android_debugger.cpp

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/* This function will dump stack trace to logcat and continue running on Android OS */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <signal.h>
#include <errno.h>
#include <android/log.h>
#include "android_debugger.h"

/* TODO: it does not work */

static sighandler_t debuggerHandler;

static void mySignalHandler (int sig)
{
    debuggerHandler(sig);
    signal( sig, debuggerHandler );
}

void androidDumpBacktrace (FILE * out)
{
    __android_log_print(ANDROID_LOG_INFO, "UFOAI", "Backtrace on Android does not work currently, you need to actually crash your code to get backtrace");
    /*
    debuggerHandler = signal(SIGSEGV, mySignalHandler);
    __android_log_print(ANDROID_LOG_INFO, "UFOAI", "Backtrace (run command \"arm-eabi-gdb libapplication.so -ex 'list *0xaabbccdd'\" where aabbccdd is a stack address below):");
    if (debuggerHandler == SIG_IGN || debuggerHandler == SIG_DFL || debuggerHandler == SIG_ERR) {
        __android_log_print(ANDROID_LOG_INFO, "UFOAI", "Getting backtrace failed, you have very custom or broken Android firmware");
        signal(SIGSEGV, debuggerHandler);
        return;
    }
    raise(SIGSEGV);
    */
}