bool cpu_exec_all (void)
{
static int i = 0;
if (next_cpu == NULL) {
next_cpu = first_cpu;
i = 0;
}
for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu, i++) {
CPUState *env = next_cpu;
rr_run = env->kvm_run;
cpu_number = i;
qemu_clock_enable(vm_clock,
(env->singlestep_enabled & SSTEP_NOTIMER) == 0);
if (qemu_alarm_pending())
break;
if (cpu_can_run(env)) {
if (qemu_cpu_exec(env) == EXCP_DEBUG) {
break;
}
} else if (env->stop) {
break;
}
}
exit_request = 0;
return any_cpu_has_work();
}
bool cpu_exec_all(void)
{
if (next_cpu == NULL)
next_cpu = first_cpu;
for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) {
CPUState *env = next_cpu;
qemu_clock_enable(vm_clock,
(env->singlestep_enabled & SSTEP_NOTIMER) == 0);
if (qemu_alarm_pending())
break;
if (cpu_can_run(env)) {
if (qemu_cpu_exec(env) == EXCP_DEBUG) {
break;
}
} else if (env->stop) {
#ifdef MARSS_QEMU
continue; /* Let other CPUS execute */
#else
break;
#endif
}
#ifdef MARSS_QEMU
if (in_simulation)
/* No need to run for other cpus */
break;
#endif
}
#ifdef MARSS_QEMU
if (!any_cpu_has_work()) {
/* All CPUs are paused, call ptl_simpoint reached
* to check if we need to switch to simulation or not */
ptl_simpoint_reached(0);
}
#endif
exit_request = 0;
return any_cpu_has_work();
}
static void qemu_tcg_wait_io_event(void)
{
CPUState *env;
while (!any_cpu_has_work())
qemu_cond_timedwait(tcg_halt_cond, &qemu_global_mutex, 1000);
qemu_mutex_unlock(&qemu_global_mutex);
/*
* Users of qemu_global_mutex can be starved, having no chance
* to acquire it since this path will get to it first.
* So use another lock to provide fairness.
*/
qemu_mutex_lock(&qemu_fair_mutex);
qemu_mutex_unlock(&qemu_fair_mutex);
qemu_mutex_lock(&qemu_global_mutex);
for (env = first_cpu; env != NULL; env = env->next_cpu) {
qemu_wait_io_event_common(env);
}
}
