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// $Id: THYBRID_Concurrency.cpp 91813 2010-09-17 07:52:52Z johnnyw $
#include "ace/OS_NS_stdlib.h"
#include "ace/Message_Block.h"
#ifndef JAWS_BUILD_DLL
#define JAWS_BUILD_DLL
#endif
#include "jaws3/Concurrency.h"
#include "jaws3/THYBRID_Concurrency.h"
#include "jaws3/Protocol_Handler.h"
#include "jaws3/Options.h"
JAWS_THYBRID_Concurrency::JAWS_THYBRID_Concurrency (void)
: getting_ (0)
, min_number_of_threads_ (1)
, max_number_of_threads_ (-1)
, shutdown_task_ (0)
, error_ (0)
{
const char *value;
value = JAWS_Options::instance ()->getenv ("JAWS_MIN_THYBRID_THREADS");
if (value != 0)
this->min_number_of_threads_ = ACE_OS::atoi (value);
else
this->min_number_of_threads_ =
ACE_OS::atoi (JAWS_DEFAULT_MIN_THYBRID_THREADS);
if (this->min_number_of_threads_ <= 0)
this->min_number_of_threads_ = 1;
value = JAWS_Options::instance ()->getenv ("JAWS_MAX_THYBRID_THREADS");
if (value != 0)
this->max_number_of_threads_ = ACE_OS::atoi (value);
else
this->max_number_of_threads_ =
ACE_OS::atoi (JAWS_DEFAULT_MAX_THYBRID_THREADS);
if (this->max_number_of_threads_ <= 0)
this->max_number_of_threads_ = -1;
else if (this->max_number_of_threads_ < this->min_number_of_threads_)
this->max_number_of_threads_ = this->min_number_of_threads_;
int r;
r = this->activate (THR_BOUND | THR_JOINABLE, this->min_number_of_threads_);
if (r < 0)
{
this->shutdown_task_ = 1;
this->error_ = 1;
}
}
int
JAWS_THYBRID_Concurrency::putq (JAWS_Protocol_Handler *ph)
{
if (this->error_)
return -1;
JAWS_CONCURRENCY_TASK *task = this;
int result = task->putq (& ph->mb_);
if (result != -1)
{
if (this->getting_ < this->min_number_of_threads_
&& (this->max_number_of_threads_ < 0
|| this->thr_count () < (size_t) this->max_number_of_threads_))
{
int r;
r = this->activate ( THR_BOUND | THR_JOINABLE
, 1 // number of threads
, 1 // force active
);
if (r < 0)
{
// ACE_ERROR
return -1;
}
}
}
return result;
}
int
JAWS_THYBRID_Concurrency::getq (JAWS_Protocol_Handler *&ph)
{
ph = 0;
JAWS_CONCURRENCY_TASK *task = this;
if (this->shutdown_task_ && task->msg_queue ()->message_count () == 0)
return -1;
int getting = ++(this->getting_);
if (getting > this->min_number_of_threads_)
{
if (task->msg_queue ()->message_count () == 0)
{
--(this->getting_);
return -1;
}
}
ACE_Message_Block *mb = 0;
int result = task->getq (mb);
if (result != -1)
{
ph = (JAWS_Protocol_Handler *) mb->base ();
if (ph == 0)
{
// Shutdown this task;
this->shutdown_task_ = 1;
if (this->getting_ > 1)
{
task->putq (mb);
result = -1;
}
}
}
--(this->getting_);
return result;
}
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