE_INLINE int
ACE_Mutex::acquire (ACE_Time_Value *tv)
{
#ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (this->process_lock_)
return ACE_OS::mutex_lock (this->process_lock_, tv);
#elif defined ACE_MUTEX_PROCESS_LOCK_IS_SEMA
if (this->process_lock_)
return ACE_OS::sema_wait (this->process_lock_, tv);
#endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
return ACE_OS::mutex_lock (&this->lock_, tv);
}
ACE_INLINE int
ACE_Mutex::tryacquire (void)
{
// ACE_TRACE ("ACE_Mutex::tryacquire");
#ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (this->process_lock_)
return ACE_OS::mutex_trylock (this->process_lock_);
#elif defined ACE_MUTEX_PROCESS_LOCK_IS_SEMA
if (this->process_lock_)
return ACE_OS::sema_trywait (this->process_lock_);
#endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
return ACE_OS::mutex_trylock (&this->lock_);
}
ACE_INLINE int
ACE_Mutex::release (void)
{
// ACE_TRACE ("ACE_Mutex::release");
#ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (this->process_lock_)
return ACE_OS::mutex_unlock (this->process_lock_);
#elif defined ACE_MUTEX_PROCESS_LOCK_IS_SEMA
if (this->process_lock_)
return ACE_OS::sema_post (this->process_lock_);
#endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
return ACE_OS::mutex_unlock (&this->lock_);
}
ACE_INLINE int
ACE_Mutex::remove (void)
{
// ACE_TRACE ("ACE_Mutex::remove");
int result = 0;
#ifdef ACE_MUTEX_USE_PROCESS_LOCK
// In the case of a interprocess mutex, the owner is the first
// process that created the shared memory object. In this case, the
// lockname_ pointer will be non-zero (points to allocated memory
// for the name). Owner or not, the memory needs to be unmapped
// from the process. If we are the owner, the file used for
// shm_open needs to be deleted as well.
if (this->process_lock_)
{
if (this->removed_ == false)
{
this->removed_ = true;
// Only destroy the lock if we're the ones who initialized
// it.
# ifdef ACE_MUTEX_PROCESS_LOCK_IS_MUTEX
if (!this->lockname_)
ACE_OS::munmap ((void *) this->process_lock_,
sizeof (ACE_mutex_t));
else
{
result = ACE_OS::mutex_destroy (this->process_lock_);
ACE_OS::munmap ((void *) this->process_lock_,
sizeof (ACE_mutex_t));
ACE_OS::shm_unlink (this->lockname_);
}
# elif defined ACE_MUTEX_PROCESS_LOCK_IS_SEMA
result = ACE_OS::sema_destroy (this->process_lock_);
# endif /* ACE_MUTEX_PROCESS_LOCK_IS_MUTEX */
# ifdef ACE_HAS_ALLOC_HOOKS
ACE_Allocator::instance ()->free (const_cast<ACE_TCHAR *> (
this->lockname_));
# else
ACE_OS::free (const_cast<ACE_TCHAR *> (this->lockname_));
# endif /* ACE_HAS_ALLOC_HOOKS */
}
return result;
}
#endif /* ACE_MUTEX_USE_PROCESS_LOCK */
if (this->removed_ == false)
{
this->removed_ = true;
result = ACE_OS::mutex_destroy (&this->lock_);
}
return result;
}
ACE_END_VERSIONED_NAMESPACE_DECL
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