mtrace

mtrace, muntrace - malloc debugging

#include <mcheck.h> void mtrace(void); void muntrace(void);

The function R mtrace () installs handlers for malloc(3), realloc(3) and free(3). The function R muntrace () disables these handlers.
The environment variable MALLOC_TRACE defines a file where R mtrace () writes its output. This file must be writable to the user or R mtrace () will do nothing. If the file is not empty it will be truncated.

These are GNU extensions.

The output of R mtrace () will be ASCII but not in a friendly format. So glibc comes with a perl-script called mtrace to make sense of it.

malloc(3), malloc_hook(3)