isle/LEGO1/mxcriticalsection.cpp

#include "mxcriticalsection.h"

#include <stdio.h>

int g_useMutex = 0;

MxCriticalSection::MxCriticalSection()
{
  HANDLE mutex;

  if (g_useMutex != 0)
  {
    mutex = CreateMutexA(NULL, FALSE, NULL);
    this->m_mutex = mutex;
    return;
  }

  InitializeCriticalSection(&this->m_criticalSection);
  this->m_mutex = NULL;
}

MxCriticalSection::~MxCriticalSection()
{
  if (this->m_mutex != NULL)
  {
    CloseHandle(this->m_mutex);
    return;
  }

  DeleteCriticalSection(&this->m_criticalSection);
}

void MxCriticalSection::SetDoMutex()
{
  g_useMutex = 1;
}

void MxCriticalSection::Enter()
{
  DWORD result;
  FILE *file;

  if (this->m_mutex != NULL)
  {
    result = WaitForSingleObject(this->m_mutex, 5000);
    if (result == WAIT_FAILED)
    {
      file = fopen("C:\\DEADLOCK.TXT", "a");
      if (file != NULL)
      {
        fprintf(file, "mutex timeout occurred!\n");
        fclose(file);
      }

      abort();
    }
  }
  else
  {
    EnterCriticalSection(&this->m_criticalSection);
  }
}

void MxCriticalSection::Leave()
{
  if (this->m_mutex != NULL)
  {
    ReleaseMutex(this->m_mutex);
    return;
  }

  LeaveCriticalSection(&this->m_criticalSection);
}