xref: /aosp_15_r20/system/core/libprocessgroup/util/include/processgroup/util.h (revision 00c7fec1bb09f3284aad6a6f96d2f63dfc3650ad)
1 /*
2  * Copyright (C) 2024 The Android Open Source Project
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 <map>
20 #include <string>
21 
22 #include "cgroup_descriptor.h"
23 
24 // Duplicated from cgrouprc.h. Don't depend on libcgrouprc here.
25 #define CGROUPRC_CONTROLLER_FLAG_MOUNTED 0x1
26 #define CGROUPRC_CONTROLLER_FLAG_NEEDS_ACTIVATION 0x2
27 #define CGROUPRC_CONTROLLER_FLAG_OPTIONAL 0x4
28 
29 unsigned int GetCgroupDepth(const std::string& controller_root, const std::string& cgroup_path);
30 
31 using CgroupControllerName = std::string;
32 using CgroupDescriptorMap = std::map<CgroupControllerName, CgroupDescriptor>;
33 bool ReadDescriptors(CgroupDescriptorMap* descriptors);
34 
35 bool ActivateControllers(const std::string& path, const CgroupDescriptorMap& descriptors);
36