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