From 45a4a46333b1e8e6f66ba923deaf947a67ae7737 Mon Sep 17 00:00:00 2001
From: Simon Cornish <7t9jna402@sneakemail.com>
Date: Mon, 25 Apr 2016 22:21:07 -0700
Subject: Don't kill old erlang if HEART_NO_KILL is set

If the environment variable HEART_NO_KILL is set then
heart won't kill the old erlang process. This is desirable
if the command executed by heart takes care of this.
---
 erts/etc/common/heart.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'erts/etc/common')

diff --git a/erts/etc/common/heart.c b/erts/etc/common/heart.c
index 1a826221fb..b6fbfd075c 100644
--- a/erts/etc/common/heart.c
+++ b/erts/etc/common/heart.c
@@ -119,6 +119,8 @@
 #define HEART_COMMAND_ENV          "HEART_COMMAND"
 #define ERL_CRASH_DUMP_SECONDS_ENV "ERL_CRASH_DUMP_SECONDS"
 #define HEART_KILL_SIGNAL          "HEART_KILL_SIGNAL"
+#define HEART_NO_KILL              "HEART_NO_KILL"
+
 
 #define MSG_HDR_SIZE         (2)
 #define MSG_HDR_PLUS_OP_SIZE (3)
@@ -524,6 +526,10 @@ static void
 kill_old_erlang(void){
     HANDLE erlh;
     DWORD exit_code;
+
+    if (is_env_set(HEART_NO_KILL))
+      return;
+
     if(heart_beat_kill_pid != 0){
 	if((erlh = OpenProcess(PROCESS_TERMINATE | 
 			       SYNCHRONIZE | 
@@ -557,6 +563,9 @@ kill_old_erlang(void){
     int sig = SIGKILL;
     char *sigenv = NULL;
 
+    if (is_env_set(HEART_NO_KILL))
+      return;
+
     sigenv = get_env(HEART_KILL_SIGNAL);
     if (sigenv && strcmp(sigenv, "SIGABRT") == 0) {
         print_error("kill signal SIGABRT requested");
-- 
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