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116 lines
3.3 KiB
C++
116 lines
3.3 KiB
C++
// -*- C++ -*-
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//==========================================================================
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/**
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* @file Condition_Recursive_Thread_Mutex.h
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*
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* $Id: Condition_Recursive_Thread_Mutex.h 86731 2009-09-17 12:23:48Z johnnyw $
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*
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* Moved from Synch.h.
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*
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* @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
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*/
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//==========================================================================
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#ifndef ACE_CONDITION_RECURSIVE_THREAD_MUTEX_H
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#define ACE_CONDITION_RECURSIVE_THREAD_MUTEX_H
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#include /**/ "ace/pre.h"
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#include /**/ "ace/ACE_export.h"
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#if !defined (ACE_LACKS_PRAGMA_ONCE)
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# pragma once
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#endif /* ACE_LACKS_PRAGMA_ONCE */
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#if !defined (ACE_HAS_THREADS)
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# include "ace/Null_Condition.h"
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#else /* ACE_HAS_THREADS */
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#include "ace/Recursive_Thread_Mutex.h"
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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template <class ACE_LOCK> class ACE_Condition;
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/**
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* @brief ACE_Condition template specialization written using
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* @a ACE_Recursive_Thread_Mutex. This allows threads to block until
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* shared data changes state using recursive mutexes.
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*/
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template<>
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class ACE_Export ACE_Condition<ACE_Recursive_Thread_Mutex>
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{
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public:
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/// Initialize the condition variable with a recursive mutex.
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ACE_Condition (ACE_Recursive_Thread_Mutex &m);
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/// Implicitly destroy the condition variable.
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~ACE_Condition (void);
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/**
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* Explicitly destroy the condition variable. Note that only one
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* thread should call this method since it doesn't protect against
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* race conditions.
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*/
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int remove (void);
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/**
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* Block on condition, or until absolute time-of-day has passed. If
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* abstime == 0 use "blocking" <wait> semantics. Else, if @a abstime
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* != 0 and the call times out before the condition is signaled
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* <wait> returns -1 and sets errno to ETIME.
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*/
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int wait (const ACE_Time_Value *abstime = 0);
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/**
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* Block on condition or until absolute time-of-day has passed. If
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* abstime == 0 use "blocking" wait() semantics on the recursive @a mutex
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* passed as a parameter (this is useful if you need to store the
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* <Condition> in shared memory). Else, if <abstime> != 0 and the
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* call times out before the condition is signaled <wait> returns -1
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* and sets errno to ETIME.
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*/
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int wait (ACE_Recursive_Thread_Mutex &mutex,
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const ACE_Time_Value *abstime = 0);
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/// Signal one waiting thread.
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int signal (void);
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/// Signal *all* waiting threads.
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int broadcast (void);
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/// Returns a reference to the underlying mutex;
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ACE_Recursive_Thread_Mutex &mutex (void);
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/// Dump the state of an object.
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void dump (void) const;
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private:
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// = Prevent assignment and copying.
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void operator= (const ACE_Condition<ACE_Recursive_Thread_Mutex> &);
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ACE_Condition (const ACE_Condition<ACE_Recursive_Thread_Mutex> &);
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private:
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/// A normal (i.e., non-recursive) condition variable.
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ACE_cond_t cond_;
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/// Reference to the recursive mutex.
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ACE_Recursive_Thread_Mutex &mutex_;
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};
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class ACE_Export ACE_Condition_Recursive_Thread_Mutex
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: public ACE_Condition<ACE_Recursive_Thread_Mutex>
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{
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public:
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/// Initialize the condition variable with a recursive mutex.
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ACE_Condition_Recursive_Thread_Mutex (ACE_Recursive_Thread_Mutex &m);
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};
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ACE_END_VERSIONED_NAMESPACE_DECL
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#endif /* !ACE_HAS_THREADS */
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#include /**/ "ace/post.h"
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#endif /* ACE_CONDITION_RECURSIVE_THREAD_MUTEX_H */
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