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/// @file WASM stub for cgroup.cc
/// cgroup support is Linux-only; all symbols are no-ops on WASM.

#include "lix/libutil/cgroup.hh"

#if __linux__
// On Linux these types exist — provide stubs.
namespace nix {

CgroupAvailableFeatureSet operator|(CgroupAvailableFeatureSet lhs, CgroupAvailableFeatureSet rhs)
{
    return static_cast<CgroupAvailableFeatureSet>(static_cast<uint8_t>(lhs) | static_cast<uint8_t>(rhs));
}

CgroupAvailableFeatureSet & operator|=(CgroupAvailableFeatureSet & lhs, CgroupAvailableFeatureSet rhs)
{
    lhs = lhs | rhs;
    return lhs;
}

CgroupAvailableFeatureSet operator&(CgroupAvailableFeatureSet lhs, CgroupAvailableFeatureSet rhs)
{
    return static_cast<CgroupAvailableFeatureSet>(static_cast<uint8_t>(lhs) & static_cast<uint8_t>(rhs));
}

bool hasCgroupFeature(CgroupAvailableFeatureSet featureSet, CgroupAvailableFeatureSet testedFeature)
{
    return (featureSet & testedFeature) == testedFeature;
}

CgroupAvailableFeatureSet detectAvailableCgroupFeatures()
{
    return static_cast<CgroupAvailableFeatureSet>(0);
}

std::optional<std::filesystem::path> getCgroupFS()
{
    return std::nullopt;
}

CgroupHierarchy getLocalHierarchy(std::filesystem::path const &)
{
    throw Error("cgroups not supported in WASM evaluator");
}

AutoDestroyCgroup::~AutoDestroyCgroup() {}
void AutoDestroyCgroup::destroy() {}
void AutoDestroyCgroup::kill() {}
void AutoDestroyCgroup::adoptProcess(int) {}
void AutoDestroyCgroup::cleansePreviousInstancesAndRecordOurself(const std::filesystem::path &) {}
CgroupStats AutoDestroyCgroup::getStatistics() const
{
    return {};
}

} // namespace nix

#endif // __linux__