prefix.pch (includes logging macro) for iOS project

prefix.pch

#import <Availability.h>

#ifndef __IPHONE_3_0
#warning "This project uses features only available in iPhone SDK 3.0 and later."
#endif

#ifdef __OBJC__
  #import <Foundation/Foundation.h>
  #import <UIKit/UIKit.h>
  #import <CoreData/CoreData.h>
#endif

#if TARGET_IPHONE_SIMULATOR
  #import <objc/objc-runtime.h>
#else
  #import <objc/runtime.h>
#endif


//Logging macro
#ifdef DEBUG
  #define LOG(fmt, ...) NSLog((@"%s(%d) " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
  #define LOG(fmt, ...) ;
#endif

//Logging ClassName
#define LOG_CLASSNAME(object) LOG(@"%s", class_getName([object class]));

//Logging Frame
#define LOG_FRAME(frame) LOG(@"x=%1.0f, y=%1.0f, w=%1.0f, h=%1.0f", frame.origin.x, frame.origin.y, frame.size.width, frame.size.height);

//Performance measurement
#define MEASURE_BEGIN struct timeval start, stop; gettimeofday(&start, NULL);
#define MEASURE_STAMP gettimeofday(&stop, NULL); LOG(@"time: %f[usec]\n", ((stop.tv_sec*1000000+stop.tv_usec) - (start.tv_sec*1000000+start.tv_usec))/1000000.0f);