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// $Id$
// ============================================================================
//
// = LIBRARY
// tests
//
// = FILENAME
// Manual_Event Test
//
// = DESCRIPTION
// This test verifies the functionality of the <ACE_Manual_Event>
// implementation.
//
// = AUTHOR
// Martin Corino <mcorino@remedy.nl>
//
// ============================================================================
#include "test_config.h"
#include "ace/Manual_Event.h"
#include "ace/Thread.h"
#include "ace/Thread_Manager.h"
#include "ace/Get_Opt.h"
#include "ace/OS_NS_sys_time.h"
#include "ace/OS_NS_time.h"
#include "ace/OS_NS_unistd.h"
#include "ace/Atomic_Op.h"
ACE_RCSID(tests, Manual_Event_Test, "$Id$")
// msec that times are allowed to differ before test fails.
#if defined (ACE_HAS_HI_RES_TIMER) || defined (ACE_HAS_AIX_HI_RES_TIMER) || \
defined (ACE_HAS_PENTIUM) || defined (ACE_HAS_ALPHA_TIMER) || \
defined (ACE_HAS_POWERPC_TIMER)
# define ACE_ALLOWED_SLACK 100
#else /* don't have a high-res timer */
# define ACE_ALLOWED_SLACK 1100
#endif /* don't have a high-res timer */
// Test results, 'success' is 0
static int test_result = 0;
#if defined (ACE_HAS_THREADS)
// Event used in the tests. Start it "unsignalled" (i.e., its initial
// state is 0).
static ACE_Manual_Event evt ((unsigned int) 0);
// Default number of iterations.
static int n_iterations = 10;
// Number of worker threads.
static long n_workers = 10;
// Number of wakeups.
#if defined (ACE_HAS_BUILTIN_ATOMIC_OP)
static ACE_Atomic_Op<ACE_Thread_Mutex, long> n_awoken;
static ACE_Atomic_Op<ACE_Thread_Mutex, long> n_awoken2;
#else
static long n_awoken;
static long n_awoken2;
#endif
// Explain usage and exit.
static void
print_usage_and_die (void)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("usage: %n [-w n_workers] [-n iteration_count]\n")));
ACE_OS::exit (1);
}
static void
parse_args (int argc, ACE_TCHAR *argv[])
{
ACE_Get_Opt get_opt (argc, argv, ACE_TEXT ("w:n:"));
int c;
while ((c = get_opt ()) != -1)
switch (c)
{
case 'w':
n_workers = ACE_OS::atoi (get_opt.opt_arg ());
break;
case 'n':
n_iterations = ACE_OS::atoi (get_opt.opt_arg ());
break;
default:
print_usage_and_die ();
break;
}
}
// Worker tries to acquire the semaphore, hold it for a while, and
// then manually releases it.
static void *
worker (void *)
{
if (evt.wait() == -1)
{
ACE_DEBUG ((LM_ERROR,
ACE_TEXT ("(%P|%t) Failed waiting for pulse()\n")));
return 0;
}
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) awake\n")));
if (++n_awoken < n_workers)
{
ACE_Time_Value wait (1, 0); // Wait 10 sec
ACE_Time_Value tv = ACE_OS::gettimeofday () + wait;
if (evt.wait (&tv) == -1)
{
// verify that we have ETIME
ACE_ASSERT(ACE_OS::last_error() == ETIME);
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) timeout\n")));
}
else
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) awake in time\n")));
if (++n_awoken2 >= (n_workers/2))
evt.reset(); // reset signal (rest times out)
}
}
else
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) last awake; send signal\n")));
// last one wakes others
evt.signal();
ACE_OS::sleep (ACE_Time_Value(0, 200 * 1000 * 100)); // 200 msec
}
if (evt.wait() == -1)
{
ACE_DEBUG ((LM_ERROR,
ACE_TEXT ("(%P|%t) Failed waiting for signal()\n")));
}
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) worker finished\n")));
return 0;
}
#endif /* ACE_HAS_THREADS */
// Test event functionality.
int run_main (int argc, ACE_TCHAR *argv[])
{
ACE_START_TEST (ACE_TEXT ("Manual_Event_Test"));
#if defined (ACE_HAS_THREADS)
parse_args (argc, argv);
if (ACE_Thread_Manager::instance ()->spawn_n
(static_cast<size_t> (n_workers),
ACE_THR_FUNC (worker),
0,
THR_NEW_LWP) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("spawn_n")),
1);
// gives all workers chance to start
ACE_OS::sleep (5);
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("sending pulse()\n")));
// Release the all workers.
evt.pulse ();
// Wait 2 sec
ACE_OS::sleep (2);
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("sending signal()\n")));
// Signal
evt.signal();
ACE_Thread_Manager::instance ()->wait ();
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Manual_Event Test successful\n")));
#else
ACE_UNUSED_ARG (argc);
ACE_UNUSED_ARG (argv);
ACE_ERROR ((LM_INFO,
ACE_TEXT ("Threads not supported on this platform\n")));
#endif /* ACE_HAS_THREADS */
ACE_END_TEST;
return test_result;
}
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