From 4dec507546040896338d8bbdb2075c7ad3a4b9f3 Mon Sep 17 00:00:00 2001
From: Qi Wang <interwq@gwu.edu>
Date: Wed, 5 Apr 2017 22:04:12 -0700
Subject: [PATCH] Bypass witness_fork in TSD when !config_debug.

With the tcache change, we plan to leave some blank space when !config_debug
(unused tbins, witnesses) at the end of the tsd. Let's not touch the memory.
---
 src/witness.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/witness.c b/src/witness.c
index 034ea92b..cbffaeaa 100644
--- a/src/witness.c
+++ b/src/witness.c
@@ -96,16 +96,25 @@ witnesses_cleanup(tsd_t *tsd) {
 
 void
 witness_prefork(tsd_t *tsd) {
+	if (!config_debug) {
+		return;
+	}
 	tsd_witness_fork_set(tsd, true);
 }
 
 void
 witness_postfork_parent(tsd_t *tsd) {
+	if (!config_debug) {
+		return;
+	}
 	tsd_witness_fork_set(tsd, false);
 }
 
 void
 witness_postfork_child(tsd_t *tsd) {
+	if (!config_debug) {
+		return;
+	}
 #ifndef JEMALLOC_MUTEX_INIT_CB
 	witness_list_t *witnesses;