From 883b67a84b22ae174e56f237be51e9034648bbd2 Mon Sep 17 00:00:00 2001
From: Enrico Guiraud <enrico.guiraud@cern.ch>
Date: Tue, 26 Mar 2019 19:58:32 +0100
Subject: [PATCH] [TTree] Avoid getting the number of branches twice
The operation is relatively costly as TObjArray::GetEntries also
creates a TReadLockGuard.
---
tree/tree/src/TTree.cxx | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/tree/tree/src/TTree.cxx b/tree/tree/src/TTree.cxx
index 77a2fee964e..ec202a7ecdb 100644
--- a/tree/tree/src/TTree.cxx
+++ b/tree/tree/src/TTree.cxx
@@ -5429,8 +5429,7 @@ Int_t TTree::GetEntry(Long64_t entry, Int_t getall)
};
#ifdef R__USE_IMT
- const auto nBranches = GetListOfBranches()->GetEntries();
- if (nBranches > 1 && ROOT::IsImplicitMTEnabled() && fIMTEnabled && !TTreeCacheUnzip::IsParallelUnzip()) {
+ if (nbranches > 1 && ROOT::IsImplicitMTEnabled() && fIMTEnabled && !TTreeCacheUnzip::IsParallelUnzip()) {
if (fSortedBranches.empty())
InitializeBranchLists(true);
--
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