Commit cc015e9a authored by Paolo Bonzini's avatar Paolo Bonzini Committed by Blue Swirl
Browse files

add Win32 IPI service 



Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarBlue Swirl <blauwirbel@gmail.com>
parent b55c22c6

cpus.c

+22 −3
Original line number Diff line number Diff line
@@ -854,13 +854,32 @@ static void *qemu_tcg_cpu_thread_fn(void *arg) 
    return NULL;

}



static void qemu_cpu_kick_thread(CPUState *env)

{

#ifndef _WIN32

    int err;



    err = pthread_kill(env->thread->thread, SIG_IPI);

    if (err) {

        fprintf(stderr, "qemu:%s: %s", __func__, strerror(err));

        exit(1);

    }

#else /* _WIN32 */

    if (!qemu_cpu_is_self(env)) {

        SuspendThread(env->thread->thread);

        cpu_signal(0);

        ResumeThread(env->thread->thread);

    }

#endif

}



void qemu_cpu_kick(void *_env)

{

    CPUState *env = _env;



    qemu_cond_broadcast(env->halt_cond);

    if (!env->thread_kicked) {

        qemu_thread_signal(env->thread, SIG_IPI);

        qemu_cpu_kick_thread(env);

        env->thread_kicked = true;

    }

}
@@ -871,7 +890,7 @@ void qemu_cpu_kick_self(void) 
    assert(cpu_single_env);



    if (!cpu_single_env->thread_kicked) {

        qemu_thread_signal(cpu_single_env->thread, SIG_IPI);

        qemu_cpu_kick_thread(cpu_single_env);

        cpu_single_env->thread_kicked = true;

    }

#else
@@ -893,7 +912,7 @@ void qemu_mutex_lock_iothread(void) 
    } else {

        qemu_mutex_lock(&qemu_fair_mutex);

        if (qemu_mutex_trylock(&qemu_global_mutex)) {

            qemu_thread_signal(tcg_cpu_thread, SIG_IPI);

            qemu_cpu_kick_thread(first_cpu);

            qemu_mutex_lock(&qemu_global_mutex);

        }

        qemu_mutex_unlock(&qemu_fair_mutex);

qemu-thread-posix.c

+0 −9
Original line number Diff line number Diff line
@@ -171,15 +171,6 @@ void qemu_thread_create(QemuThread *thread, 
    pthread_sigmask(SIG_SETMASK, &oldset, NULL);

}



void qemu_thread_signal(QemuThread *thread, int sig)

{

    int err;



    err = pthread_kill(thread->thread, sig);

    if (err)

        error_exit(err, __func__);

}



void qemu_thread_get_self(QemuThread *thread)

{

    thread->thread = pthread_self();

qemu-thread-posix.h

+0 −1
Original line number Diff line number Diff line
@@ -14,5 +14,4 @@ struct QemuThread { 
    pthread_t thread;

};



void qemu_thread_signal(QemuThread *thread, int sig);

#endif