How to find out who is the calling method or function?

Question

I want to write a function or debugging method that will help print useful information. When it is called, I need:

• memory address of the calling object (if called by the object)
• caller method signature (or method name) or function name
• name of the class to which this method or function belongs

Is it possible to get this information without passing a number of parameters?

I want to do something like:

debug();

which then goes into each method and function and helps print out useful information about what is happening.

Answer 1

gdb , . , , , ,

__PRETTY_FUNCTION__ / Objective-C. self , .

#define, , , :

#define METHOD() printf("%s\t0x%x\n", __PRETTY_FUNCTION__, (unsigned int)self)

, :

METHOD();

:

-[MyClass initWithFoo:bar:] 0x12345678

, , , , gdb, , .

Answer 2

• , .
• ( , ), Xcode Debugger, , backtrace n, n .

Answer 3

Karl Kraft DebugLog

Answer 4

, , - .

NSThread , unsymbolicated backtrace, callStackReturnAddresses. 10.6 , callStackSymbols.

, . , - , , ARM. ( -) ARM, , , - ARM ABI ( ). ARM. i386, ppc.

Answer 5

You can use the backtrace (3) API to find out which method or function you called. Getting the caller, if any, is much, much more complicated.