141 lines
4.4 KiB
C++
141 lines
4.4 KiB
C++
/*
|
|
ThreadWrapperJoin(Test) - wait blocking on termination of a thread
|
|
|
|
Copyright (C) Lumiera.org
|
|
2008, Hermann Vosseler <Ichthyostega@web.de>
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
* *****************************************************/
|
|
|
|
|
|
#include "lib/test/run.hpp"
|
|
|
|
#include "include/symbol.hpp"
|
|
#include "backend/thread-wrapper.hpp"
|
|
#include "lib/error.hpp"
|
|
#include "lib/sync.hpp"
|
|
|
|
#include <tr1/functional>
|
|
|
|
using std::tr1::bind;
|
|
using test::Test;
|
|
|
|
|
|
|
|
namespace backend {
|
|
namespace test {
|
|
|
|
/**************************************************************************
|
|
* @test use the Lumiera backend to create some new threads, additionally
|
|
* passing an condition variable for waiting on thread termination.
|
|
* Actually this is implemented as creating and passing a JoinHandle.
|
|
*
|
|
* @see backend::Thread
|
|
* @see threads.h
|
|
*/
|
|
class ThreadWrapperJoin_test : public Test
|
|
{
|
|
|
|
virtual void
|
|
run (Arg)
|
|
{
|
|
simpleUse ();
|
|
wrongUse ();
|
|
}
|
|
|
|
|
|
volatile int aValue_; ///< state to be modified by the other thread
|
|
|
|
void
|
|
theAction (int secretValue) ///< to be run in a new thread...
|
|
{
|
|
usleep (100000); // pause 100ms prior to modifying
|
|
aValue_ = secretValue+42;
|
|
}
|
|
|
|
|
|
void
|
|
simpleUse ()
|
|
{
|
|
aValue_=0;
|
|
int mySecret = (rand() % 1000) - 500;
|
|
|
|
JoinHandle waitingHandle;
|
|
|
|
Thread("test Thread joining",
|
|
bind (&ThreadWrapperJoin_test::theAction, this, mySecret),
|
|
waitingHandle);
|
|
// note binding and thread wrapper already destroyed
|
|
|
|
waitingHandle.join(); // blocks until theAction() is done
|
|
|
|
ASSERT (aValue_ == mySecret+42);
|
|
}
|
|
|
|
|
|
void
|
|
wrongUse ()
|
|
{
|
|
JoinHandle waitingHandle;
|
|
|
|
Thread("test Thread joining-1",
|
|
bind (&ThreadWrapperJoin_test::theAction, this, 111));
|
|
// note we "forget" to pass the JoinHandle
|
|
try
|
|
{
|
|
waitingHandle.join(); // protocol error: handle wasn't passed for starting a Thread;
|
|
NOTREACHED;
|
|
}
|
|
catch (lumiera::error::Logic& logo)
|
|
{ lumiera_error(); }
|
|
|
|
|
|
Thread("test Thread joining-2",
|
|
bind (&ThreadWrapperJoin_test::theAction, this, 222),
|
|
waitingHandle); // this time we pass it....
|
|
|
|
#ifdef DEBUG
|
|
/////////////////////////////////////////////////////////////////////////////////////////////TODO: better way of detecting debug builds
|
|
try
|
|
{
|
|
Thread("test Thread joining-3",
|
|
bind (&ThreadWrapperJoin_test::theAction, this, 333),
|
|
waitingHandle); // but then pass it again for another thread....
|
|
NOTREACHED;
|
|
}
|
|
catch (...)
|
|
{
|
|
ASSERT (lumiera_error() == lumiera::error::LUMIERA_ERROR_ASSERTION);
|
|
}
|
|
#endif
|
|
|
|
// note: the waitingHandle goes out of scope here,
|
|
// which unblocks the second thread. The first thread wasn't blocked,
|
|
// while the third thread wasn't created at all.
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
/** Register this test class... */
|
|
LAUNCHER (ThreadWrapperJoin_test, "function common");
|
|
|
|
|
|
|
|
} // namespace test
|
|
|
|
} // namespace backend
|