121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
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/* Copyright (C) 2000 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* Prototypes when using thr_alarm library functions */
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#ifndef _thr_alarm_h
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#define _thr_alarm_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef USE_ALARM_THREAD
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#define USE_ONE_SIGNAL_HAND /* One must call process_alarm */
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#endif
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#ifdef HAVE_LINUXTHREADS
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#define THR_CLIENT_ALARM SIGALRM
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#else
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#define THR_CLIENT_ALARM SIGUSR1
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#endif
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#ifdef HAVE_rts_threads
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#undef USE_ONE_SIGNAL_HAND
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#define USE_ALARM_THREAD
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#define THR_SERVER_ALARM SIGUSR1
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#else
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#define THR_SERVER_ALARM SIGALRM
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#endif
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typedef struct st_alarm_info
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{
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ulong next_alarm_time;
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uint active_alarms;
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uint max_used_alarms;
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} ALARM_INFO;
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void thr_alarm_info(ALARM_INFO *info);
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#if defined(DONT_USE_THR_ALARM) || !defined(THREAD)
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#define USE_ALARM_THREAD
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#undef USE_ONE_SIGNAL_HAND
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typedef my_bool thr_alarm_t;
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typedef my_bool ALARM;
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#define thr_alarm_init(A) (*(A))=0
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#define thr_alarm_in_use(A) (*(A) != 0)
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#define thr_end_alarm(A)
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#define thr_alarm(A,B,C) ((*(A)=1)-1)
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/* The following should maybe be (*(A)) */
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#define thr_got_alarm(A) 0
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#define init_thr_alarm(A)
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#define thr_alarm_kill(A)
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#define resize_thr_alarm(N)
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#define end_thr_alarm()
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#else
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#if defined(__WIN__)
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typedef struct st_thr_alarm_entry
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{
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rf_SetTimer crono;
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} thr_alarm_entry;
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#elif defined(__EMX__) || defined(OS2)
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typedef struct st_thr_alarm_entry
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{
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uint crono;
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uint event;
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} thr_alarm_entry;
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#else /* System with posix threads */
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typedef int thr_alarm_entry;
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#define thr_got_alarm(thr_alarm) (**(thr_alarm))
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#endif /* __WIN__ */
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typedef thr_alarm_entry* thr_alarm_t;
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typedef struct st_alarm {
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ulong expire_time;
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thr_alarm_entry alarmed; /* set when alarm is due */
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pthread_t thread;
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my_bool malloced;
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} ALARM;
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#define thr_alarm_init(A) (*(A))=0
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#define thr_alarm_in_use(A) (*(A)!= 0)
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void init_thr_alarm(uint max_alarm);
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void resize_thr_alarm(uint max_alarms);
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my_bool thr_alarm(thr_alarm_t *alarmed, uint sec, ALARM *buff);
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void thr_alarm_kill(pthread_t thread_id);
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void thr_end_alarm(thr_alarm_t *alarmed);
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void end_thr_alarm(my_bool free_structures);
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sig_handler process_alarm(int);
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#ifndef thr_got_alarm
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bool thr_got_alarm(thr_alarm_t *alrm);
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#endif
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#endif /* DONT_USE_THR_ALARM */
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* _thr_alarm_h */
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