workbench/network/stacks/AROSTCP/bsdsocket/kern/amiga_time.h

   1 /*
   2  * Copyright (C) 1993 AmiTCP/IP Group, <amitcp-group@hut.fi>
   3  *                    Helsinki University of Technology, Finland.
   4  *                    All rights reserved.
   5  * Copyright (C) 2005 Neil Cafferkey
   6  * Copyright (C) 2005 Pavel Fedin
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  20  * MA 02111-1307, USA.
  21  *
  22  */
  23
  24 #ifndef AMIGA_TIME_H
  25 #define AMIGA_TIME_H
  26
  27 #ifndef SYS_CDEFS_H
  28 #include <sys/cdefs.h>
  29 #endif
  30
  31 #ifndef AMIGA_INCLUDES_H
  32 #include <kern/amiga_includes.h>
  33 #endif
  34
  35 /*
  36  * Globals defined in amiga_time.c
  37  */
  38 #ifdef __MORPHOS__
  39 extern struct Library    *TimerBase;
  40 #else
  41 extern struct Device     *TimerBase;
  42 #endif
  43
  44 /*
  45  * Define an extended timerequest to make implementing the UNIX kernel function
  46  * timeout() easier.
  47  */
  48
  49 typedef void (*TimerCallback_t)(void);
  50
  51 struct timeoutRequest {
  52   struct timerequest timeout_request;   /* timer.device sees only this */
  53   struct timeval     timeout_timeval;   /* timeout interval */
  54   TimerCallback_t    timeout_function;  /* timeout function to be called */
  55 };
  56
  57
  58 /*
  59  * Command field must be TR_ADDREQUEST before this is called!
  60  * A request may be sent again ONLY AFTER PREVIOUS REQUEST HAS BEEN RETURNED!
  61  */
  62 static inline void
  63 sendTimeoutRequest(struct timeoutRequest *tr)
  64 {
  65   tr->timeout_request.tr_time = tr->timeout_timeval;
  66   SendIO((struct IORequest *)&(tr->timeout_request));
  67 }
  68
  69 /*
  70  * This MUST be called at splsoftclock()
  71  */
  72 static inline void
  73 handleTimeoutRequest(struct timeoutRequest *tr)
  74 {
  75   /*
  76    * call the function
  77    */
  78   (*(tr->timeout_function))();
  79 }
  80
  81 /*
  82  * prototypes for functions defined in kern/amiga_time.c
  83  */
  84 ULONG timer_init(void);
  85 void timer_deinit(void);
  86 void timer_send(void);
  87 struct timeoutRequest * createTimeoutRequest(TimerCallback_t fun,
  88                                              ULONG seconds, ULONG micros);
  89 void deleteTimeoutRequest(struct timeoutRequest *tr);
  90 BOOL timer_poll(VOID);
  91
  92 #endif /* AMIGA_TIME_H */