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thr_alarm.h
/* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ /* Prototypes when using thr_alarm library functions */ #ifndef _thr_alarm_h #define _thr_alarm_h #ifdef __cplusplus extern "C" { #endif #ifndef USE_ALARM_THREAD #define USE_ONE_SIGNAL_HAND /* One must call process_alarm */ #endif #ifdef HAVE_rts_threads #undef USE_ONE_SIGNAL_HAND #define USE_ALARM_THREAD #define THR_SERVER_ALARM SIGUSR1 #else #define THR_SERVER_ALARM SIGALRM #endif typedef struct st_alarm_info { time_t next_alarm_time; uint active_alarms; uint max_used_alarms; } ALARM_INFO; void thr_alarm_info(ALARM_INFO *info); extern my_bool my_disable_thr_alarm; #ifdef _WIN32 #define DONT_USE_THR_ALARM #endif #if defined(DONT_USE_THR_ALARM) #define USE_ALARM_THREAD #undef USE_ONE_SIGNAL_HAND typedef my_bool thr_alarm_t; typedef my_bool ALARM; #define thr_alarm_init(A) (*(A))=0 #define thr_alarm_in_use(A) (*(A) != 0) #define thr_end_alarm(A) #define thr_alarm(A,B,C) ((*(A)=1)-1) /* The following should maybe be (*(A)) */ #define thr_got_alarm(A) 0 #define init_thr_alarm(A) #define thr_alarm_kill(A) #define resize_thr_alarm(N) #define end_thr_alarm(A) #else #if defined(_WIN32) typedef struct st_thr_alarm_entry { UINT_PTR crono; } thr_alarm_entry; #else /* System with posix threads */ typedef int thr_alarm_entry; #define thr_got_alarm(thr_alarm) (**(thr_alarm)) #endif /* _WIN32 */ typedef thr_alarm_entry* thr_alarm_t; typedef struct st_alarm { time_t expire_time; thr_alarm_entry alarmed; /* set when alarm is due */ pthread_t thread; my_thread_id thread_id; uint index_in_queue; my_bool malloced; } ALARM; extern uint thr_client_alarm; extern pthread_t alarm_thread; #define thr_alarm_init(A) (*(A))=0 #define thr_alarm_in_use(A) (*(A)!= 0) void init_thr_alarm(uint max_alarm); void resize_thr_alarm(uint max_alarms); my_bool thr_alarm(thr_alarm_t *alarmed, uint sec, ALARM *buff); void thr_alarm_kill(my_thread_id thread_id); void thr_end_alarm(thr_alarm_t *alarmed); void end_thr_alarm(my_bool free_structures); sig_handler process_alarm(int); #ifndef thr_got_alarm my_bool thr_got_alarm(thr_alarm_t *alrm); #endif #endif /* DONT_USE_THR_ALARM */ #ifdef __cplusplus } #endif /* __cplusplus */ #endif /* _thr_alarm_h */
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