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server: Add a generic wait queue to the file descriptor object.

This commit is contained in:
Alexandre Julliard 2007-04-02 12:47:52 +02:00
parent 274115f97f
commit 95ba4b553c
2 changed files with 46 additions and 0 deletions
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44
server/fd.c
View File

@ -173,6 +173,7 @@ struct fd
int poll_index; /* index of fd in poll array */
struct list read_q; /* async readers of this fd */
struct list write_q; /* async writers of this fd */
struct list wait_q; /* other async waiters of this fd */
};
static void fd_dump( struct object *obj, int verbose );
@ -1287,6 +1288,7 @@ static void fd_destroy( struct object *obj )
async_terminate_queue( &fd->read_q, STATUS_CANCELLED );
async_terminate_queue( &fd->write_q, STATUS_CANCELLED );
async_terminate_queue( &fd->wait_q, STATUS_CANCELLED );
remove_fd_locks( fd );
list_remove( &fd->inode_entry );
@ -1365,6 +1367,7 @@ static struct fd *alloc_fd_object(void)
list_init( &fd->locks );
list_init( &fd->read_q );
list_init( &fd->write_q );
list_init( &fd->wait_q );
if ((fd->poll_index = add_poll_user( fd )) == -1)
{
@ -1395,6 +1398,7 @@ struct fd *alloc_pseudo_fd( const struct fd_ops *fd_user_ops, struct object *use
list_init( &fd->locks );
list_init( &fd->read_q );
list_init( &fd->write_q );
list_init( &fd->wait_q );
return fd;
}
@ -1736,6 +1740,9 @@ void fd_queue_async_timeout( struct fd *fd, const async_data_t *data, int type,
case ASYNC_TYPE_WRITE:
queue = &fd->write_q;
break;
case ASYNC_TYPE_WAIT:
queue = &fd->wait_q;
break;
default:
set_error( STATUS_INVALID_PARAMETER );
return;
@ -1751,6 +1758,42 @@ void fd_queue_async_timeout( struct fd *fd, const async_data_t *data, int type,
set_fd_events( fd, fd->fd_ops->get_poll_events( fd ) );
}
void fd_async_terminate_head( struct fd *fd, int type, unsigned int status )
{
switch (type)
{
case ASYNC_TYPE_READ:
async_terminate_head( &fd->read_q, status );
break;
case ASYNC_TYPE_WRITE:
async_terminate_head( &fd->write_q, status );
break;
case ASYNC_TYPE_WAIT:
async_terminate_head( &fd->wait_q, status );
break;
default:
assert(0);
}
}
void fd_async_terminate_queue( struct fd *fd, int type, unsigned int status )
{
switch (type)
{
case ASYNC_TYPE_READ:
async_terminate_queue( &fd->read_q, status );
break;
case ASYNC_TYPE_WRITE:
async_terminate_queue( &fd->write_q, status );
break;
case ASYNC_TYPE_WAIT:
async_terminate_queue( &fd->wait_q, status );
break;
default:
assert(0);
}
}
void default_fd_queue_async( struct fd *fd, const async_data_t *data, int type, int count )
{
fd_queue_async_timeout( fd, data, type, count, NULL );
@ -1760,6 +1803,7 @@ void default_fd_cancel_async( struct fd *fd )
{
async_terminate_queue( &fd->read_q, STATUS_CANCELLED );
async_terminate_queue( &fd->write_q, STATUS_CANCELLED );
async_terminate_queue( &fd->wait_q, STATUS_CANCELLED );
}
/* default flush() routine */

2
server/file.h
View File

@ -70,6 +70,8 @@ extern int default_fd_get_poll_events( struct fd *fd );
extern void default_poll_event( struct fd *fd, int event );
extern void fd_queue_async_timeout( struct fd *fd, const async_data_t *data, int type,
int count, const struct timeval *timeout );
extern void fd_async_terminate_head( struct fd *fd, int type, unsigned int status );
extern void fd_async_terminate_queue( struct fd *fd, int type, unsigned int status );
extern void default_fd_queue_async( struct fd *fd, const async_data_t *data, int type, int count );
extern void default_fd_cancel_async( struct fd *fd );
extern void no_flush( struct fd *fd, struct event **event );