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// $Id$
// ============================================================================
//
// = LIBRARY
// tests
//
// = FILENAME
// Process_Mutex_Test.cpp
//
// = DESCRIPTION
// Tests a Process Mutex shared between multiple processes
//
// = AUTHOR
// Irfan Pyarali
//
// ============================================================================
#include "ace/Synch.h"
#include "ace/Process.h"
#include "ace/Get_Opt.h"
#include "test_config.h"
static int release_mutex = 1;
static int child_process = 0;
static char *mutex_name = ACE_DEFAULT_MUTEX_A;
// Explain usage and exit.
static void
print_usage_and_die (void)
{
ACE_DEBUG ((LM_DEBUG,
"usage: %n [-d (don't release mutex)] [-c (child process)] [-n mutex name] \n"));
ACE_OS::exit (1);
}
// Parse the command-line arguments and set options.
static void
parse_args (int argc, char *argv[])
{
ACE_Get_Opt get_opt (argc, argv, "dcn:");
int c;
while ((c = get_opt ()) != -1)
switch (c)
{
case 'd':
release_mutex = 0;
break;
case 'c':
child_process = 1;
break;
case 'n':
mutex_name = get_opt.optarg;
break;
default:
print_usage_and_die ();
break;
}
}
static void
acquire_release (void)
{
ACE_Process_Mutex mutex (ACE_WIDE_STRING (mutex_name));
// Make sure the constructor succeeded
ACE_ASSERT (ACE_LOG_MSG->op_status () == 0);
// Grab the lock
ACE_ASSERT (mutex.acquire () == 0);
ACE_DEBUG ((LM_DEBUG, "(%P) Mutex acquired %s\n", mutex_name));
ACE_DEBUG ((LM_DEBUG, "(%P) Working....\n"));
// work
ACE_OS::sleep (2);
// Check if we need to release the mutex
if (release_mutex == 1)
{
ACE_DEBUG ((LM_DEBUG, "(%P) Releasing the mutex %s\n", mutex_name));
ACE_ASSERT (mutex.release () == 0);
}
}
int
main (int argc, char *argv[])
{
parse_args (argc, argv);
// Child process code
if (child_process)
{
ACE_APPEND_LOG ("Process_Mutex_Test-children");
acquire_release ();
ACE_END_LOG;
}
else
{
ACE_START_TEST ("Process_Mutex_Test");
ACE_INIT_LOG ("Process_Mutex_Test-children");
char *s_argv[6];
s_argv[0] = "Process_Mutex_Test" ACE_PLATFORM_EXE_SUFFIX;
s_argv[1] = "-c"; // child/slave process
s_argv[2] = "-n";
s_argv[3] = mutex_name;
if (release_mutex == 0)
s_argv[4] = "-d";
else
s_argv[4] = 0;
s_argv[5] = 0;
// Spawn ACE_MAX_ITERATIONS processes which will contend for the lock
ACE_Process servers[ACE_MAX_ITERATIONS];
int i;
for (i = 0; i < ACE_MAX_ITERATIONS; i++)
{
ACE_ASSERT (servers[i].start (s_argv) != -1);
ACE_DEBUG ((LM_DEBUG, "Server forked with pid = %d.\n", servers[i].getpid ()));
}
for (i = 0; i < ACE_MAX_ITERATIONS; i++)
{
// Wait for the process we created to exit.
ACE_ASSERT (servers[i].wait () != -1);
ACE_DEBUG ((LM_DEBUG, "Server %d finished\n", servers[i].getpid ()));
}
ACE_END_TEST;
}
return 0;
}
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