Sub-part of a program

If you run on a really big program doing millions of allocation you might get a big overhead, and maybe you are just interested in a sub-part of the program. You can do it by including malt/malt.h in your files and use malt_enable() an malt_disable() to controle MALT on each thread. It is also a nice way to detect leaks of sub-parts of your code.

#include <malt/malt.h>

int main()
{
    malt_disable();
    //ignored
    malloc(16);

    malt_enable();
    //tracked
    malloc(16);
}

You will need to link the libmalt-controler.so to get the default fake symbols when not using MALT. You can also just provide the two empty functions in your own dynamic library (not static).

If you have some allocation not under your control before your first call you can disable MALT by default on threads using the filter:enabled option, then enable it by hand.

If you want to change the initial status (make it disabled at start), you can simply redefine in your program the function :

#include <stdlib.h>
#include <malt/malt.h>

//malt will be disabled at start
int malt_init_status(void)
{
    return 0;
}

int main()
{
    //perform some costly code

    malt_enable();
    //perform some costly code you want to analyse
    malt_disable();

    //ok
    return EXIT_SUCCESS;
}