summaryrefslogtreecommitdiff
path: root/ACE/ace/Recursive_Thread_Mutex.h
diff options
context:
space:
mode:
Diffstat (limited to 'ACE/ace/Recursive_Thread_Mutex.h')
-rw-r--r--ACE/ace/Recursive_Thread_Mutex.h194
1 files changed, 0 insertions, 194 deletions
diff --git a/ACE/ace/Recursive_Thread_Mutex.h b/ACE/ace/Recursive_Thread_Mutex.h
deleted file mode 100644
index 38effc66afb..00000000000
--- a/ACE/ace/Recursive_Thread_Mutex.h
+++ /dev/null
@@ -1,194 +0,0 @@
-// -*- C++ -*-
-
-//==========================================================================
-/**
- * @file Recursive_Thread_Mutex.h
- *
- * $Id$
- *
- * Moved from Synch.h.
- *
- * @author Douglas C. Schmidt <schmidt@cs.wustl.edu> and
- * Abdullah Sowayan <abdullah.sowayan@lmco.com>
- */
-//==========================================================================
-
-#ifndef ACE_RECURSIVE_THREAD_MUTEX_H
-#define ACE_RECURSIVE_THREAD_MUTEX_H
-#include /**/ "ace/pre.h"
-
-#include /**/ "ace/ACE_export.h"
-
-#if !defined (ACE_LACKS_PRAGMA_ONCE)
-# pragma once
-#endif /* ACE_LACKS_PRAGMA_ONCE */
-
-#if !defined (ACE_HAS_THREADS)
-# include "ace/Null_Mutex.h"
-#else /* ACE_HAS_THREADS */
-// ACE platform supports some form of threading.
-
-#include "ace/OS_NS_Thread.h"
-
-ACE_BEGIN_VERSIONED_NAMESPACE_DECL
-
-/**
- * @class ACE_Recursive_Thread_Mutex
- *
- * @brief Implement a C++ wrapper that allows nested acquisition and
- * release of a mutex that occurs in the same thread.
- */
-class ACE_Export ACE_Recursive_Thread_Mutex
-{
-public:
- /// Initialize a recursive mutex.
- ACE_Recursive_Thread_Mutex (const ACE_TCHAR *name = 0,
- ACE_mutexattr_t *arg = 0);
-
- /// Implicitly release a recursive mutex.
- ~ACE_Recursive_Thread_Mutex (void);
-
- /**
- * Implicitly release a recursive mutex. Note that only one thread
- * should call this method since it doesn't protect against race
- * conditions.
- */
- int remove (void);
-
- /**
- * Acquire a recursive mutex (will increment the nesting level and
- * not deadmutex if the owner of the mutex calls this method more
- * than once).
- */
- int acquire (void);
-
- /**
- * Block the thread until we acquire the mutex or until @a tv times
- * out, in which case -1 is returned with @c errno == @c ETIME. Note
- * that @a tv is assumed to be in "absolute" rather than "relative"
- * time. The value of @a tv is updated upon return to show the
- * actual (absolute) acquisition time.
- */
- int acquire (ACE_Time_Value &tv);
-
- /**
- * If @a tv == 0 the call <acquire()> directly. Otherwise, Block the
- * thread until we acquire the mutex or until @a tv times out, in
- * which case -1 is returned with @c errno == @c ETIME. Note that
- * <*tv> is assumed to be in "absolute" rather than "relative" time.
- * The value of <*tv> is updated upon return to show the actual
- * (absolute) acquisition time.
- */
- int acquire (ACE_Time_Value *tv);
-
- /**
- * Conditionally acquire a recursive mutex (i.e., won't block).
- * Returns -1 on failure. If we "failed" because someone else
- * already had the lock, @c errno is set to @c EBUSY.
- */
- int tryacquire (void);
-
- /**
- * Acquire mutex ownership. This calls <acquire> and is only
- * here to make the <ACE_Recusive_Thread_Mutex> interface consistent
- * with the other synchronization APIs.
- */
- int acquire_read (void);
-
- /**
- * Acquire mutex ownership. This calls <acquire> and is only
- * here to make the <ACE_Recusive_Thread_Mutex> interface consistent
- * with the other synchronization APIs.
- */
- int acquire_write (void);
-
- /**
- * Conditionally acquire mutex (i.e., won't block). This calls
- * <tryacquire> and is only here to make the
- * <ACE_Recusive_Thread_Mutex> interface consistent with the other
- * synchronization APIs. Returns -1 on failure. If we "failed"
- * because someone else already had the lock, @c errno is set to
- * @c EBUSY.
- */
- int tryacquire_read (void);
-
- /**
- * Conditionally acquire mutex (i.e., won't block). This calls
- * <tryacquire> and is only here to make the
- * <ACE_Recusive_Thread_Mutex> interface consistent with the other
- * synchronization APIs. Returns -1 on failure. If we "failed"
- * because someone else already had the lock, @c errno is set to
- * @c EBUSY.
- */
- int tryacquire_write (void);
-
- /**
- * This is only here to make the ACE_Recursive_Thread_Mutex
- * interface consistent with the other synchronization APIs.
- * Assumes the caller has already acquired the mutex using one of
- * the above calls, and returns 0 (success) always.
- */
- int tryacquire_write_upgrade (void);
-
- /**
- * Releases a recursive mutex (will not release mutex until all the
- * nesting level drops to 0, which means the mutex is no longer
- * held).
- */
- int release (void);
-
- /// Return the id of the thread that currently owns the mutex.
- ACE_thread_t get_thread_id (void);
-
- /**
- * Return the nesting level of the recursion. When a thread has
- * acquired the mutex for the first time, the nesting level == 1.
- * The nesting level is incremented every time the thread acquires
- * the mutex recursively. Note that if the ACE_HAS_RECURSIVE_MUTEXES
- * macro is enabled then this method may return -1 on platforms that
- * do not expose the internal count.
- */
- int get_nesting_level (void);
-
- /// Returns a reference to the recursive mutex;
- ACE_recursive_thread_mutex_t &mutex (void);
-
- /// Returns a reference to the recursive mutex's internal mutex;
- ACE_thread_mutex_t &get_nesting_mutex (void);
-
- /// Dump the state of an object.
- void dump (void) const;
-
- /// Declare the dynamic allocation hooks.
- ACE_ALLOC_HOOK_DECLARE;
-
-protected:
- // = This method should *not* be public (they hold no locks...)
- void set_thread_id (ACE_thread_t t);
-
- /// Recursive mutex.
- ACE_recursive_thread_mutex_t lock_;
-
- /// Keeps track of whether <remove> has been called yet to avoid
- /// multiple <remove> calls, e.g., explicitly and implicitly in the
- /// destructor. This flag isn't protected by a lock, so make sure
- /// that you don't have multiple threads simultaneously calling
- /// <remove> on the same object, which is a bad idea anyway...
- bool removed_;
-
-private:
- // = Prevent assignment and initialization.
- void operator= (const ACE_Recursive_Thread_Mutex &);
- ACE_Recursive_Thread_Mutex (const ACE_Recursive_Thread_Mutex &);
-};
-
-ACE_END_VERSIONED_NAMESPACE_DECL
-
-#if defined (__ACE_INLINE__)
-#include "ace/Recursive_Thread_Mutex.inl"
-#endif /* __ACE_INLINE__ */
-
-#endif /* !ACE_HAS_THREADS */
-
-#include /**/ "ace/post.h"
-#endif /* ACE_RECURSIVE_THREAD_MUTEX_H */