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#24471: add mlock syscalls to std.os.linux

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kj4tmp@gmail.com 2025-07-15 22:30:58 -07:00 • committed by Alex Rønne Petersen
parent 7ee6dab39f
commit 44ea11d71f
1 changed files with 38 additions and 0 deletions
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38
lib/std/os/linux.zig
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@ -1014,6 +1014,44 @@ pub fn munmap(address: [*]const u8, length: usize) usize {
return syscall2(.munmap, @intFromPtr(address), length);
}
pub fn mlock(address: [*]const u8, length: usize) usize {
return syscall2(.mlock, @intFromPtr(address), length);
}
pub fn munlock(address: [*]const u8, length: usize) usize {
return syscall2(.munlock, @intFromPtr(address), length);
}
pub const MLOCK = packed struct(u32) {
ONFAULT: bool = false,
_1: u31 = 0,
};
pub fn mlock2(address: [*]const u8, length: usize, flags: MLOCK) usize {
return syscall3(.mlock2, @intFromPtr(address), length, @as(u32, @bitCast(flags)));
}
pub const MCL = if (native_arch.isSPARC() or native_arch.isPowerPC()) packed struct(u32) {
_0: u13 = 0,
CURRENT: bool = false,
FUTURE: bool = false,
ONFAULT: bool = false,
_4: u16 = 0,
} else packed struct(u32) {
CURRENT: bool = false,
FUTURE: bool = false,
ONFAULT: bool = false,
_3: u29 = 0,
};
pub fn mlockall(flags: MCL) usize {
return syscall1(.mlockall, @as(u32, @bitCast(flags)));
}
pub fn munlockall() usize {
return syscall0(.munlockall);
}
pub fn poll(fds: [*]pollfd, n: nfds_t, timeout: i32) usize {
if (@hasField(SYS, "poll")) {
return syscall3(.poll, @intFromPtr(fds), n, @as(u32, @bitCast(timeout)));