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Commit d48d7c81 authored by Suren Baghdasaryan's avatar Suren Baghdasaryan
Browse files

libprocessgroup/tools: Add settaskprofile command-line tool 



Add a command-line tool to apply task profile(s) to a given thread.

Test: taskprofile $pid ProcessCapacityHigh; grep cpuset /proc/$pid/cgroup
Test: taskprofile $pid ProcessCapacityNormal; grep cpuset /proc/$pid/cgroup
Bug: 204808810
Signed-off-by: default avatarSuren Baghdasaryan <surenb@google.com>
Change-Id: I1c13731f7a9a1161f36e27436ee104964aacbfd0
parent 9ac28517

libprocessgroup/tools/Android.bp

0 → 100644
+30 −0
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// Copyright (C) 2021 The Android Open Source Project

//

// Licensed 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.



package {

    default_applicable_licenses: ["Android-Apache-2.0"],

}



cc_binary {

    name: "settaskprofile",

    cflags: [

        "-Wall",

        "-Werror",

    ],



    srcs: ["settaskprofile.cpp"],

    shared_libs: [

        "libprocessgroup",

    ],

}

libprocessgroup/tools/settaskprofile.cpp

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+53 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2021 The Android Open Source Project

 *

 * Licensed 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.

 */



#include <stdlib.h>



#include <iostream>



#include <processgroup/processgroup.h>



[[noreturn]] static void usage(int exit_status) {

    std::cerr << "Usage: " << getprogname() << " <tid> <profile> [... profileN]" << std::endl

              << "    tid      Thread ID to apply the profiles to." << std::endl

              << "    profile  Name of the profile to apply." << std::endl

              << "Applies listed profiles to the thread with specified ID." << std::endl

              << "Profiles are applied in the order specified in the command line." << std::endl

              << "If applying a profile fails, remaining profiles are ignored." << std::endl;

    exit(exit_status);

}



int main(int argc, char* argv[]) {

    if (argc < 3) {

        usage(EXIT_FAILURE);

    }



    int tid = atoi(argv[1]);

    if (tid == 0) {

        std::cerr << "Invalid thread id" << std::endl;

        exit(EXIT_FAILURE);

    }



    for (int i = 2; i < argc; i++) {

        if (!SetTaskProfiles(tid, {argv[i]})) {

            std::cerr << "Failed to apply " << argv[i] << " profile" << std::endl;

            exit(EXIT_FAILURE);

        }

        std::cout << "Profile " << argv[i] << " is applied successfully!" << std::endl;

    }



    return 0;

}

shell_and_utilities/Android.bp

+1 −0
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@@ -26,6 +26,7 @@ phony { 
        "mkshrc",

        "newfs_msdos",

        "reboot",

        "settaskprofile",

        "sh",

        "simpleperf",

        "simpleperf_app_runner",