/*
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* Copyright (C) 2018 The Android Open Source Project
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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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#include <errno.h>
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#include <inttypes.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <iostream>
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#include <sstream>
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#include <string>
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#include <vector>
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#include <android-base/stringprintf.h>
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#include <meminfo/procmeminfo.h>
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using Vma = ::android::meminfo::Vma;
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using ProcMemInfo = ::android::meminfo::ProcMemInfo;
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using MemUsage = ::android::meminfo::MemUsage;
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// Global flags to control procmem output
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// Set to use page idle bits for working set detection
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bool use_pageidle = false;
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// hides map entries with zero rss
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bool hide_zeroes = false;
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// Reset working set and exit
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bool reset_wss = false;
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// Show working set, mutually exclusive with reset_wss;
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bool show_wss = false;
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[[noreturn]] static void usage(int exit_status) {
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fprintf(stderr,
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"Usage: %s [-i] [ -w | -W ] [ -p | -m ] [ -h ] pid\n"
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" -i Uses idle page tracking for working set statistics.\n"
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" -w Displays statistics for the working set only.\n"
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" -W Resets the working set of the process.\n"
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" -p Sort by PSS.\n"
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" -u Sort by USS.\n"
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" -m Sort by mapping order (as read from /proc).\n"
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" -h Hide maps with no RSS.\n",
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getprogname());
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exit(exit_status);
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}
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static void print_separator(std::stringstream& ss) {
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if (show_wss) {
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ss << ::android::base::StringPrintf("%7s %7s %7s %7s %7s %7s %7s %s\n", "-------",
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"-------", "-------", "-------", "-------", "-------",
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"-------", "");
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return;
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}
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ss << ::android::base::StringPrintf("%7s %7s %7s %7s %7s %7s %7s %7s %s\n", "-------",
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"-------", "-------", "-------", "-------", "-------",
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"-------", "-------", "");
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}
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static void print_header(std::stringstream& ss) {
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if (show_wss) {
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ss << ::android::base::StringPrintf("%7s %7s %7s %7s %7s %7s %7s %s\n", "WRss",
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"WPss", "WUss", "WShCl", "WShDi", "WPrCl", "WPrDi",
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"Name");
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} else {
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ss << ::android::base::StringPrintf("%7s %7s %7s %7s %7s %7s %7s %7s %s\n", "Vss",
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"Rss", "Pss", "Uss", "ShCl", "ShDi", "PrCl", "PrDi",
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"Name");
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}
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print_separator(ss);
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}
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static void print_stats(std::stringstream& ss, const MemUsage& stats) {
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if (!show_wss) {
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ss << ::android::base::StringPrintf("%6" PRIu64 "K ", stats.vss / 1024);
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}
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ss << ::android::base::StringPrintf("%6" PRIu64 "K %6" PRIu64 "K %6" PRIu64 "K %6" PRIu64
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"K %6" PRIu64 "K %6" PRIu64 "K %6" PRIu64 "K ",
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stats.rss / 1024, stats.pss / 1024, stats.uss / 1024,
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stats.shared_clean / 1024, stats.shared_dirty / 1024,
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stats.private_clean / 1024, stats.private_dirty / 1024);
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}
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static int show(const MemUsage& proc_stats, const std::vector<Vma>& maps) {
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std::stringstream ss;
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print_header(ss);
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for (auto& vma : maps) {
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const MemUsage& vma_stats = vma.usage;
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if (hide_zeroes && vma_stats.rss == 0) {
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continue;
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}
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print_stats(ss, vma_stats);
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ss << vma.name << std::endl;
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}
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print_separator(ss);
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print_stats(ss, proc_stats);
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ss << "TOTAL" << std::endl;
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std::cout << ss.str();
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return 0;
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}
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int main(int argc, char* argv[]) {
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int opt;
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auto pss_sort = [](const Vma& a, const Vma& b) {
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uint64_t pss_a = a.usage.pss;
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uint64_t pss_b = b.usage.pss;
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return pss_a > pss_b;
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};
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auto uss_sort = [](const Vma& a, const Vma& b) {
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uint64_t uss_a = a.usage.uss;
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uint64_t uss_b = b.usage.uss;
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return uss_a > uss_b;
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};
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std::function<bool(const Vma& a, const Vma& b)> sort_func = nullptr;
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while ((opt = getopt(argc, argv, "himpuWw")) != -1) {
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switch (opt) {
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case 'h':
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hide_zeroes = true;
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break;
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case 'i':
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// TODO: libmeminfo doesn't support the flag to chose
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// between idle page tracking vs clear_refs. So for now,
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// this flag is unused and the library defaults to using
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// /proc/<pid>/clear_refs for finding the working set.
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use_pageidle = true;
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break;
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case 'm':
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// this is the default
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break;
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case 'p':
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sort_func = pss_sort;
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break;
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case 'u':
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sort_func = uss_sort;
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break;
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case 'W':
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reset_wss = true;
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break;
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case 'w':
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show_wss = true;
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break;
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case '?':
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usage(EXIT_SUCCESS);
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default:
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usage(EXIT_FAILURE);
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}
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}
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if (optind != (argc - 1)) {
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fprintf(stderr, "Need exactly one pid at the end\n");
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usage(EXIT_FAILURE);
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}
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pid_t pid = atoi(argv[optind]);
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if (pid == 0) {
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std::cerr << "Invalid process id" << std::endl;
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exit(EXIT_FAILURE);
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}
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if (reset_wss) {
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if (!ProcMemInfo::ResetWorkingSet(pid)) {
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std::cerr << "Failed to reset working set of pid : " << pid << std::endl;
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exit(EXIT_FAILURE);
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}
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return 0;
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}
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ProcMemInfo proc(pid, show_wss);
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const MemUsage& proc_stats = proc.Usage();
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std::vector<Vma> maps(proc.Maps());
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if (sort_func != nullptr) {
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std::sort(maps.begin(), maps.end(), sort_func);
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}
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return show(proc_stats, maps);
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}
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