iOS异常捕获和处理

2013年4月份整理的代码，仅作记录：

//先宏定义

//发布和未发布状态的日志切换

#ifdef DEBUG

//异常栈开关

#define STACK_KEY YES

//日志重定向开关

#define STDERR_KEY NO

//调试日志

#define DebugLog(format,...) NSLog(@"{%s,%d}" format, __FUNCTION__,__LINE__,##__VA_ARGS__)

//异常栈日志

#define StackLog(format,...) NSLog(@"{%s,%d}" format, __FUNCTION__,__LINE__,##__VA_ARGS__)

//输出日至

#define DLOG(...) NSLog(__VA_ARGS__)

//输出详细日志

#define DLOGEXT(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);

//输出调用

#define DLOGCALL DLOG(@"[%@ %@]", NSStringFromClass([self class]), NSStringFromSelector(_cmd))

//输出方法

#define DLOGMETHODNSLog(@"[%s] %@", class_getName([self class]), NSStringFromSelector(_cmd));

//输出点

#define DLOGPOINT(p)NSLog(@"%f,%f", p.x, p.y);

//输出大小

#define DLOGSIZE(p)NSLog(@"%f,%f", p.width, p.height);

//输出矩形

#define DLOGRECT(p)NSLog(@"%f,%f %f,%f", p.origin.x, p.origin.y, p.size.width, p.size.height);

#else

#define STACK_KEY YES

#define STDERR_KEY YES

#define DebugLog(format,...)

#define StackLog(format,...)

#define DLOG(...)

#define DLOGEXT(...)

#define DLOGCALL

#define DLOGMETHOD

#define DLOGPOINT(p)

#define DLOGSIZE(p)

#define DLOGRECT(p)

#endif

AppDelegate的- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions中加入以下代码：

//设置异常日志文件

if (STDERR_KEY) {

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentDir = [paths objectAtIndex:0];

NSString *decyStr = [NSString stringWithFormat:@"decrypt.log"];

NSString *logPath = [documentDir stringByAppendingPathComponent:decyStr];

freopen([logPath cStringUsingEncoding:NSASCIIStringEncoding], "w+", stderr);

}

//异常栈

if (STACK_KEY) {

//设置处理异常的Handler

NSSetUncaughtExceptionHandler(&UncaughtExceptionHandler);

//signal处理机制

struct sigaction mySigAction;

mySigAction.sa_sigaction = stacktrace;

mySigAction.sa_flags = SA_SIGINFO;

sigemptyset(&mySigAction.sa_mask);

sigaction(SIGQUIT, &mySigAction, NULL);

sigaction(SIGILL , &mySigAction, NULL);

sigaction(SIGTRAP, &mySigAction, NULL);

sigaction(SIGABRT, &mySigAction, NULL);

sigaction(SIGEMT , &mySigAction, NULL);

sigaction(SIGFPE , &mySigAction, NULL);

sigaction(SIGBUS , &mySigAction, NULL);

sigaction(SIGSEGV, &mySigAction, NULL);

sigaction(SIGSYS , &mySigAction, NULL);

sigaction(SIGPIPE, &mySigAction, NULL);

sigaction(SIGALRM, &mySigAction, NULL);

sigaction(SIGXCPU, &mySigAction, NULL);

sigaction(SIGXFSZ, &mySigAction, NULL);

}

并在同个页面中实现以下方法:

//异常处理

#pragma mark - DebugMethods

void UncaughtExceptionHandler(NSException *exception) {

StackLog(@"receive a UncaughtExceptionHandler");

NSArray *arr = [exception callStackSymbols];

NSString *reason = [exception reason];

NSString *name = [exception name];

NSString *syserror = [NSStringstringWithFormat:@"UncaughtExceptionHandlerName:%@\nUncaughtExceptionHandlerReason:%@\nUncaughtExceptionHandlerArray：%@",name, reason, arr];

StackLog(@"%@", syserror);

}

void stacktrace(int sig, siginfo_t *info, void *context)

{

NSMutableString * mstr = [[[NSMutableStringalloc] initWithCapacity:0] autorelease];

[mstr appendString:@"Stack:\n"];

StackLog(@"sig %d",sig);

void* callstack[128];

int i, frameCount = backtrace(callstack, 128);

char** strs = backtrace_symbols(callstack, frameCount);

for (i = 0; i < frameCount; ++i) {

[mstr appendFormat:@"%s\n", strs[i]];

}

StackLog(@"Stack Trace:\r\n%@", mstr);

}

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iOS异常捕获和处理

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