version 1.19, 2002/06/07 00:03:34
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version 1.69, 2009/08/13 13:13:07
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//%/-*-c++-*-//////////////////////////////////////////////////////////////////////////// |
//%LICENSE//////////////////////////////////////////////////////////////// |
// | // |
// Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Company, IBM, |
// Licensed to The Open Group (TOG) under one or more contributor license |
// The Open Group, Tivoli Systems |
// agreements. Refer to the OpenPegasusNOTICE.txt file distributed with |
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// this work for additional information regarding copyright ownership. |
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// Each contributor licenses this file to you under the OpenPegasus Open |
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// Source License; you may not use this file except in compliance with the |
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// License. |
// | // |
// Permission is hereby granted, free of charge, to any person obtaining a copy |
// Permission is hereby granted, free of charge, to any person obtaining a |
// of this software and associated documentation files (the "Software"), to |
// copy of this software and associated documentation files (the "Software"), |
// deal in the Software without restriction, including without limitation the |
// to deal in the Software without restriction, including without limitation |
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
// the rights to use, copy, modify, merge, publish, distribute, sublicense, |
// sell copies of the Software, and to permit persons to whom the Software is |
// and/or sell copies of the Software, and to permit persons to whom the |
// furnished to do so, subject to the following conditions: |
// Software is furnished to do so, subject to the following conditions: |
// |
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// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN |
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// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED |
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// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT |
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// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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// | // |
//============================================================================== |
// The above copyright notice and this permission notice shall be included |
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// in all copies or substantial portions of the Software. |
// | // |
// Author: Mike Day (mdday@us.ibm.com) |
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
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// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
// | // |
// Modified By: Markus Mueller |
////////////////////////////////////////////////////////////////////////// |
// | // |
//%///////////////////////////////////////////////////////////////////////////// | //%///////////////////////////////////////////////////////////////////////////// |
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#ifndef Pegasus_Thread_h | #ifndef Pegasus_Thread_h |
#define Pegasus_Thread_h | #define Pegasus_Thread_h |
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#include <cstring> |
#include <Pegasus/Common/Config.h> | #include <Pegasus/Common/Config.h> |
#include <Pegasus/Common/IPC.h> |
#include <Pegasus/Common/AtomicInt.h> |
#include <Pegasus/Common/Exception.h> |
#include <Pegasus/Common/InternalException.h> |
#include <Pegasus/Common/DQueue.h> |
#include <Pegasus/Common/AcceptLanguageList.h> |
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#include <Pegasus/Common/Linkage.h> |
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#include <Pegasus/Common/AutoPtr.h> |
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#include <Pegasus/Common/List.h> |
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#include <Pegasus/Common/Mutex.h> |
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#include <Pegasus/Common/Semaphore.h> |
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#include <Pegasus/Common/TSDKey.h> |
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#include <Pegasus/Common/Threads.h> |
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#if defined(PEGASUS_HAVE_PTHREADS) |
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# include <signal.h> |
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#endif |
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PEGASUS_NAMESPACE_BEGIN | PEGASUS_NAMESPACE_BEGIN |
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class PEGASUS_COMMON_LINKAGE cleanup_handler |
class PEGASUS_COMMON_LINKAGE cleanup_handler : public Linkable |
{ | { |
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public: | public: |
cleanup_handler( void (*routine)(void *), void *arg ) : _routine(routine), _arg(arg) {} |
cleanup_handler(void (*routine) (void *), void *arg):_routine(routine), |
~cleanup_handler() {; } |
_arg(arg) |
inline Boolean operator==(const void *key) const |
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{ | { |
if(key == (void *)_routine) |
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return true; |
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return false; |
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} | } |
inline Boolean operator ==(const cleanup_handler & b) const |
~cleanup_handler() |
{ |
{; |
return(operator==((const void *)b._routine)); |
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} | } |
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private: | private: |
void execute(void) { _routine(_arg); } |
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void execute() |
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{ |
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_routine(_arg); |
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} |
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cleanup_handler(); | cleanup_handler(); |
void (*_routine)(void *); |
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void (*_routine)(void*); |
void *_arg; | void *_arg; |
PEGASUS_CLEANUP_HANDLE _cleanup_buffer; |
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friend class DQueue<class cleanup_handler>; |
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friend class Thread; | friend class Thread; |
}; | }; |
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/////////////////////////////////////////////////////////////////////////////// | /////////////////////////////////////////////////////////////////////////////// |
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enum TSD_Key |
class PEGASUS_COMMON_LINKAGE thread_data |
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{ | { |
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TSD_ACCEPT_LANGUAGES, |
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TSD_SLEEP_SEM, |
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TSD_LAST_ACTIVITY_TIME, |
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TSD_WORK_FUNC, |
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TSD_WORK_PARM, |
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TSD_BLOCKING_SEM, |
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TSD_CIMOM_HANDLE_CONTENT_LANGUAGES, |
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TSD_RESERVED_1, |
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TSD_RESERVED_2, |
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TSD_RESERVED_3, |
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TSD_RESERVED_4, |
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TSD_RESERVED_5, |
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TSD_RESERVED_6, |
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TSD_RESERVED_7, |
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TSD_RESERVED_8, |
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// Add new TSD keys before this line. |
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TSD_COUNT |
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}; |
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class thread_data |
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{ |
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/** |
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* This class is NOT build thread-safe. |
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* The Caller(user) of this class has to ensure there is no collision |
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* taking place. |
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* |
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* There is no mechanism in place to protect threads from manipulating |
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* the same thread-specific storage at one time. |
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* Make sure the possibility for a parallel access to the same |
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* threads-specific data from multiple threads cannot arise. |
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* |
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* In OpenPegasus this class is used in the ThreadPool |
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* - on initialisation and creation of threads owned by ThreadPool |
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* - on threads that are idle inside the ThreadPool |
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* - on the ThreadPools main thread (the thread which the ThreadPool |
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* runs in) |
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* In OpenPegasus this class is used in the |
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* ClientCIMOMHandleRep and InternalCIMOMHandleRep |
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* - on the current active Thread which belongs to that CIMOMHandle |
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* |
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*/ |
public: | public: |
static void default_delete(void *data); |
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thread_data( const Sint8 *key ) : _delete_func(NULL) , _data(NULL), _size(0) |
static void default_delete(void *data) |
{ | { |
PEGASUS_ASSERT(key != NULL); |
if (data) |
size_t keysize = strlen(key); |
::operator delete(data); |
_key = new Sint8 [keysize + 1]; |
} |
memcpy(_key, key, keysize); |
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_key[keysize] = 0x00; |
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thread_data(TSD_Key key) : _delete_func(0), _data(0), _size(0), _key(key) |
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{ |
} | } |
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thread_data(const Sint8 *key, size_t size) : _delete_func(default_delete), _size(size) |
thread_data(TSD_Key key, size_t size) : |
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_delete_func(default_delete), _size(size), _key(key) |
{ | { |
PEGASUS_ASSERT(key != NULL); |
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size_t keysize = strlen(key); |
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_key = new Sint8 [keysize + 1]; |
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memcpy(_key, key, keysize); |
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_key[keysize] = 0x00; |
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_data = ::operator new(_size) ; | _data = ::operator new(_size) ; |
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} | } |
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thread_data(const Sint8 *key, size_t size, void *data) : _delete_func(default_delete), _size(size) |
thread_data(TSD_Key key, size_t size, void* data) |
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: _delete_func(default_delete), _size(size), _key(key) |
{ | { |
PEGASUS_ASSERT(key != NULL); |
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PEGASUS_ASSERT(data != NULL); |
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size_t keysize = strlen(key); |
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_key = new Sint8[keysize + 1]; |
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memcpy(_key, key, keysize); |
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_key[keysize] = 0x00; |
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_data = ::operator new(_size); | _data = ::operator new(_size); |
memcpy(_data, data, size); | memcpy(_data, data, size); |
} | } |
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~thread_data() | ~thread_data() |
{ | { |
if( _data != NULL) |
if (_data && _delete_func) |
if(_delete_func != NULL) |
(*_delete_func)(_data); |
{ |
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_delete_func( _data ); |
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} |
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if( _key != NULL ) |
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delete [] _key; |
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} | } |
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void put_data(void (*del)(void *), size_t size, void *data ) throw(NullPointer) |
/** |
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* This function is used to put data in thread space. |
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* |
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* Be aware that there is NOTHING in place to stop |
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* other users of the thread to remove this data. |
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* Or change the data. |
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* |
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* You, the developer has to make sure that there are |
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* no situations in which this can arise (ie, have a |
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* lock for the function which manipulates the TSD. |
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* |
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* @exception NullPointer |
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*/ |
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void put_data(void (*del)(void *), size_t size, void* data) |
{ | { |
if(_data != NULL) |
if (_data && _delete_func) |
if(_delete_func != NULL) |
(*_delete_func)(_data); |
_delete_func(_data); |
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_delete_func = del; | _delete_func = del; |
_data = data; | _data = data; |
_size = size; | _size = size; |
return ; |
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} | } |
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size_t get_size(void) { return _size; } |
size_t get_size() |
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{ |
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return _size; |
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} |
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void* get_data() |
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{ |
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return _data; |
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} |
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/** |
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This function is used to retrieve data from the |
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TSD, the thread specific data. |
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Be aware that there is NOTHING in place to stop |
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other users of the thread to change the data you |
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get from this function. |
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You, the developer has to make sure that there are |
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no situations in which this can arise (ie, have a |
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lock for the function which manipulates the TSD. |
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*/ |
void get_data(void **data, size_t *size) | void get_data(void **data, size_t *size) |
{ | { |
if(data == NULL || size == NULL) |
if (data == 0 || size == 0) |
throw NullPointer(); | throw NullPointer(); |
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*data = _data; | *data = _data; |
*size = _size; | *size = _size; |
return; |
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} | } |
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void copy_data(void **buf, size_t *size) throw(NullPointer) |
// @exception NullPointer |
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void copy_data(void** buf, size_t* size) |
{ | { |
if((buf == NULL) || (size == NULL)) |
if ((buf == 0) || (size == 0)) |
throw NullPointer() ; | throw NullPointer() ; |
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*buf = ::operator new(_size); | *buf = ::operator new(_size); |
*size = _size; | *size = _size; |
memcpy(*buf, _data, _size); | memcpy(*buf, _data, _size); |
return; |
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} |
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inline Boolean operator==(const void *key) const |
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{ |
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if ( ! strcmp(_key, (Sint8 *)key)) |
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return(true); |
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return(false); |
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} | } |
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inline Boolean operator==(const thread_data& b) const |
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{ |
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return(operator==((const void *)b._key)); |
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} |
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private: | private: |
void (*_delete_func) (void *data) ; |
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thread_data(); | thread_data(); |
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thread_data(const thread_data& x); |
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thread_data& operator=(const thread_data& x); |
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void (*_delete_func)(void*); |
void *_data; | void *_data; |
size_t _size; | size_t _size; |
Sint8 *_key; |
TSD_Key _key; |
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friend class DQueue<thread_data>; |
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friend class Thread; |
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}; | }; |
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/////////////////////////////////////////////////////////////////////////// |
enum ThreadStatus |
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{ |
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PEGASUS_THREAD_OK = 1, /* No problems */ |
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PEGASUS_THREAD_INSUFFICIENT_RESOURCES, /* Can't allocate a thread. |
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Not enough memory. Try |
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again later */ |
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PEGASUS_THREAD_SETUP_FAILURE, /* Could not allocate into the thread |
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specific data storage. */ |
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PEGASUS_THREAD_UNAVAILABLE /* Service is being destroyed and no new |
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threads can be provided. */ |
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}; |
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class PEGASUS_COMMON_LINKAGE ThreadPool; |
/////////////////////////////////////////////////////////////////////////// |
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class PEGASUS_COMMON_LINKAGE Thread |
class PEGASUS_COMMON_LINKAGE Thread : public Linkable |
{ | { |
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public: | public: |
Thread( PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *start )(void *), |
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void *parameter, Boolean detached ); |
Thread( |
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ThreadReturnType(PEGASUS_THREAD_CDECL* start) (void*), |
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void* parameter, |
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Boolean detached); |
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~Thread(); | ~Thread(); |
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void run(void); |
/** Start the thread. |
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@return PEGASUS_THREAD_OK if the thread is started successfully, |
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PEGASUS_THREAD_INSUFFICIENT_RESOURCES if the resources necessary |
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to start the thread are not currently available. |
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PEGASUS_THREAD_SETUP_FAILURE if the thread could not |
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be create properly - check the 'errno' value for specific operating |
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system return code. |
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*/ |
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ThreadStatus run(); |
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// get the user parameter | // get the user parameter |
inline void *get_parm(void) { return _thread_parm; } |
void *get_parm() |
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{ |
// send the thread a signal -- may not be appropriate due to Windows |
return _thread_parm; |
// void kill(int signum); |
} |
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// cancellation must be deferred (not asynchronous) | // cancellation must be deferred (not asynchronous) |
// for user-level threads the thread itself can decide | // for user-level threads the thread itself can decide |
// when it should die. | // when it should die. |
void cancel(void); |
void cancel(); |
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// cancel if there is a pending cancellation request |
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void test_cancel(void); |
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Boolean is_cancelled(void); |
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// for user-level threads - put the calling thread | // for user-level threads - put the calling thread |
// to sleep and jump to the thread scheduler. | // to sleep and jump to the thread scheduler. |
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// or gnu portable threads will have an existing | // or gnu portable threads will have an existing |
// routine that can be mapped to this method | // routine that can be mapped to this method |
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void thread_switch(void); |
void thread_switch(); |
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#if defined(PEGASUS_PLATFORM_LINUX_IX86_GNU) || defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU) |
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// suspend this thread |
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void suspend(void) ; |
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// resume this thread |
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void resume(void) ; |
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#endif |
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static void sleep(Uint32 msec) ; | static void sleep(Uint32 msec) ; |
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// block the calling thread until this thread terminates | // block the calling thread until this thread terminates |
void join( void ); |
void join(); |
void thread_init(void); |
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// thread routine needs to call this function when | // thread routine needs to call this function when |
// it is ready to exit | // it is ready to exit |
void exit_self(PEGASUS_THREAD_RETURN return_code) ; |
void exit_self(ThreadReturnType return_code); |
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// stack of functions to be called when thread terminates | // stack of functions to be called when thread terminates |
// will be called last in first out (LIFO) | // will be called last in first out (LIFO) |
void cleanup_push( void (*routine) (void *), void *parm ) throw(IPCException); |
void cleanup_push(void (*routine) (void *), void* parm); |
void cleanup_pop(Boolean execute = true) throw(IPCException); |
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// create and initialize a tsd |
void cleanup_pop(Boolean execute = true); |
inline void create_tsd(const Sint8 *key, int size, void *buffer) throw(IPCException) |
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{ |
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thread_data *tsd = new thread_data(key, size, buffer); |
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try { _tsd.insert_first(tsd); } |
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catch(IPCException& e) { e = e; delete tsd; throw; } |
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} |
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// get the buffer associated with the key | // get the buffer associated with the key |
// NOTE: this call leaves the tsd LOCKED !!!! | // NOTE: this call leaves the tsd LOCKED !!!! |
inline void *reference_tsd(const Sint8 *key) throw(IPCException) |
void* reference_tsd(TSD_Key key) |
{ |
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_tsd.lock(); |
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thread_data *tsd = _tsd.reference((const void *)key); |
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if(tsd != NULL) |
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return( (void *)(tsd->_data) ); |
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else |
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return(NULL); |
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} |
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inline void *try_reference_tsd(const Sint8 *key) throw(IPCException) |
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{ | { |
_tsd.try_lock(); |
if (_tsd[key]) |
thread_data *tsd = _tsd.reference((const void *)key); |
return _tsd[key]->get_data(); |
if(tsd != NULL) |
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return((void *)(tsd->_data) ); |
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else | else |
return(NULL); |
return 0; |
} | } |
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// release the lock held on the tsd | // release the lock held on the tsd |
// NOTE: assumes a corresponding and prior call to reference_tsd() !!! | // NOTE: assumes a corresponding and prior call to reference_tsd() !!! |
inline void dereference_tsd(void) throw(IPCException) |
void dereference_tsd() |
{ | { |
_tsd.unlock(); |
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} | } |
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// delete the tsd associated with the key | // delete the tsd associated with the key |
inline void delete_tsd(const Sint8 *key) throw(IPCException) |
void delete_tsd(TSD_Key key) |
{ |
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thread_data *tsd = _tsd.remove((const void *)key); |
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if(tsd != NULL) |
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delete tsd; |
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} |
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// Note: Caller must delete the thread_data object returned (if not null) |
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inline void *remove_tsd(const Sint8 *key) throw(IPCException) |
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{ |
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return(_tsd.remove((const void *)key)); |
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} |
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inline void empty_tsd(void) throw(IPCException) |
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{ | { |
thread_data* tsd; | thread_data* tsd; |
while (0 != (tsd = _tsd.remove_first())) |
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{ |
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delete tsd; |
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} |
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//_tsd.empty_list(); |
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} |
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// create or re-initialize tsd associated with the key |
tsd = _tsd[key]; |
// if the tsd already exists, delete the existing buffer |
_tsd[key] = 0; |
void put_tsd(const Sint8 *key, void (*delete_func)(void *), Uint32 size, void *value) |
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throw(IPCException) |
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{ |
if (tsd) |
PEGASUS_ASSERT(key != NULL); |
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thread_data *tsd ; |
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tsd = _tsd.remove((const void *)key); // may throw an IPC exception |
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delete tsd; | delete tsd; |
thread_data *ntsd = new thread_data(key); |
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ntsd->put_data(delete_func, size, value); |
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try { _tsd.insert_first(ntsd); } |
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catch(IPCException& e) { e = e; delete ntsd; throw; } |
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} | } |
inline PEGASUS_THREAD_RETURN get_exit(void) { return _exit_code; } |
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inline PEGASUS_THREAD_TYPE self(void) {return pegasus_thread_self(); } |
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PEGASUS_THREAD_HANDLE getThreadHandle() {return _handle;} |
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inline Boolean operator==(const void *key) const |
void empty_tsd() |
{ | { |
if ( (void *)this == key) |
thread_data* data[TSD_COUNT]; |
return(true); |
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return(false); |
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} |
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inline Boolean operator==(const Thread & b) const |
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{ |
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return(operator==((const void *)&b )); |
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} |
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void detach(void); |
memcpy(data, _tsd, sizeof(_tsd)); |
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memset(_tsd, 0, sizeof(_tsd)); |
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private: |
for (size_t i = 0; i < TSD_COUNT; i++) |
Thread(); |
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inline void create_tsd(const Sint8 *key ) throw(IPCException) |
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{ | { |
thread_data *tsd = new thread_data(key); |
if (data[i]) |
try { _tsd.insert_first(tsd); } |
delete data[i]; |
catch(IPCException& e) { e = e; delete tsd; throw; } |
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} | } |
PEGASUS_THREAD_HANDLE _handle; |
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Boolean _is_detached; |
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Boolean _cancel_enabled; |
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Boolean _cancelled; |
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PEGASUS_SEM_HANDLE _suspend_count; |
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// always pass this * as the void * parameter to the thread |
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// store the user parameter in _thread_parm |
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PEGASUS_THREAD_RETURN ( PEGASUS_THREAD_CDECL *_start)(void *) ; |
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DQueue<class cleanup_handler> _cleanup; |
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DQueue<class thread_data> _tsd; |
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void *_thread_parm; |
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PEGASUS_THREAD_RETURN _exit_code; |
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static Boolean _signals_blocked; |
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friend class ThreadPool; |
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} ; |
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class PEGASUS_COMMON_LINKAGE ThreadPool |
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{ |
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public: |
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ThreadPool(Sint16 initial_size, |
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const Sint8 *key, |
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Sint16 min, |
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Sint16 max, |
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struct timeval & alloc_wait, |
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struct timeval & dealloc_wait, |
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struct timeval & deadlock_detect); |
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~ThreadPool(void); |
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void allocate_and_awaken(void *parm, |
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PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *work)(void *), |
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Semaphore *blocking = 0) |
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throw(IPCException); |
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Uint32 kill_dead_threads( void ) |
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throw(IPCException); |
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void get_key(Sint8 *buf, int bufsize); |
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inline Boolean operator==(const void *key) const |
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{ |
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if ( ! strncmp( reinterpret_cast<Sint8 *>(const_cast<void *>(key)), _key, 16 )) |
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return(true); |
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return(false); |
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} |
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inline Boolean operator==(const ThreadPool & b) const |
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{ |
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return(operator==((const void *) b._key )); |
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} | } |
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inline void set_min_threads(Sint16 min) |
// create or re-initialize tsd associated with the key |
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// if the tsd already exists, delete the existing buffer |
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void put_tsd( |
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TSD_Key key, |
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void (*delete_func)(void*), |
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Uint32 size, |
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void* value) |
{ | { |
_min_threads = min; |
thread_data* tsd = new thread_data(key); |
} |
tsd->put_data(delete_func, size, value); |
| |
inline Sint16 get_min_threads(void) const |
thread_data* old; |
{ |
|
return _min_threads; |
|
} |
|
| |
inline void set_max_threads(Sint16 max) |
old = _tsd[key]; |
{ |
_tsd[key] = tsd; |
_max_threads = max; |
|
} |
|
| |
inline Sint16 get_max_threads(void) const |
if (old) |
{ |
delete old; |
return _max_threads; |
|
} | } |
| |
inline void set_allocate_wait(const struct timeval & alloc_wait) |
ThreadReturnType get_exit() |
{ | { |
_allocate_wait.tv_sec = alloc_wait.tv_sec; |
return _exit_code; |
_allocate_wait.tv_usec = alloc_wait.tv_usec; |
|
} | } |
| |
inline struct timeval *get_allocate_wait(struct timeval *buffer) const |
ThreadType self() |
{ | { |
if(buffer == 0) |
return Threads::self(); |
throw NullPointer(); |
|
buffer->tv_sec = _allocate_wait.tv_sec; |
|
buffer->tv_usec = _allocate_wait.tv_usec; |
|
return buffer; |
|
} | } |
| |
inline void set_deallocate_wait(const struct timeval & dealloc_wait) |
ThreadHandle getThreadHandle() |
{ | { |
_deallocate_wait.tv_sec = dealloc_wait.tv_sec; |
return _handle; |
_deallocate_wait.tv_usec = dealloc_wait.tv_usec; |
|
} | } |
| |
inline struct timeval *get_deallocate_wait(struct timeval *buffer) const |
Boolean isDetached() |
{ | { |
if(buffer == 0) |
return _is_detached; |
throw NullPointer(); |
|
buffer->tv_sec = _deallocate_wait.tv_sec; |
|
buffer->tv_usec = _deallocate_wait.tv_usec; |
|
return buffer; |
|
} | } |
| |
inline void set_deadlock_detect(const struct timeval & deadlock) |
void detach(); |
{ |
|
_deadlock_detect.tv_sec = deadlock.tv_sec; |
|
_deadlock_detect.tv_usec = deadlock.tv_usec; |
|
} |
|
| |
inline struct timeval * get_deadlock_detect(struct timeval *buffer) const |
// |
{ |
// Gets the Thread object associated with the caller's thread. |
if(buffer == 0) |
// Note: this may return NULL if no Thread object is associated |
throw NullPointer(); |
// with the caller's thread. |
buffer->tv_sec = _deadlock_detect.tv_sec; |
// |
buffer->tv_usec = _deadlock_detect.tv_usec; |
static Thread *getCurrent(); |
return buffer; |
|
} |
|
| |
inline Uint32 running_count(void) |
// |
{ |
// Sets the Thread object associated with the caller's thread. |
return _running.count(); |
// Note: the Thread object must be placed on the heap. |
} |
// |
|
static void setCurrent(Thread* thrd); |
| |
inline Uint32 pool_count(void) |
// |
{ |
// Gets the AcceptLanguageList object associated with the caller's |
return _pool.count(); |
// Thread. |
} |
// Note: this may return NULL if no Thread object, or no |
inline Uint32 dead_count(void) |
// AcceptLanguageList object, is associated with the caller's thread. |
{ |
// |
return _dead.count(); |
static AcceptLanguageList* getLanguages(); |
} |
|
| |
|
// |
|
// Sets the AcceptLanguageList object associated with the caller's |
|
// Thread. |
|
// Note: a Thread object must have been previously associated with |
|
// the caller's thread. |
|
// |
|
static void setLanguages(const AcceptLanguageList& langs); |
| |
static Boolean check_time(struct timeval *start, struct timeval *interval); |
// |
|
// Removes the AcceptLanguageList object associated with the caller's |
|
// Thread. |
|
// |
|
static void clearLanguages(); |
| |
private: | private: |
ThreadPool(void); |
Thread(); |
Sint16 _max_threads; |
|
Sint16 _min_threads; |
|
AtomicInt _current_threads; |
|
struct timeval _allocate_wait; |
|
struct timeval _deallocate_wait; |
|
struct timeval _deadlock_detect; |
|
static PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL _loop(void *); |
|
Sint8 _key[17]; |
|
DQueue<Thread> _pool; |
|
DQueue<Thread> _running; |
|
DQueue<Thread> _dead; |
|
AtomicInt _dying; |
|
|
|
|
|
static void _sleep_sem_del(void *p); |
|
|
|
void _check_deadlock(struct timeval *start) throw(Deadlock); |
|
Boolean _check_deadlock_no_throw(struct timeval *start); |
|
Boolean _check_dealloc(struct timeval *start); |
|
Thread *_init_thread(void) throw(IPCException); |
|
void _link_pool(Thread *th) throw(IPCException); |
|
static PEGASUS_THREAD_RETURN _undertaker(void *); |
|
|
|
}; |
|
|
|
|
|
inline void ThreadPool::_sleep_sem_del(void *p) |
|
{ |
|
if(p != 0) |
|
{ |
|
delete (Semaphore *)p; |
|
} |
|
} |
|
|
|
inline void ThreadPool::_check_deadlock(struct timeval *start) throw(Deadlock) |
|
{ |
|
if (true == check_time(start, &_deadlock_detect)) |
|
throw Deadlock(pegasus_thread_self()); |
|
return; |
|
} |
|
|
|
|
|
inline Boolean ThreadPool::_check_deadlock_no_throw(struct timeval *start) |
|
{ |
|
return(check_time(start, &_deadlock_detect)); |
|
} |
|
|
|
inline Boolean ThreadPool::_check_dealloc(struct timeval *start) |
|
{ |
|
return(check_time(start, &_deallocate_wait)); |
|
} |
|
|
|
inline Thread *ThreadPool::_init_thread(void) throw(IPCException) |
|
{ |
|
Thread *th = (Thread *) new Thread(_loop, this, false); |
|
// allocate a sleep semaphore and pass it in the thread context |
|
// initial count is zero, loop function will sleep until |
|
// we signal the semaphore |
|
Semaphore *sleep_sem = (Semaphore *) new Semaphore(0); |
|
th->put_tsd("sleep sem", &_sleep_sem_del, sizeof(Semaphore), (void *)sleep_sem); |
|
| |
struct timeval *dldt = (struct timeval *) ::operator new(sizeof(struct timeval)); |
static Sint8 initializeKey(); |
th->put_tsd("deadlock timer", thread_data::default_delete, sizeof(struct timeval), (void *)dldt); |
|
// thread will enter _loop(void *) and sleep on sleep_sem until we signal it |
|
th->run(); |
|
_current_threads++; |
|
pegasus_yield(); |
|
| |
return th; |
ThreadHandle _handle; |
} |
Boolean _is_detached; |
|
Boolean _cancelled; |
| |
inline void ThreadPool::_link_pool(Thread *th) throw(IPCException) |
// always pass this * as the void * parameter to the thread |
{ |
// store the user parameter in _thread_parm |
if(th == 0) |
|
throw NullPointer(); |
|
_pool.insert_first(th); |
|
} |
|
| |
|
ThreadReturnType(PEGASUS_THREAD_CDECL* _start) (void *); |
|
List<cleanup_handler, Mutex> _cleanup; |
|
thread_data* _tsd[TSD_COUNT]; |
| |
#if defined(PEGASUS_OS_TYPE_WINDOWS) |
void* _thread_parm; |
# include "ThreadWindows_inline.h" |
ThreadReturnType _exit_code; |
#elif defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM) |
static Boolean _signals_blocked; |
# include "ThreadzOS_inline.h" |
static TSDKeyType _platform_thread_key; |
#elif defined(PEGASUS_OS_TYPE_UNIX) |
static Boolean _key_initialized; |
# include "ThreadUnix_inline.h" |
static Boolean _key_error; |
#endif |
}; |
| |
PEGASUS_NAMESPACE_END | PEGASUS_NAMESPACE_END |
| |