David Lawrence
40f53fa8d9
own CVS tree will help minimize CVS conflicts. Maybe not. Blame Graff for getting me to trim all trailing whitespace.
97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/*
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* Copyright (C) 1998-2000 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
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* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: event.h,v 1.22 2000/08/01 01:30:08 tale Exp $ */
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#ifndef ISC_EVENT_H
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#define ISC_EVENT_H 1
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#include <isc/lang.h>
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#include <isc/types.h>
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/*****
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***** Events.
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*****/
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typedef void (*isc_eventdestructor_t)(isc_event_t *);
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#define ISC_EVENT_COMMON(ltype) \
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size_t ev_size; \
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unsigned int ev_attributes; \
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void * ev_tag; \
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isc_eventtype_t ev_type; \
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isc_taskaction_t ev_action; \
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void * ev_arg; \
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void * ev_sender; \
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isc_eventdestructor_t ev_destroy; \
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void * ev_destroy_arg; \
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ISC_LINK(ltype) ev_link
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/*
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* Attributes matching a mask of 0x000000ff are reserved for the task library's
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* definition. Attributes of 0xffffff00 may be used by the application
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* or non-ISC libraries.
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*/
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#define ISC_EVENTATTR_NOPURGE 0x00000001
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/*
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* The ISC_EVENTATTR_CANCELED attribute is intended to indicate
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* that an event is delivered as a result of a canceled operation
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* rather than successful completion, by mutual agreement
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* between the sender and receiver. It is not set or used by
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* the task system.
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*/
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#define ISC_EVENTATTR_CANCELED 0x00000002
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#define ISC_EVENT_INIT(event, sz, at, ta, ty, ac, ar, sn, df, da) \
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do { \
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(event)->ev_size = (sz); \
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(event)->ev_attributes = (at); \
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(event)->ev_tag = (ta); \
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(event)->ev_type = (ty); \
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(event)->ev_action = (ac); \
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(event)->ev_arg = (ar); \
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(event)->ev_sender = (sn); \
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(event)->ev_destroy = (df); \
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(event)->ev_destroy_arg = (da); \
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ISC_LINK_INIT((event), ev_link); \
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} while (0)
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/*
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* This structure is public because "subclassing" it may be useful when
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* defining new event types.
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*/
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struct isc_event {
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ISC_EVENT_COMMON(struct isc_event);
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};
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#define ISC_EVENTTYPE_FIRSTEVENT 0x00000000
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#define ISC_EVENTTYPE_LASTEVENT 0xffffffff
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ISC_LANG_BEGINDECLS
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isc_event_t *
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isc_event_allocate(isc_mem_t *, void *, isc_eventtype_t, isc_taskaction_t,
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const void *arg, size_t);
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void
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isc_event_free(isc_event_t **);
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ISC_LANG_ENDDECLS
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#endif /* ISC_EVENT_H */
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