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/*!A cross-platform build utility based on Lua
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright (C) 2015-present, Xmake Open Source Community.
*
* @author ruki
* @file signal.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "signal"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
#if defined(TB_CONFIG_OS_MACOSX) || defined(TB_CONFIG_OS_IOS)
#include <unistd.h>
#include <signal.h>
#elif defined(TB_CONFIG_OS_LINUX) || defined(TB_CONFIG_OS_BSD) || defined(TB_CONFIG_OS_ANDROID) || \
defined(TB_CONFIG_OS_HAIKU)
#include <unistd.h>
#include <signal.h>
#endif
#ifdef TB_CONFIG_OS_BSD
#include <sys/types.h>
#include <sys/sysctl.h>
#include <signal.h>
#endif
/* //////////////////////////////////////////////////////////////////////////////////////
* types
*/
typedef enum __xm_os_signal_e {
XM_OS_SIGINT = 2
} xm_os_signal_e;
typedef enum __xm_os_signal_handler_e {
XM_OS_SIGFUN = 0,
XM_OS_SIGDFL = 1,
XM_OS_SIGIGN = 2,
} xm_os_signal_handler_e;
/* //////////////////////////////////////////////////////////////////////////////////////
* globals
*/
static lua_State *g_lua = tb_null;
/* //////////////////////////////////////////////////////////////////////////////////////
* private implementation
*/
static tb_void_t xm_os_signal_handler_impl(tb_int_t signo) {
// do callback(signo)
lua_State *lua = g_lua;
if (lua) {
tb_char_t name[64] = { 0 };
tb_snprintf(name, sizeof(name), "_SIGNAL_HANDLER_%d", signo);
lua_getglobal(lua, name);
lua_pushinteger(lua, signo);
lua_call(lua, 1, 0);
}
}
#if defined(TB_CONFIG_OS_WINDOWS)
static BOOL WINAPI xm_os_signal_handler(DWORD ctrl_type) {
if (ctrl_type == CTRL_C_EVENT) {
xm_os_signal_handler_impl(XM_OS_SIGINT);
}
return TRUE;
}
#elif defined(SIGINT)
static tb_void_t xm_os_signal_handler(tb_int_t signo_native) {
tb_int_t signo = -1;
switch (signo_native) {
case SIGINT:
signo = XM_OS_SIGINT;
break;
default:
break;
}
if (signo >= 0) {
xm_os_signal_handler_impl(signo);
}
}
#endif
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
tb_int_t xm_os_signal(lua_State *lua) {
tb_assert_and_check_return_val(lua, 0);
g_lua = lua;
tb_int_t handler = XM_OS_SIGFUN;
// check signal handler
if (lua_isnumber(lua, 2)) {
handler = (tb_int_t)luaL_checkinteger(lua, 2);
} else if (!lua_isfunction(lua, 2)) {
return 0;
}
// save signal handler
tb_int_t signo = (tb_int_t)luaL_checkinteger(lua, 1);
if (handler == XM_OS_SIGFUN) {
tb_char_t name[64] = { 0 };
tb_snprintf(name, sizeof(name), "_SIGNAL_HANDLER_%d", signo);
lua_pushvalue(lua, 2);
lua_setglobal(lua, name);
}
#if defined(TB_CONFIG_OS_WINDOWS)
if (signo != XM_OS_SIGINT) {
return 0;
}
switch (handler) {
case XM_OS_SIGFUN:
SetConsoleCtrlHandler(xm_os_signal_handler, TRUE);
break;
case XM_OS_SIGDFL:
SetConsoleCtrlHandler(NULL, FALSE);
break;
case XM_OS_SIGIGN:
SetConsoleCtrlHandler(NULL, TRUE);
break;
default:
break;
}
#elif defined(SIGINT)
switch (signo) {
case XM_OS_SIGINT:
signo = SIGINT;
break;
default:
return 0;
}
switch (handler) {
case XM_OS_SIGFUN:
signal(signo, xm_os_signal_handler);
break;
case XM_OS_SIGDFL:
signal(signo, SIG_DFL);
break;
case XM_OS_SIGIGN:
signal(signo, SIG_IGN);
break;
default:
break;
}
#endif
return 0;
}
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