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// SPDX-License-Identifier: MPL-2.0
// (c) Hare authors <https://harelang.org>
// TODO: Implement FreeBSD version
use errors;
use rt;
// Flags for the [[mlock]] family of operations.
export type mcl = enum uint {
CURRENT = 1,
FUTURE = 2,
ONFAULT = 4,
};
// Locks a region of memory so that it will not be written to swap.
export fn mlock(
addr: *opaque,
length: size,
flags: mcl,
) (void | errors::error) = {
match (rt::mlock2(addr, length, flags)) {
case let err: rt::errno =>
return errors::errno(err);
case void =>
return;
};
};
// Unlocks memory previously locked with [[mlock]].
export fn munlock(addr: *opaque, length: size) (void | errors::error) = {
match (rt::munlock(addr, length)) {
case let err: rt::errno =>
return errors::errno(err);
case void =>
return;
};
};
// Locks the entire process's address space so that it will not be written to
// swap.
export fn mlockall(flags: mcl) (void | errors::error) = {
match (rt::mlockall(flags)) {
case let err: rt::errno =>
return errors::errno(err);
case void =>
return;
};
};
// Unlocks all locked memory in the process's address space.
export fn munlockall() (void | errors::error) = {
match (rt::munlockall()) {
case let err: rt::errno =>
return errors::errno(err);
case void =>
return;
};
};
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