#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#define EAT_MAX 1000
#define PHILLOSOFERS 5
#define STICKS 5
#define MIN_STICKS_TO_EAT 2
int availableSticks[STICKS] ;

//CRITICAL_SECTION canPickUp;
CRITICAL_SECTION sticks[STICKS];

int pickup(int i);
void putDown(int i);

DWORD WINAPI phillosofer(LPVOID LPARAM);

int main()
{
    HANDLE WINAPI handleArr[PHILLOSOFERS];
    int id[PHILLOSOFERS];
    //InitializeCriticalSection(&canPickUp);
    for (int i = 0; i < STICKS; i++)
    {
        availableSticks[i] = 1;
        InitializeCriticalSection(&sticks[i]);

    }
    for (int i = 0; i < PHILLOSOFERS; i++)
    {
        id[i] = i;
        handleArr[i] = CreateThread(NULL, 0, phillosofer, &id[i], 0, NULL);
    }
    for (int i = 0; i < PHILLOSOFERS; i++)
    {
        WaitForSingleObject(handleArr[i], INFINITE);
    }
    system("pause");
    return 0;
}

DWORD WINAPI phillosofer(LPVOID lparam)
{
    int count = 0;
    int cur = *(int*)lparam;
    printf("%d STARTED\n", *(int*)lparam);
    while (count <= EAT_MAX)
    {

            if (pickup(*(int*)lparam))
            {
                count++;
                printf("%d",*(int*)lparam);
                putDown(*(int*)lparam);
            }


    }
    printf("%d DONE\n", *(int*)lparam);
    return NULL;
}

int pickup(int i)
{
    if (TryEnterCriticalSection(&sticks[i]) && TryEnterCriticalSection(&sticks[(i + 1) % STICKS]))
    {
        return 1;
        //both avaiable
    }
    else
    {
        //if only one is avaiable dont take any
            LeaveCriticalSection(&sticks[(i + 1) % STICKS]);
            LeaveCriticalSection(&sticks[i]);
    }



    return 0;
}
void putDown(int i)
{
    LeaveCriticalSection(&sticks[i]);
    LeaveCriticalSection(&sticks[(i + 1) % STICKS]);

}