Sweden-Number/include/shm_main_blk.h

56 lines
2.0 KiB
C

/***************************************************************************
* Copyright 1995, Technion, Israel Institute of Technology
* Electrical Eng, Software Lab.
* Author: Michael Veksler.
***************************************************************************
* File: shm_main_blk.h
* Purpose: Main Wine's shared memory block
***************************************************************************
*/
#ifndef __WINE_SHM_MAIN_BLK_H
#define __WINE_SHM_MAIN_BLK_H
#ifdef CONFIG_IPC
#include <sys/shm.h>
#include "shm_block.h"
#include "shm_semaph.h"
#include "dde_proc.h"
#include "dde_atom.h"
#include "dde_mem.h"
/*****************************************************************************
*
* main block object
*
*****************************************************************************
*/
#define DDE_HANDLES_BIT_ARRAY_SIZE (DDE_HANDLES/sizeof(int)/8)
#define SHM_MAXID SHMSEG /* maximum shm blocks (Wine's limit) */
struct shm_main_block {
/* NOTE: "block" declaration must be the first */
struct shm_block block;
char magic[64]; /* magic string to identify the block */
int build_lock; /* =1 when data structure not stable yet */
shm_sem sem; /* semaphores for main_block integrity */
struct _dde_proc proc[DDE_PROCS]; /* information about processes */
REL_PTR atoms[DDE_ATOMS]; /* relative reference to global atoms */
/* Translation from global window handles to local handles */
WND_DATA windows[DDE_WINDOWS];
DDE_HWND handles[DDE_HANDLES];
/* bit array stating if a handle is free (bit=0), LSB in */
/* free_handles[0] refers handle 0x8000, the MSB refers 0x801F */
unsigned free_handles[DDE_HANDLES_BIT_ARRAY_SIZE];
};
extern struct shm_main_block *main_block;
int shm_init(void);
void shm_delete_all(int shm_id);
void DDE_mem_init();
int DDE_no_of_attached();
#define DDE_IPC_init() ( (main_block==NULL) ? (DDE_mem_init()) : 0 )
#endif /* CONFIG_IPC */
#endif /* __WINE_SHM_MAIN_BLK_H */