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author | Randolph Tan <randolph@10gen.com> | 2015-06-10 18:19:51 -0400 |
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committer | Randolph Tan <randolph@10gen.com> | 2015-06-12 15:00:55 -0400 |
commit | c46879fbb958214170d2f75edaf58f29547b8cba (patch) | |
tree | 6ee5d9bc09f1e248d7347aec9b2cce893593eaf8 /src/mongo/util/tick_source.h | |
parent | d33a3062941a2fc802df733ea273ac2910c61433 (diff) | |
download | mongo-c46879fbb958214170d2f75edaf58f29547b8cba.tar.gz |
SERVER-18922 Refactor Timer to have customizable tick source
Diffstat (limited to 'src/mongo/util/tick_source.h')
-rw-r--r-- | src/mongo/util/tick_source.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/mongo/util/tick_source.h b/src/mongo/util/tick_source.h new file mode 100644 index 00000000000..90d952c4e4e --- /dev/null +++ b/src/mongo/util/tick_source.h @@ -0,0 +1,54 @@ +/** + * Copyright (C) 2015 MongoDB Inc. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License, version 3, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * As a special exception, the copyright holders give permission to link the + * code of portions of this program with the OpenSSL library under certain + * conditions as described in each individual source file and distribute + * linked combinations including the program with the OpenSSL library. You + * must comply with the GNU Affero General Public License in all respects for + * all of the code used other than as permitted herein. If you modify file(s) + * with this exception, you may extend this exception to your version of the + * file(s), but you are not obligated to do so. If you do not wish to do so, + * delete this exception statement from your version. If you delete this + * exception statement from all source files in the program, then also delete + * it in the license file. + */ + +#pragma once + +#include <cstdint> + +namespace mongo { + + /** + * Interface for objects generating ticks that roughly represents the passage of time. + */ + class TickSource { + public: + using Tick = int64_t; + + virtual ~TickSource() = default; + + /** + * Returns the current tick count from this source. + */ + virtual Tick getTicks() = 0; + + /** + * Returns the conversion ratio from ticks to seconds. + */ + virtual Tick getTicksPerSecond() = 0; + }; +} // namespace mongo |