void condvar_wait(Guard& guard, CondVar& condvar,
bool has_timeout, boost::system_time timeout_time = boost::system_time()) {
if (has_timeout) {
condvar.timed_wait(guard, timeout_time);
} else {
condvar.wait(guard);
}
}
virtual void run()
{
CondVar childCreated;
CondVar parentReady;
AliveTestThreadPtr t = new AliveTestThread(childCreated, parentReady);
t->start();
childCreated.waitForSignal();
test(t->isAlive());
parentReady.signal();
t->join();
test(!t->isAlive());
}
void synchronized_await(Mutex& mtx, CondVar& cv) {
CPPA_REQUIRE(!closed());
if (try_block()) {
std::unique_lock<Mutex> guard(mtx);
while (blocked()) cv.wait(guard);
}
}
void
AliveTest::run()
{
//
// Check that calling isAlive() returns the correct result for alive and
// and dead threads.
//
CondVar childCreated;
CondVar parentReady;
AliveTestThreadPtr t = new AliveTestThread(childCreated, parentReady);
IceUtil::ThreadControl c = t->start();
childCreated.waitForSignal();
test(t->isAlive());
parentReady.signal();
c.join();
test(!t->isAlive());
}
void synchronized_incr(Mutex& mtx, CondVar& cv)
{
incr(
[&](self_t& seq)
{
std::unique_lock<Mutex> guard{mtx};
cv.notify_one();
});
}
void synchronized_await(Mutex& mtx, CondVar& cv) {
CAF_ASSERT(! closed());
if (! can_fetch_more() && try_block()) {
std::unique_lock<Mutex> guard(mtx);
while (blocked()) {
cv.wait(guard);
}
}
}
static void
test_cond_var()
{
CondVar cv;
NaCs::tic();
for (int i = 0;i < N;i++) {
cv.notify_one();
}
tocPerCycle();
NaCs::tic();
for (int i = 0;i < N;i++) {
cv.notify_all();
}
tocPerCycle();
std::thread thread([&] {
Locker locker;
for (int i = 0;i < N * 2;i++) {
cv.wait(locker);
std::this_thread::yield();
}
});
thread.detach();
NaCs::tic();
for (int i = 0;i < N;i++) {
cv.notify_one();
}
tocPerCycle();
NaCs::tic();
for (int i = 0;i < N;i++) {
cv.notify_all();
}
tocPerCycle();
}
bool synchronized_await(Mutex& mtx, CondVar& cv, const TimePoint& timeout) {
CAF_ASSERT(!closed());
if (try_block()) {
std::unique_lock<Mutex> guard(mtx);
while (blocked()) {
if (cv.wait_until(guard, timeout) == std::cv_status::timeout) {
// if we're unable to set the queue from blocked to empty,
// than there's a new element in the list
return !try_unblock();
}
}
}
return true;
}
bool synchronized_push_front(Mutex& mtx, CondVar& cv, pointer ptr) {
switch (push_front(ptr)) {
default:
// enqueued message to a running actor's mailbox
return true;
case inbox_result::unblocked_reader: {
std::unique_lock<Mutex> guard(mtx);
cv.notify_one();
return true;
}
case inbox_result::queue_closed:
// actor no longer alive
return false;
}
}
bool synchronized_enqueue(Mutex& mtx, CondVar& cv, pointer new_element) {
switch (enqueue(new_element)) {
case enqueue_result::unblocked_reader: {
std::unique_lock<Mutex> guard(mtx);
cv.notify_one();
return true;
}
case enqueue_result::success:
// enqueued message to a running actor's mailbox
return true;
case enqueue_result::queue_closed:
// actor no longer alive
return false;
}
// should be unreachable
CPPA_CRITICAL("invalid result of enqueue()");
}
size_t pri_synchronized_reset(Mutex& mtx, CondVar& cv)
{
ACTX_ASSERTS(!blocked());
auto c = reset();
if (c != 0)
{
return c;
}
std::unique_lock<Mutex> guard{mtx};
block();
auto _ = gsl::finally([this]() {unblock(); });
c = reset();
while (c == 0)
{
cv.wait(guard);
c = reset();
}
return c;
}
std::pair<size_t, duration_t> synchronized_reset(Mutex& mtx, CondVar& cv, TimeDuration const& timeout)
{
ACTX_ASSERTS(!blocked());
if (timeout <= TimeDuration::zero())
{
auto c = reset();
return std::make_pair(c, TimeDuration::zero());
}
if (timeout >= (TimeDuration::max)())
{
auto nw = eclipse_clock_t::now();
auto c = pri_synchronized_reset(mtx, cv);
return std::make_pair(c, eclipse_clock_t::now() - nw);
}
auto c = reset();
if (c != 0)
{
return std::make_pair(c, TimeDuration::zero());
}
std::unique_lock<Mutex> guard{mtx};
block();
auto _ = gsl::finally([this]() {unblock(); });
c = reset();
if (c != 0)
{
return std::make_pair(c, TimeDuration::zero());
}
auto const timeout_dur =
std::chrono::duration_cast<duration_t>(timeout);
auto curr_timeout = timeout_dur;
auto final_eclipse = TimeDuration::zero();
while (c == 0)
{
auto bt = eclipse_clock_t::now();
auto status = cv.wait_for(guard, curr_timeout);
if (status == std::cv_status::timeout)
{
c = reset();
final_eclipse = timeout_dur;
break;
}
else
{
auto eclipse = eclipse_clock_t::now() - bt;
c = reset();
final_eclipse += eclipse;
if (eclipse >= curr_timeout)
{
break;
}
curr_timeout -= eclipse;
}
}
return std::make_pair(c, final_eclipse);
}
