本文整理汇总了C++中SpinLock::GetInternal方法的典型用法代码示例。如果您正苦于以下问题：C++ SpinLock::GetInternal方法的具体用法？C++ SpinLock::GetInternal怎么用？C++ SpinLock::GetInternal使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SpinLock的用法示例。
在下文中一共展示了SpinLock::GetInternal方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: trylock_or_cancel_get_lock
// See that timer_trylock_or_cancel acquires the lock when the holder releases it.
static bool trylock_or_cancel_get_lock() {
BEGIN_TEST;
// We need 2 or more CPUs for this test.
if (get_num_cpus_online() < 2) {
printf("skipping test trylock_or_cancel_get_lock, not enough online cpus\n");
return true;
}
timer_args arg{};
timer_t t = TIMER_INITIAL_VALUE(t);
SpinLock lock;
arg.lock = lock.GetInternal();
arg.wait = 1;
arch_disable_ints();
uint timer_cpu = arch_curr_cpu_num();
const Deadline deadline = Deadline::no_slack(current_time() + ZX_USEC(100));
timer_set(&t, deadline, timer_trylock_cb, &arg);
// The timer is set to run on timer_cpu, switch to a different CPU, acquire the spinlock then
// signal the callback to proceed.
thread_set_cpu_affinity(get_current_thread(), ~cpu_num_to_mask(timer_cpu));
DEBUG_ASSERT(arch_curr_cpu_num() != timer_cpu);
arch_enable_ints();
{
AutoSpinLock guard(&lock);
while (!atomic_load(&arg.timer_fired)) {
}
// Callback should now be running. Tell it to stop waiting and start trylocking.
atomic_store(&arg.wait, 0);
}
// See that timer_cancel returns false indicating that the timer ran.
ASSERT_FALSE(timer_cancel(&t), "");
// Note, we cannot assert the value of arg.result. We have both released the lock and canceled
// the timer, but we don't know which of these events the timer observed first.
END_TEST;
}