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// $Id$
// ============================================================================
//
// = LIBRARY
// tests
//
// = FILENAME
// Mutex_Test.cpp
//
// = DESCRIPTION
// This is a simple test to illustrate the functionality of
// ACE_Process_Mutex. The test acquires and releases mutexes. No
// command line arguments are needed to run the test.
//
// = AUTHOR
// Prashant Jain and Doug Schmidt
//
// ============================================================================
#include "test_config.h"
#include "ace/Service_Config.h"
#include "ace/Thread_Manager.h"
static void *
test (void *args)
{
ACE_Process_Mutex *pm = (ACE_Process_Mutex *) args;
#if (defined (ACE_WIN32) || defined (VXWORKS)) && defined (ACE_HAS_THREADS)
ACE_NEW_THREAD;
#endif /* (defined (ACE_WIN32) || defined (VXWORKS)) && defined (ACE_HAS_THREADS) */
ACE_OS::srand (ACE_OS::time (0));
for (int i = 0; i < ACE_MAX_ITERATIONS; i++)
{
ACE_DEBUG ((LM_DEBUG, "(%P|%t) = trying to acquire on iteration %d\n", i));
ACE_ASSERT (pm->acquire () == 0);
ACE_DEBUG ((LM_DEBUG, "(%P|%t) = acquired on iteration %d\n", i));
// Sleep for a random amount of time between 0 and 5 seconds.
// Note that it's ok to use rand() here because we are running
// within the critical section defined by the Process_Mutex.
ACE_OS::sleep (ACE_OS::rand () % 5);
ACE_ASSERT (pm->release () == 0);
ACE_DEBUG ((LM_DEBUG, "(%P|%t) = released on iteration %d\n", i));
}
return 0;
}
static void
spawn (void)
{
char *name = "hello";
#if !defined (ACE_WIN32) && !defined (VXWORKS)
switch (ACE_OS::fork ("child"))
{
case -1:
ACE_ERROR ((LM_ERROR, "%p\n%a", "fork failed"));
ACE_OS::_exit (-1);
case 0: // In child
{
ACE_Process_Mutex pm (ACE_WIDE_STRING (name));
test (&pm);
break;
}
default: // In parent
{
ACE_Process_Mutex pm (name);
test (&pm);
// Allow the client to exit, then remove the Process_Mutex.
ACE_OS::wait ();
pm.remove ();
break;
}
}
#elif defined (ACE_HAS_THREADS)
ACE_Process_Mutex pm (ACE_WIDE_STRING (name));
if (ACE_Thread_Manager::instance ()->spawn (ACE_THR_FUNC (test),
(void *) &pm,
THR_NEW_LWP | THR_DETACHED) == -1)
ACE_ERROR ((LM_ERROR, "%p\n%a", "thread create failed"));
if (ACE_Thread_Manager::instance ()->spawn (ACE_THR_FUNC (test),
(void *) &pm,
THR_NEW_LWP | THR_DETACHED) == -1)
ACE_ERROR ((LM_ERROR, "%p\n%a", "thread create failed"));
// Wait for the threads to exit.
ACE_Thread_Manager::instance ()->wait ();
#else
ACE_ERROR ((LM_ERROR,
"threads *and* processes not supported on this platform\n%"));
#endif /* ACE_HAS_THREADS */
}
int
main (int, char *[])
{
ACE_START_TEST ("Mutex_Test");
spawn ();
ACE_END_TEST;
return 0;
}
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