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move eventclass stuff to eventclass.h; add event stuff

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This commit is contained in:
Bob Halley 1999-05-10 22:51:49 +00:00
parent 75d597c630
commit 44963bb00d
1 changed files with 30 additions and 23 deletions
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53
lib/isc/include/isc/event.h
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@ -18,37 +18,44 @@
#ifndef ISC_EVENT_H
#define ISC_EVENT_H 1
#include <stddef.h>
#include <isc/lang.h>
#include <isc/types.h>
ISC_LANG_BEGINDECLS
/***
*** Registry of Predefined Event Type Classes
***/
/*****
***** Events.
*****/
typedef void (*isc_eventdestructor_t)(isc_event_t *);
/*
* An event class is a 16 bit number, the most sigificant bit of which must be
* zero. Each class may contain up to 65536 events. An event type is
* formed by adding the event number within the class to the class number.
* E.g., the first event in the timer class is ISC_EVENTCLASS_TIMER + 1.
* Event number zero is always reserved in each class.
*/
* This structure is public because "subclassing" it may be useful when
* defining new event types.
*/
struct isc_event {
isc_mem_t * mctx;
size_t size;
void * sender;
isc_eventtype_t type;
isc_taskaction_t action;
void * arg;
isc_eventdestructor_t destroy;
ISC_LINK(struct isc_event) link;
};
#define ISC_EVENTCLASS(eclass) ((eclass) << 16)
#define ISC_EVENTTYPE_FIRSTEVENT 0x00000000
#define ISC_EVENTTYPE_LASTEVENT 0xffffffff
/*
* Classes < 1024 are reserved for ISC use.
*/
#define ISC_EVENTCLASS_TASK ISC_EVENTCLASS(0)
#define ISC_EVENTCLASS_TIMER ISC_EVENTCLASS(1)
#define ISC_EVENTCLASS_SOCKET ISC_EVENTCLASS(2)
#define ISC_EVENTCLASS_FILE ISC_EVENTCLASS(3)
#define ISC_EVENTCLASS_DNS ISC_EVENTCLASS(4)
/*
* Event classes >= 1024 and <= 32767 are reserved for application use.
*/
isc_event_t * isc_event_allocate(isc_mem_t *,
void *,
isc_eventtype_t,
isc_taskaction_t,
void *arg,
size_t);
void isc_event_free(isc_event_t **);
ISC_LANG_ENDDECLS