OmniSciDB  d2f719934e
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
ForeignTableRefreshScheduler.h
Go to the documentation of this file.
1 /*
2  * Copyright 2020 OmniSci, Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 #include <atomic>
20 #include <condition_variable>
21 #include <mutex>
22 #include <string>
23 #include <thread>
24 
25 namespace foreign_storage {
27  public:
28  static void start(std::atomic<bool>& is_program_running);
29  static void stop();
30 
31  // The following methods are for testing purposes only
32  static void setWaitDuration(int64_t duration_in_seconds);
33  static bool isRunning();
34  static bool hasRefreshedTable();
35  static void resetHasRefreshedTable();
36 
37  private:
38  static void invalidateQueryEngineCaches();
39  static std::atomic<bool> is_scheduler_running_;
40  static std::chrono::seconds thread_wait_duration_;
41  static std::thread scheduler_thread_;
42  static std::atomic<bool> has_refreshed_table_;
43  static std::mutex wait_mutex_;
44  static std::condition_variable wait_condition_;
45 };
46 } // namespace foreign_storage
static void setWaitDuration(int64_t duration_in_seconds)
static void start(std::atomic< bool > &is_program_running)