sched.h

CFL是Unix下的通用抽象库,以简化Unix下的系统软件开发,CFL库中包含几个分组的函数和宏

/* ----------------------------------------------------------------------------
   CFL - A C Foundation Library
   Copyright (C) 1994-2003  Mark A Lindner

   This file is part of CFL.
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library 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
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   ----------------------------------------------------------------------------
*/

#ifndef __cfl_sched_h
#define __cfl_sched_h

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

#include <signal.h>
#include <time.h>

#include <cfl/defs.h>
#include <cfl/data.h>
#include <cfl/util.h>

/* ----------------------------------------------------------------------------
 * real-time scheduler
 * ----------------------------------------------------------------------------
 */

#define C_SCHED_MASK_COUNT 5

typedef struct c_sched_t
  {
#if defined(__SVR4) && defined(__sun)
  timer_t timer;
  struct sigevent evp;
#endif
  void *hook;
  void (*handler)(void);
  c_linklist_t *events;
  } c_sched_t;

typedef struct c_schedevt_t
  {
  c_bitstring_t *mask[C_SCHED_MASK_COUNT];
  c_bool_t once;
  void (*handler)(struct c_schedevt_t *, time_t);
  void (*destructor)(struct c_schedevt_t *);
  void *hook;
  c_bool_t active;
  uint_t id;
  } c_schedevt_t;

extern c_bool_t C_sched_init(void);
extern c_bool_t C_sched_shutdown(void);
extern void C_sched_poll(void);

extern c_schedevt_t *C_sched_event_create(const char *timespec, c_bool_t once,
                                          void *hook,
                                          void (*handler)(c_schedevt_t *,
                                                          time_t),
                                          void (*destructor)(c_schedevt_t *),
                                          uint_t id);

extern c_bool_t C_sched_event_destroy(c_schedevt_t *e);

extern c_bool_t C_sched_event_activate(c_schedevt_t *e);
extern c_bool_t C_sched_event_deactivate(c_schedevt_t *e);
extern c_schedevt_t *C_sched_event_find(uint_t id);

#define C_sched_event_data(D) \
  (D)->hook

#define C_sched_event_id(D) \
  (D)->id

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* __cfl_sched_h */

/* end of library header */