Function eventfd [src]

Prototype

pub fn eventfd(initval: u32, flags: u32) EventFdError!i32

Parameters

initval: u32flags: u32

Possible Errors

ProcessFdQuotaExceeded

SystemFdQuotaExceeded

SystemResources

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 eventfd(initval: u32, flags: u32) EventFdError!i32 {
    const rc = system.eventfd(initval, flags);
    switch (errno(rc)) {
        .SUCCESS => return @intCast(rc),
        else => |err| return unexpectedErrno(err),

        .INVAL => unreachable, // invalid parameters
        .MFILE => return error.ProcessFdQuotaExceeded,
        .NFILE => return error.SystemFdQuotaExceeded,
        .NODEV => return error.SystemResources,
        .NOMEM => return error.SystemResources,
    }
}  