xref: /third_party/lzma/CPP/7zip/UI/Console/ConsoleClose.cpp

// ConsoleClose.cpp

#include "StdAfx.h"

#include "ConsoleClose.h"

#ifndef UNDER_CE

#ifdef _WIN32
#include "../../../Common/MyWindows.h"
#else
#include <stdlib.h>
#include <signal.h>
#endif

namespace NConsoleClose {

unsigned g_BreakCounter = 0;
static const unsigned kBreakAbortThreshold = 2;

#ifdef _WIN32

static BOOL WINAPI HandlerRoutine(DWORD ctrlType)
{
  if (ctrlType == CTRL_LOGOFF_EVENT)
  {
    // printf("\nCTRL_LOGOFF_EVENT\n");
    return TRUE;
  }

  g_BreakCounter++;
  if (g_BreakCounter < kBreakAbortThreshold)
    return TRUE;
  return FALSE;
  /*
  switch (ctrlType)
  {
    case CTRL_C_EVENT:
    case CTRL_BREAK_EVENT:
      if (g_BreakCounter < kBreakAbortThreshold)
      return TRUE;
  }
  return FALSE;
  */
}

CCtrlHandlerSetter::CCtrlHandlerSetter()
{
  if (!SetConsoleCtrlHandler(HandlerRoutine, TRUE))
    throw "SetConsoleCtrlHandler fails";
}

CCtrlHandlerSetter::~CCtrlHandlerSetter()
{
  if (!SetConsoleCtrlHandler(HandlerRoutine, FALSE))
  {
    // warning for throw in destructor.
    // throw "SetConsoleCtrlHandler fails";
  }
}

#else // _WIN32

static void HandlerRoutine(int)
{
  g_BreakCounter++;
  if (g_BreakCounter < kBreakAbortThreshold)
    return;
  exit(EXIT_FAILURE);
}

CCtrlHandlerSetter::CCtrlHandlerSetter()
{
  memo_sig_int = signal(SIGINT, HandlerRoutine); // CTRL-C
  if (memo_sig_int == SIG_ERR)
    throw "SetConsoleCtrlHandler fails (SIGINT)";
  memo_sig_term = signal(SIGTERM, HandlerRoutine); // for kill -15 (before "kill -9")
  if (memo_sig_term == SIG_ERR)
    throw "SetConsoleCtrlHandler fails (SIGTERM)";
}

CCtrlHandlerSetter::~CCtrlHandlerSetter()
{
  signal(SIGINT, memo_sig_int); // CTRL-C
  signal(SIGTERM, memo_sig_term); // kill {pid}
}

#endif // _WIN32

/*
void CheckCtrlBreak()
{
  if (TestBreakSignal())
    throw CCtrlBreakException();
}
*/

}

#endif