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ThreadInfo.h
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1 /*
2  * Copyright 2022 HEAVY.AI, 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 <algorithm>
20 
21 struct ThreadInfo {
22  int64_t num_threads{0};
24 
25  ThreadInfo(const int64_t max_thread_count,
26  const int64_t num_elems,
27  const int64_t target_elems_per_thread) {
28  num_threads =
29  std::min(std::max(max_thread_count, int64_t(1)),
30  ((num_elems + target_elems_per_thread - 1) / target_elems_per_thread));
32  std::max((num_elems + num_threads - 1) / num_threads, int64_t(1));
33  }
34 };
int64_t num_elems_per_thread
Definition: ThreadInfo.h:23
int64_t num_threads
Definition: ThreadInfo.h:22
ThreadInfo(const int64_t max_thread_count, const int64_t num_elems, const int64_t target_elems_per_thread)
Definition: ThreadInfo.h:25