1 /* 2 * Copyright 2014 Google, 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 <sys/cdefs.h> 20 #include <sys/types.h> 21 #include <string> 22 #include <vector> 23 24 __BEGIN_DECLS 25 26 static constexpr const char* CGROUPV2_CONTROLLER_NAME = "cgroup2"; 27 28 bool CgroupGetControllerPath(const std::string& cgroup_name, std::string* path); 29 bool CgroupGetAttributePath(const std::string& attr_name, std::string* path); 30 bool CgroupGetAttributePathForTask(const std::string& attr_name, int tid, std::string* path); 31 32 bool SetTaskProfiles(int tid, const std::vector<std::string>& profiles, bool use_fd_cache = false); 33 bool SetProcessProfiles(uid_t uid, pid_t pid, const std::vector<std::string>& profiles, 34 bool use_fd_cache = false); 35 36 #ifndef __ANDROID_VNDK__ 37 38 static constexpr const char* CGROUPS_RC_PATH = "/dev/cgroup_info/cgroup.rc"; 39 40 bool UsePerAppMemcg(); 41 42 // Return 0 and removes the cgroup if there are no longer any processes in it. 43 // Returns -1 in the case of an error occurring or if there are processes still running 44 // even after retrying for up to 200ms. 45 int killProcessGroup(uid_t uid, int initialPid, int signal); 46 47 // Returns the same as killProcessGroup(), however it does not retry, which means 48 // that it only returns 0 in the case that the cgroup exists and it contains no processes. 49 int killProcessGroupOnce(uid_t uid, int initialPid, int signal); 50 51 int createProcessGroup(uid_t uid, int initialPid, bool memControl = false); 52 53 // Set various properties of a process group. For these functions to work, the process group must 54 // have been created by passing memControl=true to createProcessGroup. 55 bool setProcessGroupSwappiness(uid_t uid, int initialPid, int swappiness); 56 bool setProcessGroupSoftLimit(uid_t uid, int initialPid, int64_t softLimitInBytes); 57 bool setProcessGroupLimit(uid_t uid, int initialPid, int64_t limitInBytes); 58 59 void removeAllProcessGroups(void); 60 61 #endif // __ANDROID_VNDK__ 62 63 __END_DECLS 64