/**
* D header file for POSIX.
*
* Authors: Neven Miculinić
*/

module core.sys.posix.sys.msg;

import core.sys.posix.sys.ipc;
public import core.sys.posix.sys.types;
public import core.stdc.config;

version (linux):
extern (C):

public enum MSG_STAT = 11;
public enum MSG_INFO = 12;

public enum MSG_NOERROR = 1 << 12; // octal!10000
public enum  MSG_EXCEPT = 2 << 12; // octal!20000
public enum    MSG_COPY = 4 << 12; // octal!40000

struct msgbuf {
	c_long mtype;    
	char mtext[1];
};

struct msginfo {
	int msgpool;
	int msgmap; 
	int msgmax; 
	int msgmnb; 
	int msgmni; 
	int msgssz; 
	int msgtql; 
	ushort msgseg; 
};

version(Alpha) 
{
	// https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/alpha/bits/msq.h
	alias c_ulong msgqnum_t;	
	alias c_ulong msglen_t;

	struct msqid_ds
	{
		ipc_perm msg_perm;     
		time_t msg_stime;           
		time_t msg_rtime;           
		time_t msg_ctime;           
		c_ulong __msg_cbytes; 
		msgqnum_t msg_qnum;           
		msglen_t msg_qbytes;          
		pid_t msg_lspid;            
		pid_t msg_lrpid;            
		c_ulong __glibc_reserved1;
		c_ulong __glibc_reserved2;
	};
}
else version(HPPA) 
{
	// https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/hppa/bits/msq.h
	alias c_ulong msgqnum_t;	
	alias c_ulong msglen_t;

	// Assuming word size is 32
	struct msqid_ds {
		ipc_perm msg_perm;
		c_ulong __pad1;
		time_t          msg_stime;
		c_ulong __pad2;
		time_t          msg_rtime;
		c_ulong __pad3;
		time_t          msg_ctime;
		c_ulong         __msg_cbytes;
		msgqnum_t       msg_qnum;
		msglen_t        msg_qbytes;
		pid_t           msg_lspid;
		pid_t           msg_lrpid;
		c_ulong __glibc_reserved1;
		c_ulong __glibc_reserved2;
	};

}
else version(MIPS) 
{
	// I have no idea what to do here regarding msqid_ds
	// https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/mips/bits/msq.h
	alias c_ulong msgqnum_t;	
	alias c_ulong msglen_t;
}
else version (PPC) 
{

	//  https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/powerpc/bits/msq.h
	alias c_ulong msgqnum_t;	
	alias c_ulong msglen_t;

	struct msqid_ds {
		ipc_perm msg_perm;
		c_ulong __glibc_reserved1;
		time_t          msg_stime;
		c_ulong __glibc_reserved2;
		time_t          msg_rtime;
		c_ulong __glibc_reserved3;
		time_t          msg_ctime;
		c_ulong         __msg_cbytes;
		msgqnum_t       msg_qnum;
		msglen_t        msg_qbytes;
		pid_t           msg_lspid;
		pid_t           msg_lrpid;
		c_ulong __glibc_reserved4;
		c_ulong __glibc_reserved5;
	};
}
else version (S390) 
{
	// https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/s390/bits/msq.h
	alias c_ulong msgqnum_t;	
	alias c_ulong msglen_t;

	// Assuming wordsize != 64
	struct msqid_ds {
		ipc_perm msg_perm;
		c_ulong __glibc_reserved1;
		time_t          msg_stime;
		c_ulong __glibc_reserved2;
		time_t          msg_rtime;
		c_ulong __glibc_reserved3;
		time_t          msg_ctime;
		c_ulong         __msg_cbytes;
		msgqnum_t       msg_qnum;
		msglen_t        msg_qbytes;
		pid_t           msg_lspid;
		pid_t           msg_lrpid;
		c_ulong __glibc_reserved4;
		c_ulong __glibc_reserved5;
	};
}
else version (SPARC) 
{
	// https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/sparc/bits/msq.h
	alias c_ulong msgqnum_t;	
	alias c_ulong msglen_t;

	// Assuming word size is 32
	struct msqid_ds {
		ipc_perm msg_perm;
		c_ulong __pad1;
		time_t          msg_stime;
		c_ulong __pad2;
		time_t          msg_rtime;
		c_ulong __pad3;
		time_t          msg_ctime;
		c_ulong         __msg_cbytes;
		msgqnum_t       msg_qnum;
		msglen_t        msg_qbytes;
		pid_t           msg_lspid;
		pid_t           msg_lrpid;
		c_ulong __glibc_reserved1;
		c_ulong __glibc_reserved2;
	};
}
else version (X86) 
{
	// https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/x86/bits/msq.h
	alias c_ulong msgqnum_t;	
	alias c_ulong msglen_t;

	struct msqid_ds {
		ipc_perm msg_perm;
		time_t          msg_stime;
		time_t          msg_rtime;
		time_t          msg_ctime;
		c_ulong         __msg_cbytes;
		msgqnum_t       msg_qnum;
		msglen_t        msg_qbytes;
		pid_t           msg_lspid;
		pid_t           msg_lrpid;
		c_ulong __glibc_reserved4;
		c_ulong __glibc_reserved5;
	};
} 
else version (X86_64) 
{
	// Can't find adequate bits.h in https://sourceware.org/git/?p=glibc.git;a=tree;f=sysdeps/unix/sysv/linux/x86_64/bits;h=cd03a84463c9393dd751d78fba19e59aad3e0bb3;hb=HEAD
	// Using the same as in X86 version
	alias c_ulong msgqnum_t;	
	alias c_ulong msglen_t;

	struct msqid_ds {
		ipc_perm msg_perm;
		c_ulong __glibc_reserved1;
		time_t          msg_stime;
		c_ulong __glibc_reserved2;
		time_t          msg_rtime;
		c_ulong __glibc_reserved3;
		time_t          msg_ctime;
		c_ulong         __msg_cbytes;
		msgqnum_t       msg_qnum;
		msglen_t        msg_qbytes;
		pid_t           msg_lspid;
		pid_t           msg_lrpid;
		c_ulong __glibc_reserved4;
		c_ulong __glibc_reserved5;
	};
} 
else version (ARM) 
{
	// https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/generic/bits/msq.h
	alias c_ulong msgqnum_t;	
	alias c_ulong msglen_t;

	struct msqid_ds {
		ipc_perm msg_perm;
		c_ulong __glibc_reserved1;
		time_t          msg_stime;
		c_ulong __glibc_reserved2;
		time_t          msg_rtime;
		c_ulong __glibc_reserved3;
		time_t          msg_ctime;
		c_ulong         __msg_cbytes;
		msgqnum_t       msg_qnum;
		msglen_t        msg_qbytes;
		pid_t           msg_lspid;
		pid_t           msg_lrpid;
		c_ulong __glibc_reserved4;
		c_ulong __glibc_reserved5;
	};
} else 
	static assert(0, "unimplemented");


public enum MSG_MEM_SCALE =  32;
public enum MSGMNI =     16;
public enum MSGMAX =   8192;
public enum MSGMNB =  16384;

int msgctl (int msqid, int cmd, msqid_ds *__buf);
int msgget ( key_t key, int msgflg );
ssize_t msgrcv(int msqid, void *msgp, size_t msgsz, c_long msgtyp, int msgflg);
int msgsnd ( int msqid, msgbuf *msgp, int msgsz, int msgflg );
