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       1                 :             : // Copyright (c) 2020-2022 The Bitcoin Core developers
       2                 :             : // Distributed under the MIT software license, see the accompanying
       3                 :             : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
       4                 :             : 
       5                 :             : #ifndef BITCOIN_DEPLOYMENTSTATUS_H
       6                 :             : #define BITCOIN_DEPLOYMENTSTATUS_H
       7                 :             : 
       8                 :             : #include <chain.h>
       9                 :             : #include <versionbits.h>
      10                 :             : 
      11                 :             : #include <limits>
      12                 :             : 
      13                 :             : /** Determine if a deployment is active for the next block */
      14                 :      860575 : inline bool DeploymentActiveAfter(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::BuriedDeployment dep, [[maybe_unused]] VersionBitsCache& versionbitscache)
      15                 :             : {
      16         [ -  + ]:      860575 :     assert(Consensus::ValidDeployment(dep));
      17         [ +  - ]:      860575 :     return (pindexPrev == nullptr ? 0 : pindexPrev->nHeight + 1) >= params.DeploymentHeight(dep);
      18                 :             : }
      19                 :             : 
      20                 :             : inline bool DeploymentActiveAfter(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos dep, VersionBitsCache& versionbitscache)
      21                 :             : {
      22                 :             :     assert(Consensus::ValidDeployment(dep));
      23                 :             :     return ThresholdState::ACTIVE == versionbitscache.State(pindexPrev, params, dep);
      24                 :             : }
      25                 :             : 
      26                 :             : /** Determine if a deployment is active for this block */
      27                 :     1466220 : inline bool DeploymentActiveAt(const CBlockIndex& index, const Consensus::Params& params, Consensus::BuriedDeployment dep, [[maybe_unused]] VersionBitsCache& versionbitscache)
      28                 :             : {
      29         [ -  + ]:     1466220 :     assert(Consensus::ValidDeployment(dep));
      30                 :     1466220 :     return index.nHeight >= params.DeploymentHeight(dep);
      31                 :             : }
      32                 :             : 
      33                 :             : inline bool DeploymentActiveAt(const CBlockIndex& index, const Consensus::Params& params, Consensus::DeploymentPos dep, VersionBitsCache& versionbitscache)
      34                 :             : {
      35                 :             :     assert(Consensus::ValidDeployment(dep));
      36                 :             :     return DeploymentActiveAfter(index.pprev, params, dep, versionbitscache);
      37                 :             : }
      38                 :             : 
      39                 :             : /** Determine if a deployment is enabled (can ever be active) */
      40                 :          15 : inline bool DeploymentEnabled(const Consensus::Params& params, Consensus::BuriedDeployment dep)
      41                 :             : {
      42         [ -  + ]:          15 :     assert(Consensus::ValidDeployment(dep));
      43                 :          15 :     return params.DeploymentHeight(dep) != std::numeric_limits<int>::max();
      44                 :             : }
      45                 :             : 
      46                 :           6 : inline bool DeploymentEnabled(const Consensus::Params& params, Consensus::DeploymentPos dep)
      47                 :             : {
      48         [ -  + ]:           6 :     assert(Consensus::ValidDeployment(dep));
      49                 :           6 :     return params.vDeployments[dep].nStartTime != Consensus::BIP9Deployment::NEVER_ACTIVE;
      50                 :             : }
      51                 :             : 
      52                 :             : #endif // BITCOIN_DEPLOYMENTSTATUS_H