90 lines
1.6 KiB
C++
90 lines
1.6 KiB
C++
/* sys/shm.h
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Copyright 2001 Red Hat Inc.
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Written by Robert Collins <rbtcollins@hotmail.com>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#ifndef _SYS_SHM_H
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#define _SYS_SHM_H
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#include <sys/ipc.h>
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#define SHM_RDONLY 1
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/* 64 Kb was hardcoded for x86. MS states this may change, but we need it in the header
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* file.
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*/
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#define SHMLBA 65536
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#define SHM_RND 1
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typedef long int shmatt_t;
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#if defined(__INSIDE_CYGWIN__) && defined(__cplusplus)
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class _shmattach {
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public:
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void *data;
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int shmflg;
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class _shmattach *next;
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};
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class shmid_ds {
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public:
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struct ipc_perm shm_perm;
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size_t shm_segsz;
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pid_t shm_lpid;
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pid_t shm_cpid;
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shmatt_t shm_nattch;
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time_t shm_atime;
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time_t shm_dtime;
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time_t shm_ctime;
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void *mapptr;
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};
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class shmnode {
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public:
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class shmid_ds * shmds;
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int shm_id;
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class shmnode *next;
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key_t key;
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HANDLE filemap;
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HANDLE attachmap;
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class _shmattach *attachhead;
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};
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#else
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/* this is what we return when queried. It has no bitwise correspondence
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* the internal structures
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*/
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struct shmid_ds {
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struct ipc_perm shm_perm;
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size_t shm_segsz;
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pid_t shm_lpid;
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pid_t shm_cpid;
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shmatt_t shm_nattch;
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time_t shm_atime;
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time_t shm_dtime;
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time_t shm_ctime;
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};
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#endif /* __INSIDE_CYGWIN__ */
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void *shmat(int, const void *, int);
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int shmctl(int, int, struct shmid_ds *);
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int shmdt(const void *);
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int shmget(key_t, size_t, int);
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#endif /* _SYS_SHM_H */
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#ifdef __cplusplus
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}
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#endif
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