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server: Create a separate fd object for each mailslot writer. Make them first-class file handles.

This commit is contained in:
Alexandre Julliard 2007-04-12 20:19:28 +02:00
parent 7c434992d6
commit 72ff2bf363
1 changed files with 34 additions and 16 deletions
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50
server/mailslot.c
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@ -56,7 +56,7 @@ struct mailslot
{
struct object obj;
struct fd *fd;
struct fd *write_fd;
int write_fd;
unsigned int max_msgsize;
int read_timeout;
struct list writers;
@ -105,6 +105,7 @@ static const struct fd_ops mailslot_fd_ops =
struct mail_writer
{
struct object obj;
struct fd *fd;
struct mailslot *mailslot;
struct list entry;
unsigned int access;
@ -137,12 +138,13 @@ static enum server_fd_type mail_writer_get_fd_type( struct fd *fd );
static const struct fd_ops mail_writer_fd_ops =
{
NULL, /* get_poll_events */
NULL, /* poll_event */
default_fd_get_poll_events, /* get_poll_events */
default_poll_event, /* poll_event */
no_flush, /* flush */
mail_writer_get_fd_type, /* get_fd_type */
no_queue_async, /* queue_async */
NULL /* cancel_async */
default_fd_queue_async, /* queue_async */
default_fd_reselect_async, /* reselect_async */
default_fd_cancel_async /* cancel_async */
};
@ -195,11 +197,13 @@ static void mailslot_destroy( struct object *obj)
struct mailslot *mailslot = (struct mailslot *) obj;
assert( mailslot->fd );
assert( mailslot->write_fd );
shutdown( get_unix_fd( mailslot->fd ), SHUT_RDWR );
if (mailslot->write_fd != -1)
{
shutdown( mailslot->write_fd, SHUT_RDWR );
close( mailslot->write_fd );
}
release_object( mailslot->fd );
release_object( mailslot->write_fd );
}
static void mailslot_dump( struct object *obj, int verbose )
@ -236,6 +240,7 @@ static struct object *mailslot_open_file( struct object *obj, unsigned int acces
{
struct mailslot *mailslot = (struct mailslot *)obj;
struct mail_writer *writer;
int unix_fd;
if (!(sharing & FILE_SHARE_READ))
{
@ -258,13 +263,27 @@ static struct object *mailslot_open_file( struct object *obj, unsigned int acces
}
}
if (!(writer = alloc_object( &mail_writer_ops ))) return NULL;
if ((unix_fd = dup( mailslot->write_fd )) == -1)
{
file_set_error();
return NULL;
}
if (!(writer = alloc_object( &mail_writer_ops )))
{
close( unix_fd );
return NULL;
}
grab_object( mailslot );
writer->mailslot = mailslot;
writer->access = mail_writer_map_access( &writer->obj, access );
writer->sharing = sharing;
list_add_head( &mailslot->writers, &writer->entry );
if (!(writer->fd = create_anonymous_fd( &mail_writer_fd_ops, unix_fd, &writer->obj, options )))
{
release_object( writer );
return NULL;
}
return &writer->obj;
}
@ -396,7 +415,7 @@ static struct mailslot *create_mailslot( struct directory *root,
if (!mailslot) return NULL;
mailslot->fd = NULL;
mailslot->write_fd = NULL;
mailslot->write_fd = -1;
mailslot->max_msgsize = max_msgsize;
mailslot->read_timeout = read_timeout;
list_init( &mailslot->writers );
@ -406,11 +425,10 @@ static struct mailslot *create_mailslot( struct directory *root,
fcntl( fds[0], F_SETFL, O_NONBLOCK );
fcntl( fds[1], F_SETFL, O_NONBLOCK );
shutdown( fds[0], SHUT_RD );
mailslot->write_fd = fds[0];
mailslot->fd = create_anonymous_fd( &mailslot_fd_ops, fds[1], &mailslot->obj,
FILE_SYNCHRONOUS_IO_NONALERT );
mailslot->write_fd = create_anonymous_fd( &mail_writer_fd_ops, fds[0], &mailslot->obj,
FILE_SYNCHRONOUS_IO_NONALERT );
if (mailslot->fd && mailslot->write_fd) return mailslot;
if (mailslot->fd) return mailslot;
}
else file_set_error();
@ -427,6 +445,7 @@ static void mail_writer_destroy( struct object *obj)
{
struct mail_writer *writer = (struct mail_writer *) obj;
if (writer->fd) release_object( writer->fd );
list_remove( &writer->entry );
release_object( writer->mailslot );
}
@ -439,8 +458,7 @@ static enum server_fd_type mail_writer_get_fd_type( struct fd *fd )
static struct fd *mail_writer_get_fd( struct object *obj )
{
struct mail_writer *writer = (struct mail_writer *) obj;
return (struct fd *)grab_object( writer->mailslot->write_fd );
return (struct fd *)grab_object( writer->fd );
}
static unsigned int mail_writer_map_access( struct object *obj, unsigned int access )