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Diffstat (limited to 'externals/mysql/my_alarm.h')
| -rw-r--r-- | externals/mysql/my_alarm.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/externals/mysql/my_alarm.h b/externals/mysql/my_alarm.h new file mode 100644 index 00000000000..dd2d5642f5f --- /dev/null +++ b/externals/mysql/my_alarm.h @@ -0,0 +1,58 @@ +/* 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 |