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128910ba23
The new experimental feature 'cgroups' enables the use of cgroups for all builds. This allows better containment and enables setting resource limits and getting some build stats.
65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
#pragma once
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#include "comparator.hh"
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#include "error.hh"
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#include "nlohmann/json_fwd.hpp"
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#include "types.hh"
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namespace nix {
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/**
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* The list of available experimental features.
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*
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* If you update this, don’t forget to also change the map defining their
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* string representation in the corresponding `.cc` file.
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**/
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enum struct ExperimentalFeature
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{
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CaDerivations,
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ImpureDerivations,
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Flakes,
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NixCommand,
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RecursiveNix,
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NoUrlLiterals,
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FetchClosure,
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ReplFlake,
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AutoAllocateUids,
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Cgroups,
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};
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/**
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* Just because writing `ExperimentalFeature::CaDerivations` is way too long
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*/
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using Xp = ExperimentalFeature;
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const std::optional<ExperimentalFeature> parseExperimentalFeature(
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const std::string_view & name);
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std::string_view showExperimentalFeature(const ExperimentalFeature);
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std::ostream & operator<<(
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std::ostream & str,
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const ExperimentalFeature & feature);
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/**
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* Parse a set of strings to the corresponding set of experimental features,
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* ignoring (but warning for) any unkwown feature.
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*/
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std::set<ExperimentalFeature> parseFeatures(const std::set<std::string> &);
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class MissingExperimentalFeature : public Error
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{
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public:
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ExperimentalFeature missingFeature;
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MissingExperimentalFeature(ExperimentalFeature);
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};
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/**
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* Semi-magic conversion to and from json.
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* See the nlohmann/json readme for more details.
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*/
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void to_json(nlohmann::json &, const ExperimentalFeature &);
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void from_json(const nlohmann::json &, ExperimentalFeature &);
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}
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