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// $Id$
// Test out the mechanisms provided by the ACE_Process_Manager.
#include "ace/Service_Config.h"
#include "ace/Thread_Manager.h"
#include "ace/Process_Manager.h"
#include "ace/Get_Opt.h"
ACE_RCSID(Threads, process_manager, "$Id$")
#if !defined (ACE_WIN32) && defined (ACE_HAS_THREADS)
// Global process manager.
static ACE_Process_Manager proc_mgr;
void *
sig_handler (void *)
{
ACE_Sig_Set sigset;
// Register a dummy signal handler so that our disposition isn't
// SIG_IGN (which is the default).
ACE_Sig_Action sa ((ACE_SignalHandler) sig_handler, SIGCHLD);
ACE_UNUSED_ARG (sa);
// Register signal handlers.
sigset.sig_add (SIGINT);
sigset.sig_add (SIGCHLD);
for (;;)
{
int signum = ACE_OS::sigwait (sigset);
ACE_DEBUG ((LM_DEBUG,
"(%P|%t) received signal %S\n",
signum));
switch (signum)
{
case SIGINT:
// Shutdown using <ACE_OS::exit>.
ACE_DEBUG ((LM_DEBUG,
"(%P|%t) shutting down %n%a\n", 1));
/* NOTREACHED */
case SIGCHLD:
for (;;)
{
pid_t pid = proc_mgr.reap ();
if (pid == -1) // No more children to reap.
break;
ACE_DEBUG ((LM_DEBUG, "(%P|%t) reaped pid %d\n", pid));
}
/* NOTREACHED */
case -1:
ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "sigwait"), 0);
/* NOTREACHED */
default:
ACE_ERROR_RETURN ((LM_ERROR,
"(%P|%t) signal %S unexpected\n", signum), 0);
/* NOTREACHED */
}
}
}
static void
worker (size_t iterations)
{
for (size_t i = 0; i < iterations; i++)
if ((i % 100) == 0)
{
ACE_DEBUG ((LM_DEBUG, "(%P|%t) sleeping\n"));
ACE_OS::sleep (5);
}
}
extern "C" void
exithook (void)
{
ACE_DEBUG ((LM_DEBUG, "(%P|%t) later...\n"));
}
static int n_iterations = 100000;
static int child = 0;
// Parse the command-line arguments and set options.
static void
parse_args (int argc, char *argv[])
{
ACE_Get_Opt get_opt (argc, argv, "i:cu");
int c;
while ((c = get_opt ()) != -1)
switch (c)
{
case 'i':
n_iterations = ACE_OS::atoi (get_opt.optarg);
break;
case 'c':
child = 1;
break;
case 'u':
default:
ACE_DEBUG ((LM_DEBUG, "usage:\n"
"-p <processes>\n"
"-i <iterations>\n"));
break;
}
}
int
main (int argc, char *argv[])
{
ACE_Service_Config daemon;
daemon.open (argv[0]);
atexit (exithook);
parse_args (argc, argv);
ACE_Sig_Set sigset (1); // Block all signals.
if (ACE_OS::thr_sigsetmask (SIG_BLOCK, sigset, 0) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "thr_sigsetmask"), 1);
else if (ACE_Thread_Manager::instance ()->spawn ((ACE_THR_FUNC) sig_handler, 0, THR_DETACHED) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "spawn"), 1);
if (child)
{
worker (n_iterations);
return 0;
}
ACE_Process_Options options;
options.command_line ("%s -c", argv[0]);
pid_t pid = proc_mgr.spawn (options);
if (pid == -1)
ACE_ERROR_RETURN ((LM_ERROR, "(%P|%t) %p\n", "start_n"), 1);
else
{
// Give the child a chance to start running.
ACE_OS::sleep (1);
// Shutdown the child.
if (proc_mgr.terminate (pid) == -1)
ACE_ERROR_RETURN ((LM_DEBUG, "(%P|%t) %p\n", "terminate"), 1);
// Perform a barrier wait until all the processes and threads
// have shut down.
proc_mgr.wait ();
ACE_Thread_Manager::instance ()->wait ();
}
return 0;
}
#else
int
main (int, char *[])
{
ACE_ERROR_RETURN ((LM_ERROR, "process manager not supported on this platform\n"), -1);
}
#endif /* !ACE_WIN32 && ACE_HAS_THREADS */
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