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66 lines
2.7 KiB
C
66 lines
2.7 KiB
C
/*
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* Copyright (c) 2008, XenSource Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of XenSource Inc. nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SCHEDULER_H_
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#define _SCHEDULER_H_
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#include <sys/select.h>
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#include "list.h"
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#define SCHEDULER_POLL_READ_FD 0x1
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#define SCHEDULER_POLL_WRITE_FD 0x2
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#define SCHEDULER_POLL_EXCEPT_FD 0x4
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#define SCHEDULER_POLL_TIMEOUT 0x8
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typedef int event_id_t;
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typedef void (*event_cb_t) (event_id_t id, char mode, void *private);
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typedef struct scheduler {
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fd_set read_fds;
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fd_set write_fds;
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fd_set except_fds;
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struct list_head events;
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int uuid;
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int max_fd;
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int timeout;
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int restart;
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int max_timeout;
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} scheduler_t;
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void scheduler_initialize(scheduler_t *);
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event_id_t scheduler_register_event(scheduler_t *, char mode,
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int fd, int timeout,
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event_cb_t cb, void *private);
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void scheduler_unregister_event(scheduler_t *, event_id_t);
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void scheduler_set_max_timeout(scheduler_t *, int);
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int scheduler_wait_for_events(scheduler_t *);
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#endif
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