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/* cygserver_shm.h
Copyright 2001 Red Hat Inc.
Written by Robert Collins <rbtcollins@hotmail.com>
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include <sys/types.h>
#include "cygwin/cygserver_transport.h"
#include "cygwin/cygserver.h"
#define SHM_CREATE 0
#define SHM_REATTACH 1
#define SHM_ATTACH 2
#define SHM_DETACH 3
class client_request_shm : public client_request
{
public:
#ifndef __INSIDE_CYGWIN__
virtual void serve (transport_layer_base *conn, process_cache *cache);
#endif
client_request_shm (key_t, size_t, int, char psdbuf[4096], pid_t);
client_request_shm ();
client_request_shm (int, int, pid_t);
client_request_shm (int, int);
union {
struct {int type; pid_t pid; int shm_id; key_t key; size_t size; int shmflg; char sd_buf[4096];} in;
struct {int shm_id; HANDLE filemap; HANDLE attachmap; key_t key;} out;
} parameters;
};
#ifndef __INSIDE_CYGWIN__
class shm_cleanup : cleanup_routine
{
public:
virtual void cleanup (long winpid);
};
#endif
#if 0
class _shmattach {
public:
void *data;
class _shmattach *next;
};
class shmid_ds {
public:
struct ipc_perm shm_perm;
size_t shm_segsz;
pid_t shm_lpid;
pid_t shm_cpid;
shmatt_t shm_nattch;
time_t shm_atime;
time_t shm_dtime;
time_t shm_ctime;
HANDLE filemap;
HANDLE attachmap;
void *mapptr;
class _shmattach *attachhead;
};
class shmnode {
public:
class shmid_ds * shmid;
class shmnode *next;
key_t key;
};
//....
struct shmid_ds {
struct ipc_perm shm_perm;
size_t shm_segsz;
pid_t shm_lpid;
pid_t shm_cpid;
shmatt_t shm_nattch;
time_t shm_atime;
time_t shm_dtime;
time_t shm_ctime;
};
void *shmat(int, const void *, int);
int shmctl(int, int, struct shmid_ds *);
int shmdt(const void *);
int shmget(key_t, size_t, int);
#endif
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