/*
 *  DebugSymbols.cpp
 *  Rocket_Man
 *
 *  Created by John Ryland on 24/06/09.
 *  Copyright 2009 InvertedLogic. All rights reserved.
 *
 */

#include <dlfcn.h>
#include "DebugSymbols.h"
#include <execinfo.h>


#if 0

int
backtrace(void** array, int size);

char**
backtrace_symbols(void* const* array, int size);


int
dladdr(const void* addr, Dl_info* info);

DESCRIPTION
The dladdr() function queries dyld (the dynamic linker) for information about the image con-
taining the address addr.  The information is returned in the structure specified by info.
The structure contains at least the following members:

const char* dli_fname     The pathname of the shared object containing the address.

void* dli_fbase           The base address (mach_header) at which the image is mapped into
the address space of the calling process.

const char* dli_sname     The name of the nearest run-time symbol with a value less than or
equal to addr.

void* dli_saddr           The value of the symbol returned in dli_sname.






#include <execinfo.h>
#include <stdio.h>
...
void* callstack[128];
int i, frames = backtrace(callstack, 128);
char** strs = backtrace_symbols(callstack, frames);
for (i = 0; i < frames; ++i) {
	printf("%s\n", strs[i]);
}
free(strs);


#include <execinfo.h>
#include <stdio.h>
#include <stdlib.h>

/* Obtain a backtrace and print it to stdout. */
void
print_trace (void)
{
	void *array[10];
	size_t size;
	char **strings;
	size_t i;
	
	size = backtrace (array, 10);
	strings = backtrace_symbols (array, size);
	
	printf ("Obtained %zd stack frames.\n", size);
	
	for (i = 0; i < size; i++)
		printf ("%s\n", strings[i]);
	
	free (strings);
}

/* A dummy function to make the backtrace more interesting. */
void
dummy_function (void)
{
	print_trace ();
}

int
main (void)
{
	dummy_function ();
	return 0;
}


#endif