Ev::recommendedBackends

    (PECL ev >= 0.2.0)

    Ev::recommendedBackends — Returns a bit mask of recommended backends for current platform

    Description

    finalpublicstaticEv::recommendedBackends(): int

    Returns the set of all backends compiled into this binary of libev and also recommended for this platform, meaning it will work for most file descriptor types. This set is often smaller than the one returned by ev_supported_backends() , as for example kqueue is broken on most BSD systems and will not be auto-detected unless it is requested explicitly. This is the set of backends that libev will probe no backends specified explicitly.

    Parameters

    This function has no parameters.

    Return Values

    Returns a bit mask which can containing backend flags combined using bitwise OR operator.

    Examples

    Example #1 Embedding one loop into another

    <?php

    $loop_hi = EvLoop::defaultLoop();
    $loop_lo = NULL;
    $embed = NULL;


    $loop_lo = Ev::embeddableBackends() & Ev::recommendedBackends()
    ? new     EvLoop(Ev::embeddableBackends() & Ev::recommendedBackends())
    :     0;

    if (    $loop_lo) {
    $embed = new EvEmbed($loop_lo, function () {});
    } else {
    $loop_lo = $loop_hi;
    }
    ?>

    See Also

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