Sweden-Number/server/object.h

207 lines
7.2 KiB
C

/*
* Wine server objects
*
* Copyright (C) 1998 Alexandre Julliard
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __WINE_SERVER_OBJECT_H
#define __WINE_SERVER_OBJECT_H
#include <sys/poll.h>
#include <sys/time.h>
#include "wine/server_protocol.h"
#define DEBUG_OBJECTS
/* kernel objects */
struct object;
struct object_name;
struct thread;
struct process;
struct file;
struct wait_queue_entry;
struct async;
struct async_queue;
/* operations valid on all objects */
struct object_ops
{
/* size of this object type */
size_t size;
/* dump the object (for debugging) */
void (*dump)(struct object *,int);
/* add a thread to the object wait queue */
int (*add_queue)(struct object *,struct wait_queue_entry *);
/* remove a thread from the object wait queue */
void (*remove_queue)(struct object *,struct wait_queue_entry *);
/* is object signaled? */
int (*signaled)(struct object *,struct thread *);
/* wait satisfied; return 1 if abandoned */
int (*satisfied)(struct object *,struct thread *);
/* get the events we want to poll() for on this object */
int (*get_poll_events)(struct object *);
/* a poll() event occured */
void (*poll_event)(struct object *,int event);
/* return a Unix fd that can be used to read/write from the object */
int (*get_fd)(struct object *);
/* flush the object buffers */
int (*flush)(struct object *);
/* get file information */
int (*get_file_info)(struct object *,struct get_file_info_reply *, int *flags);
/* queue an async operation */
struct async_queue* (*queue_async)(struct object *, struct async *async, int type, int count);
/* destroy on refcount == 0 */
void (*destroy)(struct object *);
};
struct object
{
unsigned int refcount; /* reference count */
int fd; /* file descriptor */
int select; /* select() user id */
const struct object_ops *ops;
struct wait_queue_entry *head;
struct wait_queue_entry *tail;
struct object_name *name;
#ifdef DEBUG_OBJECTS
struct object *prev;
struct object *next;
#endif
};
struct wait_queue_entry
{
struct wait_queue_entry *next;
struct wait_queue_entry *prev;
struct object *obj;
struct thread *thread;
};
extern void *mem_alloc( size_t size ); /* malloc wrapper */
extern void *memdup( const void *data, size_t len );
extern void *alloc_object( const struct object_ops *ops, int fd );
extern void dump_object_name( struct object *obj );
extern void *create_named_object( const struct object_ops *ops, const WCHAR *name, size_t len );
/* grab/release_object can take any pointer, but you better make sure */
/* that the thing pointed to starts with a struct object... */
extern struct object *grab_object( void *obj );
extern void release_object( void *obj );
extern struct object *find_object( const WCHAR *name, size_t len );
extern int no_add_queue( struct object *obj, struct wait_queue_entry *entry );
extern int no_satisfied( struct object *obj, struct thread *thread );
extern int no_get_fd( struct object *obj );
extern int no_flush( struct object *obj );
extern int no_get_file_info( struct object *obj, struct get_file_info_reply *info, int *flags );
extern void no_destroy( struct object *obj );
extern int default_poll_add_queue( struct object *obj, struct wait_queue_entry *entry );
extern void default_poll_remove_queue( struct object *obj, struct wait_queue_entry *entry );
extern int default_poll_signaled( struct object *obj, struct thread *thread );
extern void default_poll_event( struct object *obj, int event );
#ifdef DEBUG_OBJECTS
extern void dump_objects(void);
#endif
/* select functions */
extern int add_select_user( struct object *obj );
extern void remove_select_user( struct object *obj );
extern void change_select_fd( struct object *obj, int fd, int events );
extern void set_select_events( struct object *obj, int events );
extern int check_select_events( int fd, int events );
extern void select_loop(void);
/* timeout functions */
struct timeout_user;
typedef void (*timeout_callback)( void *private );
extern struct timeout_user *add_timeout_user( struct timeval *when,
timeout_callback func, void *private );
extern void remove_timeout_user( struct timeout_user *user );
extern void add_timeout( struct timeval *when, int timeout );
/* return 1 if t1 is before t2 */
static inline int time_before( struct timeval *t1, struct timeval *t2 )
{
return ((t1->tv_sec < t2->tv_sec) ||
((t1->tv_sec == t2->tv_sec) && (t1->tv_usec < t2->tv_usec)));
}
/* event functions */
struct event;
extern struct event *create_event( const WCHAR *name, size_t len,
int manual_reset, int initial_state );
extern struct event *get_event_obj( struct process *process, handle_t handle, unsigned int access );
extern void pulse_event( struct event *event );
extern void set_event( struct event *event );
extern void reset_event( struct event *event );
/* mutex functions */
extern void abandon_mutexes( struct thread *thread );
/* file functions */
extern struct file *get_file_obj( struct process *process, handle_t handle,
unsigned int access );
extern int is_same_file( struct file *file1, struct file *file2 );
extern int get_file_drive_type( struct file *file );
extern int grow_file( struct file *file, int size_high, int size_low );
extern int create_anonymous_file(void);
extern struct file *create_temp_file( int access );
extern void file_set_error(void);
/* serial functions */
int get_serial_async_timeout(struct object *obj, int type, int count);
/* debugger functions */
extern int set_process_debugger( struct process *process, struct thread *debugger );
extern void generate_debug_event( struct thread *thread, int code, void *arg );
extern void generate_startup_debug_events( struct process *process, void *entry );
extern void debug_exit_thread( struct thread *thread );
/* mapping functions */
extern int get_page_size(void);
/* registry functions */
extern void init_registry(void);
extern void close_registry(void);
/* atom functions */
extern void close_atom_table(void);
extern int grab_global_atom( atom_t atom );
extern void release_global_atom( atom_t atom );
/* global variables */
/* command-line options */
extern int debug_level;
extern int persistent_server;
/* server start time used for GetTickCount() */
extern unsigned int server_start_ticks;
#endif /* __WINE_SERVER_OBJECT_H */