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Remove deps in prep for submodule
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2217 changed files with 0 additions and 591372 deletions
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// -*- C++ -*-
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//==========================================================================
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/**
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* @file Condition_Thread_Mutex.h
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*
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* $Id: Condition_Thread_Mutex.h 96073 2012-08-17 13:39:55Z mcorino $
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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_THREAD_MUTEX_H
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#define ACE_CONDITION_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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// ACE platform supports some form of threading.
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#include "ace/Thread_Mutex.h"
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#include "ace/Condition_Attributes.h"
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#include "ace/Condition_T.h"
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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class ACE_Time_Value;
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/**
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* @brief ACE_Condition template specialization written using
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* ACE_Mutexes. This allows threads to block until shared data
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* changes state.
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* A condition variable enables threads to atomically block and
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* test the condition under the protection of a mutual exclu-
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* sion lock (mutex) until the condition is satisfied. That is,
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* the mutex must have been held by the thread before calling
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* wait or signal on the condition. If the condition is false,
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* a thread blocks on a condition variable and atomically
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* releases the mutex that is waiting for the condition to
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* change. If another thread changes the condition, it may wake
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* up waiting threads by signaling the associated condition
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* variable. The waiting threads, upon awakening, reacquire the
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* mutex and re-evaluate the condition.
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*/
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template <>
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class ACE_Export ACE_Condition<ACE_Thread_Mutex>
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{
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public:
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/// Initialize the condition variable.
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ACE_Condition (ACE_Thread_Mutex &m,
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const ACE_TCHAR *name = 0,
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void *arg = 0);
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/// Initialize the condition variable.
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ACE_Condition (ACE_Thread_Mutex &m,
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const ACE_Condition_Attributes &attributes,
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const ACE_TCHAR *name = 0,
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void *arg = 0);
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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);
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/// Block on condition.
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int wait (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 on the @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 @a 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_Thread_Mutex &mutex, 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_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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/// Declare the dynamic allocation hooks.
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ACE_ALLOC_HOOK_DECLARE;
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protected:
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/// Condition variable.
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ACE_cond_t cond_;
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/// Reference to mutex lock.
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ACE_Thread_Mutex &mutex_;
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/// Keeps track of whether <remove> has been called yet to avoid
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/// multiple <remove> calls, e.g., explicitly and implicitly in the
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/// destructor. This flag isn't protected by a lock, so make sure
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/// that you don't have multiple threads simultaneously calling
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/// <remove> on the same object, which is a bad idea anyway...
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bool removed_;
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private:
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// = Prevent assignment and initialization.
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void operator= (const ACE_Condition<ACE_Thread_Mutex> &);
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ACE_Condition (const ACE_Condition<ACE_Thread_Mutex> &);
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};
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typedef ACE_Condition<ACE_Thread_Mutex> ACE_Condition_Thread_Mutex;
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ACE_END_VERSIONED_NAMESPACE_DECL
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#if defined (__ACE_INLINE__)
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#include "ace/Condition_Thread_Mutex.inl"
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#endif /* __ACE_INLINE__ */
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#endif /* !ACE_HAS_THREADS */
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#include /**/ "ace/post.h"
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#endif /* ACE_CONDITION_THREAD_MUTEX_H */
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