in ext/liballocations/liballocations.c [170:192]
void Init_liballocations() {
VALUE mAllocations = rb_define_module_under(rb_cObject, "Allocations");
allocation_tracer = rb_tracepoint_new(Qnil, RUBY_INTERNAL_EVENT_NEWOBJ,
newobj_callback, NULL);
free_tracer = rb_tracepoint_new(Qnil, RUBY_INTERNAL_EVENT_FREEOBJ,
freeobj_callback, NULL);
id_enabled = rb_intern("enabled");
rb_define_singleton_method(mAllocations, "to_hash", allocations_to_hash, 0);
rb_define_singleton_method(mAllocations, "start", allocations_start, 0);
rb_define_singleton_method(mAllocations, "stop", allocations_stop, 0);
rb_define_singleton_method(mAllocations, "enabled?", allocations_enabled_p, 0);
rb_define_const(mAllocations, "ALLOCATION_TRACER", allocation_tracer);
rb_define_const(mAllocations, "FREE_TRACER", free_tracer);
Init_allocations_state();
state_const = rb_const_get(mAllocations, rb_intern("STATE"));
}