e412dd12e8
Currently, there are some useless includes in the codebase. We can use a tool named include-what-you-use to optimize these includes. By using a strict include-what-you-use policy, we can get lots of benefits from it.
62 lines
2.3 KiB
C++
62 lines
2.3 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you under the Apache License, Version 2.0 (the
|
|
// "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing,
|
|
// software distributed under the License is distributed on an
|
|
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
// KIND, either express or implied. See the License for the
|
|
// specific language governing permissions and limitations
|
|
// under the License.
|
|
// This file is copied from
|
|
// https://github.com/apache/impala/blob/branch-2.9.0/be/src/util/os-util.h
|
|
// and modified by Doris
|
|
|
|
#pragma once
|
|
|
|
#include <cstdint>
|
|
#include <string>
|
|
|
|
#include "common/status.h"
|
|
|
|
namespace doris {
|
|
|
|
// Utility methods to read interesting values from /proc.
|
|
// TODO: Get stats for parent process.
|
|
|
|
// Container struct for statistics read from the /proc filesystem for a thread.
|
|
struct ThreadStats {
|
|
int64_t user_ns;
|
|
int64_t kernel_ns;
|
|
int64_t iowait_ns;
|
|
|
|
// Default constructor zeroes all members in case structure can't be filled by
|
|
// GetThreadStats.
|
|
ThreadStats() : user_ns(0), kernel_ns(0), iowait_ns(0) {}
|
|
};
|
|
|
|
// Populates ThreadStats object using a given buffer. The buffer is expected to
|
|
// conform to /proc/<pid>/task/<tid>/stat layout; an error will be returned otherwise.
|
|
//
|
|
// If 'name' is supplied, the extracted thread name will be written to it.
|
|
Status parse_stat(const std::string& buffer, std::string* name, ThreadStats* stats);
|
|
|
|
// Populates ThreadStats object for a given thread by reading from
|
|
// /proc/<pid>/task/<tid>/stat. Returns OK unless the file cannot be read or is in an
|
|
// unrecognised format, or if the kernel version is not modern enough.
|
|
Status get_thread_stats(int64_t tid, ThreadStats* stats);
|
|
|
|
// Disable core dumps for this process.
|
|
//
|
|
// This is useful particularly in tests where we have injected failures and don't
|
|
// want to generate a core dump from an "expected" crash.
|
|
void disable_core_dumps();
|
|
|
|
} // namespace doris
|