pegasus/src/Pegasus/Common/Thread.cpp - diff

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Diff for /pegasus/src/Pegasus/Common/Thread.cpp between version 1.1.2.17 and 1.87.4.1

version 1.1.2.17, 2001/11/13 21:55:10

version 1.87.4.1, 2006/01/18 17:37:56

Line 1

//%2005////////////////////////////////////////////////////////////////////////

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

// Compaq Computer Corporation

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

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

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

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

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

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

Line 26

Line 31

// Modified By: Rudy Schuet (rudy.schuet@compaq.com) 11/12/01

// added nsk platform support

// Roger Kumpf, Hewlett-Packard Company (roger_kumpf@hp.com)

// Amit K Arora, IBM (amita@in.ibm.com) for PEP#101

// Sean Keenan, Hewlett-Packard Company (sean.keenan@hp.com)

// David Dillard, VERITAS Software Corp.

// (david.dillard@veritas.com)

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

#include "Thread.h"

#include <exception>

#include <Pegasus/Common/IPC.h>

#include <Pegasus/Common/Tracer.h>

#if defined(PEGASUS_OS_TYPE_WINDOWS)

# include "ThreadWindows.cpp"

Line 38

Line 50

# include "ThreadUnix.cpp"

#elif defined(PEGASUS_OS_TYPE_NSK)

# include "ThreadNsk.cpp"

#elif defined(PEGASUS_OS_VMS)

# include "ThreadVms.cpp"

#else

# error "Unsupported platform"

#endif

PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN

void thread_data::default_delete(void * data)

{

if( data != NULL)

::operator delete(data);

}

Boolean Thread::_signals_blocked = false;

// l10n start

void language_delete(void * data)

// for non-native implementations

#ifndef PEGASUS_THREAD_CLEANUP_NATIVE

void Thread::cleanup_push( void (*routine)(void *), void *parm) throw(IPCException)

{

cleanup_handler *cu = new cleanup_handler(routine, parm);

if( data != NULL)

try

{

_cleanup.insert_first(cu);

AutoPtr<AcceptLanguageList> al(static_cast<AcceptLanguageList *>(data));

}

catch(IPCException& e)

{

delete cu;

throw;

}

// l10n end

Boolean Thread::_signals_blocked = false;

// l10n

#ifndef PEGASUS_OS_ZOS

PEGASUS_THREAD_KEY_TYPE Thread::_platform_thread_key = PEGASUS_THREAD_KEY_TYPE(-1);

#else

PEGASUS_THREAD_KEY_TYPE Thread::_platform_thread_key;

#endif

Boolean Thread::_key_initialized = false;

Boolean Thread::_key_error = false;

void Thread::cleanup_push( void (*routine)(void *), void *parm)

{

AutoPtr<cleanup_handler> cu(new cleanup_handler(routine, parm));

_cleanup.insert_first(cu.get());

cu.release();

return;

}

void Thread::cleanup_pop(Boolean execute) throw(IPCException)

void Thread::cleanup_pop(Boolean execute)

{

cleanup_handler *cu ;

AutoPtr<cleanup_handler> cu;

try

{

cu = _cleanup.remove_first() ;

cu.reset(_cleanup.remove_first());

}

catch(IPCException& e)

catch(IPCException&)

{

PEGASUS_ASSERT(0);

}

if(execute == true)

cu->execute();

delete cu;

}

#endif

//thread_data *Thread::put_tsd(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)

#ifndef PEGASUS_THREAD_EXIT_NATIVE

Line 101

Line 124

{

cleanup_pop(true);

}

catch(IPCException& e)

catch(IPCException&)

{

PEGASUS_ASSERT(0);

break;

Line 109

Line 132

}

_exit_code = exit_code;

exit_thread(exit_code);

_handle.thid = 0;

}

#endif

// l10n start

Sint8 Thread::initializeKey()

{

PEG_METHOD_ENTER(TRC_THREAD, "Thread::initializeKey");

if (!Thread::_key_initialized)

{

if (Thread::_key_error)

{

Tracer::trace(TRC_THREAD, Tracer::LEVEL4,

"Thread: ERROR - thread key error");

return -1;

}

ThreadPool::ThreadPool(Sint16 initial_size,

if (pegasus_key_create(&Thread::_platform_thread_key) == 0)

Sint8 *key,

{

Sint16 min,

Tracer::trace(TRC_THREAD, Tracer::LEVEL4,

Sint16 max,

"Thread: able to create a thread key");

struct timeval & alloc_wait,

Thread::_key_initialized = true;

struct timeval & dealloc_wait,

}

struct timeval & deadlock_detect)

else

: _max_threads(max), _min_threads(min),

{

_current_threads(0), _waiters(initial_size),

Tracer::trace(TRC_THREAD, Tracer::LEVEL4,

_pool_sem(0), _pool(true), _running(true),

"Thread: ERROR - unable to create a thread key");

_dead(true), _dying(0)

Thread::_key_error = true;

{

return -1;

_allocate_wait.tv_sec = alloc_wait.tv_sec;

}

_allocate_wait.tv_usec = alloc_wait.tv_usec;

}

_deallocate_wait.tv_sec = dealloc_wait.tv_sec;

_deallocate_wait.tv_usec = dealloc_wait.tv_usec;

PEG_METHOD_EXIT();

_deadlock_detect.tv_sec = deadlock_detect.tv_sec;

return 0;

_deadlock_detect.tv_usec = deadlock_detect.tv_usec;

}

memset(_key, 0x00, 17);

if(key != 0)

strncpy(_key, key, 16);

if(_max_threads < initial_size)

_max_threads = initial_size;

if(_min_threads > initial_size)

_min_threads = initial_size;

int i;

Thread * Thread::getCurrent()

for(i = 0; i < initial_size; i++)

{

_link_pool(_init_thread());

PEG_METHOD_ENTER(TRC_THREAD, "Thread::getCurrent");

if (Thread::initializeKey() != 0)

{

return NULL;

}

PEG_METHOD_EXIT();

return (Thread *)pegasus_get_thread_specific(_platform_thread_key);

}

void Thread::setCurrent(Thread * thrd)

{

PEG_METHOD_ENTER(TRC_THREAD, "Thread::setCurrent");

if (Thread::initializeKey() == 0)

{

if (pegasus_set_thread_specific(

Thread::_platform_thread_key, (void *) thrd) == 0)

{

Tracer::trace(TRC_THREAD, Tracer::LEVEL4,

"Successful set Thread * into thread specific storage");

}

else

{

Tracer::trace(TRC_THREAD, Tracer::LEVEL4,

"ERROR: error setting Thread * into thread specific storage");

}

PEG_METHOD_EXIT();

}

AcceptLanguageList * Thread::getLanguages()

{

PEG_METHOD_ENTER(TRC_THREAD, "Thread::getLanguages");

Thread * curThrd = Thread::getCurrent();

if (curThrd == NULL)

return NULL;

AcceptLanguageList * acceptLangs =

(AcceptLanguageList *)curThrd->reference_tsd("acceptLanguages");

curThrd->dereference_tsd();

PEG_METHOD_EXIT();

return acceptLangs;

}

ThreadPool::~ThreadPool(void)

void Thread::setLanguages(AcceptLanguageList *langs) //l10n

{

_dying++;

PEG_METHOD_ENTER(TRC_THREAD, "Thread::setLanguages");

Thread *th = _pool.remove_first();

while(th != 0)

Thread* currentThrd = Thread::getCurrent();

if (currentThrd != NULL)

{

Semaphore *sleep_sem = (Semaphore *)th->reference_tsd("sleep sem");

// deletes the old tsd and creates a new one

currentThrd->put_tsd("acceptLanguages",

language_delete,

sizeof(AcceptLanguageList *),

langs);

}

if(sleep_sem == 0)

PEG_METHOD_EXIT();

}

void Thread::clearLanguages() //l10n

{

th->dereference_tsd();

PEG_METHOD_ENTER(TRC_THREAD, "Thread::clearLanguages");

throw NullPointer();

Thread * currentThrd = Thread::getCurrent();

if (currentThrd != NULL)

{

// deletes the old tsd

currentThrd->delete_tsd("acceptLanguages");

}

sleep_sem->signal();

PEG_METHOD_EXIT();

sleep_sem->signal();

th->dereference_tsd();

// signal the thread's sleep semaphore

th->cancel();

th->join();

th->empty_tsd();

delete th;

th = _pool.remove_first();

}

// l10n end

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

// ThreadPool

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

th = _running.remove_first();

ThreadPool::ThreadPool(

while(th != 0)

Sint16 initialSize,

const char* key,

Sint16 minThreads,

Sint16 maxThreads,

struct timeval& deallocateWait)

: _maxThreads(maxThreads),

_minThreads(minThreads),

_currentThreads(0),

_idleThreads(true),

_runningThreads(true),

_dying(0)

{

// signal the thread's sleep semaphore

_deallocateWait.tv_sec = deallocateWait.tv_sec;

th->cancel();

_deallocateWait.tv_usec = deallocateWait.tv_usec;

th->join();

th->empty_tsd();

memset(_key, 0x00, 17);

delete th;

if (key != 0)

th = _running.remove_first();

{

strncpy(_key, key, 16);

}

th = _dead.remove_first();

if ((_maxThreads > 0) && (_maxThreads < initialSize))

while(th != 0)

{

_maxThreads = initialSize;

}

if (_minThreads > initialSize)

{

_minThreads = initialSize;

}

for (int i = 0; i < initialSize; i++)

{

_addToIdleThreadsQueue(_initializeThread());

}

ThreadPool::~ThreadPool()

{

PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::~ThreadPool");

try

{

// Set the dying flag so all thread know the destructor has been entered

_dying++;

Tracer::trace(TRC_THREAD, Tracer::LEVEL2,

"Cleaning up %d idle threads. ", _currentThreads.get());

while (_currentThreads.get() > 0)

{

Thread* thread = _idleThreads.remove_first();

if (thread != 0)

{

_cleanupThread(thread);

_currentThreads--;

}

else

{

pegasus_yield();

}

catch (...)

{

// signal the thread's sleep semaphore

th->cancel();

th->join();

th->empty_tsd();

delete th;

th = _dead.remove_first();

}

// make this static to the class

PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL ThreadPool::_loop(void *parm)

{

PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::_loop");

try

{

Thread *myself = (Thread *)parm;

if(myself == 0)

PEGASUS_ASSERT(myself != 0);

throw NullPointer();

// Set myself into thread specific storage

// This will allow code to get its own Thread

Thread::setCurrent(myself);

ThreadPool *pool = (ThreadPool *)myself->get_parm();

if(pool == 0 )

PEGASUS_ASSERT(pool != 0);

throw NullPointer();

Semaphore *sleep_sem;

Semaphore* sleep_sem = 0;

struct timeval *deadlock_timer;

struct timeval* lastActivityTime = 0;

try

{

sleep_sem = (Semaphore *)myself->reference_tsd("sleep sem");

myself->dereference_tsd();

deadlock_timer = (struct timeval *)myself->reference_tsd("deadlock timer");

PEGASUS_ASSERT(sleep_sem != 0);

lastActivityTime =

(struct timeval *)myself->reference_tsd("last activity time");

myself->dereference_tsd();

PEGASUS_ASSERT(lastActivityTime != 0);

}

catch(IPCException & e)

catch (...)

{

myself->exit_self(0);

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"ThreadPool::_loop: Failure getting sleep_sem or "

"lastActivityTime.");

PEGASUS_ASSERT(false);

pool->_idleThreads.remove(myself);

pool->_currentThreads--;

PEG_METHOD_EXIT();

return((PEGASUS_THREAD_RETURN)1);

}

if(sleep_sem == 0 || deadlock_timer == 0)

throw NullPointer();

while(pool->_dying < 1)

while (1)

{

try

{

sleep_sem->wait();

// when we awaken we reside on the running queue, not the pool queue

}

if(pool->_dying > 0)

catch (...)

break;

{

gettimeofday(deadlock_timer, NULL);

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"ThreadPool::_loop: failure on sleep_sem->wait().");

PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *_work)(void *);

PEGASUS_ASSERT(false);

void *parm;

pool->_idleThreads.remove(myself);

pool->_currentThreads--;

PEG_METHOD_EXIT();

return((PEGASUS_THREAD_RETURN)1);

}

// When we awaken we reside on the _runningThreads queue, not the

// _idleThreads queue.

PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL* work)(void *) = 0;

void* parm = 0;

Semaphore* blocking_sem = 0;

try

{

_work = (PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *)(void *)) \

work = (PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *)(void *))

myself->reference_tsd("work func");

myself->dereference_tsd();

parm = myself->reference_tsd("work parm");

myself->dereference_tsd();

blocking_sem = (Semaphore *)myself->reference_tsd("blocking sem");

myself->dereference_tsd();

}

catch(IPCException & e)

catch (...)

{

myself->exit_self(0);

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"ThreadPool::_loop: Failure accessing work func, work parm, "

"or blocking sem.");

PEGASUS_ASSERT(false);

pool->_idleThreads.remove(myself);

pool->_currentThreads--;

PEG_METHOD_EXIT();

return((PEGASUS_THREAD_RETURN)1);

}

if(_work == 0)

if (work == 0)

throw NullPointer();

{

_work(parm);

Tracer::trace(TRC_THREAD, Tracer::LEVEL4,

"ThreadPool::_loop: work func is 0, meaning we should exit.");

break;

}

gettimeofday(lastActivityTime, NULL);

try

{

PEG_TRACE_STRING(TRC_THREAD, Tracer::LEVEL4, "Work starting.");

work(parm);

PEG_TRACE_STRING(TRC_THREAD, Tracer::LEVEL4, "Work finished.");

}

catch (Exception & e)

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

String("Exception from work in ThreadPool::_loop: ") +

e.getMessage());

}

#if !defined(PEGASUS_OS_LSB)

catch (const exception& e)

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

String("Exception from work in ThreadPool::_loop: ") +

e.what());

}

#endif

catch (...)

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"Unknown exception from work in ThreadPool::_loop.");

}

// put myself back onto the available list

try

{

pool->_running.remove((void *)myself);

gettimeofday(lastActivityTime, NULL);

pool->_link_pool(myself);

if (blocking_sem != 0)

{

blocking_sem->signal();

}

Boolean removed = pool->_runningThreads.remove((void *)myself);

PEGASUS_ASSERT(removed);

pool->_idleThreads.insert_first(myself);

}

catch (...)

{

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"ThreadPool::_loop: Adding thread to idle pool failed.");

PEGASUS_ASSERT(false);

pool->_currentThreads--;

PEG_METHOD_EXIT();

return((PEGASUS_THREAD_RETURN)1);

}

catch(IPCException & e)

}

catch (const Exception& e)

{

myself->exit_self(0);

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"Caught exception: \"" + e.getMessage() + "\". Exiting _loop.");

}

catch (...)

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"Caught unrecognized exception. Exiting _loop.");

}

// wait to be awakend by the thread pool destructor

sleep_sem->wait();

PEG_METHOD_EXIT();

myself->test_cancel();

myself->exit_self(0);

return((PEGASUS_THREAD_RETURN)0);

}

ThreadStatus ThreadPool::allocate_and_awaken(

void* parm,

PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL* work)(void *),

Semaphore* blocking)

{

PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::allocate_and_awaken");

// Allocate_and_awaken will not run if the _dying flag is set.

// Once the lock is acquired, ~ThreadPool will not change

// the value of _dying until the lock is released.

void ThreadPool::allocate_and_awaken(void *parm,

try

PEGASUS_THREAD_RETURN \

{

(PEGASUS_THREAD_CDECL *work)(void *))

if (_dying.get())

throw(IPCException)

{

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"ThreadPool::allocate_and_awaken: ThreadPool is dying(1).");

return PEGASUS_THREAD_UNAVAILABLE;

}

struct timeval start;

gettimeofday(&start, NULL);

Thread* th = 0;

Thread *th = _pool.remove_first();

th = _idleThreads.remove_first();

while (th == 0 && _dying < 1)

if (th == 0)

{

try // we couldn't get a free thread from the pool

{

// wait for the right interval and try again

if ((_maxThreads == 0) ||

while(th == 0 && _dying < 1)

(_currentThreads.get() < Uint32(_maxThreads)))

{

_check_deadlock(&start);

th = _initializeThread();

Uint32 interval = _allocate_wait.tv_sec * 1000;

if(_allocate_wait.tv_usec > 0)

interval += (_deallocate_wait.tv_usec / 1000);

// will throw a timeout if no thread comes free

_pool_sem.time_wait(interval);

th = _pool.remove_first();

}

catch(TimeOut & to)

{

if (th == 0)

if(_current_threads < _max_threads)

{

th = _init_thread();

// ATTN-DME-P3-20031103: This trace message should not be

break;

// be labeled TRC_DISCARDED_DATA, because it does not

}

// necessarily imply that a failure has occurred. However,

// this label is being used temporarily to help isolate

// the cause of client timeout problems.

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"ThreadPool::allocate_and_awaken: Insufficient resources: "

" pool = %s, running threads = %d, idle threads = %d",

_key, _runningThreads.count(), _idleThreads.count());

return PEGASUS_THREAD_INSUFFICIENT_RESOURCES;

}

// will throw a Deadlock Exception before falling out of the loop

_check_deadlock(&start);

} // while th == null

if(_dying < 1)

{

// initialize the thread data with the work function and parameters

th->remove_tsd("work func");

Tracer::trace(TRC_THREAD, Tracer::LEVEL4,

"Initializing thread with work function and parameters: parm = %p",

parm);

th->delete_tsd("work func");

th->put_tsd("work func", NULL,

sizeof( PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *)(void *)),

(void *)work);

th->remove_tsd("work parm");

th->delete_tsd("work parm");

th->put_tsd("work parm", NULL, sizeof(void *), parm);

th->delete_tsd("blocking sem");

if (blocking != 0)

th->put_tsd("blocking sem", NULL, sizeof(Semaphore *), blocking);

// put the thread on the running list

_running.insert_first(th);

_runningThreads.insert_first(th);

// signal the thread's sleep semaphore to awaken it

Semaphore *sleep_sem = (Semaphore *)th->reference_tsd("sleep sem");

PEGASUS_ASSERT(sleep_sem != 0);

if(sleep_sem == 0)

Tracer::trace(TRC_THREAD, Tracer::LEVEL4, "Signal thread to awaken");

{

th->dereference_tsd();

throw NullPointer();

}

sleep_sem->signal();

th->dereference_tsd();

}

else

catch (...)

_pool.insert_first(th);

{

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"ThreadPool::allocate_and_awaken: Operation Failed.");

PEG_METHOD_EXIT();

// ATTN: Error result has not yet been defined

return PEGASUS_THREAD_SETUP_FAILURE;

}

PEG_METHOD_EXIT();

return PEGASUS_THREAD_OK;

}

// 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

void ThreadPool::kill_dead_threads(void)

Uint32 ThreadPool::cleanupIdleThreads()

throw(IPCException)

{

struct timeval now;

PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::cleanupIdleThreads");

gettimeofday(&now, NULL);

Uint32 numThreadsCleanedUp = 0;

// first go thread the dead q and clean it up as much as possible

Uint32 numIdleThreads = _idleThreads.count();

while(_dead.count() > 0)

for (Uint32 i = 0; i < numIdleThreads; i++)

{

Thread *dead = _dead.remove_first();

if(dead == 0)

throw NullPointer();

if(dead->_handle.thid != 0)

{

dead->detach();

// Do not dip below the minimum thread count

destroy_thread(dead->_handle.thid, 0);

if (_currentThreads.get() <= (Uint32)_minThreads)

dead->_handle.thid = 0;

while(dead->_cleanup.count() )

{

dead->cleanup_pop(true);

break;

}

delete dead;

}

DQueue<Thread> * map[2] =

Thread* thread = _idleThreads.remove_last();

{

&_pool, &_running

};

DQueue<Thread> *q = 0;

int i = 0;

AtomicInt needed(0);

for( q = map[i] ; i < 2; i++, q = map[i])

// If there are no more threads in the _idleThreads queue, we're done.

{

if (thread == 0)

if(q->count() > 0 )

{

try

{

q->try_lock();

break;

}

catch(AlreadyLocked & a)

{

q++;

continue;

}

struct timeval dt = { 0, 0 };

struct timeval* lastActivityTime;

struct timeval *dtp;

Thread *th = 0;

th = q->next(th);

while (th != 0 )

{

try

{

dtp = (struct timeval *)th->try_reference_tsd("deadlock timer");

lastActivityTime = (struct timeval *)thread->try_reference_tsd(

"last activity time");

PEGASUS_ASSERT(lastActivityTime != 0);

}

catch(AlreadyLocked & a)

catch (...)

{

th = q->next(th);

PEGASUS_ASSERT(false);

continue;

_idleThreads.insert_last(thread);

break;

}

if(dtp != 0)

Boolean cleanupThisThread =

{

_timeIntervalExpired(lastActivityTime, &_deallocateWait);

memcpy(&dt, dtp, sizeof(struct timeval));

thread->dereference_tsd();

}

if (cleanupThisThread)

th->dereference_tsd();

{

struct timeval deadlock_timeout;

_cleanupThread(thread);

if( true == check_time(&dt, get_deadlock_detect(&deadlock_timeout) ))

_currentThreads--;

{

numThreadsCleanedUp++;

// if we are deallocating from the pool, escape if we are

// down to the minimum thread count

if( _current_threads.value() <= (Uint32)_min_threads )

{

if( i == 1)

{

th = q->next(th);

continue;

}

else

{

// we are killing a hung thread and we will drop below the

_idleThreads.insert_first(thread);

// minimum. create another thread to make up for the one

// we are about to kill

needed++;

}

th = q->remove_no_lock((void *)th);

PEG_METHOD_EXIT();

return numThreadsCleanedUp;

}

if(th != 0)

void ThreadPool::_cleanupThread(Thread* thread)

{

th->remove_tsd("work func");

PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::cleanupThread");

th->put_tsd("work func", NULL,

// Set the "work func" and "work parm" to 0 so _loop() knows to exit.

thread->delete_tsd("work func");

thread->put_tsd(

"work func", 0,

sizeof( PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *)(void *)),

(void *)&_undertaker);

(void *) 0);

th->remove_tsd("work parm");

thread->delete_tsd("work parm");

th->put_tsd("work parm", NULL, sizeof(void *), th);

thread->put_tsd("work parm", 0, sizeof(void *), 0);

// 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);

if(sleep_sem == 0)

{

th->dereference_tsd();

throw NullPointer();

}

// put the thread on the dead list

_dead.insert_first(th);

sleep_sem->signal();

th->dereference_tsd();

thread->dereference_tsd();

th = 0;

}

thread->join();

}

delete thread;

th = q->next(th);

PEG_METHOD_EXIT();

}

q->unlock();

while (needed.value() > 0)

Boolean ThreadPool::_timeIntervalExpired(

struct timeval* start,

struct timeval* interval)

{

_link_pool(_init_thread());

// never time out if the interval is zero

needed--;

if (interval && (interval->tv_sec == 0) && (interval->tv_usec == 0))

{

return false;

}

struct timeval now, finish, remaining;

Uint32 usec;

pegasus_gettimeofday(&now);

pegasus_gettimeofday(&remaining); // Avoid valgrind error

finish.tv_sec = start->tv_sec + interval->tv_sec;

usec = start->tv_usec + interval->tv_usec;

finish.tv_sec += (usec / 1000000);

usec %= 1000000;

finish.tv_usec = usec;

return (timeval_subtract(&remaining, &finish, &now) != 0);

}

void ThreadPool::_deleteSemaphore(void *p)

{

delete (Semaphore *)p;

}

Thread* ThreadPool::_initializeThread()

{

PEG_METHOD_ENTER(TRC_THREAD, "ThreadPool::_initializeThread");

return;

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", &_deleteSemaphore, sizeof(Semaphore), (void *)sleep_sem);

Boolean ThreadPool::check_time(struct timeval *start, struct timeval *interval)

struct timeval* lastActivityTime =

(struct timeval *) ::operator new(sizeof(struct timeval));

pegasus_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() != PEGASUS_THREAD_OK)

{

struct timeval now;

Tracer::trace(TRC_THREAD, Tracer::LEVEL2,

gettimeofday(&now, NULL);

"Could not create thread. Error code is %d.", errno);

if( (now.tv_sec - start->tv_sec) > interval->tv_sec ||

delete th;

(((now.tv_sec - start->tv_sec) == interval->tv_sec) &&

return 0;

((now.tv_usec - start->tv_usec) >= interval->tv_usec ) ) )

return true;

else

return false;

}

_currentThreads++;

pegasus_yield();

PEG_METHOD_EXIT();

return th;

}

PEGASUS_THREAD_RETURN ThreadPool::_undertaker( void *parm )

void ThreadPool::_addToIdleThreadsQueue(Thread* th)

{

Thread *myself = reinterpret_cast<Thread *>(parm);

if (th == 0)

if(myself != 0)

{

myself->detach();

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

myself->_handle.thid = 0;

"ThreadPool::_addToIdleThreadsQueue: Thread pointer is null.");

myself->cancel();

throw NullPointer();

myself->test_cancel();

myself->exit_self(0);

}

return((PEGASUS_THREAD_RETURN)0);

}

try

{

_idleThreads.insert_first(th);

}

catch (...)

{

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"ThreadPool::_addToIdleThreadsQueue: _idleThreads.insert_first "

"failed.");

}

PEGASUS_NAMESPACE_END

Legend:

Removed from v.1.1.2.17
changed lines
	Added in v.1.87.4.1

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