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// $Id$
// ============================================================================
//
// = LIBRARY
// tests
//
// = FILENAME
// Process_Semaphore_Test.cpp
//
// = DESCRIPTION
// Tests an ACE Semaphore shared between multiple child processes.
//
// = AUTHOR
// Martin Corino <mcorino@remedy.nl>
//
// ============================================================================
#include "test_config.h"
#include "ace/Mutex.h"
#include "ace/Process.h"
#if defined (ACE_WIN32) || \
defined (ACE_USES_FIFO_SEM) || \
(defined (ACE_HAS_POSIX_SEM) && !defined (ACE_LACKS_NAMED_POSIX_SEM))
# include "ace/Time_Value.h"
# include "ace/OS_NS_sys_time.h"
# include "ace/Semaphore.h"
#else
# include "ace/Process_Semaphore.h"
#endif
#include "ace/Get_Opt.h"
#include "ace/ACE.h"
#include "ace/OS_NS_stdio.h"
#include "ace/OS_NS_string.h"
#include "ace/os_include/os_dirent.h"
ACE_RCSID(tests, Process_Semaphore_Test, "Process_Semaphore_Test.cpp,v 4.42 2003/12/26 21:59:35 shuston Exp")
#if !defined (ACE_LACKS_FORK)
static int iterations = 10;
static int child_process = 0;
static const char *sema_ping_name = "ACE_Ping_Semaphore";
static const char *sema_pong_name = "ACE_Pong_Semaphore";
// Explain usage and exit.
static void
print_usage_and_die (void)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("usage: %n [-i #iterations] [-c (child process)]\n")));
ACE_OS::exit (1);
}
// Parse the command-line arguments and set options.
static void
parse_args (int argc, ACE_TCHAR *argv[])
{
ACE_Get_Arg_Opt<ACE_TCHAR> get_opt (argc, argv, ACE_TEXT ("i:c"));
int c;
while ((c = get_opt ()) != -1)
switch (c)
{
case 'i':
iterations = ACE_OS::atoi (get_opt.opt_arg ());
break;
case 'c':
child_process = 1;
break;
default:
print_usage_and_die ();
break;
}
}
static void
acquire_release (void)
{
#if defined (ACE_WIN32) || \
defined (ACE_USES_FIFO_SEM) || \
(defined (ACE_HAS_POSIX_SEM) && !defined (ACE_LACKS_NAMED_POSIX_SEM))
ACE_Semaphore sema_ping (0, USYNC_PROCESS, ACE_TEXT_TO_TCHAR_IN (sema_ping_name));
ACE_Semaphore sema_pong (0, USYNC_PROCESS, ACE_TEXT_TO_TCHAR_IN (sema_pong_name));
#else
ACE_Process_Semaphore sema_ping (0, ACE_TEXT_TO_TCHAR_IN (sema_ping_name));
ACE_Process_Semaphore sema_pong (0, ACE_TEXT_TO_TCHAR_IN (sema_pong_name));
#endif
// Make sure the constructor succeeded
ACE_ASSERT (ACE_LOG_MSG->op_status () == 0);
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P) Begin ping-pong\n")));
if (child_process)
{
for (int i=0; i<iterations ;++i)
{
sema_ping.release ();
if (sema_pong.acquire ())
ACE_DEBUG ((LM_ERROR,
ACE_TEXT ("(%P) Failed acquiring pong\n")));
else
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P) Pong\n")));
}
#if defined (ACE_WIN32) || \
defined (ACE_USES_FIFO_SEM) || \
(defined (ACE_HAS_POSIX_SEM) && defined (ACE_HAS_POSIX_SEM_TIMEOUT) && \
!defined (ACE_LACKS_NAMED_POSIX_SEM))
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P) Testing timeouts\n")));
// test timed wait
ACE_Time_Value wait = ACE_OS::gettimeofday ();
wait.sec (wait.sec () + 3); // timeout in 3 secs
if (sema_pong.acquire (wait))
ACE_ASSERT(errno == ETIME);
else
ACE_DEBUG ((LM_ERROR,
ACE_TEXT ("(%P) Acquired pong without release()\n")));
sema_ping.release (); // release waiting parent before timeout
#endif
}
else
{
for (int i=0; i<iterations ;++i)
{
if (sema_ping.acquire ())
ACE_DEBUG ((LM_ERROR,
ACE_TEXT ("(%P) Failed acquiring ping\n")));
else
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P) Ping\n")));
sema_pong.release ();
}
#if defined (ACE_WIN32) || \
defined (ACE_USES_FIFO_SEM) || \
(defined (ACE_HAS_POSIX_SEM) && defined (ACE_HAS_POSIX_SEM_TIMEOUT) && \
!defined (ACE_LACKS_NAMED_POSIX_SEM))
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P) Testing timeouts\n")));
// test timed wait
ACE_Time_Value wait = ACE_OS::gettimeofday ();
wait.sec (wait.sec () + 10); // timeout in 10 secs
if (sema_ping.acquire (wait))
{
ACE_ASSERT(errno == ETIME);
ACE_DEBUG ((LM_ERROR,
ACE_TEXT ("(%P) Acquiring pong timed out\n")));
}
#endif
}
}
#endif /* ! ACE_LACKS_FORK */
int
run_main (int argc, ACE_TCHAR *argv[])
{
#if defined (ACE_LACKS_FORK)
ACE_UNUSED_ARG (argc);
ACE_UNUSED_ARG (argv);
ACE_START_TEST (ACE_TEXT ("Process_Semaphore_Test"));
ACE_ERROR ((LM_INFO,
ACE_TEXT ("fork is not supported on this platform\n")));
ACE_END_TEST;
#else
parse_args (argc, argv);
// Child process code.
if (child_process)
{
ACE_START_TEST (ACE_TEXT ("Process_Semaphore_Test-child"));
acquire_release ();
ACE_END_LOG;
}
else
{
ACE_START_TEST (ACE_TEXT ("Process_Semaphore_Test"));
ACE_Process_Options options;
options.command_line (ACE_TEXT (".") ACE_DIRECTORY_SEPARATOR_STR
ACE_TEXT ("Process_Semaphore_Test")
ACE_PLATFORM_EXE_SUFFIX
ACE_TEXT (" -c -i %d"),
iterations);
// Spawn a child process that will contend for the
// lock.
ACE_Process child;
// Spawn the child process.
int result = child.spawn (options);
ACE_ASSERT (result != -1);
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("Parent spawned child process with pid = %d.\n"),
child.getpid ()));
// start test
acquire_release ();
ACE_exitcode child_status;
// Wait for the child processes we created to exit.
ACE_ASSERT (child.wait (&child_status) != -1);
if (child_status == 0)
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("Child %d finished ok\n"),
child.getpid ()));
else
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("Child %d finished with status %d\n"),
child.getpid (), child_status));
ACE_END_TEST;
}
#endif /* ! ACE_LACKS_FORK */
return 0;
}
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