Merge pull request #1278 from petermm/ex_process_send

Process.ex send/2 send_after/3 and /4 cancel_timer/1

send_after is stubbed for /4 and abs option is ignored. Believe those are
related to time warping.
See https://hexdocs.pm/elixir/1.17.3/Process.html#send_after/4

These changes are made under both the "Apache 2.0" and the "GNU Lesser General
Public License 2.1 or later" license terms (dual license).

SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later

Author: bettio

CHANGELOG.md

@@ -20,6 +20,7 @@ also non string parameters (e.g. `Enum.join([1, 2], ",")`
 `Enum.filter`, `Enum.flat_map`, `Enum.reject`, `Enum.chunk_by` and `Enum.chunk_while`
 - Support for `maps:merge_with/3`
 - Support for `lists:last/1` and `lists:mapfoldl/3`
+- Add support to Elixir for `Process.send/2` `Process.send_after/3/4` and `Process.cancel_timer/1`
 
 ### Changed
 

libs/exavmlib/lib/Process.ex

@@ -146,6 +146,20 @@ defmodule Process do
     receive after: (timeout -> :ok)
   end
 
+  @spec send(dest, msg) :: :ok | :noconnect | :nosuspend
+        when dest: dest(),
+             msg: any
+  defdelegate send(dest, msg), to: :erlang
+
+  @spec send_after(pid | atom, term, non_neg_integer, [option]) :: reference
+        when option: {:abs, boolean}
+  def send_after(dest, msg, time, _opts \\ []) do
+    :erlang.send_after(time, dest, msg)
+  end
+
+  @spec cancel_timer(reference) :: non_neg_integer | false | :ok
+  defdelegate cancel_timer(timer_ref), to: :erlang
+
   @type spawn_opt ::
           :link
           | :monitor