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Improvements to the task shutdown process:

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A shutdown event specification is no longer part of the
	isc_task_create() API.

	Multiple shutdown events can be requested with isc_task_onshutdown().
	Shutdown events are posted LIFO.

	The ability to send events can be enabled and disabled with
	isc_task_allowsend().

	Event actions return void; the only way to shutdown a task is to
	call isc_task_shutdown().

	There are no implicit event discards anymore.  (There is no need for
	them, since event actions cannot request immediate shutdown anymore.)
This commit is contained in:
Bob Halley
1998-12-16 02:02:10 +00:00
parent 8cfc44208a
commit 131b0092c6
2 changed files with 130 additions and 101 deletions
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12
lib/isc/include/isc/task.h
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@@ -23,7 +23,6 @@
#include <isc/list.h>
#include <isc/mem.h>
#include <isc/boolean.h>
#include <isc/result.h>
@@ -47,7 +46,7 @@ typedef struct isc_taskmgr isc_taskmgr_t;
*/
typedef int isc_eventtype_t;
typedef isc_boolean_t (*isc_taskaction_t)(isc_task_t *, isc_event_t *);
typedef void (*isc_taskaction_t)(isc_task_t *, isc_event_t *);
typedef void (*isc_eventdestructor_t)(isc_event_t *);
/*
@@ -84,8 +83,6 @@ void isc_event_free(isc_event_t **);
***/
isc_result_t isc_task_create(isc_taskmgr_t *,
isc_taskaction_t,
void *,
unsigned int,
isc_task_t **);
void isc_task_attach(isc_task_t *,
@@ -94,7 +91,12 @@ void isc_task_detach(isc_task_t **);
isc_result_t isc_task_send(isc_task_t *,
isc_event_t **);
unsigned int isc_task_purge(isc_task_t *, void *,
isc_eventtype_t);
isc_eventtype_t);
isc_result_t isc_task_allowsend(isc_task_t *,
isc_boolean_t);
isc_result_t isc_task_onshutdown(isc_task_t *,
isc_taskaction_t,
void *);
void isc_task_shutdown(isc_task_t *);
void isc_task_destroy(isc_task_t **);