86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#pragma once
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#include <gutil/integral_types.h>
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#include <sys/time.h>
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#include <algorithm>
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#include <cassert>
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#include <cstdio>
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#include <cstdlib>
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#include <exception>
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#include <iostream>
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#include <list>
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#include <map>
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#include <shared_mutex>
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#include <thread>
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namespace doris {
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typedef std::shared_lock<std::shared_mutex> CacheReadLock;
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typedef std::unique_lock<std::shared_mutex> CacheWriteLock;
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//#ifndef PARTITION_CACHE_DEV
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//#define PARTITION_CACHE_DEV
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//#endif
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struct CacheStat {
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static const uint32 DAY_SECONDS = 86400;
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long cache_time;
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long last_update_time;
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long last_read_time;
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uint32 read_count;
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CacheStat() { init(); }
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long cache_time_second() {
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struct timeval tv;
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gettimeofday(&tv, nullptr);
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return tv.tv_sec;
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}
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void init() {
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cache_time = 0;
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last_update_time = 0;
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last_read_time = 0;
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read_count = 0;
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}
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void update() {
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last_update_time = cache_time_second();
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if (cache_time == 0) {
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cache_time = last_update_time;
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}
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last_read_time = last_update_time;
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read_count++;
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}
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void query() {
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last_read_time = cache_time_second();
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read_count++;
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}
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double last_query_day() { return (cache_time_second() - last_read_time) * 1.0 / DAY_SECONDS; }
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double avg_query_count() {
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return read_count * DAY_SECONDS * 1.0 / (cache_time_second() - last_read_time + 1);
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}
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};
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} // namespace doris
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