static void qemu_tcg_init_vcpu(void *_env)
{
CPUArchState *env = _env;
/* share a single thread for all cpus with TCG */
if (!tcg_cpu_thread) {
#ifdef CONFIG_S2E
/* Forks inherit parent's memory, therefore we do not want
to allocate new memory regions, just overwrite them. */
if (!s2e_is_forking()) {
env->thread = g_malloc0(sizeof(QemuThread));
env->halt_cond = g_malloc0(sizeof(QemuCond));
}
#else
env->thread = g_malloc0(sizeof(QemuThread));
env->halt_cond = g_malloc0(sizeof(QemuCond));
#endif
qemu_cond_init(env->halt_cond);
tcg_halt_cond = env->halt_cond;
qemu_thread_create(env->thread, qemu_tcg_cpu_thread_fn, env,
QEMU_THREAD_JOINABLE);
#ifdef _WIN32
env->hThread = qemu_thread_get_handle(env->thread);
#endif
while (env->created == 0) {
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
}
tcg_cpu_thread = env->thread;
} else {
env->thread = tcg_cpu_thread;
env->halt_cond = tcg_halt_cond;
}
}
void *qemu_thread_join(QemuThread *thread)
{
QemuThreadData *data;
void *ret;
HANDLE handle;
data = thread->data;
if (!data) {
return NULL;
}
/*
* Because multiple copies of the QemuThread can exist via
* qemu_thread_get_self, we need to store a value that cannot
* leak there. The simplest, non racy way is to store the TID,
* discard the handle that _beginthreadex gives back, and
* get another copy of the handle here.
*/
handle = qemu_thread_get_handle(thread);
if (handle) {
WaitForSingleObject(handle, INFINITE);
CloseHandle(handle);
}
ret = data->ret;
assert(data->mode != QEMU_THREAD_DETACHED);
DeleteCriticalSection(&data->cs);
g_free(data);
return ret;
}
static void qemu_tcg_init_vcpu(CPUState *cpu)
{
/* share a single thread for all cpus with TCG */
if (!tcg_cpu_thread) {
cpu->thread = g_malloc0(sizeof(QemuThread));
cpu->halt_cond = g_malloc0(sizeof(QemuCond));
qemu_cond_init(cpu->halt_cond);
tcg_halt_cond = cpu->halt_cond;
qemu_thread_create(cpu->thread, qemu_tcg_cpu_thread_fn, cpu,
QEMU_THREAD_JOINABLE);
#ifdef _WIN32
cpu->hThread = qemu_thread_get_handle(cpu->thread);
#endif
while (!cpu->created) {
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
}
tcg_cpu_thread = cpu->thread;
} else {
cpu->thread = tcg_cpu_thread;
cpu->halt_cond = tcg_halt_cond;
}
}
static void qemu_tcg_init_vcpu(void *_env)
{
CPUArchState *env = _env;
/* share a single thread for all cpus with TCG */
if (!tcg_cpu_thread) {
env->thread = g_malloc0(sizeof(QemuThread));
env->halt_cond = g_malloc0(sizeof(QemuCond));
qemu_cond_init(env->halt_cond);
tcg_halt_cond = env->halt_cond;
qemu_thread_create(env->thread, qemu_tcg_cpu_thread_fn, env,
QEMU_THREAD_JOINABLE);
#ifdef _WIN32
env->hThread = qemu_thread_get_handle(env->thread);
#endif
while (env->created == 0) {
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
}
tcg_cpu_thread = env->thread;
} else {
env->thread = tcg_cpu_thread;
env->halt_cond = tcg_halt_cond;
}
}
