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KDLogger.m
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KDLogger.m
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//
// KDLogger.c
// koudaixiang
//
// Created by Liu Yachen on 3/22/12.
// Copyright (c) 2012 Suixing Tech. All rights reserved.
//
#import "KDLogger.h"
#import <execinfo.h>
#import <sys/utsname.h>
#import <asl.h>
#import "KDUtilities.h"
#import <sys/event.h>
#import <libkern/OSAtomic.h>
static NSFileHandle *__logFileHandle;
static NSString *__logFilePath;
static NSUncaughtExceptionHandler *__previousExceptionHandler;
static KDLoggerCustomActionBlock __customActionBlock;
static BOOL __loggerEnabled = YES;
void KDLoggerSetEnabled(BOOL enabled) {
__loggerEnabled = enabled;
}
void KDLoggerSetLogFilePath(NSString *path) {
if (__logFileHandle) {
[__logFileHandle closeFile];
__logFileHandle = nil;
}
if (![[NSFileManager defaultManager] fileExistsAtPath:path]) {
[[NSFileManager defaultManager] createFileAtPath:path contents:nil attributes:nil];
}
__logFilePath = [path copy];
__logFileHandle = [NSFileHandle fileHandleForWritingAtPath:path];
[__logFileHandle seekToEndOfFile];
}
void _KDLog(NSString *module, NSString *format, ...) {
if (!__loggerEnabled) return;
static dispatch_once_t pred;
__strong static NSLock *lock = nil;
dispatch_once(&pred, ^{
lock = [[NSLock alloc] init];
});
@autoreleasepool {
va_list ap;
va_start(ap, format);
NSString *message = [[NSString alloc] initWithFormat:format arguments:ap];
va_end(ap);
NSString *symbol = [NSThread isMainThread] ? @"*": @" ";
NSDateComponents *nowComponents = [[NSCalendar currentCalendar] components:NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond fromDate:[NSDate date]];
NSString *line = [[NSString alloc] initWithFormat:@"%02d%02d%02d %@[%@] %@\n",
(int)nowComponents.hour, (int)nowComponents.minute, (int)nowComponents.second,
symbol,
module,
message];
[lock lock];
#if DEBUG
fputs(line.UTF8String, stderr);
static dispatch_once_t pred;
static aslclient aslclient;
dispatch_once(&pred, ^{
aslclient = asl_open(NULL, "com.apple.console", 0);
});
uid_t const readUID = geteuid();
char readUIDString[16];
snprintf(readUIDString, sizeof(readUIDString), "%d", readUID);
aslmsg m = asl_new(ASL_TYPE_MSG);
if (m != NULL) {
if (asl_set(m, ASL_KEY_LEVEL, "5") == 0 &&
asl_set(m, ASL_KEY_MSG, line.UTF8String) == 0 &&
asl_set(m, ASL_KEY_READ_UID, readUIDString) == 0) {
asl_send(aslclient, m);
}
asl_free(m);
}
#endif
if (__logFileHandle) {
NSData *lineData = [line dataUsingEncoding:NSUTF8StringEncoding];
[__logFileHandle writeData:lineData];
[__logFileHandle synchronizeFile];
}
if (__customActionBlock) {
__customActionBlock(line);
}
[lock unlock];
}
}
void KDLoggerExceptionHandler(NSException* exception) {
KDLog(@"KDLogger", @"Uncaught Exception, description:%@, call stack:%@",
exception.description,
[exception callStackSymbols]);
if (__previousExceptionHandler) {
__previousExceptionHandler(exception);
}
}
void KDLoggerInstallUncaughtExceptionHandler(void) {
__previousExceptionHandler = NSGetUncaughtExceptionHandler();
NSSetUncaughtExceptionHandler(&KDLoggerExceptionHandler);
}
void KDLoggerPrintCallStack(void) {
void *callstack[128];
int frames = backtrace(callstack, 128);
char **strs = backtrace_symbols(callstack, frames);
NSMutableArray *backtrace = [NSMutableArray arrayWithCapacity:frames];
for (int i = 0; i < frames; i++)
{
[backtrace addObject:@(strs[i])];
}
free(strs);
KDLog(@"KDLogger", @"Call stack:%@", backtrace);
}
void KDLoggerSetLogCustomActionBlock(KDLoggerCustomActionBlock block) {
__customActionBlock = [block copy];
}
NSString *KDLoggerGetLogFilePath(void) {
return __logFilePath;
}
#if TARGET_OS_IOS
#import <UIKit/UIKit.h>
void KDLoggerPrintEnviroment() {
UIDevice *currentDevice = [UIDevice currentDevice];
struct utsname systemInfo;
uname(&systemInfo);
NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
KDLog(@"KDLogger", @"Enviroment: %@, %@, %@(%@)", @(systemInfo.machine), [currentDevice systemVersion], infoDictionary[@"CFBundleShortVersionString"], infoDictionary[@"CFBundleVersion"]);
}
#endif