From ebac0993e896d18e0809fbb1167edf99b2677ac3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicol=C3=A1s=20Alvarez?= <nicolas.alvarez@gmail.com>
Date: Thu, 23 Dec 2010 17:28:52 -0300
Subject: Fix serious performance regression.

In Repository::commit, don't call startFastImport() if we have nothing to
write to the fastImport stream. startFastImport() may start new
git-fast-import processes if they were previously killed, so it may be
extremely slow to call it frequently if it's not necessary.
---
 src/repository.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/repository.cpp b/src/repository.cpp
index b362bdf..7baf995 100644
--- a/src/repository.cpp
+++ b/src/repository.cpp
@@ -374,6 +374,9 @@ int Repository::resetBranch(const QString &branch, int revnum, int mark, const Q
 
 void Repository::commit()
 {
+    if (deletedBranches.isEmpty() && resetBranches.isEmpty()) {
+        return;
+    }
     startFastImport();
     fastImport.write(deletedBranches);
     fastImport.write(resetBranches);
-- 
cgit v1.2.1