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// $Id$
// Test out the mechanisms provided by the ACE_Process_Manager.
#include "ace/Service_Config.h"
#include "ace/Process_Manager.h"
#if !defined (ACE_WIN32) && defined (ACE_HAS_THREADS)
// Global process manager.
static ACE_Process_Manager proc_mgr;
void *
sig_handler (void *)
{
ACE_Thread_Control tc (ACE_Service_Config::thr_mgr ());
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 ();
switch (pid)
{
case -1:
ACE_ERROR_RETURN ((LM_ERROR, "(%P|%t) %p\n", "reap"), 0);
/* NOTREACHED */
default:
ACE_DEBUG ((LM_DEBUG, "(%P|%t) reaped pid %d\n", pid));
}
}
break;
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 const int DEFAULT_THREADS = ACE_DEFAULT_THREADS;
static const int DEFAULT_ITERATIONS = 100000;
int
main (int argc, char *argv[])
{
ACE_Service_Config daemon;
daemon.open (argv[0]);
::atexit (exithook);
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_Service_Config::thr_mgr ()->spawn (sig_handler, 0, THR_DETACHED) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "spawn"), 1);
int n_processes = argc > 1 ? ACE_OS::atoi (argv[1]) : DEFAULT_THREADS;
ACE_UNUSED_ARG (n_processes);
int n_iterations = argc > 2 ? ACE_OS::atoi (argv[2]) : DEFAULT_ITERATIONS;
ACE_Process_Options options (0);
pid_t pid = proc_mgr.start (options);
switch (pid)
{
case -1:
ACE_ERROR_RETURN ((LM_ERROR, "(%P|%t) %p\n", "start_n"), 1);
/* NOTREACHED */
case 0:
worker (n_iterations);
break;
/* NOTREACHED */
default:
// Give the child a chance to start running.
ACE_OS::sleep (1);
// Shutdown the child.
if (proc_mgr.kill (pid, SIGINT) == -1)
ACE_ERROR_RETURN ((LM_DEBUG, "(%P|%t) %p\n", "kill"), 1);
// Perform a barrier wait until all the processes and threads
// have shut down.
proc_mgr.wait ();
ACE_Service_Config::thr_mgr ()->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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