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fbdb46f5cb
Reviewed By: chadaustin Differential Revision: D17872966 fbshipit-source-id: cd60a364a2146f0dadbeca693b1d4a5d7c97ff63
45 lines
993 B
C++
45 lines
993 B
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This software may be used and distributed according to the terms of the
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* GNU General Public License version 2.
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*/
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#pragma once
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#include <cstdint>
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#include <folly/CppAttributes.h>
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#include <folly/Range.h>
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namespace facebook {
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namespace eden {
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/**
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* A structure representing information about a duration unit.
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*/
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struct ChronoUnit {
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folly::StringPiece name;
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intmax_t num;
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intmax_t den;
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};
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/**
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* Parse a string as a time duration unit.
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*
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* This is used to help parse time strings like "1m30s"
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* Given the unit portion of this string (e.g., "m", "ns") this returns a
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* pointer to an appropriate ChronoUnit, or nullptr if the string does not
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* correspond to a valid unit name.
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*
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* e.g.,
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* ns --> num=1, den=1000000000
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* ms --> num=1, den=1000
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* day --> num=86400, den=1
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*/
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const ChronoUnit* FOLLY_NULLABLE
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lookupChronoUnitInfo(folly::StringPiece unitName);
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} // namespace eden
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} // namespace facebook
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