version 1.72, 2004/10/25 18:26:02
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version 1.90.2.3, 2006/07/28 20:46:41
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//%2004//////////////////////////////////////////////////////////////////////// |
//%2006//////////////////////////////////////////////////////////////////////// |
// | // |
// Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development | // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development |
// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems. | // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems. |
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// IBM Corp.; EMC Corporation, The Open Group. | // IBM Corp.; EMC Corporation, The Open Group. |
// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.; | // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.; |
// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group. | // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group. |
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// Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.; |
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// EMC Corporation; VERITAS Software Corporation; The Open Group. |
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// Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.; |
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// EMC Corporation; Symantec Corporation; The Open Group. |
// | // |
// 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 copy |
// of this software and associated documentation files (the "Software"), to | // of this software and associated documentation files (the "Software"), to |
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// added nsk platform support | // added nsk platform support |
// Roger Kumpf, Hewlett-Packard Company (roger_kumpf@hp.com) | // Roger Kumpf, Hewlett-Packard Company (roger_kumpf@hp.com) |
// Amit K Arora, IBM (amita@in.ibm.com) for PEP#101 | // Amit K Arora, IBM (amita@in.ibm.com) for PEP#101 |
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// Sean Keenan, Hewlett-Packard Company (sean.keenan@hp.com) |
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// David Dillard, VERITAS Software Corp. |
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// (david.dillard@veritas.com) |
// | // |
//%///////////////////////////////////////////////////////////////////////////// | //%///////////////////////////////////////////////////////////////////////////// |
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#include "Thread.h" | #include "Thread.h" |
#include <exception> | #include <exception> |
#include <Pegasus/Common/IPC.h> |
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#include <Pegasus/Common/Tracer.h> | #include <Pegasus/Common/Tracer.h> |
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#include "Time.h" |
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#if defined(PEGASUS_OS_TYPE_WINDOWS) | #if defined(PEGASUS_OS_TYPE_WINDOWS) |
# include "ThreadWindows.cpp" | # include "ThreadWindows.cpp" |
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# include "ThreadUnix.cpp" | # include "ThreadUnix.cpp" |
#elif defined(PEGASUS_OS_TYPE_NSK) | #elif defined(PEGASUS_OS_TYPE_NSK) |
# include "ThreadNsk.cpp" | # include "ThreadNsk.cpp" |
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#elif defined(PEGASUS_OS_VMS) |
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# include "ThreadVms.cpp" |
#else | #else |
# error "Unsupported platform" | # error "Unsupported platform" |
#endif | #endif |
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{ | { |
if( data != NULL) | if( data != NULL) |
{ | { |
AutoPtr<AcceptLanguages> al(static_cast<AcceptLanguages *>(data)); |
AutoPtr<AcceptLanguageList> al(static_cast<AcceptLanguageList *>(data)); |
} | } |
} | } |
// l10n end | // l10n end |
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Boolean Thread::_signals_blocked = false; | Boolean Thread::_signals_blocked = false; |
// l10n | // l10n |
#ifndef PEGASUS_OS_ZOS | #ifndef PEGASUS_OS_ZOS |
PEGASUS_THREAD_KEY_TYPE Thread::_platform_thread_key = -1; |
TSDKeyType Thread::_platform_thread_key = TSDKeyType(-1); |
#else | #else |
PEGASUS_THREAD_KEY_TYPE Thread::_platform_thread_key; |
TSDKeyType Thread::_platform_thread_key; |
#endif | #endif |
Boolean Thread::_key_initialized = false; | Boolean Thread::_key_initialized = false; |
Boolean Thread::_key_error = false; | Boolean Thread::_key_error = false; |
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// for non-native implementations |
void Thread::cleanup_push( void (*routine)(void *), void *parm) |
#ifndef PEGASUS_THREAD_CLEANUP_NATIVE |
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void Thread::cleanup_push( void (*routine)(void *), void *parm) throw(IPCException) |
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{ | { |
AutoPtr<cleanup_handler> cu(new cleanup_handler(routine, parm)); | AutoPtr<cleanup_handler> cu(new cleanup_handler(routine, parm)); |
_cleanup.insert_first(cu.get()); |
_cleanup.insert_front(cu.get()); |
cu.release(); | cu.release(); |
return; | return; |
} | } |
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void Thread::cleanup_pop(Boolean execute) throw(IPCException) |
void Thread::cleanup_pop(Boolean execute) |
{ | { |
AutoPtr<cleanup_handler> cu ; | AutoPtr<cleanup_handler> cu ; |
try | try |
{ | { |
cu.reset(_cleanup.remove_first()); |
cu.reset(_cleanup.remove_front()); |
} | } |
catch(IPCException&) | catch(IPCException&) |
{ | { |
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cu->execute(); | cu->execute(); |
} | } |
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#endif |
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//thread_data *Thread::put_tsd(const Sint8 *key, void (*delete_func)(void *), Uint32 size, void *value) throw(IPCException) |
//thread_data *Thread::put_tsd(const Sint8 *key, void (*delete_func)(void *), Uint32 size, void *value) |
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#ifndef PEGASUS_THREAD_EXIT_NATIVE | #ifndef PEGASUS_THREAD_EXIT_NATIVE |
void Thread::exit_self(PEGASUS_THREAD_RETURN exit_code) |
void Thread::exit_self(ThreadReturnType exit_code) |
{ | { |
// execute the cleanup stack and then return | // execute the cleanup stack and then return |
while( _cleanup.count() ) |
while( _cleanup.size() ) |
{ | { |
try | try |
{ | { |
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} | } |
} | } |
_exit_code = exit_code; | _exit_code = exit_code; |
exit_thread(exit_code); |
Threads::exit(exit_code); |
_handle.thid = 0; |
Threads::clear(_handle.thid); |
} | } |
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return -1; | return -1; |
} | } |
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if (pegasus_key_create(&Thread::_platform_thread_key) == 0) |
if (TSDKey::create(&Thread::_platform_thread_key) == 0) |
{ | { |
Tracer::trace(TRC_THREAD, Tracer::LEVEL4, | Tracer::trace(TRC_THREAD, Tracer::LEVEL4, |
"Thread: able to create a thread key"); | "Thread: able to create a thread key"); |
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return NULL; | return NULL; |
} | } |
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
return (Thread *)pegasus_get_thread_specific(_platform_thread_key); |
return (Thread *)TSDKey::get_thread_specific(_platform_thread_key); |
} | } |
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void Thread::setCurrent(Thread * thrd) | void Thread::setCurrent(Thread * thrd) |
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PEG_METHOD_ENTER(TRC_THREAD, "Thread::setCurrent"); | PEG_METHOD_ENTER(TRC_THREAD, "Thread::setCurrent"); |
if (Thread::initializeKey() == 0) | if (Thread::initializeKey() == 0) |
{ | { |
if (pegasus_set_thread_specific(Thread::_platform_thread_key, |
if (TSDKey::set_thread_specific( |
(void *) thrd) == 0) |
Thread::_platform_thread_key, (void *) thrd) == 0) |
{ | { |
Tracer::trace(TRC_THREAD, Tracer::LEVEL4, | Tracer::trace(TRC_THREAD, Tracer::LEVEL4, |
"Successful set Thread * into thread specific storage"); | "Successful set Thread * into thread specific storage"); |
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else | else |
{ | { |
Tracer::trace(TRC_THREAD, Tracer::LEVEL4, | Tracer::trace(TRC_THREAD, Tracer::LEVEL4, |
"ERROR: got error setting Thread * into thread specific storage"); |
"ERROR: error setting Thread * into thread specific storage"); |
} | } |
} | } |
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
} | } |
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AcceptLanguages * Thread::getLanguages() |
AcceptLanguageList * Thread::getLanguages() |
{ | { |
PEG_METHOD_ENTER(TRC_THREAD, "Thread::getLanguages"); | PEG_METHOD_ENTER(TRC_THREAD, "Thread::getLanguages"); |
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Thread * curThrd = Thread::getCurrent(); | Thread * curThrd = Thread::getCurrent(); |
if (curThrd == NULL) | if (curThrd == NULL) |
return NULL; | return NULL; |
AcceptLanguages * acceptLangs = |
AcceptLanguageList * acceptLangs = |
(AcceptLanguages *)curThrd->reference_tsd("acceptLanguages"); |
(AcceptLanguageList *)curThrd->reference_tsd("acceptLanguages"); |
curThrd->dereference_tsd(); | curThrd->dereference_tsd(); |
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
return acceptLangs; | return acceptLangs; |
} | } |
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void Thread::setLanguages(AcceptLanguages *langs) //l10n |
void Thread::setLanguages(AcceptLanguageList *langs) //l10n |
{ | { |
PEG_METHOD_ENTER(TRC_THREAD, "Thread::setLanguages"); | PEG_METHOD_ENTER(TRC_THREAD, "Thread::setLanguages"); |
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// deletes the old tsd and creates a new one | // deletes the old tsd and creates a new one |
currentThrd->put_tsd("acceptLanguages", | currentThrd->put_tsd("acceptLanguages", |
language_delete, | language_delete, |
sizeof(AcceptLanguages *), |
sizeof(AcceptLanguageList *), |
langs); | langs); |
} | } |
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} | } |
// l10n end | // l10n end |
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#if 0 |
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// two special synchronization classes for ThreadPool |
/////////////////////////////////////////////////////////////////////////////// |
// | // |
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// ThreadPool |
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// |
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/////////////////////////////////////////////////////////////////////////////// |
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class timed_mutex |
ThreadPool::ThreadPool( |
{ |
Sint16 initialSize, |
public: |
const char* key, |
timed_mutex(Mutex* mut, int msec) |
Sint16 minThreads, |
:_mut(mut) |
Sint16 maxThreads, |
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struct timeval& deallocateWait) |
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: _maxThreads(maxThreads), |
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_minThreads(minThreads), |
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_currentThreads(0), |
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_idleThreads(), |
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_runningThreads(), |
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_dying(0) |
{ | { |
_mut->timed_lock(msec, pegasus_thread_self()); |
_deallocateWait.tv_sec = deallocateWait.tv_sec; |
} |
_deallocateWait.tv_usec = deallocateWait.tv_usec; |
~timed_mutex(void) |
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{ |
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_mut->unlock(); |
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} |
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Mutex* _mut; |
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}; |
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#endif |
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class try_mutex |
memset(_key, 0x00, 17); |
{ |
if (key != 0) |
public: |
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try_mutex(Mutex* mut) |
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:_mut(mut) |
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{ |
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_mut->try_lock(pegasus_thread_self()); |
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} |
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~try_mutex(void) |
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{ | { |
_mut->unlock(); |
strncpy(_key, key, 16); |
} | } |
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Mutex* _mut; |
if ((_maxThreads > 0) && (_maxThreads < initialSize)) |
}; |
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class auto_int |
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{ |
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public: |
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auto_int(AtomicInt* num) |
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: _int(num) |
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{ |
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_int->operator++(); |
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} |
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~auto_int(void) |
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{ | { |
_int->operator--(); |
_maxThreads = initialSize; |
} | } |
AtomicInt *_int; |
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}; |
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AtomicInt _idle_control; |
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DQueue<ThreadPool> ThreadPool::_pools(true); |
if (_minThreads > initialSize) |
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void ThreadPool::kill_idle_threads(void) |
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{ |
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static struct timeval now, last = {0, 0}; |
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pegasus_gettimeofday(&now); |
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if(now.tv_sec - last.tv_sec > 5) |
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{ |
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_pools.lock(); |
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ThreadPool *p = _pools.next(0); |
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while(p != 0) |
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{ |
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try |
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{ | { |
p->kill_dead_threads(); |
_minThreads = initialSize; |
} | } |
catch(...) |
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{ |
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} |
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p = _pools.next(p); |
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} |
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_pools.unlock(); |
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pegasus_gettimeofday(&last); |
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} |
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} |
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ThreadPool::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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: _max_threads(max), _min_threads(min), |
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_current_threads(0), |
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_pool(true), _running(true), |
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_dead(true), _dying(0) |
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{ |
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_allocate_wait.tv_sec = alloc_wait.tv_sec; |
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_allocate_wait.tv_usec = alloc_wait.tv_usec; |
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_deallocate_wait.tv_sec = dealloc_wait.tv_sec; |
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_deallocate_wait.tv_usec = dealloc_wait.tv_usec; |
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_deadlock_detect.tv_sec = deadlock_detect.tv_sec; |
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_deadlock_detect.tv_usec = deadlock_detect.tv_usec; |
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memset(_key, 0x00, 17); |
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if(key != 0) |
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strncpy(_key, key, 16); |
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if(_max_threads > 0 && _max_threads < initial_size) |
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_max_threads = initial_size; |
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if(_min_threads > initial_size) |
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_min_threads = initial_size; |
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int i; |
for (int i = 0; i < initialSize; i++) |
for(i = 0; i < initial_size; i++) |
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{ | { |
_link_pool(_init_thread()); |
_addToIdleThreadsQueue(_initializeThread()); |
} | } |
_pools.insert_last(this); |
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} | } |
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ThreadPool::~ThreadPool() |
// Note: <<< Fri Oct 17 09:19:03 2003 mdd >>> |
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// the pegasus_yield() calls that preceed each th->join() are to |
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// give a thread on the running list a chance to reach a cancellation |
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// point before the join |
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ThreadPool::~ThreadPool(void) |
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{ | { |
PEG_METHOD_ENTER(TRC_THREAD, "Thread::~ThreadPool"); |
PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::~ThreadPool"); |
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try | try |
{ | { |
// Set the dying flag so all thread know the destructor has been entered | // Set the dying flag so all thread know the destructor has been entered |
_dying++; | _dying++; |
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Tracer::trace(TRC_THREAD, Tracer::LEVEL2, |
// remove from the global pools list |
"Cleaning up %d idle threads. ", _currentThreads.get()); |
_pools.remove(this); |
while (_currentThreads.get() > 0) |
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// start with idle threads. |
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Thread *th = 0; |
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th = _pool.remove_first(); |
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Semaphore* sleep_sem; |
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while(th != 0) |
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{ |
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sleep_sem = (Semaphore *)th->reference_tsd("sleep sem"); |
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PEGASUS_ASSERT(sleep_sem != 0); |
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if(sleep_sem == 0) |
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{ |
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th->dereference_tsd(); |
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} |
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else |
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{ |
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// Signal to get the thread out of the work loop. |
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sleep_sem->signal(); |
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// Signal to get the thread past the end. See the comment |
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// "wait to be awakend by the thread pool destructor" |
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// Note: the current implementation of Thread for Windows |
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// does not implement "pthread" cancelation points so this |
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// is needed. |
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sleep_sem->signal(); |
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th->dereference_tsd(); |
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th->join(); |
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delete th; |
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} |
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th = _pool.remove_first(); |
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} |
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while(_idle_control.value()) |
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pegasus_yield(); |
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th = _dead.remove_first(); |
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while(th != 0) |
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{ |
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sleep_sem = (Semaphore *)th->reference_tsd("sleep sem"); |
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PEGASUS_ASSERT(sleep_sem != 0); |
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if(sleep_sem == 0) |
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{ |
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th->dereference_tsd(); |
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} |
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else |
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{ |
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//ATTN-DME-P3-20030322: _dead queue processing in |
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//ThreadPool::~ThreadPool is inconsistent with the |
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//processing in kill_dead_threads. Is this correct? |
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// signal the thread's sleep semaphore |
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sleep_sem->signal(); |
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sleep_sem->signal(); |
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th->dereference_tsd(); |
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th->join(); |
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delete th; |
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} |
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th = _dead.remove_first(); |
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} |
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{ |
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th = _running.remove_first(); |
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while(th != 0) |
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{ | { |
// signal the thread's sleep semaphore |
Thread* thread = _idleThreads.remove_front(); |
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if (thread != 0) |
sleep_sem = (Semaphore *)th->reference_tsd("sleep sem"); |
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PEGASUS_ASSERT(sleep_sem != 0); |
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if(sleep_sem == 0 ) |
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{ | { |
th->dereference_tsd(); |
_cleanupThread(thread); |
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_currentThreads--; |
} | } |
else | else |
{ | { |
sleep_sem->signal(); |
Threads::yield(); |
sleep_sem->signal(); |
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th->dereference_tsd(); |
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//th->cancel(); |
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pegasus_yield(); |
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th->join(); |
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delete th; |
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} |
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th = _running.remove_first(); |
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} | } |
} | } |
} | } |
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catch(...) | catch(...) |
{ | { |
} | } |
} | } |
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// make this static to the class |
ThreadReturnType PEGASUS_THREAD_CDECL ThreadPool::_loop(void* parm) |
PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL ThreadPool::_loop(void *parm) |
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{ | { |
PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::_loop"); | PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::_loop"); |
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Thread *myself = (Thread *)parm; |
try |
if(myself == 0) |
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{ | { |
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
Thread* myself = (Thread *)parm; |
"ThreadPool::_loop: Thread pointer is null"); |
PEGASUS_ASSERT(myself != 0); |
PEG_METHOD_EXIT(); |
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throw NullPointer(); |
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} |
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// l10n |
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// Set myself into thread specific storage | // Set myself into thread specific storage |
// This will allow code to get its own Thread | // This will allow code to get its own Thread |
Thread::setCurrent(myself); | Thread::setCurrent(myself); |
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ThreadPool *pool = (ThreadPool *)myself->get_parm(); | ThreadPool *pool = (ThreadPool *)myself->get_parm(); |
if(pool == 0 ) |
PEGASUS_ASSERT(pool != 0); |
{ |
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Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
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"ThreadPool::_loop: ThreadPool pointer is null"); |
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PEG_METHOD_EXIT(); |
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throw NullPointer(); |
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} |
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if(pool->_dying.value()) |
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{ |
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Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
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"ThreadPool::_loop: ThreadPool is dying(1)"); |
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PEG_METHOD_EXIT(); |
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return((PEGASUS_THREAD_RETURN)0); |
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} |
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Semaphore *sleep_sem = 0; | Semaphore *sleep_sem = 0; |
Semaphore *blocking_sem = 0; |
struct timeval* lastActivityTime = 0; |
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struct timeval *deadlock_timer = 0; |
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try | try |
{ | { |
sleep_sem = (Semaphore *)myself->reference_tsd("sleep sem"); | sleep_sem = (Semaphore *)myself->reference_tsd("sleep sem"); |
myself->dereference_tsd(); | myself->dereference_tsd(); |
deadlock_timer = (struct timeval *)myself->reference_tsd("deadlock timer"); |
PEGASUS_ASSERT(sleep_sem != 0); |
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lastActivityTime = |
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(struct timeval *)myself->reference_tsd("last activity time"); |
myself->dereference_tsd(); | myself->dereference_tsd(); |
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PEGASUS_ASSERT(lastActivityTime != 0); |
} | } |
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catch(...) | catch(...) |
{ | { |
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, | Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
"ThreadPool::_loop: Failure getting sleep_sem or deadlock_timer."); |
"ThreadPool::_loop: Failure getting sleep_sem or " |
_graveyard(myself); |
"lastActivityTime."); |
PEG_METHOD_EXIT(); |
PEGASUS_ASSERT(false); |
return((PEGASUS_THREAD_RETURN)0); |
pool->_idleThreads.remove(myself); |
} |
pool->_currentThreads--; |
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if(sleep_sem == 0 || deadlock_timer == 0) |
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{ |
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Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
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"ThreadPool::_loop: sleep_sem or deadlock_timer are null."); |
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_graveyard(myself); |
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PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
return((PEGASUS_THREAD_RETURN)0); |
return((ThreadReturnType)1); |
} | } |
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while(1) | while(1) |
{ | { |
if(pool->_dying.value()) |
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break; |
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try | try |
{ | { |
Boolean ignoreInterrupt = false; |
sleep_sem->wait(); |
sleep_sem->wait(ignoreInterrupt); |
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} | } |
catch (WaitInterrupted &e) |
catch (...) |
{ |
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/* From the sem_wait manpage: |
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The sem_trywait() and sem_wait() functions may fail if: |
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EINTR A signal interrupted this function. |
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*/ |
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PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
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"Sleep semaphore wait failed. Doing a continue"); |
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continue; |
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} |
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catch(IPCException& ) |
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{ | { |
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, | Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
"ThreadPool::_loop: failure on sleep_sem->wait()."); | "ThreadPool::_loop: failure on sleep_sem->wait()."); |
_graveyard(myself); |
PEGASUS_ASSERT(false); |
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pool->_idleThreads.remove(myself); |
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pool->_currentThreads--; |
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
return((PEGASUS_THREAD_RETURN)0); |
return((ThreadReturnType)1); |
} | } |
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// when we awaken we reside on the running queue, not the pool queue |
// When we awaken we reside on the _runningThreads queue, not the |
/* Hence no need to move the thread to the _dead queue, as the _running |
// _idleThreads queue. |
* queue is only dused by kill_dead_threads which makes sure that the |
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* the threads are cleaned up (unlocking any locked lists in the TSD, etc) |
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* before killing it. |
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*/ |
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PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *_work)(void *) = 0; |
ThreadReturnType (PEGASUS_THREAD_CDECL* work)(void *) = 0; |
void *parm = 0; | void *parm = 0; |
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Semaphore* blocking_sem = 0; |
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try | try |
{ | { |
_work = (PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *)(void *)) \ |
work = (ThreadReturnType (PEGASUS_THREAD_CDECL *)(void *)) |
myself->reference_tsd("work func"); | myself->reference_tsd("work func"); |
myself->dereference_tsd(); | myself->dereference_tsd(); |
parm = myself->reference_tsd("work parm"); | parm = myself->reference_tsd("work parm"); |
myself->dereference_tsd(); | myself->dereference_tsd(); |
blocking_sem = (Semaphore *)myself->reference_tsd("blocking sem"); | blocking_sem = (Semaphore *)myself->reference_tsd("blocking sem"); |
myself->dereference_tsd(); | myself->dereference_tsd(); |
|
|
} | } |
catch(IPCException &) |
catch (...) |
{ |
|
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
|
"ThreadPool::_loop: Failure accessing work func, work parm, or blocking sem."); |
|
/* |
|
* We cannot move ourselves to the dead queue b/c the TSD might be still |
|
* locked and _graveyard is not equipped to de-lock (dereference_tsd) the TSD. |
|
* Only the kill_dead_threads has enough logic to handle such situations. |
|
_graveyard( myself); |
|
*/ |
|
PEG_METHOD_EXIT(); |
|
return((PEGASUS_THREAD_RETURN)0); |
|
} |
|
|
|
if(_work == 0) |
|
{ | { |
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, | Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
"ThreadPool::_loop: work func is null."); |
"ThreadPool::_loop: Failure accessing work func, work parm, " |
|
"or blocking sem."); |
|
PEGASUS_ASSERT(false); |
|
pool->_idleThreads.remove(myself); |
|
pool->_currentThreads--; |
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
return((PEGASUS_THREAD_RETURN)0); |
return((ThreadReturnType)1); |
} | } |
| |
if(_work == |
if (work == 0) |
(PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *)(void *)) &_undertaker) |
|
{ | { |
/* |
Tracer::trace(TRC_THREAD, Tracer::LEVEL4, |
* The undertaker is set by ThreadPool::kill_dead_threads which awakens this thread, |
"ThreadPool::_loop: work func is 0, meaning we should exit."); |
* joins it and then removes it from the queue. Hence no reason to go to the |
break; |
_graveyard( myself); |
|
*/ |
|
PEG_METHOD_EXIT(); |
|
_work(parm); |
|
} | } |
| |
gettimeofday(deadlock_timer, NULL); |
Time::gettimeofday(lastActivityTime); |
| |
if (pool->_dying.value() == 0) |
|
{ |
|
try | try |
{ | { |
PEG_TRACE_STRING(TRC_THREAD, Tracer::LEVEL4, |
PEG_TRACE_STRING(TRC_THREAD, Tracer::LEVEL4, "Work starting."); |
"Worker started"); |
work(parm); |
_work(parm); |
PEG_TRACE_STRING(TRC_THREAD, Tracer::LEVEL4, "Work finished."); |
PEG_TRACE_STRING(TRC_THREAD, Tracer::LEVEL4, |
|
"Worker finished"); |
|
} | } |
catch(Exception & e) | catch(Exception & e) |
{ | { |
PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2, | PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
String("Exception from _work in ThreadPool::_loop: ") + |
String("Exception from work in ThreadPool::_loop: ") + |
e.getMessage()); | e.getMessage()); |
PEG_METHOD_EXIT(); |
|
return((PEGASUS_THREAD_RETURN)0); |
|
} | } |
#if !defined(PEGASUS_OS_LSB) | #if !defined(PEGASUS_OS_LSB) |
catch (exception& e) |
catch (const exception& e) |
{ | { |
PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2, | PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
String("Exception from _work in ThreadPool::_loop: ") + |
String("Exception from work in ThreadPool::_loop: ") + |
e.what()); | e.what()); |
PEG_METHOD_EXIT(); |
|
return((PEGASUS_THREAD_RETURN)0); |
|
} | } |
#endif | #endif |
catch(...) | catch(...) |
{ | { |
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
"ThreadPool::_loop: execution of _work failed."); |
"Unknown exception from work in ThreadPool::_loop."); |
PEG_METHOD_EXIT(); |
|
return((PEGASUS_THREAD_RETURN)0); |
|
} |
|
} | } |
| |
// put myself back onto the available list | // put myself back onto the available list |
try | try |
{ | { |
if(pool->_dying.value() == 0) |
Time::gettimeofday(lastActivityTime); |
{ |
|
gettimeofday(deadlock_timer, NULL); |
|
if( blocking_sem != 0 ) | if( blocking_sem != 0 ) |
|
{ |
blocking_sem->signal(); | blocking_sem->signal(); |
|
} |
| |
// If we are not on _running then ~ThreadPool has removed |
pool->_runningThreads.remove(myself); |
// us and now "owns" our pointer. |
pool->_idleThreads.insert_front(myself); |
if ( pool->_running.remove((void *)myself) != 0 ) |
|
{ |
|
pool->_pool.insert_first(myself); |
|
} | } |
else |
catch (...) |
{ | { |
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, | Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
"ThreadPool::_loop: Failed to remove thread from running queue."); |
"ThreadPool::_loop: Adding thread to idle pool failed."); |
|
PEGASUS_ASSERT(false); |
|
pool->_currentThreads--; |
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
return((PEGASUS_THREAD_RETURN)0); |
return((ThreadReturnType)1); |
} | } |
} | } |
else |
|
{ |
|
PEG_METHOD_EXIT(); |
|
return((PEGASUS_THREAD_RETURN)0); |
|
} | } |
|
catch (const Exception& e) |
|
{ |
|
PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
|
"Caught exception: \"" + e.getMessage() + "\". Exiting _loop."); |
} | } |
catch(...) | catch(...) |
{ | { |
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
"ThreadPool::_loop: Adding thread to idle pool failed."); |
"Caught unrecognized exception. Exiting _loop."); |
PEG_METHOD_EXIT(); |
|
return((PEGASUS_THREAD_RETURN)0); |
|
} |
|
|
|
} | } |
| |
// TODO: Why is this needed? Why not just continue? |
|
// wait to be awakend by the thread pool destructor |
|
//sleep_sem->wait(); |
|
|
|
myself->test_cancel(); |
|
|
|
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
return((PEGASUS_THREAD_RETURN)0); |
return((ThreadReturnType)0); |
} | } |
| |
Boolean ThreadPool::allocate_and_awaken(void *parm, |
ThreadStatus ThreadPool::allocate_and_awaken( |
PEGASUS_THREAD_RETURN \ |
void* parm, |
(PEGASUS_THREAD_CDECL *work)(void *), |
ThreadReturnType (PEGASUS_THREAD_CDECL* work)(void *), |
Semaphore *blocking) | Semaphore *blocking) |
throw(IPCException) |
|
{ | { |
PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::allocate_and_awaken"); | PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::allocate_and_awaken"); |
| |
|
|
| |
try | try |
{ | { |
if (_dying.value()) |
if (_dying.get()) |
{ | { |
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, | Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
"ThreadPool::allocate_and_awaken: ThreadPool is dying(1)."); | "ThreadPool::allocate_and_awaken: ThreadPool is dying(1)."); |
// ATTN: Error result has not yet been defined |
return PEGASUS_THREAD_UNAVAILABLE; |
return true; |
|
} | } |
struct timeval start; | struct timeval start; |
gettimeofday(&start, NULL); |
Time::gettimeofday(&start); |
Thread *th = 0; | Thread *th = 0; |
| |
th = _pool.remove_first(); |
th = _idleThreads.remove_front(); |
| |
if (th == 0) | if (th == 0) |
{ | { |
// will throw an IPCException& |
if ((_maxThreads == 0) || |
_check_deadlock(&start) ; |
(_currentThreads.get() < Uint32(_maxThreads))) |
|
|
if(_max_threads == 0 || _current_threads < _max_threads) |
|
{ | { |
th = _init_thread(); |
th = _initializeThread(); |
} | } |
} | } |
| |
|
|
// necessarily imply that a failure has occurred. However, | // necessarily imply that a failure has occurred. However, |
// this label is being used temporarily to help isolate | // this label is being used temporarily to help isolate |
// the cause of client timeout problems. | // the cause of client timeout problems. |
|
|
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, | Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
"ThreadPool::allocate_and_awaken: Insufficient resources: " | "ThreadPool::allocate_and_awaken: Insufficient resources: " |
" pool = %s, running threads = %d, idle threads = %d, dead threads = %d ", |
" pool = %s, running threads = %d, idle threads = %d", |
_key, _running.count(), _pool.count(), _dead.count()); |
_key, _runningThreads.size(), _idleThreads.size()); |
return false; |
return PEGASUS_THREAD_INSUFFICIENT_RESOURCES; |
} | } |
| |
// initialize the thread data with the work function and parameters | // initialize the thread data with the work function and parameters |
|
|
| |
th->delete_tsd("work func"); | th->delete_tsd("work func"); |
th->put_tsd("work func", NULL, | th->put_tsd("work func", NULL, |
sizeof( PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *)(void *)), |
sizeof( ThreadReturnType (PEGASUS_THREAD_CDECL *)(void *)), |
(void *)work); | (void *)work); |
th->delete_tsd("work parm"); | th->delete_tsd("work parm"); |
th->put_tsd("work parm", NULL, sizeof(void *), parm); | th->put_tsd("work parm", NULL, sizeof(void *), parm); |
|
|
th->put_tsd("blocking sem", NULL, sizeof(Semaphore *), blocking); | th->put_tsd("blocking sem", NULL, sizeof(Semaphore *), blocking); |
| |
// put the thread on the running list | // put the thread on the running list |
_running.insert_first(th); |
_runningThreads.insert_front(th); |
| |
// signal the thread's sleep semaphore to awaken it | // signal the thread's sleep semaphore to awaken it |
Semaphore *sleep_sem = (Semaphore *)th->reference_tsd("sleep sem"); | Semaphore *sleep_sem = (Semaphore *)th->reference_tsd("sleep sem"); |
|
PEGASUS_ASSERT(sleep_sem != 0); |
| |
if(sleep_sem == 0) |
|
{ |
|
th->dereference_tsd(); |
|
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
|
"ThreadPool::allocate_and_awaken: thread data is corrupted."); |
|
PEG_METHOD_EXIT(); |
|
throw NullPointer(); |
|
} |
|
Tracer::trace(TRC_THREAD, Tracer::LEVEL4, "Signal thread to awaken"); | Tracer::trace(TRC_THREAD, Tracer::LEVEL4, "Signal thread to awaken"); |
sleep_sem->signal(); | sleep_sem->signal(); |
th->dereference_tsd(); | th->dereference_tsd(); |
|
|
"ThreadPool::allocate_and_awaken: Operation Failed."); | "ThreadPool::allocate_and_awaken: Operation Failed."); |
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
// ATTN: Error result has not yet been defined | // ATTN: Error result has not yet been defined |
return true; |
return PEGASUS_THREAD_SETUP_FAILURE; |
} | } |
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
return true; |
return PEGASUS_THREAD_OK; |
} | } |
| |
// caller is responsible for only calling this routine during slack periods | // caller is responsible for only calling this routine during slack periods |
// but should call it at least once per _deadlock_detect with the running q |
// but should call it at least once per _deallocateWait interval. |
// and at least once per _deallocate_wait for the pool q |
|
| |
Uint32 ThreadPool::kill_dead_threads(void) |
Uint32 ThreadPool::cleanupIdleThreads() |
throw(IPCException) |
|
{ | { |
// Since the kill_dead_threads, ThreadPool or allocate_and_awaken |
PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::cleanupIdleThreads"); |
// manipulate the threads on the ThreadPool queues, they should never |
|
// be allowed to run at the same time. |
|
|
|
PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::kill_dead_threads"); |
|
// << Thu Oct 23 14:41:02 2003 mdd >> |
|
// not true, the queues are thread safe. they are syncrhonized. |
|
| |
auto_int do_not_destruct(&_idle_control); |
Uint32 numThreadsCleanedUp = 0; |
| |
try |
Uint32 numIdleThreads = _idleThreads.size(); |
|
for (Uint32 i = 0; i < numIdleThreads; i++) |
{ | { |
if (_dying.value()) |
// Do not dip below the minimum thread count |
|
if (_currentThreads.get() <= (Uint32)_minThreads) |
{ | { |
return 0; |
break; |
} | } |
| |
struct timeval now; |
Thread* thread = _idleThreads.remove_back(); |
gettimeofday(&now, NULL); |
|
Uint32 bodies = 0; |
|
AtomicInt needed(0); |
|
|
|
// first go thread the dead q and clean it up as much as possible |
|
try |
|
{ |
|
while(_dying.value() == 0 && _dead.count() > 0) |
|
{ |
|
Tracer::trace(TRC_THREAD, Tracer::LEVEL4, "ThreadPool:: removing and joining dead thread"); |
|
Thread *dead = _dead.remove_first(); |
|
|
|
if(dead ) |
|
{ |
|
dead->join(); |
|
delete dead; |
|
} |
|
} |
|
} |
|
catch(...) |
|
{ |
|
Tracer::trace(TRC_THREAD, Tracer::LEVEL4, "Exception when deleting dead"); |
|
} |
|
| |
if (_dying.value()) |
// If there are no more threads in the _idleThreads queue, we're done. |
|
if (thread == 0) |
{ | { |
return 0; |
break; |
} | } |
| |
Thread *th = 0; |
struct timeval* lastActivityTime; |
internal_dq idq; |
|
|
|
if(_pool.count() > 0 ) |
|
{ |
|
try | try |
{ | { |
_pool.try_lock(); |
lastActivityTime = (struct timeval *)thread->try_reference_tsd( |
|
"last activity time"); |
|
PEGASUS_ASSERT(lastActivityTime != 0); |
} | } |
catch(...) | catch(...) |
{ | { |
return bodies; |
PEGASUS_ASSERT(false); |
|
_idleThreads.insert_back(thread); |
|
break; |
} | } |
| |
struct timeval dt = { 0, 0 }; |
Boolean cleanupThisThread = |
struct timeval *dtp; |
_timeIntervalExpired(lastActivityTime, &_deallocateWait); |
|
thread->dereference_tsd(); |
th = _pool.next(th); |
|
while (th != 0 ) |
if (cleanupThisThread) |
{ |
{ |
try |
_cleanupThread(thread); |
{ |
_currentThreads--; |
dtp = (struct timeval *)th->try_reference_tsd("deadlock timer"); |
numThreadsCleanedUp++; |
} | } |
catch(...) |
else |
{ |
|
_pool.unlock(); |
|
return bodies; |
|
} |
|
|
|
if(dtp != 0) |
|
{ | { |
memcpy(&dt, dtp, sizeof(struct timeval)); |
_idleThreads.insert_front(thread); |
} | } |
th->dereference_tsd(); |
|
struct timeval deadlock_timeout; |
|
Boolean too_long; |
|
too_long = check_time(&dt, get_deallocate_wait(&deadlock_timeout)); |
|
|
|
if( true == too_long) |
|
{ |
|
// escape if we are down to the minimum thread count |
|
_current_threads--; |
|
if( _current_threads.value() < (Uint32)_min_threads ) |
|
{ |
|
_current_threads++; |
|
th = _pool.next(th); |
|
continue; |
|
} | } |
| |
th = _pool.remove_no_lock((void *)th); |
PEG_METHOD_EXIT(); |
idq.insert_first((void*)th); |
return numThreadsCleanedUp; |
} |
|
th = _pool.next(th); |
|
} |
|
_pool.unlock(); |
|
} | } |
| |
th = (Thread*)idq.remove_last(); |
void ThreadPool::_cleanupThread(Thread* thread) |
while(th != 0) |
|
{ | { |
th->delete_tsd("work func"); |
PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::cleanupThread"); |
th->put_tsd("work func", NULL, |
|
sizeof( PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *)(void *)), |
// Set the "work func" and "work parm" to 0 so _loop() knows to exit. |
(void *)&_undertaker); |
thread->delete_tsd("work func"); |
th->delete_tsd("work parm"); |
thread->put_tsd( |
th->put_tsd("work parm", NULL, sizeof(void *), th); |
"work func", 0, |
|
sizeof(ThreadReturnType (PEGASUS_THREAD_CDECL *)(void *)), |
|
(void *) 0); |
|
thread->delete_tsd("work parm"); |
|
thread->put_tsd("work parm", 0, sizeof(void *), 0); |
| |
// signal the thread's sleep semaphore to awaken it | // signal the thread's sleep semaphore to awaken it |
Semaphore *sleep_sem = (Semaphore *)th->reference_tsd("sleep sem"); |
Semaphore* sleep_sem = (Semaphore *)thread->reference_tsd("sleep sem"); |
PEGASUS_ASSERT(sleep_sem != 0); | PEGASUS_ASSERT(sleep_sem != 0); |
|
|
bodies++; |
|
th->dereference_tsd(); |
|
sleep_sem->signal(); | sleep_sem->signal(); |
th->join(); // Note: Clean up the thread here rather than |
thread->dereference_tsd(); |
delete th; // leave it sitting unused on the _dead queue |
|
th = (Thread*)idq.remove_last(); |
thread->join(); |
} |
delete thread; |
| |
Tracer::trace(TRC_THREAD, Tracer::LEVEL2, |
|
"We need %u new threads", needed.value()); |
|
while (needed.value() > 0) { |
|
_link_pool(_init_thread()); |
|
needed--; |
|
pegasus_sleep(0); |
|
} |
|
return bodies; |
|
} |
|
catch (...) |
|
{ |
|
} |
|
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
return 0; |
|
} | } |
| |
|
Boolean ThreadPool::_timeIntervalExpired( |
Boolean ThreadPool::check_time(struct timeval *start, struct timeval *interval) |
struct timeval* start, |
|
struct timeval* interval) |
{ | { |
// never time out if the interval is zero | // never time out if the interval is zero |
if(interval && interval->tv_sec == 0 && interval->tv_usec == 0) |
if (interval && (interval->tv_sec == 0) && (interval->tv_usec == 0)) |
|
{ |
return false; | return false; |
|
} |
| |
struct timeval now , finish , remaining ; | struct timeval now , finish , remaining ; |
Uint32 usec; | Uint32 usec; |
pegasus_gettimeofday(&now); |
Time::gettimeofday(&now); |
/* remove valgrind error */ |
Time::gettimeofday(&remaining); // Avoid valgrind error |
pegasus_gettimeofday(&remaining); |
|
|
|
| |
finish.tv_sec = start->tv_sec + interval->tv_sec; | finish.tv_sec = start->tv_sec + interval->tv_sec; |
usec = start->tv_usec + interval->tv_usec; | usec = start->tv_usec + interval->tv_usec; |
|
|
usec %= 1000000; | usec %= 1000000; |
finish.tv_usec = usec; | finish.tv_usec = usec; |
| |
if ( timeval_subtract(&remaining, &finish, &now) ) |
return (Time::subtract(&remaining, &finish, &now) != 0); |
return true; |
|
else |
|
return false; |
|
} |
|
|
|
PEGASUS_THREAD_RETURN ThreadPool::_undertaker( void *parm ) |
|
{ |
|
|
|
PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::_undertaker"); |
|
exit_thread((PEGASUS_THREAD_RETURN)1); |
|
PEG_METHOD_EXIT(); |
|
return (PEGASUS_THREAD_RETURN)1; |
|
} | } |
| |
PEGASUS_THREAD_RETURN ThreadPool::_graveyard(Thread *t) |
void ThreadPool::_deleteSemaphore(void *p) |
{ |
|
PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::_graveyard"); |
|
ThreadPool *pool = (ThreadPool *)t->get_parm(); |
|
if(pool == 0 ) { |
|
Tracer::trace(TRC_THREAD, Tracer::LEVEL2, |
|
"Could not obtain the pool information from the Thread.", t); |
|
|
|
return (PEGASUS_THREAD_RETURN)1; |
|
} |
|
if (pool->_pool.exists(t)) |
|
{ |
|
if (pool->_pool.remove( (void *) t) != 0) |
|
{ |
|
Tracer::trace(TRC_THREAD, Tracer::LEVEL4, |
|
"Moving thread %p", t); |
|
/* We are moving the thread to the _running queue b/c |
|
_only_ kill_dead_threads has enough logic to take care |
|
of cleaning up the threads.*/ |
|
|
|
pool->_running.insert_first( t ); |
|
} |
|
else |
|
{ |
|
Tracer::trace(TRC_THREAD, Tracer::LEVEL4, |
|
"Could not move Thread %p from _pool to _runing queue.", t); |
|
return (PEGASUS_THREAD_RETURN)1; |
|
} |
|
} |
|
|
|
else if (pool->_running.exists(t)) |
|
{ |
|
Tracer::trace(TRC_THREAD, Tracer::LEVEL4, |
|
"Thread %p is on _running queue. Letting kill_dead_threads take care of the problem.", t); |
|
return (PEGASUS_THREAD_RETURN)1; |
|
} |
|
if (!pool->_dead.exists(t)) |
|
{ |
|
Tracer::trace(TRC_THREAD, Tracer::LEVEL2, |
|
"Thread is not on any queue! Moving it to the running queue."); |
|
pool->_running.insert_first( t ); |
|
} |
|
PEG_METHOD_EXIT(); |
|
return (PEGASUS_THREAD_RETURN)0; |
|
} |
|
|
|
void ThreadPool::_sleep_sem_del(void *p) |
|
{ |
|
if(p != 0) |
|
{ | { |
delete (Semaphore *)p; | delete (Semaphore *)p; |
} | } |
} |
|
| |
void ThreadPool::_check_deadlock(struct timeval *start) throw(Deadlock) |
Thread* ThreadPool::_initializeThread() |
{ | { |
if (true == check_time(start, &_deadlock_detect)) |
PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::_initializeThread"); |
throw Deadlock(pegasus_thread_self()); |
|
return; |
|
} |
|
|
|
|
|
Boolean ThreadPool::_check_deadlock_no_throw(struct timeval *start) |
|
{ |
|
return(check_time(start, &_deadlock_detect)); |
|
} |
|
| |
Boolean ThreadPool::_check_dealloc(struct timeval *start) |
|
{ |
|
return(check_time(start, &_deallocate_wait)); |
|
} |
|
|
|
Thread *ThreadPool::_init_thread(void) throw(IPCException) |
|
{ |
|
PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::_init_thread"); |
|
Thread *th = (Thread *) new Thread(_loop, this, false); | Thread *th = (Thread *) new Thread(_loop, this, false); |
|
|
// allocate a sleep semaphore and pass it in the thread context | // allocate a sleep semaphore and pass it in the thread context |
// initial count is zero, loop function will sleep until | // initial count is zero, loop function will sleep until |
// we signal the semaphore | // we signal the semaphore |
Semaphore *sleep_sem = (Semaphore *) new Semaphore(0); | Semaphore *sleep_sem = (Semaphore *) new Semaphore(0); |
th->put_tsd("sleep sem", &_sleep_sem_del, sizeof(Semaphore), (void *)sleep_sem); |
th->put_tsd( |
|
"sleep sem", &_deleteSemaphore, sizeof(Semaphore), (void *)sleep_sem); |
struct timeval *dldt = (struct timeval *) ::operator new(sizeof(struct timeval)); |
|
pegasus_gettimeofday(dldt); |
|
| |
th->put_tsd("deadlock timer", thread_data::default_delete, sizeof(struct timeval), (void *)dldt); |
struct timeval* lastActivityTime = |
// thread will enter _loop(void *) and sleep on sleep_sem until we signal it |
(struct timeval *) ::operator new(sizeof(struct timeval)); |
|
Time::gettimeofday(lastActivityTime); |
|
|
|
th->put_tsd("last activity time", thread_data::default_delete, |
|
sizeof(struct timeval), (void *)lastActivityTime); |
|
// thread will enter _loop() and sleep on sleep_sem until we signal it |
| |
if (!th->run()) |
if (th->run() != PEGASUS_THREAD_OK) |
{ | { |
|
Tracer::trace(TRC_THREAD, Tracer::LEVEL2, |
|
"Could not create thread. Error code is %d.", errno); |
delete th; | delete th; |
return 0; | return 0; |
} | } |
_current_threads++; |
_currentThreads++; |
pegasus_yield(); |
Threads::yield(); |
PEG_METHOD_EXIT(); |
|
| |
|
PEG_METHOD_EXIT(); |
return th; | return th; |
} | } |
| |
void ThreadPool::_link_pool(Thread *th) throw(IPCException) |
void ThreadPool::_addToIdleThreadsQueue(Thread* th) |
{ | { |
if(th == 0) | if(th == 0) |
{ | { |
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, | Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
"ThreadPool::_link_pool: Thread pointer is null."); |
"ThreadPool::_addToIdleThreadsQueue: Thread pointer is null."); |
throw NullPointer(); | throw NullPointer(); |
} | } |
|
|
try | try |
{ | { |
_pool.insert_first(th); |
_idleThreads.insert_front(th); |
} | } |
catch(...) | catch(...) |
{ | { |
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, | Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
"ThreadPool::_link_pool: _pool.insert_first failed."); |
"ThreadPool::_addToIdleThreadsQueue: _idleThreads.insert_front " |
|
"failed."); |
} | } |
} | } |
| |
|
// ATTN: not sure where to put this! |
|
#ifdef PEGASUS_ZOS_SECURITY |
|
bool isEnhancedSecurity=99; |
|
#endif |
| |
PEGASUS_NAMESPACE_END | PEGASUS_NAMESPACE_END |
|
|