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    SubjectRe: [take24 0/6] kevent: Generic event handling mechanism.
    On Tue, Nov 21, 2006 at 11:38:25PM -0800, Ulrich Drepper (drepper@redhat.com) wrote:
    > 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.

    That what I implemented.
    But in this case it will be impossible to have SIGEV_THREAD and SIGEV_KEVENT
    at the same time, it will be just the same as SIGEV_SIGNAL but with
    different delivery mechanism. Is is what you expect for that?

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

    --
    Evgeniy Polyakov
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