From b750ef94a7f00756fd4fa2afe9a532caa4cf76e0 Mon Sep 17 00:00:00 2001
From: bitsofproof <tamas@bitsofproof.com>
Date: Tue, 13 Nov 2012 08:18:40 +0100
Subject: [PATCH] lower granularity of locks in signature cache

---
 src/com/bitsofproof/supernode/core/Script.java | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/com/bitsofproof/supernode/core/Script.java b/src/com/bitsofproof/supernode/core/Script.java
index fbc901f8..5e662dce 100644
--- a/src/com/bitsofproof/supernode/core/Script.java
+++ b/src/com/bitsofproof/supernode/core/Script.java
@@ -1568,7 +1568,19 @@ else if ( (hashType & 0x1f) == SIGHASH_SINGLE )
 		String cacheKey = c.toString ();
 		synchronized ( validSignatureCache )
 		{
-			return validSignatureCache.contains (cacheKey) || ECKeyPair.verify (hash, sig, pubkey) && validSignatureCache.add (cacheKey);
+			if ( validSignatureCache.contains (cacheKey) )
+			{
+				return true;
+			}
+		}
+		if ( ECKeyPair.verify (hash, sig, pubkey) )
+		{
+			synchronized ( validSignatureCache )
+			{
+				validSignatureCache.add (cacheKey);
+			}
+			return true;
 		}
+		return false;
 	}
 }