auto import from //depot/cupcake/@135843
diff --git a/toolbox/top.c b/toolbox/top.c
new file mode 100644
index 0000000..dcc0843
--- /dev/null
+++ b/toolbox/top.c
@@ -0,0 +1,550 @@
+/*
+ * Copyright (c) 2008, The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google, Inc. nor the names of its contributors
+ * may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <ctype.h>
+#include <dirent.h>
+#include <grp.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+struct cpu_info {
+ long unsigned utime, ntime, stime, itime;
+ long unsigned iowtime, irqtime, sirqtime;
+};
+
+#define PROC_NAME_LEN 64
+#define THREAD_NAME_LEN 32
+
+struct proc_info {
+ struct proc_info *next;
+ pid_t pid;
+ pid_t tid;
+ uid_t uid;
+ gid_t gid;
+ char name[PROC_NAME_LEN];
+ char tname[THREAD_NAME_LEN];
+ char state;
+ long unsigned utime;
+ long unsigned stime;
+ long unsigned delta_utime;
+ long unsigned delta_stime;
+ long unsigned delta_time;
+ long vss;
+ long rss;
+ int num_threads;
+};
+
+struct proc_list {
+ struct proc_info **array;
+ int size;
+};
+
+#define die(...) { fprintf(stderr, __VA_ARGS__); exit(EXIT_FAILURE); }
+
+#define INIT_PROCS 50
+#define THREAD_MULT 8
+static struct proc_info **old_procs, **new_procs;
+static int num_old_procs, num_new_procs;
+static struct proc_info *free_procs;
+static int num_used_procs, num_free_procs;
+
+static int max_procs, delay, iterations, threads;
+
+static struct cpu_info old_cpu, new_cpu;
+
+static struct proc_info *alloc_proc(void);
+static void free_proc(struct proc_info *proc);
+static void read_procs(void);
+static int read_stat(char *filename, struct proc_info *proc);
+static void add_proc(int proc_num, struct proc_info *proc);
+static int read_cmdline(char *filename, struct proc_info *proc);
+static int read_status(char *filename, struct proc_info *proc);
+static void print_procs(void);
+static struct proc_info *find_old_proc(pid_t pid, pid_t tid);
+static void free_old_procs(void);
+static int (*proc_cmp)(const void *a, const void *b);
+static int proc_cpu_cmp(const void *a, const void *b);
+static int proc_vss_cmp(const void *a, const void *b);
+static int proc_rss_cmp(const void *a, const void *b);
+static int proc_thr_cmp(const void *a, const void *b);
+static int numcmp(long long a, long long b);
+static void usage(char *cmd);
+
+int top_main(int argc, char *argv[]) {
+ int i;
+
+ num_used_procs = num_free_procs = 0;
+
+ max_procs = 0;
+ delay = 3;
+ iterations = -1;
+ proc_cmp = &proc_cpu_cmp;
+ for (i = 1; i < argc; i++) {
+ if (!strcmp(argv[i], "-m")) {
+ if (i + 1 >= argc) {
+ fprintf(stderr, "Option -m expects an argument.\n");
+ usage(argv[0]);
+ exit(EXIT_FAILURE);
+ }
+ max_procs = atoi(argv[++i]);
+ continue;
+ }
+ if (!strcmp(argv[i], "-n")) {
+ if (i + 1 >= argc) {
+ fprintf(stderr, "Option -n expects an argument.\n");
+ usage(argv[0]);
+ exit(EXIT_FAILURE);
+ }
+ iterations = atoi(argv[++i]);
+ continue;
+ }
+ if (!strcmp(argv[i], "-d")) {
+ if (i + 1 >= argc) {
+ fprintf(stderr, "Option -d expects an argument.\n");
+ usage(argv[0]);
+ exit(EXIT_FAILURE);
+ }
+ delay = atoi(argv[++i]);
+ continue;
+ }
+ if (!strcmp(argv[i], "-s")) {
+ if (i + 1 >= argc) {
+ fprintf(stderr, "Option -s expects an argument.\n");
+ usage(argv[0]);
+ exit(EXIT_FAILURE);
+ }
+ ++i;
+ if (!strcmp(argv[i], "cpu")) { proc_cmp = &proc_cpu_cmp; continue; }
+ if (!strcmp(argv[i], "vss")) { proc_cmp = &proc_vss_cmp; continue; }
+ if (!strcmp(argv[i], "rss")) { proc_cmp = &proc_rss_cmp; continue; }
+ if (!strcmp(argv[i], "thr")) { proc_cmp = &proc_thr_cmp; continue; }
+ fprintf(stderr, "Invalid argument \"%s\" for option -s.\n", argv[i]);
+ exit(EXIT_FAILURE);
+ }
+ if (!strcmp(argv[i], "-t")) { threads = 1; continue; }
+ if (!strcmp(argv[i], "-h")) {
+ usage(argv[0]);
+ exit(EXIT_SUCCESS);
+ }
+ fprintf(stderr, "Invalid argument \"%s\".\n", argv[i]);
+ usage(argv[0]);
+ exit(EXIT_FAILURE);
+ }
+
+ if (threads && proc_cmp == &proc_thr_cmp) {
+ fprintf(stderr, "Sorting by threads per thread makes no sense!\n");
+ exit(EXIT_FAILURE);
+ }
+
+ free_procs = NULL;
+
+ num_new_procs = num_old_procs = 0;
+ new_procs = old_procs = NULL;
+
+ read_procs();
+ while ((iterations == -1) || (iterations-- > 0)) {
+ old_procs = new_procs;
+ num_old_procs = num_new_procs;
+ memcpy(&old_cpu, &new_cpu, sizeof(old_cpu));
+ sleep(delay);
+ read_procs();
+ print_procs();
+ free_old_procs();
+ }
+
+ return 0;
+}
+
+static struct proc_info *alloc_proc(void) {
+ struct proc_info *proc;
+
+ if (free_procs) {
+ proc = free_procs;
+ free_procs = free_procs->next;
+ num_free_procs--;
+ } else {
+ proc = malloc(sizeof(*proc));
+ if (!proc) die("Could not allocate struct process_info.\n");
+ }
+
+ num_used_procs++;
+
+ return proc;
+}
+
+static void free_proc(struct proc_info *proc) {
+ proc->next = free_procs;
+ free_procs = proc;
+
+ num_used_procs--;
+ num_free_procs++;
+}
+
+#define MAX_LINE 256
+
+static void read_procs(void) {
+ DIR *proc_dir, *task_dir;
+ struct dirent *pid_dir, *tid_dir;
+ char filename[64];
+ FILE *file;
+ int proc_num;
+ struct proc_info *proc;
+ pid_t pid, tid;
+
+ int i;
+
+ proc_dir = opendir("/proc");
+ if (!proc_dir) die("Could not open /proc.\n");
+
+ new_procs = calloc(INIT_PROCS * (threads ? THREAD_MULT : 1), sizeof(struct proc_info *));
+ num_new_procs = INIT_PROCS * (threads ? THREAD_MULT : 1);
+
+ file = fopen("/proc/stat", "r");
+ if (!file) die("Could not open /proc/stat.\n");
+ fscanf(file, "cpu %lu %lu %lu %lu %lu %lu %lu", &new_cpu.utime, &new_cpu.ntime, &new_cpu.stime,
+ &new_cpu.itime, &new_cpu.iowtime, &new_cpu.irqtime, &new_cpu.sirqtime);
+ fclose(file);
+
+ proc_num = 0;
+ while ((pid_dir = readdir(proc_dir))) {
+ if (!isdigit(pid_dir->d_name[0]))
+ continue;
+
+ pid = atoi(pid_dir->d_name);
+
+ struct proc_info cur_proc;
+
+ if (!threads) {
+ proc = alloc_proc();
+
+ proc->pid = proc->tid = pid;
+
+ sprintf(filename, "/proc/%d/stat", pid);
+ read_stat(filename, proc);
+
+ sprintf(filename, "/proc/%d/cmdline", pid);
+ read_cmdline(filename, proc);
+
+ sprintf(filename, "/proc/%d/status", pid);
+ read_status(filename, proc);
+
+ proc->num_threads = 0;
+ } else {
+ sprintf(filename, "/proc/%d/cmdline", pid);
+ read_cmdline(filename, &cur_proc);
+
+ sprintf(filename, "/proc/%d/status", pid);
+ read_status(filename, &cur_proc);
+
+ proc = NULL;
+ }
+
+ sprintf(filename, "/proc/%d/task", pid);
+ task_dir = opendir(filename);
+ if (!task_dir) continue;
+
+ while ((tid_dir = readdir(task_dir))) {
+ if (!isdigit(tid_dir->d_name[0]))
+ continue;
+
+ if (threads) {
+ tid = atoi(tid_dir->d_name);
+
+ proc = alloc_proc();
+
+ proc->pid = pid; proc->tid = tid;
+
+ sprintf(filename, "/proc/%d/task/%d/stat", pid, tid);
+ read_stat(filename, proc);
+
+ strcpy(proc->name, cur_proc.name);
+ proc->uid = cur_proc.uid;
+ proc->gid = cur_proc.gid;
+
+ add_proc(proc_num++, proc);
+ } else {
+ proc->num_threads++;
+ }
+ }
+
+ closedir(task_dir);
+
+ if (!threads)
+ add_proc(proc_num++, proc);
+ }
+
+ for (i = proc_num; i < num_new_procs; i++)
+ new_procs[i] = NULL;
+
+ closedir(proc_dir);
+}
+
+static int read_stat(char *filename, struct proc_info *proc) {
+ FILE *file;
+ char buf[MAX_LINE], *open_paren, *close_paren;
+ int res, idx;
+
+ file = fopen(filename, "r");
+ if (!file) return 1;
+ fgets(buf, MAX_LINE, file);
+ fclose(file);
+
+ /* Split at first '(' and last ')' to get process name. */
+ open_paren = strchr(buf, '(');
+ close_paren = strrchr(buf, ')');
+ if (!open_paren || !close_paren) return 1;
+
+ *open_paren = *close_paren = '\0';
+ strncpy(proc->tname, open_paren + 1, THREAD_NAME_LEN);
+ proc->tname[THREAD_NAME_LEN-1] = 0;
+
+ /* Scan rest of string. */
+ sscanf(close_paren + 1, " %c %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d "
+ "%lu %lu %*d %*d %*d %*d %*d %*d %*d %lu %ld",
+ &proc->state, &proc->utime, &proc->stime, &proc->vss, &proc->rss);
+
+ return 0;
+}
+
+static void add_proc(int proc_num, struct proc_info *proc) {
+ int i;
+
+ if (proc_num >= num_new_procs) {
+ new_procs = realloc(new_procs, 2 * num_new_procs * sizeof(struct proc_info *));
+ if (!new_procs) die("Could not expand procs array.\n");
+ for (i = num_new_procs; i < 2 * num_new_procs; i++)
+ new_procs[i] = NULL;
+ num_new_procs = 2 * num_new_procs;
+ }
+ new_procs[proc_num] = proc;
+}
+
+static int read_cmdline(char *filename, struct proc_info *proc) {
+ FILE *file;
+ char line[MAX_LINE];
+
+ line[0] = '\0';
+ file = fopen(filename, "r");
+ if (!file) return 1;
+ fgets(line, MAX_LINE, file);
+ fclose(file);
+ if (strlen(line) > 0) {
+ strncpy(proc->name, line, PROC_NAME_LEN);
+ proc->name[PROC_NAME_LEN-1] = 0;
+ } else
+ proc->name[0] = 0;
+ return 0;
+}
+
+static int read_status(char *filename, struct proc_info *proc) {
+ FILE *file;
+ char line[MAX_LINE];
+ unsigned int uid, gid;
+
+ file = fopen(filename, "r");
+ if (!file) return 1;
+ while (fgets(line, MAX_LINE, file)) {
+ sscanf(line, "Uid: %u", &uid);
+ sscanf(line, "Gid: %u", &gid);
+ }
+ fclose(file);
+ proc->uid = uid; proc->gid = gid;
+ return 0;
+}
+
+static void print_procs(void) {
+ int i;
+ struct proc_info *old_proc, *proc;
+ long unsigned total_delta_time;
+ struct passwd *user;
+ struct group *group;
+ char *user_str, user_buf[20];
+ char *group_str, group_buf[20];
+
+ for (i = 0; i < num_new_procs; i++) {
+ if (new_procs[i]) {
+ old_proc = find_old_proc(new_procs[i]->pid, new_procs[i]->tid);
+ if (old_proc) {
+ new_procs[i]->delta_utime = new_procs[i]->utime - old_proc->utime;
+ new_procs[i]->delta_stime = new_procs[i]->stime - old_proc->stime;
+ } else {
+ new_procs[i]->delta_utime = 0;
+ new_procs[i]->delta_stime = 0;
+ }
+ new_procs[i]->delta_time = new_procs[i]->delta_utime + new_procs[i]->delta_stime;
+ }
+ }
+
+ total_delta_time = (new_cpu.utime + new_cpu.ntime + new_cpu.stime + new_cpu.itime
+ + new_cpu.iowtime + new_cpu.irqtime + new_cpu.sirqtime)
+ - (old_cpu.utime + old_cpu.ntime + old_cpu.stime + old_cpu.itime
+ + old_cpu.iowtime + old_cpu.irqtime + old_cpu.sirqtime);
+
+ qsort(new_procs, num_new_procs, sizeof(struct proc_info *), proc_cmp);
+
+ printf("\n\n\n");
+ printf("User %ld%%, System %ld%%, IOW %ld%%, IRQ %ld%%\n",
+ ((new_cpu.utime + new_cpu.ntime) - (old_cpu.utime + old_cpu.ntime)) * 100 / total_delta_time,
+ ((new_cpu.stime ) - (old_cpu.stime)) * 100 / total_delta_time,
+ ((new_cpu.iowtime) - (old_cpu.iowtime)) * 100 / total_delta_time,
+ ((new_cpu.irqtime + new_cpu.sirqtime)
+ - (old_cpu.irqtime + old_cpu.sirqtime)) * 100 / total_delta_time);
+ printf("User %ld + Nice %ld + Sys %ld + Idle %ld + IOW %ld + IRQ %ld + SIRQ %ld = %ld\n",
+ new_cpu.utime - old_cpu.utime,
+ new_cpu.ntime - old_cpu.ntime,
+ new_cpu.stime - old_cpu.stime,
+ new_cpu.itime - old_cpu.itime,
+ new_cpu.iowtime - old_cpu.iowtime,
+ new_cpu.irqtime - old_cpu.irqtime,
+ new_cpu.sirqtime - old_cpu.sirqtime,
+ total_delta_time);
+ printf("\n");
+ if (!threads)
+ printf("%5s %4s %1s %5s %7s %7s %-8s %s\n", "PID", "CPU%", "S", "#THR", "VSS", "RSS", "UID", "Name");
+ else
+ printf("%5s %5s %4s %1s %7s %7s %-8s %-15s %s\n", "PID", "TID", "CPU%", "S", "VSS", "RSS", "UID", "Thread", "Proc");
+
+ for (i = 0; i < num_new_procs; i++) {
+ proc = new_procs[i];
+
+ if (!proc || (max_procs && (i >= max_procs)))
+ break;
+ user = getpwuid(proc->uid);
+ group = getgrgid(proc->gid);
+ if (user && user->pw_name) {
+ user_str = user->pw_name;
+ } else {
+ snprintf(user_buf, 20, "%d", proc->uid);
+ user_str = user_buf;
+ }
+ if (group && group->gr_name) {
+ group_str = group->gr_name;
+ } else {
+ snprintf(group_buf, 20, "%d", proc->gid);
+ group_str = group_buf;
+ }
+ if (!threads)
+ printf("%5d %3ld%% %c %5d %6ldK %6ldK %-8.8s %s\n", proc->pid, proc->delta_time * 100 / total_delta_time, proc->state, proc->num_threads,
+ proc->vss / 1024, proc->rss * getpagesize() / 1024, user_str, proc->name[0] != 0 ? proc->name : proc->tname);
+ else
+ printf("%5d %5d %3ld%% %c %6ldK %6ldK %-8.8s %-15s %s\n", proc->pid, proc->tid, proc->delta_time * 100 / total_delta_time, proc->state,
+ proc->vss / 1024, proc->rss * getpagesize() / 1024, 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);
+}