pegasus/src/Pegasus/Common/Mutex.h - diff

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Diff for /pegasus/src/Pegasus/Common/Mutex.h between version 1.10.2.2 and 1.18

version 1.10.2.2, 2007/09/11 18:18:09

version 1.18, 2008/12/02 09:00:50

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//%2006////////////////////////////////////////////////////////////////////////

//%LICENSE////////////////////////////////////////////////////////////////

// Licensed to The Open Group (TOG) under one or more contributor license

// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.

// agreements. Refer to the OpenPegasusNOTICE.txt file distributed with

// this work for additional information regarding copyright ownership.

// IBM Corp.; EMC Corporation, The Open Group.

// Each contributor licenses this file to you under the OpenPegasus Open

// Source License; you may not use this file except in compliance with the

// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.

// License.

// EMC Corporation; VERITAS Software Corporation; The Open Group.

// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the "Software"),

// EMC Corporation; Symantec Corporation; The Open Group.

// to deal in the Software without restriction, including without limitation

// the rights to use, copy, modify, merge, publish, distribute, sublicense,

// Permission is hereby granted, free of charge, to any person obtaining a copy

// and/or sell copies of the Software, and to permit persons to whom the

// of this software and associated documentation files (the "Software"), to

// Software is furnished to do so, subject to the following conditions:

// deal in the Software without restriction, including without limitation the

// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

// The above copyright notice and this permission notice shall be included

// sell copies of the Software, and to permit persons to whom the Software is

// in all copies or substantial portions of the Software.

// furnished to do so, subject to the following conditions:

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT

// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR

// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

//==============================================================================

//////////////////////////////////////////////////////////////////////////

//%/////////////////////////////////////////////////////////////////////////////

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#include <Pegasus/Common/Config.h>

#include <Pegasus/Common/Linkage.h>

#include <Pegasus/Common/IPCExceptions.h>

#include <Pegasus/Common/Magic.h>

#include <Pegasus/Common/Threads.h>

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//==============================================================================

#if defined(PEGASUS_HAVE_PTHREADS) && defined(PEGASUS_HAVE_RECURSIVE_MUTEXES)

#if defined(PEGASUS_HAVE_PTHREADS)

typedef pthread_mutex_t MutexType;

inline void mutex_lock(MutexType* mutex) { pthread_mutex_lock(mutex); }

inline void mutex_unlock(MutexType* mutex) { pthread_mutex_unlock(mutex); }

struct MutexRep

{

pthread_mutex_t mutex;

int count;

};

# define PEGASUS_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER

#endif

#if defined(PEGASUS_HAVE_PTHREADS) && !defined(PEGASUS_HAVE_RECURSIVE_MUTEXES)

typedef pthread_mutex_t MutexType;

inline void mutex_lock(MutexType* mutex) { pthread_mutex_lock(mutex); }

inline void mutex_unlock(MutexType* mutex) { pthread_mutex_unlock(mutex); }

struct MutexRep

{

int recursive;

pthread_mutex_t mutex;

pthread_cond_t cond;

pthread_t owner;

int count;

};

# define PEGASUS_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER

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void lock();

void try_lock();

/**

Attempts to lock the mutex without blocking.

@return A Boolean indicating whether the lock was acquired.

Boolean try_lock();

void timed_lock(Uint32 milliseconds);

/**

Attempts to lock the mutex within the specified time.

@param milliseconds The maximum time to block while attempting to

acquire the lock.

@return A Boolean indicating whether the lock was acquired.

Boolean timed_lock(Uint32 milliseconds);

void unlock();

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// Use of this macro ensures that a static Mutex is not locked across a fork().

#if !defined(PEGASUS_HAVE_PTHREADS) || \

(defined(PEGASUS_OS_ZOS) && (__TARGET_LIB__ < 0x41090000)) || \

defined(PEGASUS_OS_ZOS) || \

defined(PEGASUS_OS_VMS) || \

defined(PEGASUS_OS_VMS)

defined(PEGASUS_OS_VXWORKS)

# define PEGASUS_FORK_SAFE_MUTEX(mutex)

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