csce313-mp4pinie64backup/BoundedBuffer.cpp

#include "semaphore.h"
#include "BoundedBuffer.h"
#include <string>
#include <vector>

void BoundedBuffer::push(string item){
    empty->P();
    mutex->P();
    data.push_back(item);
    mutex->V();
    full->V();//increment the number of full slots now.
}

string BoundedBuffer::pop(){
    if(data.size() > 0){
        full->P();
        mutex->P();
        string item = data.back();
        data.pop_back();
        mutex->V();
        empty->V();
        return item;
    }else{
        return "quit";
    }
    
}