1 /***************************************************************************
2 * Copyright 1995, Technion, Israel Institute of Technology
3 * Electrical Eng, Software Lab.
4 * Author: Michael Veksler.
5 ***************************************************************************
7 * Purpose: Main Wine's shared memory block
8 ***************************************************************************
10 #ifndef __WINE_SHM_MAIN_BLK_H
11 #define __WINE_SHM_MAIN_BLK_H
13 #include "shm_block.h"
14 #include "shm_semaph.h"
18 /*****************************************************************************
22 *****************************************************************************
28 #endif /* __inline__ */
30 #define DDE_HANDLES_BIT_ARRAY_SIZE (DDE_HANDLES/sizeof(int)/8)
32 #define SHM_MAXID SHMSEG /* maximum shm blocks (Wine's limit) */
33 struct shm_main_block {
34 /* NOTE: "block" declaration must be the first */
35 struct shm_block block;
36 char magic[64]; /* magic string to identify the block */
37 int build_lock; /* =1 when data structure not stable yet */
38 shm_sem sem; /* semaphores for main_block integrity */
39 struct _dde_proc proc[DDE_PROCS]; /* information about processes */
40 REL_PTR atoms[DDE_ATOMS]; /* relative reference to global atoms */
41 /* Translation from global window handles to local handles */
42 WND_DATA windows[DDE_WINDOWS];
43 DDE_HWND handles[DDE_HANDLES];
44 /* bit array stating if a handle is free (bit=0), LSB in */
45 /* free_handles[0] refers handle 0x8000, the MSB refers 0x801F */
46 unsigned free_handles[DDE_HANDLES_BIT_ARRAY_SIZE];
48 extern struct shm_main_block *main_block;
50 void shm_delete_all(int shm_id);
52 int DDE_no_of_attached();
53 #define DDE_IPC_init() ( (main_block==NULL) ? (DDE_mem_init()) : 0 )
55 #endif /* __WINE_SHM_MAIN_BLK_H */