~drizzle-trunk/drizzle/development

/* Copyright (C) 2000 MySQL AB

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

/*

  File to include when we want to use alarm or a loop_counter to display

  some information when a program is running

*/

#ifndef _my_alarm_h

#define _my_alarm_h

#ifdef	__cplusplus

extern "C" {

#endif

extern int volatile my_have_got_alarm;

extern ulong my_time_to_wait_for_lock;

#if defined(HAVE_ALARM) && !defined(NO_ALARM_LOOP)

#include <signal.h>

#define ALARM_VARIABLES uint alarm_old=0; \

			sig_return alarm_signal=0

#define ALARM_INIT	my_have_got_alarm=0 ; \

			alarm_old=(uint) alarm(MY_HOW_OFTEN_TO_ALARM); \

			alarm_signal=signal(SIGALRM,my_set_alarm_variable);

#define ALARM_END	VOID(signal(SIGALRM,alarm_signal)); \

			VOID(alarm(alarm_old));

#define ALARM_TEST	my_have_got_alarm

#ifdef DONT_REMEMBER_SIGNAL

#define ALARM_REINIT	VOID(alarm(MY_HOW_OFTEN_TO_ALARM)); \

			VOID(signal(SIGALRM,my_set_alarm_variable));\

			my_have_got_alarm=0;

#else

#define ALARM_REINIT	VOID(alarm((uint) MY_HOW_OFTEN_TO_ALARM)); \

			my_have_got_alarm=0;

#endif /* DONT_REMEMBER_SIGNAL */

#else

#define ALARM_VARIABLES long alarm_pos=0,alarm_end_pos=MY_HOW_OFTEN_TO_WRITE-1

#define ALARM_INIT

#define ALARM_END

#define ALARM_TEST (alarm_pos++ >= alarm_end_pos)

#define ALARM_REINIT alarm_end_pos+=MY_HOW_OFTEN_TO_WRITE

#endif /* HAVE_ALARM */

#ifdef	__cplusplus

}

#endif

#endif