发布的app不免会出现一些奇葩的bug，为了可以实时跟踪app的崩溃，须要接管系统的异常捕获接口，本身来收集保存崩溃现场信息。html
下面简单说一下几个平台的异常崩溃捕获。编程
1.iOS
1.1 Exception
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-(BOOL)install{
if(NSGetUncaughtExceptionHandler() != custom_exceptionHandler)
oldhandler = NSGetUncaughtExceptionHandler();
if(self->_handlerEnable){
NSSetUncaughtExceptionHandler(&custom_exceptionHandler);
}else{
DDLogWarning(@"NSEXception handler disable");
}
return YES;
}
-(BOOL)uninstall{
NSSetUncaughtExceptionHandler(oldhandler);
return YES;
}架构 |
1.2 Signal
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-(BOOL)install{
if(installed){
DDLogError(@"signal handler has been installed");
return NO;
}
custom_crash_stk.ss_size = MAX(MINSIGSTKSZ, 64*1024);
custom_crash_stk.ss_sp = malloc(custom_crash_stk.ss_size);
custom_crash_stk.ss_flags = 0;
if(custom_crash_stk.ss_sp == NULL){
return NO;
}
//替换信号处理函数栈,避免栈已经耗尽，致使进程退出
if(sigaltstack(&custom_crash_stk, 0) < 0)
return NO;
if(!sa_preHandlers){
sa_preHandlers = (struct sigaction*)malloc(sizeof(struct sigaction) * monitored_signals_count);
memset(sa_preHandlers, 0, sizeof(struct sigaction) * monitored_signals_count);
}
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
sigemptyset(&sa.sa_mask);
sa.sa_sigaction = &custom_signalHandler;
for (int i = 0; i < monitored_signals_count; i++) {
if(sigaction(monitored_signals[i], &sa, (struct sigaction*)(sa_preHandlers+i)) != 0){
DDLogError(@"install signalHandler failed, uninstall it!");
[self uninstall];
return NO;
}
}
installed = 1;
return YES;
}
-(BOOL)uninstall{
if(installed){
if(custom_crash_stk.ss_sp){
free(custom_crash_stk.ss_sp);
custom_crash_stk.ss_sp = nil;
}
for (int i = 0; i < monitored_signals_count; i++) {
if(sigaction(monitored_signals[i], (struct sigaction*)(sa_preHandlers+i), 0) != 0){
return NO;
}
}
if(sa_preHandlers)
free(sa_preHandlers);
installed = 0;
return YES;
}else{
DDLogError(@"signalHandler already uninstalled!");
return NO;
}
}app |
2.Cocos
2.1 Cocos-Lua
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local function handleLuaException(msg)
if msg==nil then return end
local targetPlatform = cc.Application:getInstance():getTargetPlatform()
local supportObjectCBridge = false
if (cc.PLATFORM_OS_IPHONE == targetPlatform) or (cc.PLATFORM_OS_IPAD == targetPlatform) or (cc.PLATFORM_OS_MAC == targetPlatform) then
supportObjectCBridge = true
end
local supportJavaBridge = false
if (cc.PLATFORM_OS_ANDROID == targetPlatform) then
supportJavaBridge = true
end
if (supportJavaBridge == true) then
//...
elseif (supportObjectCBridge == true) then
//...
end
end
function __G__TRACKBACK__(msg)
handleLuaException(msg)
return msg
end函数 |
2.2 Cocos-JS
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//注册异常处理回调函数
void JSExceptionHandler::registerJSExceptionHandler(JSContext *cx) {
JS_SetErrorReporter(cx, JSExceptionHandler::reportError);
}
void JSExceptionHandler::reportError(JSContext *cx, const char *message, JSErrorReport*report)
{
const char* format = "%s:%u:%s\n";
const char* fileName = report->filename ? report->filename : "no filename";
int bufLen = strlen(format) + strlen(fileName) + strlen(message) + 16;
char* traceback = (char*)malloc(bufLen);
memset(traceback, 0, bufLen);
sprintf(traceback, format, fileName, (unsigned int) report->lineno, message);
//....
free(traceback);
};网站 |
3.U3D
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//注册未处理异常回调
System.AppDomain.CurrentDomain.UnhandledException += _OnUnhandledExceptionHandler;
//注册日志回调
Application.RegisterLogCallback(_OnLogCallbackHandler);
static private void _OnLogCallbackHandler(string name, string stack, LogType type)
{
//…
}
private static void _OnUnhandledExceptionHandler(object sender, System.UnhandledExceptionEventArgsargs)
{
if (args.ExceptionObject.GetType() == typeof(System.Exception))
{
//…
}
}google |
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