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