From ab1f56072a796b0ff039d6690c6ac929dbcbf243 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Wed, 7 Oct 2015 23:34:55 +0200
Subject: Support -checkmempool=N, which runs checks on average once every N
 transactions

---
 src/init.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/init.cpp')

diff --git a/src/init.cpp b/src/init.cpp
index 75c76e325..d899a1cf9 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -836,7 +836,10 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         InitWarning(_("Warning: Unsupported argument -benchmark ignored, use -debug=bench."));
 
     // Checkmempool and checkblockindex default to true in regtest mode
-    mempool.setSanityCheck(GetBoolArg("-checkmempool", chainparams.DefaultConsistencyChecks()));
+    int ratio = std::min<int>(std::max<int>(GetArg("-checkmempool", chainparams.DefaultConsistencyChecks() ? 1 : 0), 0), 1000000);
+    if (ratio != 0) {
+        mempool.setSanityCheck(1.0 / ratio);
+    }
     fCheckBlockIndex = GetBoolArg("-checkblockindex", chainparams.DefaultConsistencyChecks());
     fCheckpointsEnabled = GetBoolArg("-checkpoints", true);
 
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