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/* MSPDebug - debugging tool for MSP430 MCUs
* Copyright (C) 2009-2012 Daniel Beer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <unistd.h>
#include "ctrlc.h"
#ifdef __Windows__
#include <windows.h>
static int ctrlc_flag;
static HANDLE ctrlc_event;
static CRITICAL_SECTION ctrlc_cs;
static WINAPI BOOL ctrlc_handler(DWORD event)
{
if ((event == CTRL_C_EVENT) || (event == CTRL_BREAK_EVENT)) {
ctrlc_raise();
return TRUE;
}
return FALSE;
}
void ctrlc_init(void)
{
ctrlc_event = CreateEvent(0, TRUE, FALSE, NULL);
InitializeCriticalSection(&ctrlc_cs);
SetConsoleCtrlHandler(ctrlc_handler, TRUE);
}
void ctrlc_exit(void)
{
SetConsoleCtrlHandler(NULL, TRUE);
DeleteCriticalSection(&ctrlc_cs);
CloseHandle(ctrlc_event);
}
int ctrlc_check(void)
{
int cc;
EnterCriticalSection(&ctrlc_cs);
cc = ctrlc_flag;
LeaveCriticalSection(&ctrlc_cs);
return cc;
}
void ctrlc_clear(void)
{
EnterCriticalSection(&ctrlc_cs);
ctrlc_flag = 0;
ResetEvent(ctrlc_event);
LeaveCriticalSection(&ctrlc_cs);
}
void ctrlc_raise(void)
{
EnterCriticalSection(&ctrlc_cs);
ctrlc_flag = 1;
SetEvent(ctrlc_event);
LeaveCriticalSection(&ctrlc_cs);
}
HANDLE ctrlc_win32_event(void)
{
return ctrlc_event;
}
#else /* __Windows__ */
#include <pthread.h>
#include <signal.h>
static volatile sig_atomic_t ctrlc_flag;
static pthread_t ctrlc_thread;
static void sigint_handler(int signum)
{
(void)signum;
ctrlc_flag = 1;
}
void ctrlc_init(void)
{
#ifndef __CYGWIN__
static const struct sigaction siga = {
.sa_handler = sigint_handler,
.sa_flags = 0
};
#endif
ctrlc_thread = pthread_self();
#ifdef __CYGWIN__
signal(SIGINT, sigint_handler);
#else
sigaction(SIGINT, &siga, NULL);
#endif
}
void ctrlc_exit(void)
{
signal(SIGINT, SIG_DFL);
}
void ctrlc_clear(void)
{
ctrlc_flag = 0;
}
void ctrlc_raise(void)
{
pthread_kill(ctrlc_thread, SIGINT);
}
int ctrlc_check(void)
{
#ifdef __CYGWIN__
/* Cygwin's signal emulation seems to require the process to
* block.
*/
usleep(1);
#endif
return ctrlc_flag;
}
#endif
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