Commit 16ef9d02 authored by Emilio G. Cota's avatar Emilio G. Cota Committed by Paolo Bonzini
Browse files

qemu-thread: handle spurious futex_wait wakeups 



Signed-off-by: default avatarEmilio G. Cota <cota@braap.org>
Message-Id: <1440375847-17603-12-git-send-email-cota@braap.org>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 090d0bfd

util/qemu-thread-posix.c

+10 −1
Original line number Diff line number Diff line
@@ -298,7 +298,16 @@ static inline void futex_wake(QemuEvent *ev, int n) 


static inline void futex_wait(QemuEvent *ev, unsigned val)

{

    futex(ev, FUTEX_WAIT, (int) val, NULL, NULL, 0);

    while (futex(ev, FUTEX_WAIT, (int) val, NULL, NULL, 0)) {

        switch (errno) {

        case EWOULDBLOCK:

            return;

        case EINTR:

            break; /* get out of switch and retry */

        default:

            abort();

        }

    }

}

#else

static inline void futex_wake(QemuEvent *ev, int n)