0003-Reduce-lifetime-of-lock-in-TFile-TFile-to-avoid-lock.patch

From b5bdb586635f61817bfa14b0eba07ac5014fe602 Mon Sep 17 00:00:00 2001
From: Philippe Canal <pcanal@fnal.gov>
Date: Fri, 18 Oct 2013 06:08:54 -0500
Subject: [PATCH] Reduce lifetime of lock in TFile::~TFile to avoid lock nesting.

No need to hold the gROOTMutex while executing ResetGlobalVar.
---
 io/io/src/TFile.cxx |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/io/io/src/TFile.cxx b/io/io/src/TFile.cxx
index 56295da..866ec71 100644
--- a/io/io/src/TFile.cxx
+++ b/io/io/src/TFile.cxx
@@ -514,9 +514,11 @@ TFile::~TFile()
    SafeDelete(fInfoCache);
    SafeDelete(fOpenPhases);
 
-   R__LOCKGUARD2(gROOTMutex);
-   gROOT->GetListOfClosedObjects()->Remove(this);
-   gROOT->GetUUIDs()->RemoveUUID(GetUniqueID());
+   {
+      R__LOCKGUARD2(gROOTMutex);
+      gROOT->GetListOfClosedObjects()->Remove(this);
+      gROOT->GetUUIDs()->RemoveUUID(GetUniqueID());
+   }
 
    if (IsOnHeap()) {
       // Delete object from CINT symbol table so it can not be used anymore.
-- 
1.7.4.1