579 lines
18 KiB
C
579 lines
18 KiB
C
/*
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* Copyright (c) 2008, The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google, Inc. nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <ctype.h>
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#include <dirent.h>
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#include <grp.h>
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#include <inttypes.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <cutils/sched_policy.h>
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struct cpu_info {
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long unsigned utime, ntime, stime, itime;
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long unsigned iowtime, irqtime, sirqtime;
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};
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#define PROC_NAME_LEN 64
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#define THREAD_NAME_LEN 32
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#define POLICY_NAME_LEN 4
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struct proc_info {
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struct proc_info *next;
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pid_t pid;
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pid_t tid;
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uid_t uid;
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gid_t gid;
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char name[PROC_NAME_LEN];
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char tname[THREAD_NAME_LEN];
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char state;
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uint64_t utime;
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uint64_t stime;
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uint64_t delta_utime;
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uint64_t delta_stime;
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uint64_t delta_time;
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uint64_t vss;
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uint64_t rss;
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int prs;
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int num_threads;
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char policy[POLICY_NAME_LEN];
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};
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struct proc_list {
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struct proc_info **array;
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int size;
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};
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#define die(...) { fprintf(stderr, __VA_ARGS__); exit(EXIT_FAILURE); }
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#define INIT_PROCS 50
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#define THREAD_MULT 8
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static struct proc_info **old_procs, **new_procs;
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static int num_old_procs, num_new_procs;
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static struct proc_info *free_procs;
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static int num_used_procs, num_free_procs;
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static int max_procs, delay, iterations, threads;
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static struct cpu_info old_cpu, new_cpu;
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static struct proc_info *alloc_proc(void);
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static void free_proc(struct proc_info *proc);
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static void read_procs(void);
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static int read_stat(char *filename, struct proc_info *proc);
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static void read_policy(int pid, struct proc_info *proc);
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static void add_proc(int proc_num, struct proc_info *proc);
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static int read_cmdline(char *filename, struct proc_info *proc);
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static int read_status(char *filename, struct proc_info *proc);
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static void print_procs(void);
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static struct proc_info *find_old_proc(pid_t pid, pid_t tid);
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static void free_old_procs(void);
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static int (*proc_cmp)(const void *a, const void *b);
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static int proc_cpu_cmp(const void *a, const void *b);
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static int proc_vss_cmp(const void *a, const void *b);
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static int proc_rss_cmp(const void *a, const void *b);
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static int proc_thr_cmp(const void *a, const void *b);
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static int numcmp(long long a, long long b);
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static void usage(char *cmd);
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static void exit_top(int signal) {
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exit(EXIT_FAILURE);
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}
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int top_main(int argc, char *argv[]) {
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num_used_procs = num_free_procs = 0;
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signal(SIGPIPE, exit_top);
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max_procs = 0;
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delay = 3;
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iterations = -1;
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proc_cmp = &proc_cpu_cmp;
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for (int i = 1; i < argc; i++) {
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if (!strcmp(argv[i], "-m")) {
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if (i + 1 >= argc) {
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fprintf(stderr, "Option -m expects an argument.\n");
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usage(argv[0]);
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exit(EXIT_FAILURE);
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}
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max_procs = atoi(argv[++i]);
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continue;
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}
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if (!strcmp(argv[i], "-n")) {
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if (i + 1 >= argc) {
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fprintf(stderr, "Option -n expects an argument.\n");
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usage(argv[0]);
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exit(EXIT_FAILURE);
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}
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iterations = atoi(argv[++i]);
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continue;
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}
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if (!strcmp(argv[i], "-d")) {
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if (i + 1 >= argc) {
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fprintf(stderr, "Option -d expects an argument.\n");
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usage(argv[0]);
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exit(EXIT_FAILURE);
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}
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delay = atoi(argv[++i]);
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continue;
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}
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if (!strcmp(argv[i], "-s")) {
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if (i + 1 >= argc) {
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fprintf(stderr, "Option -s expects an argument.\n");
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usage(argv[0]);
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exit(EXIT_FAILURE);
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}
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++i;
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if (!strcmp(argv[i], "cpu")) { proc_cmp = &proc_cpu_cmp; continue; }
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if (!strcmp(argv[i], "vss")) { proc_cmp = &proc_vss_cmp; continue; }
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if (!strcmp(argv[i], "rss")) { proc_cmp = &proc_rss_cmp; continue; }
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if (!strcmp(argv[i], "thr")) { proc_cmp = &proc_thr_cmp; continue; }
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fprintf(stderr, "Invalid argument \"%s\" for option -s.\n", argv[i]);
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exit(EXIT_FAILURE);
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}
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if (!strcmp(argv[i], "-t")) { threads = 1; continue; }
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if (!strcmp(argv[i], "-h")) {
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usage(argv[0]);
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exit(EXIT_SUCCESS);
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}
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fprintf(stderr, "Invalid argument \"%s\".\n", argv[i]);
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usage(argv[0]);
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exit(EXIT_FAILURE);
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}
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if (threads && proc_cmp == &proc_thr_cmp) {
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fprintf(stderr, "Sorting by threads per thread makes no sense!\n");
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exit(EXIT_FAILURE);
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}
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free_procs = NULL;
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num_new_procs = num_old_procs = 0;
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new_procs = old_procs = NULL;
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read_procs();
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while ((iterations == -1) || (iterations-- > 0)) {
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old_procs = new_procs;
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num_old_procs = num_new_procs;
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memcpy(&old_cpu, &new_cpu, sizeof(old_cpu));
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sleep(delay);
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read_procs();
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print_procs();
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free_old_procs();
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}
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return 0;
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}
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static struct proc_info *alloc_proc(void) {
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struct proc_info *proc;
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if (free_procs) {
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proc = free_procs;
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free_procs = free_procs->next;
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num_free_procs--;
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} else {
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proc = malloc(sizeof(*proc));
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if (!proc) die("Could not allocate struct process_info.\n");
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}
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num_used_procs++;
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return proc;
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}
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static void free_proc(struct proc_info *proc) {
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proc->next = free_procs;
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free_procs = proc;
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num_used_procs--;
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num_free_procs++;
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}
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#define MAX_LINE 256
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static void read_procs(void) {
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DIR *proc_dir, *task_dir;
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struct dirent *pid_dir, *tid_dir;
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char filename[64];
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FILE *file;
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int proc_num;
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struct proc_info *proc;
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pid_t pid, tid;
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int i;
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proc_dir = opendir("/proc");
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if (!proc_dir) die("Could not open /proc.\n");
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new_procs = calloc(INIT_PROCS * (threads ? THREAD_MULT : 1), sizeof(struct proc_info *));
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num_new_procs = INIT_PROCS * (threads ? THREAD_MULT : 1);
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file = fopen("/proc/stat", "r");
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if (!file) die("Could not open /proc/stat.\n");
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fscanf(file, "cpu %lu %lu %lu %lu %lu %lu %lu", &new_cpu.utime, &new_cpu.ntime, &new_cpu.stime,
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&new_cpu.itime, &new_cpu.iowtime, &new_cpu.irqtime, &new_cpu.sirqtime);
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fclose(file);
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proc_num = 0;
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while ((pid_dir = readdir(proc_dir))) {
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if (!isdigit(pid_dir->d_name[0]))
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continue;
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pid = atoi(pid_dir->d_name);
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struct proc_info cur_proc;
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if (!threads) {
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proc = alloc_proc();
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proc->pid = proc->tid = pid;
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sprintf(filename, "/proc/%d/stat", pid);
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read_stat(filename, proc);
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sprintf(filename, "/proc/%d/cmdline", pid);
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read_cmdline(filename, proc);
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sprintf(filename, "/proc/%d/status", pid);
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read_status(filename, proc);
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read_policy(pid, proc);
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proc->num_threads = 0;
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} else {
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sprintf(filename, "/proc/%d/cmdline", pid);
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read_cmdline(filename, &cur_proc);
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sprintf(filename, "/proc/%d/status", pid);
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read_status(filename, &cur_proc);
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proc = NULL;
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}
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sprintf(filename, "/proc/%d/task", pid);
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task_dir = opendir(filename);
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if (!task_dir) continue;
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while ((tid_dir = readdir(task_dir))) {
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if (!isdigit(tid_dir->d_name[0]))
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continue;
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if (threads) {
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tid = atoi(tid_dir->d_name);
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proc = alloc_proc();
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proc->pid = pid; proc->tid = tid;
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sprintf(filename, "/proc/%d/task/%d/stat", pid, tid);
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read_stat(filename, proc);
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read_policy(tid, proc);
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strcpy(proc->name, cur_proc.name);
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proc->uid = cur_proc.uid;
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proc->gid = cur_proc.gid;
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add_proc(proc_num++, proc);
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} else {
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proc->num_threads++;
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}
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}
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closedir(task_dir);
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if (!threads)
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add_proc(proc_num++, proc);
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}
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for (i = proc_num; i < num_new_procs; i++)
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new_procs[i] = NULL;
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closedir(proc_dir);
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}
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static int read_stat(char *filename, struct proc_info *proc) {
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FILE *file;
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char buf[MAX_LINE], *open_paren, *close_paren;
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file = fopen(filename, "r");
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if (!file) return 1;
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fgets(buf, MAX_LINE, file);
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fclose(file);
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/* Split at first '(' and last ')' to get process name. */
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open_paren = strchr(buf, '(');
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close_paren = strrchr(buf, ')');
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if (!open_paren || !close_paren) return 1;
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*open_paren = *close_paren = '\0';
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strncpy(proc->tname, open_paren + 1, THREAD_NAME_LEN);
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proc->tname[THREAD_NAME_LEN-1] = 0;
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/* Scan rest of string. */
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sscanf(close_paren + 1,
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" %c " "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d "
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"%" SCNu64
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"%" SCNu64 "%*d %*d %*d %*d %*d %*d %*d "
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"%" SCNu64
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"%" SCNu64 "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d "
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"%d",
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&proc->state,
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&proc->utime,
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&proc->stime,
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&proc->vss,
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&proc->rss,
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&proc->prs);
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return 0;
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}
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static void add_proc(int proc_num, struct proc_info *proc) {
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int i;
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if (proc_num >= num_new_procs) {
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new_procs = realloc(new_procs, 2 * num_new_procs * sizeof(struct proc_info *));
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if (!new_procs) die("Could not expand procs array.\n");
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for (i = num_new_procs; i < 2 * num_new_procs; i++)
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new_procs[i] = NULL;
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num_new_procs = 2 * num_new_procs;
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}
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new_procs[proc_num] = proc;
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}
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static int read_cmdline(char *filename, struct proc_info *proc) {
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FILE *file;
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char line[MAX_LINE];
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line[0] = '\0';
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file = fopen(filename, "r");
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if (!file) return 1;
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fgets(line, MAX_LINE, file);
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fclose(file);
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if (strlen(line) > 0) {
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strncpy(proc->name, line, PROC_NAME_LEN);
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proc->name[PROC_NAME_LEN-1] = 0;
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} else
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proc->name[0] = 0;
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return 0;
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}
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static void read_policy(int pid, struct proc_info *proc) {
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SchedPolicy p;
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if (get_sched_policy(pid, &p) < 0)
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strlcpy(proc->policy, "unk", POLICY_NAME_LEN);
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else {
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strlcpy(proc->policy, get_sched_policy_name(p), POLICY_NAME_LEN);
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proc->policy[2] = '\0';
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}
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}
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static int read_status(char *filename, struct proc_info *proc) {
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FILE *file;
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char line[MAX_LINE];
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unsigned int uid, gid;
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file = fopen(filename, "r");
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if (!file) return 1;
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while (fgets(line, MAX_LINE, file)) {
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sscanf(line, "Uid: %u", &uid);
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sscanf(line, "Gid: %u", &gid);
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}
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fclose(file);
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proc->uid = uid; proc->gid = gid;
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return 0;
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}
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static void print_procs(void) {
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int i;
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struct proc_info *old_proc, *proc;
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long unsigned total_delta_time;
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struct passwd *user;
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char *user_str, user_buf[20];
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for (i = 0; i < num_new_procs; i++) {
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if (new_procs[i]) {
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old_proc = find_old_proc(new_procs[i]->pid, new_procs[i]->tid);
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if (old_proc) {
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new_procs[i]->delta_utime = new_procs[i]->utime - old_proc->utime;
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new_procs[i]->delta_stime = new_procs[i]->stime - old_proc->stime;
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} else {
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new_procs[i]->delta_utime = 0;
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new_procs[i]->delta_stime = 0;
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}
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new_procs[i]->delta_time = new_procs[i]->delta_utime + new_procs[i]->delta_stime;
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}
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}
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total_delta_time = (new_cpu.utime + new_cpu.ntime + new_cpu.stime + new_cpu.itime
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+ new_cpu.iowtime + new_cpu.irqtime + new_cpu.sirqtime)
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- (old_cpu.utime + old_cpu.ntime + old_cpu.stime + old_cpu.itime
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+ old_cpu.iowtime + old_cpu.irqtime + old_cpu.sirqtime);
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qsort(new_procs, num_new_procs, sizeof(struct proc_info *), proc_cmp);
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printf("\n\n\n");
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printf("User %ld%%, System %ld%%, IOW %ld%%, IRQ %ld%%\n",
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((new_cpu.utime + new_cpu.ntime) - (old_cpu.utime + old_cpu.ntime)) * 100 / total_delta_time,
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((new_cpu.stime ) - (old_cpu.stime)) * 100 / total_delta_time,
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((new_cpu.iowtime) - (old_cpu.iowtime)) * 100 / total_delta_time,
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((new_cpu.irqtime + new_cpu.sirqtime)
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- (old_cpu.irqtime + old_cpu.sirqtime)) * 100 / total_delta_time);
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printf("User %ld + Nice %ld + Sys %ld + Idle %ld + IOW %ld + IRQ %ld + SIRQ %ld = %ld\n",
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new_cpu.utime - old_cpu.utime,
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new_cpu.ntime - old_cpu.ntime,
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new_cpu.stime - old_cpu.stime,
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new_cpu.itime - old_cpu.itime,
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new_cpu.iowtime - old_cpu.iowtime,
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new_cpu.irqtime - old_cpu.irqtime,
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new_cpu.sirqtime - old_cpu.sirqtime,
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total_delta_time);
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printf("\n");
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if (!threads)
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printf("%5s %2s %4s %1s %5s %7s %7s %3s %-8s %s\n", "PID", "PR", "CPU%", "S", "#THR", "VSS", "RSS", "PCY", "UID", "Name");
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else
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printf("%5s %5s %2s %4s %1s %7s %7s %3s %-8s %-15s %s\n", "PID", "TID", "PR", "CPU%", "S", "VSS", "RSS", "PCY", "UID", "Thread", "Proc");
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for (i = 0; i < num_new_procs; i++) {
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proc = new_procs[i];
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if (!proc || (max_procs && (i >= max_procs)))
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break;
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user = getpwuid(proc->uid);
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if (user && user->pw_name) {
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user_str = user->pw_name;
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} else {
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snprintf(user_buf, 20, "%d", proc->uid);
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user_str = user_buf;
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}
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if (!threads) {
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printf("%5d %2d %3" PRIu64 "%% %c %5d %6" PRIu64 "K %6" PRIu64 "K %3s %-8.8s %s\n",
|
|
proc->pid, proc->prs, proc->delta_time * 100 / total_delta_time, proc->state, proc->num_threads,
|
|
proc->vss / 1024, proc->rss * getpagesize() / 1024, proc->policy, user_str, proc->name[0] != 0 ? proc->name : proc->tname);
|
|
} else {
|
|
printf("%5d %5d %2d %3" PRIu64 "%% %c %6" PRIu64 "K %6" PRIu64 "K %3s %-8.8s %-15s %s\n",
|
|
proc->pid, proc->tid, proc->prs, proc->delta_time * 100 / total_delta_time, proc->state,
|
|
proc->vss / 1024, proc->rss * getpagesize() / 1024, proc->policy, user_str, proc->tname, proc->name);
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct proc_info *find_old_proc(pid_t pid, pid_t tid) {
|
|
int i;
|
|
|
|
for (i = 0; i < num_old_procs; i++)
|
|
if (old_procs[i] && (old_procs[i]->pid == pid) && (old_procs[i]->tid == tid))
|
|
return old_procs[i];
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void free_old_procs(void) {
|
|
int i;
|
|
|
|
for (i = 0; i < num_old_procs; i++)
|
|
if (old_procs[i])
|
|
free_proc(old_procs[i]);
|
|
|
|
free(old_procs);
|
|
}
|
|
|
|
static int proc_cpu_cmp(const void *a, const void *b) {
|
|
struct proc_info *pa, *pb;
|
|
|
|
pa = *((struct proc_info **)a); pb = *((struct proc_info **)b);
|
|
|
|
if (!pa && !pb) return 0;
|
|
if (!pa) return 1;
|
|
if (!pb) return -1;
|
|
|
|
return -numcmp(pa->delta_time, pb->delta_time);
|
|
}
|
|
|
|
static int proc_vss_cmp(const void *a, const void *b) {
|
|
struct proc_info *pa, *pb;
|
|
|
|
pa = *((struct proc_info **)a); pb = *((struct proc_info **)b);
|
|
|
|
if (!pa && !pb) return 0;
|
|
if (!pa) return 1;
|
|
if (!pb) return -1;
|
|
|
|
return -numcmp(pa->vss, pb->vss);
|
|
}
|
|
|
|
static int proc_rss_cmp(const void *a, const void *b) {
|
|
struct proc_info *pa, *pb;
|
|
|
|
pa = *((struct proc_info **)a); pb = *((struct proc_info **)b);
|
|
|
|
if (!pa && !pb) return 0;
|
|
if (!pa) return 1;
|
|
if (!pb) return -1;
|
|
|
|
return -numcmp(pa->rss, pb->rss);
|
|
}
|
|
|
|
static int proc_thr_cmp(const void *a, const void *b) {
|
|
struct proc_info *pa, *pb;
|
|
|
|
pa = *((struct proc_info **)a); pb = *((struct proc_info **)b);
|
|
|
|
if (!pa && !pb) return 0;
|
|
if (!pa) return 1;
|
|
if (!pb) return -1;
|
|
|
|
return -numcmp(pa->num_threads, pb->num_threads);
|
|
}
|
|
|
|
static int numcmp(long long a, long long b) {
|
|
if (a < b) return -1;
|
|
if (a > b) return 1;
|
|
return 0;
|
|
}
|
|
|
|
static void usage(char *cmd) {
|
|
fprintf(stderr, "Usage: %s [ -m max_procs ] [ -n iterations ] [ -d delay ] [ -s sort_column ] [ -t ] [ -h ]\n"
|
|
" -m num Maximum number of processes to display.\n"
|
|
" -n num Updates to show before exiting.\n"
|
|
" -d num Seconds to wait between updates.\n"
|
|
" -s col Column to sort by (cpu,vss,rss,thr).\n"
|
|
" -t Show threads instead of processes.\n"
|
|
" -h Display this help screen.\n",
|
|
cmd);
|
|
}
|