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// $Id$
// ============================================================================
//
// = LIBRARY
// tests
//
// = FILENAME
// Thread_Mutex_Test.cpp
//
// = DESCRIPTION
// This is a simple test to illustrate the functionality of
// ACE_Thread_Mutex. The test acquires and releases mutexes. No
// command line arguments are needed to run the test.
//
// = AUTHOR
// Prashant Jain <pjain@cs.wustl.edu> and Doug Schmidt <schmidt@cs.wustl.edu>
//
// ============================================================================
#include "test_config.h"
#include "ace/Thread_Manager.h"
ACE_RCSID(tests, Thread_Mutex_Test, "$Id$")
#if defined (ACE_HAS_THREADS)
static void *
test (void *args)
{
ACE_Thread_Mutex *mutex = (ACE_Thread_Mutex *) args;
ACE_UNUSED_ARG (mutex); // Suppress ghs warning about unused local "mutex".
ACE_OS::srand (ACE_OS::time (0));
for (size_t i = 0; i < ACE_MAX_ITERATIONS / 2; i++)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) = trying to acquire on iteration %d\n"),
i));
int result = mutex->acquire ();
ACE_ASSERT (result == 0);
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) = acquired on iteration %d\n"),
i));
// Sleep for a random amount of time between 0 and 2 seconds.
// Note that it's ok to use rand() here because we are running
// within the critical section defined by the Thread_Mutex.
ACE_OS::sleep (ACE_OS::rand () % 2);
result = mutex->release ();
ACE_ASSERT (result == 0);
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) = released on iteration %d\n"),
i));
}
return 0;
}
#endif /* ACE_HAS_THREADS */
static void
spawn (void)
{
#if defined (ACE_HAS_THREADS)
ACE_Thread_Mutex mutex;
if (ACE_Thread_Manager::instance ()->spawn_n (ACE_MAX_THREADS,
ACE_THR_FUNC (test),
(void *) &mutex,
THR_NEW_LWP | THR_DETACHED) == -1)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("%p\n%a"),
ACE_TEXT ("thread create failed")));
// Wait for the threads to exit.
ACE_Thread_Manager::instance ()->wait ();
#else
ACE_ERROR ((LM_INFO,
ACE_TEXT ("threads not supported on this platform\n")));
#endif /* ACE_HAS_THREADS */
}
int
main (int, ACE_TCHAR *[])
{
ACE_START_TEST (ACE_TEXT ("Thread_Mutex_Test"));
spawn ();
ACE_END_TEST;
return 0;
}
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