Function pipe [src]

Creates a unidirectional data channel that can be used for interprocess communication.

Prototype

pub fn pipe() PipeError![2]fd_t

Possible Errors

ProcessFdQuotaExceeded

SystemFdQuotaExceeded

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 pipe() PipeError![2]fd_t {
    var fds: [2]fd_t = undefined;
    switch (errno(system.pipe(&fds))) {
        .SUCCESS => return fds,
        .INVAL => unreachable, // Invalid parameters to pipe()
        .FAULT => unreachable, // Invalid fds pointer
        .NFILE => return error.SystemFdQuotaExceeded,
        .MFILE => return error.ProcessFdQuotaExceeded,
        else => |err| return unexpectedErrno(err),
    }
}  