[validation] Add CChainState::ProcessTransaction()

This just calls through to AcceptToMemoryPool() internally, and is currently unused.

Also add a new transaction validation failure reason TX_NO_MEMPOOL to
indicate that there is no mempool.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/validation.h b/src/validation.h
index 4da8ec8d24..096e609abe 100644
--- a/src/validation.h
+++ b/src/validation.h
@@ -994,6 +994,15 @@ public:
      */
     bool ProcessNewBlockHeaders(const std::vector<CBlockHeader>& block, BlockValidationState& state, const CChainParams& chainparams, const CBlockIndex** ppindex = nullptr) LOCKS_EXCLUDED(cs_main);
 
+    /**
+     * Try to add a transaction to the memory pool.
+     *
+     * @param[in]  tx              The transaction to submit for mempool acceptance.
+     * @param[in]  test_accept     When true, run validation checks but don't submit to mempool.
+     */
+    [[nodiscard]] MempoolAcceptResult ProcessTransaction(const CTransactionRef& tx, bool test_accept=false)
+        EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+
     //! Load the block tree and coins database from disk, initializing state if we're running with -reindex
     bool LoadBlockIndex() EXCLUSIVE_LOCKS_REQUIRED(cs_main);