1 files changed, 13 insertions, 1 deletions
diff --git a/src/consensus/params.h b/src/consensus/params.h
index 6240e82857..c9fbba12a2 100644
--- a/src/consensus/params.h
+++ b/src/consensus/params.h
@@ -6,7 +6,8 @@
 #ifndef BITCOIN_CONSENSUS_PARAMS_H
 #define BITCOIN_CONSENSUS_PARAMS_H
 
-#include "uint256.h"
+#include <uint256.h>
+#include <limits>
 #include <map>
 #include <string>
 
@@ -31,6 +32,15 @@ struct BIP9Deployment {
     int64_t nStartTime;
     /** Timeout/expiry MedianTime for the deployment attempt. */
     int64_t nTimeout;
+
+    /** Constant for nTimeout very far in the future. */
+    static constexpr int64_t NO_TIMEOUT = std::numeric_limits<int64_t>::max();
+
+    /** Special value for nStartTime indicating that the deployment is always active.
+     *  This is useful for testing, as it means tests don't need to deal with the activation
+     *  process (which takes at least 3 BIP9 intervals). Only tests that specifically test the
+     *  behaviour during activation cannot use this. */
+    static constexpr int64_t ALWAYS_ACTIVE = -1;
 };
 
 /**
@@ -39,6 +49,8 @@ struct BIP9Deployment {
 struct Params {
     uint256 hashGenesisBlock;
     int nSubsidyHalvingInterval;
+    /** Block height at which BIP16 becomes active */
+    int BIP16Height;
     /** Block height and hash at which BIP34 becomes active */
     int BIP34Height;
     uint256 BIP34Hash;