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82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/*
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* Server-side change notification management
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*
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* Copyright (C) 1998 Alexandre Julliard
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "winnt.h"
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#include "handle.h"
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#include "thread.h"
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#include "request.h"
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struct change
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{
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struct object obj; /* object header */
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int subtree; /* watch all the subtree */
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int filter; /* notification filter */
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};
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static void change_dump( struct object *obj, int verbose );
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static int change_signaled( struct object *obj, struct thread *thread );
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static const struct object_ops change_ops =
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{
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sizeof(struct change), /* size */
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change_dump, /* dump */
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add_queue, /* add_queue */
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remove_queue, /* remove_queue */
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change_signaled, /* signaled */
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no_satisfied, /* satisfied */
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NULL, /* get_poll_events */
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NULL, /* poll_event */
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no_get_fd, /* get_fd */
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no_flush, /* flush */
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no_get_file_info, /* get_file_info */
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no_destroy /* destroy */
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};
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static struct change *create_change_notification( int subtree, int filter )
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{
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struct change *change;
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if ((change = alloc_object( &change_ops, -1 )))
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{
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change->subtree = subtree;
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change->filter = filter;
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}
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return change;
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}
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static void change_dump( struct object *obj, int verbose )
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{
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struct change *change = (struct change *)obj;
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assert( obj->ops == &change_ops );
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fprintf( stderr, "Change notification sub=%d filter=%08x\n",
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change->subtree, change->filter );
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}
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static int change_signaled( struct object *obj, struct thread *thread )
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{
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/* struct change *change = (struct change *)obj;*/
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assert( obj->ops == &change_ops );
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return 0; /* never signaled for now */
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}
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/* create a change notification */
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DECL_HANDLER(create_change_notification)
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{
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struct change *change;
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req->handle = 0;
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if ((change = create_change_notification( req->subtree, req->filter )))
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{
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req->handle = alloc_handle( current->process, change,
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STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE, 0 );
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release_object( change );
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}
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}
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