From db12deff975c013a0ac02cfb49a339f8e6af5938 Mon Sep 17 00:00:00 2001
From: Luis Rascao <luis.rascao@gmail.com>
Date: Sat, 10 Sep 2016 21:02:47 +0200
Subject: Allow for easier enabling of distribution debug

Also update already deprecated calls.
---
 erts/emulator/beam/dist.c        |  1 +
 lib/kernel/include/dist_util.hrl |  2 +-
 lib/kernel/src/global.erl        | 16 ++++++++++------
 lib/kernel/src/net_kernel.erl    |  4 +---
 4 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c
index 09c83f1117..9bfeaa3379 100644
--- a/erts/emulator/beam/dist.c
+++ b/erts/emulator/beam/dist.c
@@ -25,6 +25,7 @@
 
 /* define this to get a lot of debug output */
 /* #define ERTS_DIST_MSG_DBG */
+/* #define ERTS_RAW_DIST_MSG_DBG */
 
 #ifdef HAVE_CONFIG_H
 #  include "config.h"
diff --git a/lib/kernel/include/dist_util.hrl b/lib/kernel/include/dist_util.hrl
index 320e916c04..e3d2fe0eb6 100644
--- a/lib/kernel/include/dist_util.hrl
+++ b/lib/kernel/include/dist_util.hrl
@@ -29,7 +29,7 @@
 -endif.
 
 -ifdef(dist_trace).
--define(trace(Fmt,Args), io:format("~p ~p:~s",[erlang:now(),node(),lists:flatten(io_lib:format(Fmt, Args))])).
+-define(trace(Fmt,Args), io:format("~p ~p:~s",[erlang:timestamp(),node(),lists:flatten(io_lib:format(Fmt, Args))])).
 % Use the one below for config-file (early boot) connection tracing
 %-define(trace(Fmt,Args), erlang:display([erlang:now(),node(),lists:flatten(io_lib:format(Fmt, Args))])).
 -define(trace_factor,8).
diff --git a/lib/kernel/src/global.erl b/lib/kernel/src/global.erl
index 0c73ead7c5..5e8bc2ba5d 100644
--- a/lib/kernel/src/global.erl
+++ b/lib/kernel/src/global.erl
@@ -58,14 +58,18 @@
 %%% In certain places in the server, calling io:format hangs everything,
 %%% so we'd better use erlang:display/1.
 %%% my_tracer is used in testsuites
--define(trace(_), ok).
 
+%% uncomment this if tracing is wanted
+%%-define(DEBUG, true).
+-ifdef(DEBUG).
+-define(trace(T), erlang:display({format, node(), cs(), T})).
+  cs() ->
+     {_Big, Small, Tiny} = erlang:timestamp(),
+     (Small rem 100) * 100 + (Tiny div 10000).
 %-define(trace(T), (catch my_tracer ! {node(), {line,?LINE}, T})).
-
-%-define(trace(T), erlang:display({format, node(), cs(), T})).
-%cs() ->
-%    {_Big, Small, Tiny} = now(),
-%    (Small rem 100) * 100 + (Tiny div 10000).
+-else.
+-define(trace(_), ok).
+-endif.
 
 %% These are the protocol versions:
 %% Vsn 1 is the original protocol.
diff --git a/lib/kernel/src/net_kernel.erl b/lib/kernel/src/net_kernel.erl
index 0c679e7349..0a9f9316b0 100644
--- a/lib/kernel/src/net_kernel.erl
+++ b/lib/kernel/src/net_kernel.erl
@@ -26,15 +26,13 @@
 
 %%-define(dist_debug, true).
 
-%-define(DBG,erlang:display([?MODULE,?LINE])).
-
 -ifdef(dist_debug).
 -define(debug(Term), erlang:display(Term)).
 -else.
 -define(debug(Term), ok).
 -endif.
 
--ifdef(DEBUG).
+-ifdef(dist_debug).
 -define(connect_failure(Node,Term),
 	io:format("Net Kernel 2: Failed connection to node ~p, reason ~p~n",
 		  [Node,Term])).
-- 
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