server/object.h

   1 /*
   2  * Wine server objects
   3  *
   4  * Copyright (C) 1998 Alexandre Julliard
   5  */
   6
   7 #ifndef __WINE_SERVER_OBJECT_H
   8 #define __WINE_SERVER_OBJECT_H
   9
  10 #ifndef __WINE_SERVER__
  11 #error This file can only be used in the Wine server
  12 #endif
  13
  14 #include <sys/poll.h>
  15 #include <sys/time.h>
  16 #include "server.h"
  17
  18 #define DEBUG_OBJECTS
  19
  20 /* kernel objects */
  21
  22 struct object;
  23 struct object_name;
  24 struct thread;
  25 struct process;
  26 struct file;
  27 struct wait_queue_entry;
  28 struct async;
  29
  30 /* operations valid on all objects */
  31 struct object_ops
  32 {
  33     /* size of this object type */
  34     size_t size;
  35     /* dump the object (for debugging) */
  36     void (*dump)(struct object *,int);
  37     /* add a thread to the object wait queue */
  38     int  (*add_queue)(struct object *,struct wait_queue_entry *);
  39     /* remove a thread from the object wait queue */
  40     void (*remove_queue)(struct object *,struct wait_queue_entry *);
  41     /* is object signaled? */
  42     int  (*signaled)(struct object *,struct thread *);
  43     /* wait satisfied; return 1 if abandoned */
  44     int  (*satisfied)(struct object *,struct thread *);
  45     /* get the events we want to poll() for on this object */
  46     int  (*get_poll_events)(struct object *);
  47     /* a poll() event occured */
  48     void (*poll_event)(struct object *,int event);
  49     /* return a Unix fd that can be used to read/write from the object */
  50     int  (*get_fd)(struct object *);
  51     /* flush the object buffers */
  52     int  (*flush)(struct object *);
  53     /* get file information */
  54     int  (*get_file_info)(struct object *,struct get_file_info_request *);
  55     /* destroy on refcount == 0 */
  56     void (*destroy)(struct object *);
  57 };
  58
  59 struct object
  60 {
  61     unsigned int              refcount;    /* reference count */
  62     int                       fd;          /* file descriptor */
  63     int                       select;      /* select() user id */
  64     const struct object_ops  *ops;
  65     struct wait_queue_entry  *head;
  66     struct wait_queue_entry  *tail;
  67     struct object_name       *name;
  68 #ifdef DEBUG_OBJECTS
  69     struct object            *prev;
  70     struct object            *next;
  71 #endif
  72 };
  73
  74 struct wait_queue_entry
  75 {
  76     struct wait_queue_entry *next;
  77     struct wait_queue_entry *prev;
  78     struct object           *obj;
  79     struct thread           *thread;
  80 };
  81
  82 extern void *mem_alloc( size_t size );  /* malloc wrapper */
  83 extern void *memdup( const void *data, size_t len );
  84 extern void *alloc_object( const struct object_ops *ops, int fd );
  85 extern void dump_object_name( struct object *obj );
  86 extern void *create_named_object( const struct object_ops *ops, const WCHAR *name, size_t len );
  87 /* grab/release_object can take any pointer, but you better make sure */
  88 /* that the thing pointed to starts with a struct object... */
  89 extern struct object *grab_object( void *obj );
  90 extern void release_object( void *obj );
  91 extern struct object *find_object( const WCHAR *name, size_t len );
  92 extern int no_add_queue( struct object *obj, struct wait_queue_entry *entry );
  93 extern int no_satisfied( struct object *obj, struct thread *thread );
  94 extern int no_get_fd( struct object *obj );
  95 extern int no_flush( struct object *obj );
  96 extern int no_get_file_info( struct object *obj, struct get_file_info_request *info );
  97 extern void no_destroy( struct object *obj );
  98 extern int default_poll_add_queue( struct object *obj, struct wait_queue_entry *entry );
  99 extern void default_poll_remove_queue( struct object *obj, struct wait_queue_entry *entry );
 100 extern int default_poll_signaled( struct object *obj, struct thread *thread );
 101 extern void default_poll_event( struct object *obj, int event );
 102 #ifdef DEBUG_OBJECTS
 103 extern void dump_objects(void);
 104 #endif
 105
 106 /* select functions */
 107
 108 extern int add_select_user( struct object *obj );
 109 extern void remove_select_user( struct object *obj );
 110 extern void change_select_fd( struct object *obj, int fd );
 111 extern void set_select_events( struct object *obj, int events );
 112 extern int check_select_events( int fd, int events );
 113 extern void select_loop(void);
 114
 115 /* timeout functions */
 116
 117 struct timeout_user;
 118
 119 typedef void (*timeout_callback)( void *private );
 120
 121 extern struct timeout_user *add_timeout_user( struct timeval *when,
 122                                               timeout_callback func, void *private );
 123 extern void remove_timeout_user( struct timeout_user *user );
 124 extern void add_timeout( struct timeval *when, int timeout );
 125 /* return 1 if t1 is before t2 */
 126 static inline int time_before( struct timeval *t1, struct timeval *t2 )
 127 {
 128     return ((t1->tv_sec < t2->tv_sec) ||
 129             ((t1->tv_sec == t2->tv_sec) && (t1->tv_usec < t2->tv_usec)));
 130 }
 131
 132 /* event functions */
 133
 134 struct event;
 135
 136 extern struct event *create_event( const WCHAR *name, size_t len,
 137                                    int manual_reset, int initial_state );
 138 extern struct event *get_event_obj( struct process *process, handle_t handle, unsigned int access );
 139 extern void pulse_event( struct event *event );
 140 extern void set_event( struct event *event );
 141 extern void reset_event( struct event *event );
 142
 143 /* mutex functions */
 144
 145 extern void abandon_mutexes( struct thread *thread );
 146
 147 /* file functions */
 148
 149 extern struct file *get_file_obj( struct process *process, handle_t handle,
 150                                   unsigned int access );
 151 extern int grow_file( struct file *file, int size_high, int size_low );
 152 extern int create_anonymous_file(void);
 153 extern struct file *create_temp_file( int access );
 154 extern void file_set_error(void);
 155
 156 /* serial functions */
 157
 158 int get_serial_async_timeout(struct object *obj, int type, int count);
 159
 160 /* console functions */
 161
 162 extern int alloc_console( struct process *process );
 163 extern int free_console( struct process *process );
 164
 165 /* debugger functions */
 166
 167 extern int set_process_debugger( struct process *process, struct thread *debugger );
 168 extern void generate_debug_event( struct thread *thread, int code, void *arg );
 169 extern void generate_startup_debug_events( struct process *process, void *entry );
 170 extern void debug_exit_thread( struct thread *thread );
 171
 172 /* mapping functions */
 173
 174 extern int get_page_size(void);
 175
 176 /* registry functions */
 177
 178 extern void init_registry(void);
 179 extern void close_registry(void);
 180
 181 /* atom functions */
 182
 183 extern void close_atom_table(void);
 184
 185 /* global variables */
 186
 187   /* command-line options */
 188 extern int debug_level;
 189 extern int persistent_server;
 190
 191   /* server start time used for GetTickCount() */
 192 extern unsigned int server_start_ticks;
 193
 194 #endif  /* __WINE_SERVER_OBJECT_H */