/*
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* Copyright 2014 Google, Inc
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <string>
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#include <vector>
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__BEGIN_DECLS
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static constexpr const char* CGROUPV2_CONTROLLER_NAME = "cgroup2";
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bool CgroupGetControllerPath(const std::string& cgroup_name, std::string* path);
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bool CgroupGetAttributePath(const std::string& attr_name, std::string* path);
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bool CgroupGetAttributePathForTask(const std::string& attr_name, int tid, std::string* path);
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bool SetTaskProfiles(int tid, const std::vector<std::string>& profiles, bool use_fd_cache = false);
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bool SetProcessProfiles(uid_t uid, pid_t pid, const std::vector<std::string>& profiles,
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bool use_fd_cache = false);
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#ifndef __ANDROID_VNDK__
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static constexpr const char* CGROUPS_RC_PATH = "/dev/cgroup_info/cgroup.rc";
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bool UsePerAppMemcg();
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// Return 0 and removes the cgroup if there are no longer any processes in it.
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// Returns -1 in the case of an error occurring or if there are processes still running
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// even after retrying for up to 200ms.
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// If max_processes is not nullptr, it returns the maximum number of processes seen in the cgroup
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// during the killing process. Note that this can be 0 if all processes from the process group have
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// already been terminated.
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int killProcessGroup(uid_t uid, int initialPid, int signal, int* max_processes = nullptr);
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// Returns the same as killProcessGroup(), however it does not retry, which means
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// that it only returns 0 in the case that the cgroup exists and it contains no processes.
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int killProcessGroupOnce(uid_t uid, int initialPid, int signal, int* max_processes = nullptr);
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int createProcessGroup(uid_t uid, int initialPid, bool memControl = false);
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// Set various properties of a process group. For these functions to work, the process group must
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// have been created by passing memControl=true to createProcessGroup.
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bool setProcessGroupSwappiness(uid_t uid, int initialPid, int swappiness);
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bool setProcessGroupSoftLimit(uid_t uid, int initialPid, int64_t softLimitInBytes);
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bool setProcessGroupLimit(uid_t uid, int initialPid, int64_t limitInBytes);
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void removeAllProcessGroups(void);
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#endif // __ANDROID_VNDK__
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__END_DECLS
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