////////////////////////////////////////////////////////////////////////////
// PROCESS.CC
//
//-The process class contains all the object need to run a single process
// in its own address space.  
//
// The process class contain:
// -AddressSpace
// -Count of threads still alive.
// -OpenFile Table
// -Join Information
// -Page Table Location kept in the address space
///////////////////////////////////////////////////////////////////////////
#include "process.h"
#include "system.h"

Lock* processLock = new Lock("processLock");
Process::processID = 0;

Process::Process(OpenFile *executable, bool joinable=false)
{
  numProcess++;
  processLock->Acquire();
  threadCount = 1;
  addrSpace = new AddrSpace(executable);
  PID=processID;
  processID++;
  processLock->Release();
  for(int i=0; i<10;i++)
    openFileTable[i]=NULL;
}

Process::~Process()
{
  numProcess--;
  if(numProcess==0)
    interrupt->Halt();

}

int Process::getThreadCount()
{
  
  return threadCount;
}

int Process::getPID()
{
  return PID;
}

void Process::incrementThreadCount()
{
  threadCount = threadCount+1;
}


void Process::decrementThreadCount()
{
  threadCount = threadCount - 1;
}

AddrSpace* Process::getSpace()
{
  return addrSpace;
}