version 1.3.14.10, 2006/08/01 20:29:59
|
version 1.16, 2008/12/01 17:49:53
|
|
|
//%2006//////////////////////////////////////////////////////////////////////// |
//%LICENSE//////////////////////////////////////////////////////////////// |
// | // |
// Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development |
// 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 |
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.; |
// 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 |
// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.; |
// Source License; you may not use this file except in compliance with the |
// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group. |
// License. |
// Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.; |
|
// EMC Corporation; VERITAS Software Corporation; The Open Group. |
|
// Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.; |
|
// EMC Corporation; Symantec 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"), to |
|
// deal in the Software without restriction, including without limitation the |
|
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
|
// sell copies of the Software, and to permit persons to whom the Software is |
|
// furnished to do so, subject to the following conditions: |
|
// |
|
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN |
|
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED |
|
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT |
|
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
|
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
|
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
|
// 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. |
|
// | // |
//============================================================================== |
// Permission is hereby granted, free of charge, to any person obtaining a |
|
// copy of this software and associated documentation files (the "Software"), |
|
// to deal in the Software without restriction, including without limitation |
|
// the rights to use, copy, modify, merge, publish, distribute, sublicense, |
|
// and/or sell copies of the Software, and to permit persons to whom the |
|
// Software is furnished to do so, subject to the following conditions: |
|
// |
|
// The above copyright notice and this permission notice shall be included |
|
// in all copies or substantial portions of the Software. |
|
// |
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
|
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
|
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
|
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 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. |
|
// |
|
////////////////////////////////////////////////////////////////////////// |
// | // |
//%///////////////////////////////////////////////////////////////////////////// | //%///////////////////////////////////////////////////////////////////////////// |
| |
|
|
#include "Time.h" | #include "Time.h" |
#include "PegasusAssert.h" | #include "PegasusAssert.h" |
#include "Once.h" | #include "Once.h" |
|
#include "Exception.h" |
|
#include "System.h" |
|
|
|
#define MUTEX_LOCK_FAILED_KEY "Common.InternalException.MUTEX_LOCK_FAILED" |
|
#define MUTEX_LOCK_FAILED_MSG "Failed to acquire mutex lock: $0" |
| |
PEGASUS_NAMESPACE_BEGIN | PEGASUS_NAMESPACE_BEGIN |
| |
|
|
#endif | #endif |
} | } |
| |
|
Mutex::Mutex(RecursiveTag) |
|
{ |
|
once(&_once, _init_attr); |
|
pthread_mutex_init(&_rep.mutex, &_attr); |
|
#if defined(PEGASUS_DEBUG) |
|
_rep.count = 0; |
|
#endif |
|
} |
|
|
|
Mutex::Mutex(NonRecursiveTag) |
|
{ |
|
pthread_mutex_init(&_rep.mutex, NULL); |
|
#if defined(PEGASUS_DEBUG) |
|
_rep.count = 0; |
|
#endif |
|
} |
|
|
Mutex::~Mutex() | Mutex::~Mutex() |
{ | { |
PEGASUS_DEBUG_ASSERT(_magic); | PEGASUS_DEBUG_ASSERT(_magic); |
|
|
{ | { |
PEGASUS_DEBUG_ASSERT(_magic); | PEGASUS_DEBUG_ASSERT(_magic); |
| |
switch (pthread_mutex_lock(&_rep.mutex)) |
int r = pthread_mutex_lock(&_rep.mutex); |
|
|
|
if (r == 0) |
{ | { |
case 0: |
|
#if defined(PEGASUS_DEBUG) | #if defined(PEGASUS_DEBUG) |
_rep.count++; | _rep.count++; |
#endif | #endif |
break; |
} |
|
else |
|
{ |
|
if (r != -1) |
|
{ |
|
// Special behavior for Single UNIX Specification, Version 3 |
|
errno = r; |
|
} |
| |
default: |
throw Exception(MessageLoaderParms( |
throw WaitFailed(Threads::self()); |
MUTEX_LOCK_FAILED_KEY, |
|
MUTEX_LOCK_FAILED_MSG, |
|
PEGASUS_SYSTEM_ERRORMSG_NLS)); |
} | } |
} | } |
| |
void Mutex::try_lock() |
Boolean Mutex::try_lock() |
{ | { |
PEGASUS_DEBUG_ASSERT(_magic); | PEGASUS_DEBUG_ASSERT(_magic); |
| |
switch (pthread_mutex_trylock(&_rep.mutex)) |
int r = pthread_mutex_trylock(&_rep.mutex); |
|
|
|
if (r == 0) |
{ | { |
case 0: |
|
#if defined(PEGASUS_DEBUG) | #if defined(PEGASUS_DEBUG) |
_rep.count++; | _rep.count++; |
#endif | #endif |
break; |
return true; |
|
} |
| |
case EBUSY: |
if (r != -1) |
throw AlreadyLocked(Threads::self()); |
{ |
|
// Special behavior for Single UNIX Specification, Version 3 |
|
errno = r; |
|
} |
| |
default: |
if (errno == EBUSY) |
throw WaitFailed(Threads::self()); |
{ |
|
return false; |
} | } |
|
|
|
throw Exception(MessageLoaderParms( |
|
MUTEX_LOCK_FAILED_KEY, |
|
MUTEX_LOCK_FAILED_MSG, |
|
PEGASUS_SYSTEM_ERRORMSG_NLS)); |
} | } |
| |
void Mutex::timed_lock(Uint32 milliseconds) |
Boolean Mutex::timed_lock(Uint32 milliseconds) |
{ | { |
PEGASUS_DEBUG_ASSERT(_magic); |
|
|
|
struct timeval now; | struct timeval now; |
struct timeval finish; | struct timeval finish; |
struct timeval remaining; | struct timeval remaining; |
|
|
finish.tv_usec = usec % 1000000; | finish.tv_usec = usec % 1000000; |
} | } |
| |
for (;;) |
while (!try_lock()) |
{ |
|
switch (pthread_mutex_trylock(&_rep.mutex)) |
|
{ |
|
case 0: |
|
#if defined(PEGASUS_DEBUG) |
|
_rep.count++; |
|
#endif |
|
return; |
|
|
|
case EBUSY: |
|
{ | { |
gettimeofday(&now, NULL); | gettimeofday(&now, NULL); |
| |
if (Time::subtract(&remaining, &finish, &now)) | if (Time::subtract(&remaining, &finish, &now)) |
throw TimeOut(Threads::self()); |
{ |
|
return false; |
|
} |
| |
Threads::yield(); | Threads::yield(); |
break; |
|
} | } |
| |
default: |
return true; |
throw WaitFailed(Threads::self()); |
|
} |
|
} |
|
} | } |
| |
void Mutex::unlock() | void Mutex::unlock() |
|
|
_rep.count--; | _rep.count--; |
#endif | #endif |
| |
if (pthread_mutex_unlock(&_rep.mutex) != 0) |
int rc = pthread_mutex_unlock(&_rep.mutex); |
throw Permission(Threads::self()); |
// All documented error codes represent coding errors. |
|
PEGASUS_ASSERT(rc == 0); |
|
} |
|
|
|
#if defined(PEGASUS_OS_LINUX) |
|
void Mutex::reinitialize() |
|
{ |
|
pthread_mutex_init(&_rep.mutex, &_attr); |
|
#if defined(PEGASUS_DEBUG) |
|
_rep.count = 0; |
|
#endif |
} | } |
|
#endif |
| |
#endif /* PEGASUS_HAVE_PTHREADS */ | #endif /* PEGASUS_HAVE_PTHREADS */ |
| |
|
|
| |
#if defined(PEGASUS_HAVE_WINDOWS_THREADS) | #if defined(PEGASUS_HAVE_WINDOWS_THREADS) |
| |
|
static inline void _initialize(MutexRep& rep) |
|
{ |
|
rep.handle = CreateMutex(NULL, FALSE, NULL); |
|
rep.count = 0; |
|
} |
|
|
Mutex::Mutex() | Mutex::Mutex() |
{ | { |
_rep.handle = CreateMutex(NULL, FALSE, NULL); |
_initialize(_rep); |
#if defined(PEGASUS_DEBUG) |
} |
_rep.count = 0; |
|
#endif |
Mutex::Mutex(RecursiveTag) |
|
{ |
|
_initialize(_rep); |
|
} |
|
|
|
Mutex::Mutex(NonRecursiveTag) |
|
{ |
|
_initialize(_rep); |
} | } |
| |
Mutex::~Mutex() | Mutex::~Mutex() |
|
|
DWORD rc = WaitForSingleObject(_rep.handle, INFINITE); | DWORD rc = WaitForSingleObject(_rep.handle, INFINITE); |
| |
if (rc == WAIT_FAILED) | if (rc == WAIT_FAILED) |
throw WaitFailed(Threads::self()); |
{ |
|
throw Exception(MessageLoaderParms( |
|
MUTEX_LOCK_FAILED_KEY, |
|
MUTEX_LOCK_FAILED_MSG, |
|
PEGASUS_SYSTEM_ERRORMSG_NLS)); |
|
} |
| |
#if defined(PEGASUS_DEBUG) |
|
_rep.count++; | _rep.count++; |
#endif |
|
} | } |
| |
void Mutex::try_lock() |
Boolean Mutex::try_lock() |
{ | { |
PEGASUS_DEBUG_ASSERT(_magic); | PEGASUS_DEBUG_ASSERT(_magic); |
| |
DWORD rc = WaitForSingleObject(_rep.handle, 0); | DWORD rc = WaitForSingleObject(_rep.handle, 0); |
| |
if (rc == WAIT_TIMEOUT) | if (rc == WAIT_TIMEOUT) |
throw AlreadyLocked(Threads::self()); |
{ |
|
return false; |
|
} |
| |
if (rc == WAIT_FAILED) | if (rc == WAIT_FAILED) |
throw WaitFailed(Threads::self()); |
{ |
|
throw Exception(MessageLoaderParms( |
|
MUTEX_LOCK_FAILED_KEY, |
|
MUTEX_LOCK_FAILED_MSG, |
|
PEGASUS_SYSTEM_ERRORMSG_NLS)); |
|
} |
| |
#if defined(PEGASUS_DEBUG) |
|
_rep.count++; | _rep.count++; |
#endif |
return true; |
} | } |
| |
void Mutex::timed_lock(Uint32 milliseconds) |
Boolean Mutex::timed_lock(Uint32 milliseconds) |
{ | { |
PEGASUS_DEBUG_ASSERT(_magic); | PEGASUS_DEBUG_ASSERT(_magic); |
| |
DWORD rc = WaitForSingleObject(_rep.handle, milliseconds); | DWORD rc = WaitForSingleObject(_rep.handle, milliseconds); |
| |
if (rc == WAIT_TIMEOUT) | if (rc == WAIT_TIMEOUT) |
throw TimeOut(Threads::self()); |
return false; |
| |
if (rc == WAIT_FAILED) | if (rc == WAIT_FAILED) |
throw WaitFailed(Threads::self()); |
{ |
|
throw Exception(MessageLoaderParms( |
|
MUTEX_LOCK_FAILED_KEY, |
|
MUTEX_LOCK_FAILED_MSG, |
|
PEGASUS_SYSTEM_ERRORMSG_NLS)); |
|
} |
| |
#if defined(PEGASUS_DEBUG) |
|
_rep.count++; | _rep.count++; |
#endif |
return true; |
} | } |
| |
void Mutex::unlock() | void Mutex::unlock() |
|
|
PEGASUS_DEBUG_ASSERT(_magic); | PEGASUS_DEBUG_ASSERT(_magic); |
PEGASUS_DEBUG_ASSERT(_rep.count > 0); | PEGASUS_DEBUG_ASSERT(_rep.count > 0); |
| |
#if defined(PEGASUS_DEBUG) |
|
_rep.count--; | _rep.count--; |
#endif |
|
ReleaseMutex(_rep.handle); | ReleaseMutex(_rep.handle); |
} | } |
| |