Re: Building Postgresql under Windows question - Mailing list pgsql-hackers

> -----Original Message-----
> From: Andrew Dunstan [mailto:andrew@dunslane.net]
> Sent: Tuesday, April 28, 2009 12:42 PM
> To: Dann Corbit
> Cc: pgsql-hackers@postgresql.org
> Subject: Re: [HACKERS] Building Postgresql under Windows question
>
>
>
> Dann Corbit wrote:
> > Pg_ctl.exe is exiting with a success code from line 1946 of PG_CTL.C
> >
> > This is not appropriate behavior for a service unless shutdown has
> been
> > requested.
> >
>
> pg_ctl calls *StartServiceCtrlDispatcher*(). It can only get to the
> line
> you mention when called as a service after that call returns. MSDN
> states:
>
> "If *StartServiceCtrlDispatcher* succeeds, it connects the calling
> thread to the service control manager and does not return until all
> running services in the process have entered the SERVICE_STOPPED
> state."
>
> So it appears that something is causing your service to enter that
> state.

It appears that SERVICE_STOPPED comes from here:

static void WINAPI
pgwin32_ServiceMain(DWORD argc, LPTSTR * argv)
{PROCESS_INFORMATION pi;DWORD        ret;DWORD        check_point_start;
/* Initialize variables */status.dwWin32ExitCode = S_OK;status.dwCheckPoint = 0;status.dwWaitHint =
60000;status.dwServiceType= SERVICE_WIN32_OWN_PROCESS;status.dwControlsAccepted = SERVICE_ACCEPT_STOP | 
SERVICE_ACCEPT_SHUTDOWN | SERVICE_ACCEPT_PAUSE_CONTINUE;status.dwServiceSpecificExitCode = 0;status.dwCurrentState =
SERVICE_START_PENDING;
memset(&pi, 0, sizeof(pi));
read_post_opts();
/* Register the control request handler */if ((hStatus = RegisterServiceCtrlHandler(register_servicename,
pgwin32_ServiceHandler)) == (SERVICE_STATUS_HANDLE) 0)    return;
if ((shutdownEvent = CreateEvent(NULL, true, false, NULL)) ==
NULL)    return;
/* Start the postmaster */pgwin32_SetServiceStatus(SERVICE_START_PENDING);if
(!CreateRestrictedProcess(pgwin32_CommandLine(false),&pi, 
true)){    pgwin32_SetServiceStatus(SERVICE_STOPPED);    return;}postmasterPID = pi.dwProcessId;postmasterProcess =
pi.hProcess;CloseHandle(pi.hThread);
if (do_wait){    write_eventlog(EVENTLOG_INFORMATION_TYPE, _("Waiting for
server startup...\n"));    if (test_postmaster_connection(true) == false)    {
write_eventlog(EVENTLOG_INFORMATION_TYPE,
_("Timed out waiting for server startup\n"));        pgwin32_SetServiceStatus(SERVICE_STOPPED);        return;    }
write_eventlog(EVENTLOG_INFORMATION_TYPE,_("Server 
started and accepting connections\n"));}
/* * Save the checkpoint value as it might have been incremented
in * test_postmaster_connection */check_point_start = status.dwCheckPoint;
pgwin32_SetServiceStatus(SERVICE_RUNNING);
/* Wait for quit... */ret = WaitForMultipleObjects(2, shutdownHandles, FALSE,
INFINITE);
pgwin32_SetServiceStatus(SERVICE_STOP_PENDING);switch (ret){    case WAIT_OBJECT_0:        /* shutdown event */
kill(postmasterPID,SIGINT); 
        /*         * Increment the checkpoint and try again Abort
after 12         * checkpoints as the postmaster has probably
hung         */        while (WaitForSingleObject(postmasterProcess,
5000) == WAIT_TIMEOUT && status.dwCheckPoint < 12)            status.dwCheckPoint++;        break;
    case (WAIT_OBJECT_0 + 1):        /* postmaster
went down */        break;
    default:        /* shouldn't get here? */        break;}
CloseHandle(shutdownEvent);CloseHandle(postmasterProcess);
pgwin32_SetServiceStatus(SERVICE_STOPPED);
}

I will set a breakpoint on every place that the status is set to
SERVICE_STOPPED and report what I have found.