thread.h
上传用户:xiaozhuqw
上传日期:2009-11-15
资源大小:1338k
文件大小:4k
- /* Thread management routine header.
- * Copyright (C) 1998 Kunihiro Ishiguro
- *
- * This file is part of GNU Zebra.
- *
- * GNU Zebra 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; either version 2, or (at your option) any
- * later version.
- *
- * GNU Zebra 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 GNU Zebra; see the file COPYING. If not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
- */
- #ifndef _ZEBRA_THREAD_H
- #define _ZEBRA_THREAD_H
- #ifdef HAVE_RUSAGE
- #define RUSAGE_T struct rusage
- #define GETRUSAGE(X) getrusage (RUSAGE_SELF, X);
- #else
- #define RUSAGE_T struct timeval
- #define GETRUSAGE(X) gettimeofday (X, NULL);
- #endif /* HAVE_RUSAGE */
- /* Linked list of thread. */
- struct thread_list
- {
- struct thread *head;
- struct thread *tail;
- int count;
- };
- /* Master of the theads. */
- struct thread_master
- {
- struct thread_list read;
- struct thread_list write;
- struct thread_list timer;
- struct thread_list event;
- struct thread_list ready;
- struct thread_list unuse;
- fd_set readfd;
- fd_set writefd;
- fd_set exceptfd;
- unsigned long alloc;
- };
- /* Thread itself. */
- struct thread
- {
- unsigned char type; /* thread type */
- struct thread *next; /* next pointer of the thread */
- struct thread *prev; /* previous pointer of the thread */
- struct thread_master *master; /* pointer to the struct thread_master. */
- int (*func) (struct thread *); /* event function */
- void *arg; /* event argument */
- union {
- int val; /* second argument of the event. */
- int fd; /* file descriptor in case of read/write. */
- struct timeval sands; /* rest of time sands value. */
- } u;
- RUSAGE_T ru; /* Indepth usage info. */
- };
- /* Thread types. */
- #define THREAD_READ 0
- #define THREAD_WRITE 1
- #define THREAD_TIMER 2
- #define THREAD_EVENT 3
- #define THREAD_READY 4
- #define THREAD_UNUSED 5
- /* Thread yield time. */
- #define THREAD_YIELD_TIME_SLOT 100 * 1000L /* 100ms */
- /* Macros. */
- #define THREAD_ARG(X) ((X)->arg)
- #define THREAD_FD(X) ((X)->u.fd)
- #define THREAD_VAL(X) ((X)->u.val)
- #define THREAD_READ_ON(master,thread,func,arg,sock)
- do {
- if (! thread)
- thread = thread_add_read (master, func, arg, sock);
- } while (0)
- #define THREAD_WRITE_ON(master,thread,func,arg,sock)
- do {
- if (! thread)
- thread = thread_add_write (master, func, arg, sock);
- } while (0)
- #define THREAD_TIMER_ON(master,thread,func,arg,time)
- do {
- if (! thread)
- thread = thread_add_timer (master, func, arg, time);
- } while (0)
- #define THREAD_OFF(thread)
- do {
- if (thread)
- {
- thread_cancel (thread);
- thread = NULL;
- }
- } while (0)
- #define THREAD_READ_OFF(thread) THREAD_OFF(thread)
- #define THREAD_WRITE_OFF(thread) THREAD_OFF(thread)
- #define THREAD_TIMER_OFF(thread) THREAD_OFF(thread)
- /* Prototypes. */
- struct thread_master *thread_master_create ();
- struct thread *thread_add_read (struct thread_master *,
- int (*)(struct thread *), void *, int);
- struct thread *thread_add_write (struct thread_master *,
- int (*)(struct thread *), void *, int);
- struct thread *thread_add_timer (struct thread_master *,
- int (*)(struct thread *), void *, long);
- struct thread *thread_add_event (struct thread_master *,
- int (*)(struct thread *), void *, int );
- void thread_cancel (struct thread *);
- void thread_cancel_event (struct thread_master *, void *);
- struct thread *thread_fetch (struct thread_master *, struct thread *);
- struct thread *thread_execute (struct thread_master *,
- int (*)(struct thread *), void *, int);
- void thread_call (struct thread *);
- char *thread_timer_remain_second (struct thread *);
- #endif /* _ZEBRA_THREAD_H */