fuzz: add util/mempool/h.cpp

Moving the mempool code (Boost) out of util.h, results in a ~10% speedup
(for me) when compiling the fuzz tests.

src/Makefile.test_fuzz.include

@@ -10,12 +10,13 @@ EXTRA_LIBRARIES += \
 TEST_FUZZ_H = \
     test/fuzz/fuzz.h \
     test/fuzz/FuzzedDataProvider.h \
-    test/fuzz/mempool_utils.h \
+    test/fuzz/util.h \
-    test/fuzz/util.h
+    test/fuzz/util/mempool.h
 
 libtest_fuzz_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) $(BOOST_CPPFLAGS)
 libtest_fuzz_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 libtest_fuzz_a_SOURCES = \
   test/fuzz/fuzz.cpp \
   test/fuzz/util.cpp \
+  test/fuzz/util/mempool.cpp \
   $(TEST_FUZZ_H)

src/test/fuzz/integer.cpp

@@ -12,6 +12,7 @@
 #include <key_io.h>
 #include <memusage.h>
 #include <netbase.h>
+#include <policy/policy.h>
 #include <policy/settings.h>
 #include <pow.h>
 #include <protocol.h>

src/test/fuzz/policy_estimator.cpp

@@ -8,6 +8,7 @@
 #include <test/fuzz/FuzzedDataProvider.h>
 #include <test/fuzz/fuzz.h>
 #include <test/fuzz/util.h>
+#include <test/fuzz/util/mempool.h>
 #include <test/util/setup_common.h>
 #include <txmempool.h>
 

src/test/fuzz/rbf.cpp

@@ -9,6 +9,7 @@
 #include <test/fuzz/FuzzedDataProvider.h>
 #include <test/fuzz/fuzz.h>
 #include <test/fuzz/util.h>
+#include <test/fuzz/util/mempool.h>
 #include <test/util/setup_common.h>
 #include <txmempool.h>
 

src/test/fuzz/tx_pool.cpp

@@ -8,8 +8,8 @@
 #include <node/miner.h>
 #include <test/fuzz/FuzzedDataProvider.h>
 #include <test/fuzz/fuzz.h>
-#include <test/fuzz/mempool_utils.h>
 #include <test/fuzz/util.h>
+#include <test/fuzz/util/mempool.h>
 #include <test/util/mining.h>
 #include <test/util/script.h>
 #include <test/util/setup_common.h>

src/test/fuzz/util.cpp

@@ -478,21 +478,6 @@ CTxDestination ConsumeTxDestination(FuzzedDataProvider& fuzzed_data_provider) no
     return tx_destination;
 }
 
-CTxMemPoolEntry ConsumeTxMemPoolEntry(FuzzedDataProvider& fuzzed_data_provider, const CTransaction& tx) noexcept
-{
-    // Avoid:
-    // policy/feerate.cpp:28:34: runtime error: signed integer overflow: 34873208148477500 * 1000 cannot be represented in type 'long'
-    //
-    // Reproduce using CFeeRate(348732081484775, 10).GetFeePerK()
-    const CAmount fee = std::min<CAmount>(ConsumeMoney(fuzzed_data_provider), std::numeric_limits<CAmount>::max() / static_cast<CAmount>(100000));
-    assert(MoneyRange(fee));
-    const int64_t time = fuzzed_data_provider.ConsumeIntegral<int64_t>();
-    const unsigned int entry_height = fuzzed_data_provider.ConsumeIntegral<unsigned int>();
-    const bool spends_coinbase = fuzzed_data_provider.ConsumeBool();
-    const unsigned int sig_op_cost = fuzzed_data_provider.ConsumeIntegralInRange<unsigned int>(0, MAX_BLOCK_SIGOPS_COST);
-    return CTxMemPoolEntry{MakeTransactionRef(tx), fee, time, entry_height, spends_coinbase, sig_op_cost, {}};
-}
-
 bool ContainsSpentInput(const CTransaction& tx, const CCoinsViewCache& inputs) noexcept
 {
     for (const CTxIn& tx_in : tx.vin) {

src/test/fuzz/util.h

@@ -23,7 +23,6 @@
 #include <test/fuzz/FuzzedDataProvider.h>
 #include <test/fuzz/fuzz.h>
 #include <test/util/net.h>
-#include <txmempool.h>
 #include <uint256.h>
 #include <version.h>
 
@@ -213,8 +212,6 @@ template <typename WeakEnumType, size_t size>
     return UintToArith256(ConsumeUInt256(fuzzed_data_provider));
 }
 
-[[nodiscard]] CTxMemPoolEntry ConsumeTxMemPoolEntry(FuzzedDataProvider& fuzzed_data_provider, const CTransaction& tx) noexcept;
-
 [[nodiscard]] CTxDestination ConsumeTxDestination(FuzzedDataProvider& fuzzed_data_provider) noexcept;
 
 template <typename T>

src/test/fuzz/util/mempool.cpp

@@ -0,0 +1,27 @@
+// Copyright (c) 2022 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 <consensus/amount.h>
+#include <primitives/transaction.h>
+#include <test/fuzz/FuzzedDataProvider.h>
+#include <test/fuzz/util.h>
+#include <test/fuzz/util/mempool.h>
+#include <txmempool.h>
+
+#include <limits>
+
+CTxMemPoolEntry ConsumeTxMemPoolEntry(FuzzedDataProvider& fuzzed_data_provider, const CTransaction& tx) noexcept
+{
+    // Avoid:
+    // policy/feerate.cpp:28:34: runtime error: signed integer overflow: 34873208148477500 * 1000 cannot be represented in type 'long'
+    //
+    // Reproduce using CFeeRate(348732081484775, 10).GetFeePerK()
+    const CAmount fee = std::min<CAmount>(ConsumeMoney(fuzzed_data_provider), std::numeric_limits<CAmount>::max() / static_cast<CAmount>(100000));
+    assert(MoneyRange(fee));
+    const int64_t time = fuzzed_data_provider.ConsumeIntegral<int64_t>();
+    const unsigned int entry_height = fuzzed_data_provider.ConsumeIntegral<unsigned int>();
+    const bool spends_coinbase = fuzzed_data_provider.ConsumeBool();
+    const unsigned int sig_op_cost = fuzzed_data_provider.ConsumeIntegralInRange<unsigned int>(0, MAX_BLOCK_SIGOPS_COST);
+    return CTxMemPoolEntry{MakeTransactionRef(tx), fee, time, entry_height, spends_coinbase, sig_op_cost, {}};
+}

src/test/fuzz/util/mempool.h

@@ -2,9 +2,12 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#ifndef BITCOIN_TEST_FUZZ_MEMPOOL_UTILS_H
+#ifndef BITCOIN_TEST_FUZZ_UTIL_MEMPOOL_H
-#define BITCOIN_TEST_FUZZ_MEMPOOL_UTILS_H
+#define BITCOIN_TEST_FUZZ_UTIL_MEMPOOL_H
 
+#include <primitives/transaction.h>
+#include <test/fuzz/FuzzedDataProvider.h>
+#include <txmempool.h>
 #include <validation.h>
 
 class DummyChainState final : public Chainstate
@@ -16,4 +19,6 @@ public:
     }
 };
 
-#endif // BITCOIN_TEST_FUZZ_MEMPOOL_UTILS_H
+[[nodiscard]] CTxMemPoolEntry ConsumeTxMemPoolEntry(FuzzedDataProvider& fuzzed_data_provider, const CTransaction& tx) noexcept;
+
+#endif // BITCOIN_TEST_FUZZ_UTIL_MEMPOOL_H

src/test/fuzz/validation_load_mempool.cpp

@@ -9,8 +9,8 @@
 #include <node/mempool_persist_args.h>
 #include <test/fuzz/FuzzedDataProvider.h>
 #include <test/fuzz/fuzz.h>
-#include <test/fuzz/mempool_utils.h>
 #include <test/fuzz/util.h>
+#include <test/fuzz/util/mempool.h>
 #include <test/util/setup_common.h>
 #include <txmempool.h>
 #include <util/time.h>