#include "./semaphore.h"
#include "../interrupt/guard.h"
#include "../thread/scheduler.h"
uint8_t counter;
Queue<Thread> waiting;
Semaphore::Semaphore(unsigned c) {
  counter=c;
}


void Semaphore::p(Vault &vault) { 
  //resource is frei, läuft direkt weiter
  if (vault.counter > 0)
    vault.counter--;
  //else
  /// thread block, zu aktueller queue hinzufügen und 
//    vault.sch.block(this);
}

//release
void Semaphore::v(Vault &vault) { 
  //Thread* first = waiting.dequeue();
  //if (first != nullptr)
  //  void Scheduler::wakeup(first);
  //else
    vault.counter++;
}