Bitcoin Core  22.99.0
P2P Digital Currency
deploymentstatus.cpp
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1 // Copyright (c) 2020 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 #include <deploymentstatus.h>
6 
7 #include <consensus/params.h>
8 #include <versionbits.h>
9 
10 #include <type_traits>
11 
13 
14 /* Basic sanity checking for BuriedDeployment/DeploymentPos enums and
15  * ValidDeployment check */
16 
17 static_assert(ValidDeployment(Consensus::DEPLOYMENT_TESTDUMMY), "sanity check of DeploymentPos failed (TESTDUMMY not valid)");
18 static_assert(!ValidDeployment(Consensus::MAX_VERSION_BITS_DEPLOYMENTS), "sanity check of DeploymentPos failed (MAX value considered valid)");
19 static_assert(!ValidDeployment(static_cast<Consensus::BuriedDeployment>(Consensus::DEPLOYMENT_TESTDUMMY)), "sanity check of BuriedDeployment failed (overlaps with DeploymentPos)");
20 
21 /* ValidDeployment only checks upper bounds for ensuring validity.
22  * This checks that the lowest possible value or the type is also a
23  * (specific) valid deployment so that lower bounds don't need to be checked.
24  */
25 
26 template<typename T, T x>
27 static constexpr bool is_minimum()
28 {
29  using U = typename std::underlying_type<T>::type;
30  return x == std::numeric_limits<U>::min();
31 }
32 
33 static_assert(is_minimum<Consensus::BuriedDeployment, Consensus::DEPLOYMENT_HEIGHTINCB>(), "heightincb is not minimum value for BuriedDeployment");
34 static_assert(is_minimum<Consensus::DeploymentPos, Consensus::DEPLOYMENT_TESTDUMMY>(), "testdummy is not minimum value for DeploymentPos");
Consensus::MAX_VERSION_BITS_DEPLOYMENTS
@ MAX_VERSION_BITS_DEPLOYMENTS
Definition: params.h:32
is_minimum
static constexpr bool is_minimum()
Definition: deploymentstatus.cpp:27
deploymentstatus.h
g_versionbitscache
VersionBitsCache g_versionbitscache
Global cache for versionbits deployment status.
Definition: deploymentstatus.cpp:12
Consensus::ValidDeployment
constexpr bool ValidDeployment(BuriedDeployment dep)
Definition: params.h:26
versionbits.h
Consensus::DEPLOYMENT_TESTDUMMY
@ DEPLOYMENT_TESTDUMMY
Definition: params.h:29
Consensus::BuriedDeployment
BuriedDeployment
A buried deployment is one where the height of the activation has been hardcoded into the client impl...
Definition: params.h:18
params.h
VersionBitsCache
BIP 9 allows multiple softforks to be deployed in parallel.
Definition: versionbits.h:78