a43901f842
Fixes #2830 Signed-off-by: Botond Dénes <bdenes@scylladb.com> Message-Id: <448a1f739ab8c88a7a5562bce8dce5ae6efdf934.1507302530.git.bdenes@scylladb.com>
49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Copyright (C) 2017 ScyllaDB
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*/
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#pragma once
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#include <core/file.hh>
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#include <core/semaphore.hh>
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class reader_resource_tracker {
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seastar::semaphore* _sem = nullptr;
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public:
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reader_resource_tracker() = default;
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explicit reader_resource_tracker(seastar::semaphore* sem)
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: _sem(sem) {
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}
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bool operator==(const reader_resource_tracker& other) const {
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return _sem == other._sem;
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}
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file track(file f) const;
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semaphore* get_semaphore() const {
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return _sem;
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}
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};
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inline reader_resource_tracker no_resource_tracking() {
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return reader_resource_tracker(nullptr);
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}
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