mirror of
https://github.com/reactos/wine.git
synced 2024-12-13 06:16:14 +00:00
240d8ed7e9
Signed-off-by: Sebastian Lackner <sebastian@fds-team.de> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
254 lines
7.7 KiB
C
254 lines
7.7 KiB
C
/*
|
|
* Server-side IO completion ports implementation
|
|
*
|
|
* Copyright (C) 2007 Andrey Turkin
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*
|
|
*/
|
|
|
|
/* FIXMEs:
|
|
* - built-in wait queues used which means:
|
|
* + threads are awaken FIFO and not LIFO as native does
|
|
* + "max concurrent active threads" parameter not used
|
|
* + completion handle is waitable, while native isn't
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
|
|
#include "ntstatus.h"
|
|
#define WIN32_NO_STATUS
|
|
#include "windef.h"
|
|
#include "winternl.h"
|
|
|
|
#include "wine/unicode.h"
|
|
#include "object.h"
|
|
#include "file.h"
|
|
#include "handle.h"
|
|
#include "request.h"
|
|
|
|
|
|
struct completion
|
|
{
|
|
struct object obj;
|
|
struct list queue;
|
|
unsigned int depth;
|
|
};
|
|
|
|
static void completion_dump( struct object*, int );
|
|
static struct object_type *completion_get_type( struct object *obj );
|
|
static int completion_signaled( struct object *obj, struct wait_queue_entry *entry );
|
|
static unsigned int completion_map_access( struct object *obj, unsigned int access );
|
|
static void completion_destroy( struct object * );
|
|
|
|
static const struct object_ops completion_ops =
|
|
{
|
|
sizeof(struct completion), /* size */
|
|
completion_dump, /* dump */
|
|
completion_get_type, /* get_type */
|
|
add_queue, /* add_queue */
|
|
remove_queue, /* remove_queue */
|
|
completion_signaled, /* signaled */
|
|
no_satisfied, /* satisfied */
|
|
no_signal, /* signal */
|
|
no_get_fd, /* get_fd */
|
|
completion_map_access, /* map_access */
|
|
default_get_sd, /* get_sd */
|
|
default_set_sd, /* set_sd */
|
|
no_lookup_name, /* lookup_name */
|
|
directory_link_name, /* link_name */
|
|
default_unlink_name, /* unlink_name */
|
|
no_open_file, /* open_file */
|
|
no_close_handle, /* close_handle */
|
|
completion_destroy /* destroy */
|
|
};
|
|
|
|
struct comp_msg
|
|
{
|
|
struct list queue_entry;
|
|
apc_param_t ckey;
|
|
apc_param_t cvalue;
|
|
apc_param_t information;
|
|
unsigned int status;
|
|
};
|
|
|
|
static void completion_destroy( struct object *obj)
|
|
{
|
|
struct completion *completion = (struct completion *) obj;
|
|
struct comp_msg *tmp, *next;
|
|
|
|
LIST_FOR_EACH_ENTRY_SAFE( tmp, next, &completion->queue, struct comp_msg, queue_entry )
|
|
{
|
|
free( tmp );
|
|
}
|
|
}
|
|
|
|
static void completion_dump( struct object *obj, int verbose )
|
|
{
|
|
struct completion *completion = (struct completion *) obj;
|
|
|
|
assert( obj->ops == &completion_ops );
|
|
fprintf( stderr, "Completion depth=%u\n", completion->depth );
|
|
}
|
|
|
|
static struct object_type *completion_get_type( struct object *obj )
|
|
{
|
|
static const WCHAR name[] = {'I','o','C','o','m','p','l','e','t','i','o','n'};
|
|
static const struct unicode_str str = { name, sizeof(name) };
|
|
return get_object_type( &str );
|
|
}
|
|
|
|
static int completion_signaled( struct object *obj, struct wait_queue_entry *entry )
|
|
{
|
|
struct completion *completion = (struct completion *)obj;
|
|
|
|
return !list_empty( &completion->queue );
|
|
}
|
|
|
|
static unsigned int completion_map_access( struct object *obj, unsigned int access )
|
|
{
|
|
if (access & GENERIC_READ) access |= STANDARD_RIGHTS_READ | SYNCHRONIZE | IO_COMPLETION_QUERY_STATE;
|
|
if (access & GENERIC_WRITE) access |= STANDARD_RIGHTS_WRITE;
|
|
if (access & GENERIC_EXECUTE) access |= STANDARD_RIGHTS_EXECUTE;
|
|
if (access & GENERIC_ALL) access |= STANDARD_RIGHTS_ALL | IO_COMPLETION_ALL_ACCESS;
|
|
return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
|
|
}
|
|
|
|
static struct completion *create_completion( struct object *root, const struct unicode_str *name,
|
|
unsigned int attr, unsigned int concurrent,
|
|
const struct security_descriptor *sd )
|
|
{
|
|
struct completion *completion;
|
|
|
|
if ((completion = create_named_object( root, &completion_ops, name, attr, sd )))
|
|
{
|
|
if (get_error() != STATUS_OBJECT_NAME_EXISTS)
|
|
{
|
|
list_init( &completion->queue );
|
|
completion->depth = 0;
|
|
}
|
|
}
|
|
|
|
return completion;
|
|
}
|
|
|
|
struct completion *get_completion_obj( struct process *process, obj_handle_t handle, unsigned int access )
|
|
{
|
|
return (struct completion *) get_handle_obj( process, handle, access, &completion_ops );
|
|
}
|
|
|
|
void add_completion( struct completion *completion, apc_param_t ckey, apc_param_t cvalue,
|
|
unsigned int status, apc_param_t information )
|
|
{
|
|
struct comp_msg *msg = mem_alloc( sizeof( *msg ) );
|
|
|
|
if (!msg)
|
|
return;
|
|
|
|
msg->ckey = ckey;
|
|
msg->cvalue = cvalue;
|
|
msg->status = status;
|
|
msg->information = information;
|
|
|
|
list_add_tail( &completion->queue, &msg->queue_entry );
|
|
completion->depth++;
|
|
wake_up( &completion->obj, 1 );
|
|
}
|
|
|
|
/* create a completion */
|
|
DECL_HANDLER(create_completion)
|
|
{
|
|
struct completion *completion;
|
|
struct unicode_str name;
|
|
struct object *root;
|
|
const struct security_descriptor *sd;
|
|
const struct object_attributes *objattr = get_req_object_attributes( &sd, &name, &root );
|
|
|
|
if (!objattr) return;
|
|
|
|
if ((completion = create_completion( root, &name, objattr->attributes, req->concurrent, sd )))
|
|
{
|
|
reply->handle = alloc_handle( current->process, completion, req->access, objattr->attributes );
|
|
release_object( completion );
|
|
}
|
|
|
|
if (root) release_object( root );
|
|
}
|
|
|
|
/* open a completion */
|
|
DECL_HANDLER(open_completion)
|
|
{
|
|
struct unicode_str name = get_req_unicode_str();
|
|
|
|
reply->handle = open_object( current->process, req->rootdir, req->access,
|
|
&completion_ops, &name, req->attributes );
|
|
}
|
|
|
|
|
|
/* add completion to completion port */
|
|
DECL_HANDLER(add_completion)
|
|
{
|
|
struct completion* completion = get_completion_obj( current->process, req->handle, IO_COMPLETION_MODIFY_STATE );
|
|
|
|
if (!completion) return;
|
|
|
|
add_completion( completion, req->ckey, req->cvalue, req->status, req->information );
|
|
|
|
release_object( completion );
|
|
}
|
|
|
|
/* get completion from completion port */
|
|
DECL_HANDLER(remove_completion)
|
|
{
|
|
struct completion* completion = get_completion_obj( current->process, req->handle, IO_COMPLETION_MODIFY_STATE );
|
|
struct list *entry;
|
|
struct comp_msg *msg;
|
|
|
|
if (!completion) return;
|
|
|
|
entry = list_head( &completion->queue );
|
|
if (!entry)
|
|
set_error( STATUS_PENDING );
|
|
else
|
|
{
|
|
list_remove( entry );
|
|
completion->depth--;
|
|
msg = LIST_ENTRY( entry, struct comp_msg, queue_entry );
|
|
reply->ckey = msg->ckey;
|
|
reply->cvalue = msg->cvalue;
|
|
reply->status = msg->status;
|
|
reply->information = msg->information;
|
|
free( msg );
|
|
}
|
|
|
|
release_object( completion );
|
|
}
|
|
|
|
/* get queue depth for completion port */
|
|
DECL_HANDLER(query_completion)
|
|
{
|
|
struct completion* completion = get_completion_obj( current->process, req->handle, IO_COMPLETION_QUERY_STATE );
|
|
|
|
if (!completion) return;
|
|
|
|
reply->depth = completion->depth;
|
|
|
|
release_object( completion );
|
|
}
|