Reason · Reason lets you write simple, fast and quality type safe code while leveraging both the JavaScript & OCaml ecosystems.

sig
 type allocation_source = Normal | Marshal | Custom
 type allocation = private {
  n_samples : int;
  size : int;
  source : Gc.Memprof.allocation_source;
  callstack : Stdlib.Printexc.raw_backtrace;
 }
 type ('minor, 'major) tracker = {
  alloc_minor : Gc.Memprof.allocation -> 'minor option;
  alloc_major : Gc.Memprof.allocation -> 'major option;
  promote : 'minor -> 'major option;
  dealloc_minor : 'minor -> unit;
  dealloc_major : 'major -> unit;
 }
 val null_tracker : ('minor, 'major) Gc.Memprof.tracker
 val start :
  sampling_rate:float ->
  ?callstack_size:int -> ('minor, 'major) Gc.Memprof.tracker -> unit
 val stop : unit -> unit
end