From 682730fbe4aaae524c5725b933fbb7dd56932b2b Mon Sep 17 00:00:00 2001
From: Laurens Voerman <l.voerman@rug.nl>
Date: Tue, 22 Aug 2017 15:23:47 +0200
Subject: [PATCH] reduce the need to reallocate the std::ostream buffer behind
 osg::Notify (causing multitreading issues) by pre-allocating 4095 bytes.

---
 src/osg/Notify.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/osg/Notify.cpp b/src/osg/Notify.cpp
index 02d1f8527..e562aea4d 100644
--- a/src/osg/Notify.cpp
+++ b/src/osg/Notify.cpp
@@ -61,6 +61,9 @@ struct NotifyStreamBuffer : public std::stringbuf
 {
     NotifyStreamBuffer() : _severity(osg::NOTICE)
     {
+        /* reduce the need to reallocate the std::ostream buffer behind osg::Notify (causing multitreading issues) by pre-allocating 4095 bytes */
+        str(std::string(4095, 0));
+        pubseekpos(0, std::ios_base::out);
     }
 
     void setNotifyHandler(osg::NotifyHandler *handler) { _handler = handler; }