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#+build linux, darwin, netbsd, openbsd, freebsd, haiku
package posix
import "core:c"
when ODIN_OS == .Darwin {
foreign import lib "system:System"
} else {
foreign import lib "system:c"
}
// sys/msg.h = XSI message queue structures
foreign lib {
/*
Provides various operation as specified by the given cmd.
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/msgctl.html ]]
*/
@(link_name=LMSGCTL)
msgctl :: proc(msqid: FD, cmd: IPC_Cmd, buf: ^msqid_ds) -> result ---
/*
Returns the message queue identifier associated with the argument key.
Returns: -1 (setting errno) on failure, the identifier otherwise
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/msgget.html ]]
*/
msgget :: proc(key: key_t, msgflg: IPC_Flags) -> FD ---
/*
Read a message from the queue.
Returns: -1 (setting errno) on failure, the bytes received otherwise
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/msgrcv.html ]]
*/
msgrcv :: proc(
msgid: FD,
msgp: rawptr,
msgsz: c.size_t,
msgtyp: c.long,
msgflg: IPC_Flags,
) -> c.ssize_t ---
/*
Send a message on the queue.
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/msgsnd.html ]]
*/
msgsnd :: proc(msgid: FD, msgp: rawptr, msgsz: c.size_t, msgflg: IPC_Flags) -> result ---
}
when ODIN_OS == .NetBSD {
@(private) LMSGCTL :: "__msgctl50"
} else {
@(private) LMSGCTL :: "msgctl"
}
when ODIN_OS == .Darwin {
msgqnum_t :: distinct c.ulong
msglen_t :: distinct c.ulong
MSG_NOERROR :: 0o10000
msqid_ds :: struct #max_field_align(4) {
msg_perm: ipc_perm, /* [PSX] operation permission structure */
msg_first: c.int32_t,
msg_last: c.int32_t,
msg_cbytes: msglen_t,
msg_qnum: msgqnum_t, /* [PSX] number of messages currently on queue */
msg_qbytes: msglen_t, /* [PSX] maximum number of bytes allowed on queue */
msg_lspid: pid_t, /* [PSX] process ID of last msgsnd() */
msg_lrpid: pid_t, /* [PSX] process ID of last msgrcv() */
msg_stime: time_t, /* [PSX] time of last msgsnd() */
msg_pad1: c.int32_t,
msg_rtime: time_t, /* [PSX] time of last msgrcv() */
msg_pad2: c.int32_t,
msg_ctime: time_t, /* [PSX] time of last change */
msg_pad3: c.int32_t,
msg_pad4: [4]c.int32_t,
}
} else when ODIN_OS == .FreeBSD {
msgqnum_t :: distinct c.ulong
msglen_t :: distinct c.ulong
MSG_NOERROR :: 0o10000
msqid_ds :: struct {
msg_perm: ipc_perm, /* [PSX] operation permission structure */
__msg_first: rawptr,
__msg_last: rawptr,
msg_cbytes: msglen_t,
msg_qnum: msgqnum_t, /* [PSX] number of messages currently on queue */
msg_qbytes: msglen_t, /* [PSX] maximum number of bytes allowed on queue */
msg_lspid: pid_t, /* [PSX] process ID of last msgsnd() */
msg_lrpid: pid_t, /* [PSX] process ID of last msgrcv() */
msg_stime: time_t, /* [PSX] time of last msgsnd() */
msg_rtime: time_t, /* [PSX] time of last msgrcv() */
msg_ctime: time_t, /* [PSX] time of last change */
}
} else when ODIN_OS == .NetBSD {
msgqnum_t :: distinct c.ulong
msglen_t :: distinct c.size_t
MSG_NOERROR :: 0o10000
msqid_ds :: struct {
msg_perm: ipc_perm, /* [PSX] operation permission structure */
msg_qnum: msgqnum_t, /* [PSX] number of messages currently on queue */
msg_qbytes: msglen_t, /* [PSX] maximum number of bytes allowed on queue */
msg_lspid: pid_t, /* [PSX] process ID of last msgsnd() */
msg_lrpid: pid_t, /* [PSX] process ID of last msgrcv() */
msg_stime: time_t, /* [PSX] time of last msgsnd() */
msg_rtime: time_t, /* [PSX] time of last msgrcv() */
msg_ctime: time_t, /* [PSX] time of last change */
_msg_first: rawptr,
_msg_last: rawptr,
_msg_cbytes: msglen_t,
}
} else when ODIN_OS == .OpenBSD {
msgqnum_t :: distinct c.ulong
msglen_t :: distinct c.ulong
MSG_NOERROR :: 0o10000
msqid_ds :: struct {
msg_perm: ipc_perm, /* [PSX] operation permission structure */
__msg_first: rawptr,
__msg_last: rawptr,
msg_cbytes: msglen_t,
msg_qnum: msgqnum_t, /* [PSX] number of messages currently on queue */
msg_qbytes: msglen_t, /* [PSX] maximum number of bytes allowed on queue */
msg_lspid: pid_t, /* [PSX] process ID of last msgsnd() */
msg_lrpid: pid_t, /* [PSX] process ID of last msgrcv() */
msg_stime: time_t, /* [PSX] time of last msgsnd() */
msg_pad1: c.long,
msg_rtime: time_t, /* [PSX] time of last msgrcv() */
msg_pad2: c.long,
msg_ctime: time_t, /* [PSX] time of last change */
msg_pad3: c.long,
msg_pad4: [4]c.long,
}
} else when ODIN_OS == .Linux {
msgqnum_t :: distinct c.ulong
msglen_t :: distinct c.ulong
MSG_NOERROR :: 0o10000
msqid_ds :: struct {
msg_perm: ipc_perm, /* [PSX] operation permission structure */
msg_stime: time_t, /* [PSX] time of last msgsnd() */
msg_rtime: time_t, /* [PSX] time of last msgrcv() */
msg_ctime: time_t, /* [PSX] time of last change */
msg_cbytes: c.ulong,
msg_qnum: msgqnum_t, /* [PSX] number of messages currently on queue */
msg_qbytes: msglen_t, /* [PSX] maximum number of bytes allowed on queue */
msg_lspid: pid_t, /* [PSX] process ID of last msgsnd() */
msg_lrpid: pid_t, /* [PSX] process ID of last msgrcv() */
__unused: [2]c.ulong,
}
} else when ODIN_OS == .Haiku {
msgqnum_t :: distinct c.uint32_t
msglen_t :: distinct c.uint32_t
MSG_NOERROR :: 0o10000
msqid_ds :: struct {
msg_perm: ipc_perm, /* [PSX] operation permission structure */
msg_qnum: msgqnum_t, /* [PSX] number of messages currently on queue */
msg_qbytes: msglen_t, /* [PSX] maximum number of bytes allowed on queue */
msg_lspid: pid_t, /* [PSX] process ID of last msgsnd() */
msg_lrpid: pid_t, /* [PSX] process ID of last msgrcv() */
msg_stime: time_t, /* [PSX] time of last msgsnd() */
msg_rtime: time_t, /* [PSX] time of last msgrcv() */
msg_ctime: time_t, /* [PSX] time of last change */
}
}
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