source: mainline/uspace/app/tasks/tasks.c@ e535eeb

/*
 * Copyright (c) 2010 Stanislav Kozina
 * Copyright (c) 2010 Martin Decky
 * 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/** @addtogroup tasks
 * @brief Task lister.
 * @{
 */
/**
 * @file
 */

#include <stdio.h>
#include <task.h>
#include <thread.h>
#include <stats.h>
#include <errno.h>
#include <stdlib.h>
#include <malloc.h>
#include <inttypes.h>
#include <bool.h>
#include <str.h>
#include <arg_parse.h>

#define NAME  "tasks"

#define TASK_COUNT    10
#define THREAD_COUNT  50

#define PRINT_LOAD1(x)  ((x) >> 11)
#define PRINT_LOAD2(x)  (((x) & 0x7ff) / 2)

static void list_tasks(void)
{
        size_t count;
        task_id_t *ids =
            (task_id_t *) stats_get_tasks(&count);
        
        if (ids == NULL) {
                fprintf(stderr, "%s: Unable to get tasks\n", NAME);
                return;
        }
        
        printf("      ID  Threads      Mem       uCycles       kCycles   Name\n");
        
        size_t i;
        for (i = 0; i < count; i++) {
                stats_task_t *stats_task = stats_get_task(ids[i]);
                if (stats_task != NULL) {
                        uint64_t virtmem, ucycles, kcycles;
                        char vmsuffix, usuffix, ksuffix;
                        
                        order_suffix(stats_task->virtmem, &virtmem, &vmsuffix);
                        order_suffix(stats_task->ucycles, &ucycles, &usuffix);
                        order_suffix(stats_task->kcycles, &kcycles, &ksuffix);
                        
                        printf("%8" PRIu64 "%8u %8" PRIu64"%c %12"
                            PRIu64 "%c %12" PRIu64 "%c %s\n", ids[i], stats_task->threads,
                            virtmem, vmsuffix, ucycles, usuffix, kcycles, ksuffix,
                            stats_task->name);
                        
                        free(stats_task);
                } else
                        printf("%8" PRIu64 "\n", ids[i]);
        }
        
        free(ids);
}

static void list_threads(task_id_t task_id, bool all)
{
        size_t count;
        thread_id_t *ids =
            (thread_id_t *) stats_get_threads(&count);
        
        if (ids == NULL) {
                fprintf(stderr, "%s: Unable to get threads\n", NAME);
                return;
        }
        
        printf("    ID    State  CPU   Prio    [k]uCycles    [k]kcycles   Cycle fault\n");
        size_t i;
        for (i = 0; i < count; i++) {
                stats_thread_t *stats_thread = stats_get_thread(ids[i]);
                if (stats_thread != NULL) {
                        if ((all) || (stats_thread->task_id == task_id)) {
                                uint64_t ucycles, kcycles;
                                char usuffix, ksuffix;
                                
                                order_suffix(stats_thread->ucycles, &ucycles, &usuffix);
                                order_suffix(stats_thread->kcycles, &kcycles, &ksuffix);
                                
                                if (stats_thread->on_cpu) {
                                        printf("%8" PRIu64 " %-8s %4u %6d %12"
                                            PRIu64"%c %12" PRIu64"%c\n", ids[i],
                                            thread_get_state(stats_thread->state),
                                            stats_thread->cpu, stats_thread->priority,
                                            ucycles, usuffix, kcycles, ksuffix);
                                } else {
                                        printf("%8" PRIu64 " %-8s ---- %6d %12"
                                            PRIu64"%c %12" PRIu64"%c\n", ids[i],
                                            thread_get_state(stats_thread->state),
                                            stats_thread->priority,
                                            ucycles, usuffix, kcycles, ksuffix);
                                }
                        }
                        
                        free(stats_thread);
                } else if (all)
                        printf("%8" PRIu64 "\n", ids[i]);
        }
        
        free(ids);
}

static void print_load(void)
{
        size_t count;
        load_t *load = stats_get_load(&count);
        
        if (load == NULL) {
                fprintf(stderr, "%s: Unable to get load\n", NAME);
                return;
        }
        
        printf("%s: Load avarage: ", NAME);
        
        size_t i;
        for (i = 0; i < count; i++) {
                if (i > 0)
                        printf(" ");
                
                stats_print_load_fragment(load[i], 2);
        }
        
        printf("\n");
        
        free(load);
}

static void list_cpus(void)
{
        size_t count;
        stats_cpu_t *cpus = stats_get_cpus(&count);
        
        if (cpus == NULL) {
                fprintf(stderr, "%s: Unable to get CPU statistics\n", NAME);
                return;
        }
        
        printf("%s: %u CPU(s) detected\n", NAME, count);
        
        size_t i;
        for (i = 0; i < count; i++) {
                printf("cpu%u: %" PRIu16 " MHz, busy ticks: "
                    "%" PRIu64 ", idle ticks: %" PRIu64 "\n",
                    cpus[i].id, cpus[i].frequency_mhz, cpus[i].busy_ticks,
                    cpus[i].idle_ticks);
        }
        
        free(cpus);
}

static void usage()
{
        printf(
            "Usage: tasks [-t task_id] [-a] [-l] [-c]\n" \
            "\n" \
            "Options:\n" \
            "\t-t task_id\n" \
            "\t--task=task_id\n" \
            "\t\tList threads of the given task\n" \
            "\n" \
            "\t-a\n" \
            "\t--all\n" \
            "\t\tList all threads\n" \
            "\n" \
            "\t-l\n" \
            "\t--load\n" \
            "\t\tPrint system load\n" \
            "\n" \
            "\t-c\n" \
            "\t--cpu\n" \
            "\t\tList CPUs\n" \
            "\n" \
            "\t-h\n" \
            "\t--help\n" \
            "\t\tPrint this usage information\n"
            "\n" \
            "Without any options all tasks are listed\n"
        );
}

int main(int argc, char *argv[])
{
        bool toggle_tasks = true;
        bool toggle_threads = false;
        bool toggle_all = false;
        bool toggle_load = false;
        bool toggle_cpus = false;
        
        task_id_t task_id = 0;
        
        int i;
        for (i = 1; i < argc; i++) {
                int off;
                
                /* Usage */
                if ((off = arg_parse_short_long(argv[i], "-h", "--help")) != -1) {
                        usage();
                        return 0;
                }
                
                /* All threads */
                if ((off = arg_parse_short_long(argv[i], "-a", "--all")) != -1) {
                        toggle_tasks = false;
                        toggle_threads = true;
                        toggle_all = true;
                        continue;
                }
                
                /* Load */
                if ((off = arg_parse_short_long(argv[i], "-l", "--load")) != -1) {
                        toggle_tasks = false;
                        toggle_load = true;
                        continue;
                }
                
                /* CPUs */
                if ((off = arg_parse_short_long(argv[i], "-c", "--cpus")) != -1) {
                        toggle_tasks = false;
                        toggle_cpus = true;
                        continue;
                }
                
                /* Threads */
                if ((off = arg_parse_short_long(argv[i], "-t", "--task=")) != -1) {
                        // TODO: Support for 64b range
                        int tmp;
                        int ret = arg_parse_int(argc, argv, &i, &tmp, off);
                        if (ret != EOK) {
                                printf("%s: Malformed task_id '%s'\n", NAME, argv[i]);
                                return -1;
                        }
                        
                        task_id = tmp;
                        
                        toggle_tasks = false;
                        toggle_threads = true;
                        continue;
                }
        }
        
        if (toggle_tasks)
                list_tasks();
        
        if (toggle_threads)
                list_threads(task_id, toggle_all);
        
        if (toggle_load)
                print_load();
        
        if (toggle_cpus)
                list_cpus();
        
        return 0;
}

/** @}
 */