xref: /aoo42x/main/salhelper/source/condition.cxx (revision cdf0e10c)

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 * Copyright 2000, 2010 Oracle and/or its affiliates.
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
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#include <salhelper/condition.hxx>
#include <osl/time.h>


using namespace salhelper;


/******************************************************************
 *                                                                *
 *                     Condition                                  *
 *                                                                *
 ******************************************************************/

Condition::Condition(osl::Mutex& aMutex)
	: m_aMutex(aMutex),
	  m_aCondition(osl_createCondition())
{
}


Condition::~Condition()
{
	osl_destroyCondition(m_aCondition);
}


/******************************************************************
 *                                                                *
 *              ConditionModifier                                 *
 *                                                                *
 ******************************************************************/

ConditionModifier::ConditionModifier(Condition& aCond)
	: m_aCond(aCond)
{
    m_aCond.m_aMutex.acquire();
}


ConditionModifier::~ConditionModifier()
{
	if(m_aCond.applies())
		osl_setCondition(m_aCond.m_aCondition);

	m_aCond.m_aMutex.release();
}



/******************************************************************
 *                                                                *
 *              ConditionWaiter                                   *
 *                                                                *
 ******************************************************************/

ConditionWaiter::timedout::timedout() {}

ConditionWaiter::timedout::timedout(timedout const &) {}

ConditionWaiter::timedout::~timedout() {}

ConditionWaiter::timedout &
ConditionWaiter::timedout::operator =(timedout const &) { return *this; }

ConditionWaiter::ConditionWaiter(Condition& aCond)
	: m_aCond(aCond)
{
	while(true) {
		osl_waitCondition(m_aCond.m_aCondition,0);
		m_aCond.m_aMutex.acquire();

		if(m_aCond.applies())
			break;
		else {
			osl_resetCondition(m_aCond.m_aCondition);
			m_aCond.m_aMutex.release();
		}
	}
}


ConditionWaiter::ConditionWaiter(Condition& aCond,sal_uInt32 milliSec)
	throw(
		ConditionWaiter::timedout
	)
	: m_aCond(aCond)
{
	TimeValue aTime;
	aTime.Seconds = milliSec / 1000;
	aTime.Nanosec = 1000000 * ( milliSec % 1000 );

	while(true) {
		if( osl_waitCondition(m_aCond.m_aCondition,&aTime) ==
			osl_cond_result_timeout )
			throw timedout();

		m_aCond.m_aMutex.acquire();

		if(m_aCond.applies())
			break;
		else {
			osl_resetCondition(m_aCond.m_aCondition);
			m_aCond.m_aMutex.release();
		}
	}
}


ConditionWaiter::~ConditionWaiter()
{
	if(! m_aCond.applies())
		osl_resetCondition(m_aCond.m_aCondition);
	m_aCond.m_aMutex.release();
}