Function sigaltstack [src]

Prototype

pub fn sigaltstack(ss: ?*stack_t, old_ss: ?*stack_t) SigaltstackError!void

Parameters

ss: ?*stack_told_ss: ?*stack_t

Possible Errors

PermissionDenied

Attempted to change the signal stack while it was active.

SizeTooSmall

The supplied stack size was less than MINSIGSTKSZ.

Unexpected UnexpectedError

The Operating System returned an undocumented error code.

This error is in theory not possible, but it would be better to handle this error than to invoke undefined behavior.

When this error code is observed, it usually means the Zig Standard Library needs a small patch to add the error code to the error set for the respective function.

Source

  pub fn sigaltstack(ss: ?*stack_t, old_ss: ?*stack_t) SigaltstackError!void {
    switch (errno(system.sigaltstack(ss, old_ss))) {
        .SUCCESS => return,
        .FAULT => unreachable,
        .INVAL => unreachable,
        .NOMEM => return error.SizeTooSmall,
        .PERM => return error.PermissionDenied,
        else => |err| return unexpectedErrno(err),
    }
}  