static void *qemu_kvm_cpu_thread_fn(void *arg)
{
CPUArchState *env = arg;
CPUState *cpu = ENV_GET_CPU(env);
int r;
qemu_mutex_lock(&qemu_global_mutex);
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
cpu_single_env = env;
r = kvm_init_vcpu(env);
if (r < 0) {
fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
exit(1);
}
qemu_kvm_init_cpu_signals(env);
/* signal CPU creation */
cpu->created = true;
qemu_cond_signal(&qemu_cpu_cond);
while (1) {
if (cpu_can_run(cpu)) {
r = kvm_cpu_exec(env);
if (r == EXCP_DEBUG) {
cpu_handle_guest_debug(env);
}
}
qemu_kvm_wait_io_event(env);
}
return NULL;
}
static void *iothread_run(void *opaque)
{
IOThread *iothread = opaque;
rcu_register_thread();
my_iothread = iothread;
qemu_mutex_lock(&iothread->init_done_lock);
iothread->thread_id = qemu_get_thread_id();
qemu_cond_signal(&iothread->init_done_cond);
qemu_mutex_unlock(&iothread->init_done_lock);
while (iothread->running) {
aio_poll(iothread->ctx, true);
if (atomic_read(&iothread->worker_context)) {
GMainLoop *loop;
g_main_context_push_thread_default(iothread->worker_context);
iothread->main_loop =
g_main_loop_new(iothread->worker_context, TRUE);
loop = iothread->main_loop;
g_main_loop_run(iothread->main_loop);
iothread->main_loop = NULL;
g_main_loop_unref(loop);
g_main_context_pop_thread_default(iothread->worker_context);
}
}
rcu_unregister_thread();
return NULL;
}
static void *qemu_tcg_cpu_thread_fn(void *arg)
{
CPUState *env = arg;
qemu_tcg_init_cpu_signals();
qemu_thread_get_self(env->thread);
/* signal CPU creation */
qemu_mutex_lock(&qemu_global_mutex);
for (env = first_cpu; env != NULL; env = env->next_cpu) {
env->thread_id = qemu_get_thread_id();
env->created = 1;
}
qemu_cond_signal(&qemu_cpu_cond);
/* wait for initial kick-off after machine start */
while (first_cpu->stopped) {
qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex);
}
while (1) {
cpu_exec_all();
if (use_icount && qemu_next_icount_deadline() <= 0) {
qemu_notify_event();
}
qemu_tcg_wait_io_event();
}
return NULL;
}
static void *iothread_run(void *opaque)
{
IOThread *iothread = opaque;
bool blocking;
rcu_register_thread();
qemu_mutex_lock(&iothread->init_done_lock);
iothread->thread_id = qemu_get_thread_id();
qemu_cond_signal(&iothread->init_done_cond);
qemu_mutex_unlock(&iothread->init_done_lock);
while (!iothread->stopping) {
aio_context_acquire(iothread->ctx);
blocking = true;
while (!iothread->stopping && aio_poll(iothread->ctx, blocking)) {
/* Progress was made, keep going */
blocking = false;
}
aio_context_release(iothread->ctx);
}
rcu_unregister_thread();
return NULL;
}
static void *qemu_kvm_cpu_thread_fn(void *arg)
{
CPUState *env = arg;
int r;
qemu_mutex_lock(&qemu_global_mutex);
qemu_thread_get_self(env->thread);
env->thread_id = qemu_get_thread_id();
r = kvm_init_vcpu(env);
if (r < 0) {
fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
exit(1);
}
qemu_kvm_init_cpu_signals(env);
/* signal CPU creation */
env->created = 1;
qemu_cond_signal(&qemu_cpu_cond);
// TLC profiling
tlc_cpu_profile_init(env);
while (1) {
if (cpu_can_run(env)) {
r = kvm_cpu_exec(env);
if (r == EXCP_DEBUG) {
cpu_handle_guest_debug(env);
}
}
qemu_kvm_wait_io_event(env);
}
return NULL;
}
static void *iothread_run(void *opaque)
{
IOThread *iothread = opaque;
rcu_register_thread();
my_iothread = iothread;
qemu_mutex_lock(&iothread->init_done_lock);
iothread->thread_id = qemu_get_thread_id();
qemu_cond_signal(&iothread->init_done_cond);
qemu_mutex_unlock(&iothread->init_done_lock);
while (!atomic_read(&iothread->stopping)) {
aio_poll(iothread->ctx, true);
}
rcu_unregister_thread();
return NULL;
}
static void *qemu_dummy_cpu_thread_fn(void *arg)
{
#ifdef _WIN32
fprintf(stderr, "qtest is not supported under Windows\n");
exit(1);
#else
CPUArchState *env = arg;
CPUState *cpu = ENV_GET_CPU(env);
sigset_t waitset;
int r;
qemu_mutex_lock_iothread();
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
sigemptyset(&waitset);
sigaddset(&waitset, SIG_IPI);
/* signal CPU creation */
cpu->created = true;
qemu_cond_signal(&qemu_cpu_cond);
cpu_single_env = env;
while (1) {
cpu_single_env = NULL;
qemu_mutex_unlock_iothread();
do {
int sig;
r = sigwait(&waitset, &sig);
} while (r == -1 && (errno == EAGAIN || errno == EINTR));
if (r == -1) {
perror("sigwait");
exit(1);
}
qemu_mutex_lock_iothread();
cpu_single_env = env;
qemu_wait_io_event_common(cpu);
}
return NULL;
#endif
}
static int dynticks_start_timer(struct qemu_alarm_timer *t)
{
struct sigevent ev;
timer_t host_timer;
struct sigaction act;
sigfillset(&act.sa_mask);
act.sa_flags = 0;
act.sa_handler = host_alarm_handler;
sigaction(SIGALRM, &act, NULL);
/*
* Initialize ev struct to 0 to avoid valgrind complaining
* about uninitialized data in timer_create call
*/
memset(&ev, 0, sizeof(ev));
ev.sigev_value.sival_int = 0;
ev.sigev_notify = SIGEV_SIGNAL;
#ifdef SIGEV_THREAD_ID
if (qemu_signalfd_available()) {
ev.sigev_notify = SIGEV_THREAD_ID;
ev._sigev_un._tid = qemu_get_thread_id();
}
#endif /* SIGEV_THREAD_ID */
ev.sigev_signo = SIGALRM;
if (timer_create(CLOCK_REALTIME, &ev, &host_timer)) {
perror("timer_create");
/* disable dynticks */
fprintf(stderr, "Dynamic Ticks disabled\n");
return -1;
}
t->timer = host_timer;
return 0;
}
void qemu_free_stack(void *stack, size_t sz)
{
#ifdef CONFIG_DEBUG_STACK_USAGE
unsigned int usage;
void *ptr;
for (ptr = stack + getpagesize(); ptr < stack + sz;
ptr += sizeof(uint32_t)) {
if (*(uint32_t *)ptr != 0xdeadbeaf) {
break;
}
}
usage = sz - (uintptr_t) (ptr - stack);
if (usage > max_stack_usage) {
error_report("thread %d max stack usage increased from %u to %u",
qemu_get_thread_id(), max_stack_usage, usage);
max_stack_usage = usage;
}
#endif
munmap(stack, sz);
}
static void *qemu_tcg_cpu_thread_fn(void *arg)
{
CPUState *cpu = arg;
CPUArchState *env;
qemu_tcg_init_cpu_signals();
qemu_thread_get_self(cpu->thread);
/* signal CPU creation */
qemu_mutex_lock(&qemu_global_mutex);
for (env = first_cpu; env != NULL; env = env->next_cpu) {
cpu = ENV_GET_CPU(env);
cpu->thread_id = qemu_get_thread_id();
cpu->created = true;
}
qemu_cond_signal(&qemu_cpu_cond);
/* wait for initial kick-off after machine start */
while (ENV_GET_CPU(first_cpu)->stopped) {
qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex);
/* process any pending work */
for (env = first_cpu; env != NULL; env = env->next_cpu) {
qemu_wait_io_event_common(ENV_GET_CPU(env));
}
}
while (1) {
tcg_exec_all();
if (use_icount && qemu_clock_deadline(vm_clock) <= 0) {
qemu_notify_event();
}
qemu_tcg_wait_io_event();
}
return NULL;
}
static void *qemu_tcg_cpu_thread_fn(void *arg)
{
CPUArchState *env = arg;
qemu_tcg_init_cpu_signals();
qemu_thread_get_self(env->thread);
/* signal CPU creation */
qemu_mutex_lock(&qemu_global_mutex);
for (env = first_cpu; env != NULL; env = env->next_cpu) {
env->thread_id = qemu_get_thread_id();
LOGD_CPUS("%s2: Thread ID = %d\n", __func__, env->thread_id);
env->created = 1;
}
qemu_cond_signal(&qemu_cpu_cond);
/* wait for initial kick-off after machine start */
while (first_cpu->stopped) {
qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex);
/* process any pending work */
for (env = first_cpu; env != NULL; env = env->next_cpu) {
qemu_wait_io_event_common(env);
}
}
while (1) {
tcg_exec_all();
if (use_icount && qemu_clock_deadline(vm_clock) <= 0) {
LOGD_CPUS("%s=>qemu_notify_event()\n", __func__);
qemu_notify_event();
}
qemu_tcg_wait_io_event();
}
return NULL;
}
static void tcg_signal_cpu_creation(CPUState *cpu, void *data)
{
cpu->thread_id = qemu_get_thread_id();
cpu->created = true;
}