bench: Benchmark MempoolToJSON

Author: MarcoFalke

build_msvc/bench_bitcoin/bench_bitcoin.vcxproj

@@ -32,6 +32,7 @@
     <ClCompile Include="..\..\src\bench\examples.cpp" />
     <ClCompile Include="..\..\src\bench\lockedpool.cpp" />
     <ClCompile Include="..\..\src\bench\mempool_eviction.cpp" />
+    <ClCompile Include="..\..\src\bench\rpc_mempool.cpp" />
     <ClCompile Include="..\..\src\bench\merkle_root.cpp" />
     <ClCompile Include="..\..\src\bench\rollingbloom.cpp" />
     <ClCompile Include="..\..\src\bench\verify_script.cpp" />

src/Makefile.bench.include

@@ -26,6 +26,7 @@ bench_bench_bitcoin_SOURCES = \
   bench/gcs_filter.cpp \
   bench/merkle_root.cpp \
   bench/mempool_eviction.cpp \
+  bench/rpc_mempool.cpp \
   bench/verify_script.cpp \
   bench/base58.cpp \
   bench/bech32.cpp \
@@ -37,6 +38,7 @@ nodist_bench_bench_bitcoin_SOURCES = $(GENERATED_BENCH_FILES)
 bench_bench_bitcoin_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) $(EVENT_CLFAGS) $(EVENT_PTHREADS_CFLAGS) -I$(builddir)/bench/
 bench_bench_bitcoin_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 bench_bench_bitcoin_LDADD = \
+  $(LIBBITCOIN_SERVER) \
   $(LIBBITCOIN_WALLET) \
   $(LIBBITCOIN_SERVER) \
   $(LIBBITCOIN_COMMON) \
@@ -47,7 +49,9 @@ bench_bench_bitcoin_LDADD = \
   $(LIBLEVELDB_SSE42) \
   $(LIBMEMENV) \
   $(LIBSECP256K1) \
-  $(LIBUNIVALUE)
+  $(LIBUNIVALUE) \
+  $(EVENT_PTHREADS_LIBS) \
+  $(EVENT_LIBS)
 
 if ENABLE_ZMQ
 bench_bench_bitcoin_LDADD += $(LIBBITCOIN_ZMQ) $(ZMQ_LIBS)

src/bench/rpc_mempool.cpp

@@ -0,0 +1,43 @@
+// Copyright (c) 2011-2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <bench/bench.h>
+#include <policy/policy.h>
+#include <rpc/blockchain.h>
+#include <txmempool.h>
+
+#include <univalue.h>
+
+#include <list>
+#include <vector>
+
+static void AddTx(const CTransactionRef& tx, const CAmount& fee, CTxMemPool& pool) EXCLUSIVE_LOCKS_REQUIRED(cs_main, pool.cs)
+{
+    LockPoints lp;
+    pool.addUnchecked(CTxMemPoolEntry(tx, fee, /* time */ 0, /* height */ 1, /* spendsCoinbase */ false, /* sigOpCost */ 4, lp));
+}
+
+static void RpcMempool(benchmark::State& state)
+{
+    CTxMemPool pool;
+    LOCK2(cs_main, pool.cs);
+
+    for (int i = 0; i < 1000; ++i) {
+        CMutableTransaction tx = CMutableTransaction();
+        tx.vin.resize(1);
+        tx.vin[0].scriptSig = CScript() << OP_1;
+        tx.vin[0].scriptWitness.stack.push_back({1});
+        tx.vout.resize(1);
+        tx.vout[0].scriptPubKey = CScript() << OP_1 << OP_EQUAL;
+        tx.vout[0].nValue = i;
+        const CTransactionRef tx_r{MakeTransactionRef(tx)};
+        AddTx(tx_r, /* fee */ i, pool);
+    }
+
+    while (state.KeepRunning()) {
+        (void)MempoolToJSON(pool, /*verbose*/ true);
+    }
+}
+
+BENCHMARK(RpcMempool, 40);