Detecting if iOS app is run in debugger

Question

I set up my application to either send debugging output to console or a log file. Now, I\'d like to decide with in the code whether

• it is run in the debugger

Answer 1

I usually go for a much more simple solution; is the binary compiled with optimizations?

A debug build is not optimized, and logs are nice. A release build should have optimizations and not as many logs. You can check for this with the __OPTIMIZE__ symbol.

For logging I use this setup for logg-functions:

#ifdef __OPTIMIZE__ 
  #define CWLog(...)
  #define CWLogDebug(...)
  #define CWLogInfo(...)
#else
  #define CWLog(...) NSLog(__VA_ARGS__)
  #define CWLogDebug( s, ... ) NSLog( @"DEBUG <%p %@:(%d)> %@", self, [[NSString stringWithUTF8String:__FILE__] lastPathComponent], __LINE__, [NSString stringWithFormat:(s), ##__VA_ARGS__] )
  #ifndef LOG_INFO
    #define CWLogInfo(...)
  #else
    #define CWLogInfo( s, ... ) NSLog( @"INFO <%p %@:(%d)> %@", self, [[NSString stringWithUTF8String:__FILE__] lastPathComponent], __LINE__, [NSString stringWithFormat:(s), ##__VA_ARGS__] )
  #endif
#endif
#define CWLogWarning( s, ... ) NSLog( @"WARNING <%p %@:(%d)> %@", self, [[NSString stringWithUTF8String:__FILE__] lastPathComponent], __LINE__, [NSString stringWithFormat:(s), ##__VA_ARGS__] )
#define CWLogError( s, ... ) NSLog( @"ERROR <%p %@:(%d)> %@", self, [[NSString stringWithUTF8String:__FILE__] lastPathComponent], __LINE__, [NSString stringWithFormat:(s), ##__VA_ARGS__] )