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    SubjectRe: [take24 0/6] kevent: Generic event handling mechanism.
    Evgeniy Polyakov wrote:
    > I've checked the code.
    > Since it will be a union, it is impossible to use _sigev_thread and it
    > becomes just SIGEV_SIGNAL case with different delivery mechanism.
    > Is it what you want?

    struct sigevent is defined like this:

    typedef struct sigevent {
    sigval_t sigev_value;
    int sigev_signo;
    int sigev_notify;
    union {
    int _pad[SIGEV_PAD_SIZE];
    int _tid;

    struct {
    void (*_function)(sigval_t);
    void *_attribute; /* really pthread_attr_t */
    } _sigev_thread;
    } _sigev_un;
    } sigevent_t;


    For the SIGEV_KEVENT case:

    sigev_notify is set to SIGEV_KEVENT (obviously)

    sigev_value can be used for the void* data passed along with the
    signal, just like in the case of a signal delivery

    Now you need a way to specify the kevent descriptor. Just add

    int _kevent;

    inside the union and if you want

    #define sigev_kevent_descr _sigev_un._kevent

    That should be all.

    --
    ➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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