void barber_action()
{
//funkcja bedaca procesem fryzjera
while(1)
{
//this_thread::sleep_for(30ms);
// cout<<"t\n";
int cust;
customer_ready.wait();
queue_lock.wait();
cust=waiting.front();
waiting.pop();
queue_lock.signal();
barber_ready.signal();
//cout<<"lol"<<endl;
do_the_service(cust);
}
}
void notifier()
{
//time_t begin=time(NULL);
while(1)
{
// cout<<"aa"<<endl;
notify_lock.wait();
while(!notifies.empty())
{
pair<int,int> i=notifies.front();
if(i.first==QUEUE_FULL)
cout<<"Kolejka pelna. Nie umieszczono klienta nr "<<i.second<<endl;
else if(i.first==CUSTOMER_PUT_IN_QUEUE)
cout<<"Umieszczono w kolejce klienta nr "<<i.second<<endl;
else // CUSTOMER_SERVICED
cout<<"Obsluzono klienta nr "<<i.second<<endl;
notifies.pop();
}
//clear(notifies);
notify_lock.signal();
this_thread::sleep_for(30ms);
}
}
void task1() // producer task
{
unsigned int data_token = 0;
while(true) {
cout << "\ttask 1 " << " starts some computation at t=" << sc_time_stamp() << endl;
consume(t_prod);
cout << "\ttask 1 " << " dumps data on the circular buffer at t=" << sc_time_stamp() << endl;
#ifdef _USING_SEMAPHORE_FOR_PROTECTING_THE_ACCESS
write_sem.wait();
#endif
unprotected_cbuff.push(data_token);
#ifdef _USING_SEMAPHORE_FOR_PROTECTING_THE_ACCESS
read_sem.post();
#endif
data_token++;
#ifdef _USING_FLAG_FOR_PROTECTING_THE_ACCESS
flag1.set();
#endif
}
}
/**
* Consume a book by filter.
*
* Return number of items consumed.
*/
unsigned int consume(filter &f) {
can_read.acquire();
unsigned int consumed = 0;
#pragma omp critical
{
book *b = find_by_year(f.year);
if (b != NULL) {
unsigned int wants_to_consume = f.get_wants_to_consume();
if (b->count < wants_to_consume)
consumed = b->count;
else
consumed = wants_to_consume;
b->count -= consumed;
if (b->empty()) {
debug << "Deleting " << b->title << endl;
remove(b);
}
f.consume(consumed);
}
else {
can_read.release();
}
}
return consumed;
}
void function(void){
for(int i = 0; i < 5; i++){
counter_mutex.wait();
for(int j = 0; j < 1000; j++){
result = result + sin(counter) * tan(counter);
}
counter++;
counter_mutex.signal();
}
}
void Make(int add) {
int used;
while(!doneUsing){
S.acquire();
if((howMany % 2 == 0 && howMany != used) || (howMany % 3 == 0 && howMany != used)){
common += add;
used = howMany;
}
S.release();
}
}
unsigned long WINAPI barberFunc(void * data) {
while (shopOpen) {
customersWaiting.wait();
seatsMutex.wait();
numberOfFreeSeats++;
barberReady.signal();
seatsMutex.signal();
std::cout << "Barber\tI am cutting someones hair" << std::endl;
Sleep(20);
}
return 0;
}
void customer_action()
{
//funkcja bedaca procesem klienta
time_t begin=time(NULL);
while(1)
{
queue_lock.wait();
// cout<<waiting.size()<<endl;
if( customer_is_to_be_produced())
if(waiting.size()<=MAX_QUEUE)
{
// cout<<"ff"<<endl;
int new_cust=produce_customer();
waiting.push(new_cust);
notify_lock.wait();
notifies.push(make_pair(CUSTOMER_PUT_IN_QUEUE, new_cust));
notify_lock.signal();
customer_ready.signal();
queue_lock.signal();
barber_ready.wait();
// cout<<"ff"<<endl;
}
else
{
notify_lock.wait();
notifies.push(make_pair(QUEUE_FULL, produce_customer()));
notify_lock.signal();
queue_lock.signal();
}
else queue_lock.signal();
// this_thread::sleep_for(30ms);
}
}
void do_the_service(int customer)
{
//funkcja obslugujaca klienta
//tutaj czekamy losowy kwant czasu
srand(time(NULL));
int timer=(rand()%3)+1;
time_t begin_time=time(NULL);
while(time(NULL)-begin_time<timer);
notify_lock.wait();
notifies.push(make_pair(CUSTOMER_SERVICED,customer));
notify_lock.signal();
}
void Use(int procNr) {
int val;
while(!doneUsing){
S.acquire();
if(howMany < 10 && val != common){
cout << procNr << ") reiksme: " << common << endl;
val = common;
howMany++;
} else if (howMany == 10) {
doneUsing = true;
}
S.release();
}
}
void ste_presentation_surface::present(std::uint32_t image_index,
const vk::vk_queue<> &presentation_queue,
const semaphore &wait_semaphore) {
VkSwapchainKHR swapchain = *swap_chain;
VkSemaphore semaphore_handle = wait_semaphore;
VkPresentInfoKHR info = {};
info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
info.pNext = nullptr;
info.waitSemaphoreCount = 1;
info.pWaitSemaphores = &semaphore_handle;
info.swapchainCount = 1;
info.pSwapchains = &swapchain;
info.pImageIndices = &image_index;
info.pResults = nullptr;
// Host wait for semaphore
wait_semaphore.wait_host();
vk::vk_result res;
{
// std::unique_lock<std::mutex> l(shared_data.swap_chain_guard);
res = vkQueuePresentKHR(presentation_queue, &info);
}
// Raise flag to recreate swap-chain
if (res != VK_SUCCESS)
shared_data.swap_chain_optimal_flag.clear(std::memory_order_release);
if (res != VK_SUCCESS && res != VK_SUBOPTIMAL_KHR && res != VK_ERROR_OUT_OF_DATE_KHR) {
throw vk::vk_exception(res);
}
}
ste_presentation_surface::acquire_next_image_return_t ste_presentation_surface::acquire_swapchain_image_impl(
std::uint64_t timeout_ns,
semaphore &presentation_image_ready_semaphore,
const vk::vk_fence<> *presentation_image_ready_fence) const
{
acquire_next_image_return_t ret;
vk::vk_result res = vkAcquireNextImageKHR(*presentation_device,
*swap_chain,
timeout_ns,
presentation_image_ready_semaphore ? static_cast<VkSemaphore>(*presentation_image_ready_semaphore) : vk::vk_null_handle,
presentation_image_ready_fence ? static_cast<VkFence>(*presentation_image_ready_fence) : vk::vk_null_handle,
&ret.image_index);
// Host signal semaphore
presentation_image_ready_semaphore.signal_host();
switch (res.get()) {
case VK_SUBOPTIMAL_KHR:
ret.sub_optimal = true;
case VK_SUCCESS:
ret.image = &swap_chain_images[ret.image_index];
break;
case VK_ERROR_OUT_OF_DATE_KHR:
ret.sub_optimal = true;
break;
default:
throw vk::vk_exception(res);
}
// Furthermore raise flag to recreate swap-chain
if (res != VK_SUCCESS)
shared_data.swap_chain_optimal_flag.clear(std::memory_order_release);
return ret;
}
/**
* Reduce working producer count by 1.
*/
void producer_finished() {
#pragma omp critical
{
producer_count -= 1;
can_read.release();
}
}
unsigned long WINAPI customerFunc(void * data) {
seatsMutex.wait();
if (numberOfFreeSeats > 0) {
numberOfFreeSeats--;
std::cout << ((int) data) << "\tI have taken a seat." << std::endl;
customersWaiting.signal();
seatsMutex.signal();
barberReady.wait();
std::cout << ((int)data) << "\tI am having my hair cut. Yay." << std::endl;
}
else {
seatsMutex.signal();
std::cout << ((int)data) << "\tShop full. Not getting hair cut." << std::endl;
}
return 0;
}
semaphore::semaphore(const semaphore& other)
{
i32 value = other.value();
#if defined(CRAP_PLATFORM_WIN)
_semaphore = CreateSemaphore( 0, value, LMAXIMUMCOUNT, 0 );
#else
sem_init( &_semaphore, 0, value );
#endif
}
pair<int,int> notify_pop()
{
//funkcja pobierajaca komunikat ze stosu komunikatow
//jak nie ma komunikatu, zwracana jest wartosc specjalna
pair <int,int> element;
notify_lock.wait();
if(notifies.empty()) element=make_pair(NO_NOTIFIES,0);
else
{
element=notifies.front();
notifies.pop();
}
notify_lock.signal();
return element;
}
void drive()
{
// do wakeups
for (unsigned i = 0; i<threads.size(); ++i)
{
this_thread::sleep_for(chrono::milliseconds(rand()%100));
sem.notify();
}
}
void task2() // consumer task
{
while(true) {
cout << "Task 2 waits for data at time " << sc_time_stamp() << endl;
#ifdef _USING_FLAG_FOR_PROTECTING_THE_ACCESS
wait(flag1);
#endif
#ifdef _USING_SEMAPHORE_FOR_PROTECTING_THE_ACCESS
read_sem.wait();
#endif
// KisTA model
cout << "task 2 " << "READ " << unprotected_cbuff.pop() << " from circular buffer at t=" << sc_time_stamp() << endl;
consume(t_cons);
cout << "task 2 " << "ends some processing at t=" << sc_time_stamp() << endl;
#ifdef _USING_SEMAPHORE_FOR_PROTECTING_THE_ACCESS
write_sem.post();
#endif
}
}
/**
* Store book into storage.
*/
void store(book &b) {
#pragma omp critical
{
bool saved = false;
for (vector<book>::iterator it = books.begin(); it < books.end(); it++) {
if (it->year == b.year) {
debug << "found existing book " << it->title << ", incrementing from "
<< it->count << " to " << (it->count + b.count) << " by " << b.count << "\n";
it->count += b.count;
saved = true;
}
}
if (! saved) {
debug << "adding new book " << b.title << "\n";
add_book(b);
}
can_read.release();
}
}
void semaphore::operator=( const semaphore& other )
{
reset( other.value() );
}
void run(semaphore & sync_sem)
{
running.store(true, boost::memory_order_relaxed);
sync_sem.post();
perform();
}
