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add Win32 IPI service

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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Paolo Bonzini 2011-03-12 17:44:08 +01:00 committed by Blue Swirl
parent b55c22c65b
commit cc015e9a5d
3 changed files with 22 additions and 13 deletions
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25
cpus.c
View File

@ -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);

9
qemu-thread-posix.c
View File

@ -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();

1
qemu-thread-posix.h
View File

@ -14,5 +14,4 @@ struct QemuThread {
pthread_t thread;
};
void qemu_thread_signal(QemuThread *thread, int sig);
#endif