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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "tunefileinfo.h"
#include <sys/mman.h>
#include <fcntl.h>
namespace search {
template <typename TuneControlConfig, typename MMapConfig>
void
TuneFileRandRead::setFromConfig(const enum TuneControlConfig::Io & tuneControlConfig, const MMapConfig & mmapFlags) {
switch ( tuneControlConfig) {
case TuneControlConfig::Io::NORMAL: _tuneControl = NORMAL; break;
case TuneControlConfig::Io::DIRECTIO: _tuneControl = DIRECTIO; break;
case TuneControlConfig::Io::MMAP: _tuneControl = MMAP; break;
default: _tuneControl = NORMAL; break;
}
setFromMmapConfig(mmapFlags);
}
template <typename MMapConfig>
void
TuneFileRandRead::setFromMmapConfig(const MMapConfig & mmapFlags) {
for (size_t i(0), m(mmapFlags.options.size()); i < m; i++) {
#ifdef __linux__
switch (mmapFlags.options[i]) {
case MMapConfig::Options::POPULATE: _mmapFlags |= MAP_POPULATE; break;
case MMapConfig::Options::HUGETLB: _mmapFlags |= MAP_HUGETLB; break;
}
#endif
}
#ifdef __linux__
switch (mmapFlags.advise) {
case MMapConfig::Advise::NORMAL: setAdvise(POSIX_FADV_NORMAL); break;
case MMapConfig::Advise::RANDOM: setAdvise(POSIX_FADV_RANDOM); break;
case MMapConfig::Advise::SEQUENTIAL: setAdvise(POSIX_FADV_SEQUENTIAL); break;
}
#endif
}
}
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