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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/sem.h - XSI semaphore facility
foreign lib {
/*
Provides various semaphore control operation as specified by cmd.
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/semctl.html ]]
*/
@(link_name=LSEMCTL)
semctl :: proc(semid: FD, semnum: c.int, cmd: Sem_Cmd, #c_vararg args: ..semun) -> c.int ---
/*
Returns the semaphore identifier associated with key.
Returns: -1 (setting errno) on failure, a semaphore file descriptor otherwise
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/semget.html ]]
*/
semget :: proc(key: key_t, nsems: c.int, semflg: IPC_Flags) -> FD ---
/*
Perform atomically a user-defined array of semaphore operations in array order on the set of
semaphores associated with the semaphore identifier specified by the argument semid.
[[ More; https://pubs.opengroup.org/onlinepubs/9699919799/functions/semop.html ]]
*/
semop :: proc(semid: FD, sops: [^]sembuf, nsops: c.size_t) -> result ---
}
Sem_Cmd :: enum c.int {
RMID = IPC_RMID,
SET = IPC_SET,
STAT = IPC_STAT,
// Returns the value of semncnt.
GETNCNT = GETNCNT,
// Returns the value of sempid.
GETPID = GETPID,
// Return the value of semval.
GETVAL = GETVAL,
// Returns the value of semval for each semaphore in the semaphore set.
GETALL = GETALL,
// Returns the value of semzcnt.
GETZCNT = GETZCNT,
// Sets the value of semval to arg.val.
SETVAL = SETVAL,
// Sets the value of semval for each semaphore in the set.
SETALL = SETALL,
}
semun :: struct #raw_union {
val: c.int,
buf: ^semid_ds,
array: [^]c.ushort,
}
when ODIN_OS == .NetBSD {
@(private) LSEMCTL :: "__semctl50"
} else {
@(private) LSEMCTL :: "semctl"
}
when ODIN_OS == .Darwin || ODIN_OS == .FreeBSD || ODIN_OS == .NetBSD || ODIN_OS == .OpenBSD {
SEM_UNDO :: 0o10000
GETNCNT :: 3
GETPID :: 4
GETVAL :: 5
GETALL :: 6
GETZCNT :: 7
SETVAL :: 8
SETALL :: 9
when ODIN_OS == .Darwin {
semid_ds :: struct #max_field_align(4) {
sem_perm: ipc_perm, /* [PSX] operation permission structure */
sem_base: c.int32_t, /* 32 bit base ptr for semaphore set */
sem_nsems: c.ushort, /* [PSX] number of semaphores in set */
sem_otime: time_t, /* [PSX] last semop() */
sem_pad1: c.int32_t,
sem_ctime: time_t, /* [PSX] last time changed by semctl() */
sem_pad2: c.int32_t,
sem_pad3: [4]c.int32_t,
}
} else when ODIN_OS == .FreeBSD {
semid_ds :: struct {
sem_perm: ipc_perm, /* [PSX] operation permission structure */
sem_base: rawptr, /* 32 bit base ptr for semaphore set */
sem_nsems: c.ushort, /* [PSX] number of semaphores in set */
sem_otime: time_t, /* [PSX] last semop() */
sem_ctime: time_t, /* [PSX] last time changed by semctl() */
}
} else when ODIN_OS == .NetBSD {
semid_ds :: struct {
sem_perm: ipc_perm, /* [PSX] operation permission structure */
sem_nsems: c.ushort, /* [PSX] number of semaphores in set */
sem_otime: time_t, /* [PSX] last semop() */
sem_ctime: time_t, /* [PSX] last time changed by semctl() */
_sem_base: rawptr, /* 32 bit base ptr for semaphore set */
}
} else when ODIN_OS == .OpenBSD {
semid_ds :: struct {
sem_perm: ipc_perm, /* [PSX] operation permission structure */
sem_nsems: c.ushort, /* [PSX] number of semaphores in set */
sem_otime: time_t, /* [PSX] last semop() */
sem_pad1: c.long,
sem_ctime: time_t, /* [PSX] last time changed by semctl() */
sem_pad2: c.long,
sem_pad3: [4]c.long,
}
}
sembuf :: struct {
sem_num: c.ushort, /* [PSX] semaphore number */
sem_op: c.short, /* [PSX] semaphore operation */
sem_flg: c.short, /* [PSX] operation flags */
}
} else when ODIN_OS == .Linux {
SEM_UNDO :: 0x1000 // undo the operation on exit
// Commands for `semctl'.
GETPID :: 11
GETVAL :: 12
GETALL :: 13
GETNCNT :: 14
GETZCNT :: 15
SETVAL :: 16
SETALL :: 17
when ODIN_ARCH == .arm64 {
semid_ds :: struct {
sem_perm: ipc_perm, // [PSX] operation permission structure
sem_otime: time_t, // [PSX] last semop()
sem_ctime: time_t, // [PSX] last time changed by semctl()
sem_nsems: c.ulong, // [PSX] number of semaphores in set
__glibc_reserved3: c.ulong,
__glibc_reserved4: c.ulong,
}
} else {
semid_ds :: struct {
sem_perm: ipc_perm, // [PSX] operation permission structure
sem_otime: time_t, // [PSX] last semop()
__sem_otime_high: c.ulong,
sem_ctime: time_t, // [PSX] last time changed by semctl()
__sem_ctime_high: c.ulong,
sem_nsems: c.ulong, // [PSX] number of semaphores in set
__glibc_reserved3: c.ulong,
__glibc_reserved4: c.ulong,
}
}
sembuf :: struct {
sem_num: c.ushort, /* [PSX] semaphore number */
sem_op: c.short, /* [PSX] semaphore operation */
sem_flg: c.short, /* [PSX] operation flags */
}
} else when ODIN_OS == .Haiku {
SEM_UNDO :: 10 // undo the operation on exit
// Commands for `semctl'.
GETPID :: 3
GETVAL :: 4
GETALL :: 5
GETNCNT :: 6
GETZCNT :: 7
SETVAL :: 8
SETALL :: 9
semid_ds :: struct {
sem_perm: ipc_perm, // [PSX] operation permission structure
sem_nsems: c.ushort, // [PSX] number of semaphores in set
sem_otime: time_t, // [PSX] last semop()
sem_ctime: time_t, // [PSX] last time changed by semctl()
}
sembuf :: struct {
sem_num: c.ushort, /* [PSX] semaphore number */
sem_op: c.short, /* [PSX] semaphore operation */
sem_flg: c.short, /* [PSX] operation flags */
}
}
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