source: mainline/uspace/app/tasks/tasks.c@ 80badbe

/*
 * 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;
        stats_task_t *stats_tasks = stats_get_tasks(&count);
        
        if (stats_tasks == 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++) {
                uint64_t virtmem, ucycles, kcycles;
                char vmsuffix, usuffix, ksuffix;
                
                order_suffix(stats_tasks[i].virtmem, &virtmem, &vmsuffix);
                order_suffix(stats_tasks[i].ucycles, &ucycles, &usuffix);
                order_suffix(stats_tasks[i].kcycles, &kcycles, &ksuffix);
                
                printf("%8" PRIu64 "%8u %8" PRIu64"%c %12"
                    PRIu64 "%c %12" PRIu64 "%c %s\n", stats_tasks[i].task_id,
                    stats_tasks[i].threads, virtmem, vmsuffix, ucycles, usuffix,
                    kcycles, ksuffix, stats_tasks[i].name);
        }
        
        free(stats_tasks);
}

static void list_threads(task_id_t task_id, bool all)
{
        size_t count;
        stats_thread_t *stats_threads = stats_get_threads(&count);
        
        if (stats_threads == 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++) {
                if ((all) || (stats_threads[i].task_id == task_id)) {
                        uint64_t ucycles, kcycles;
                        char usuffix, ksuffix;
                        
                        order_suffix(stats_threads[i].ucycles, &ucycles, &usuffix);
                        order_suffix(stats_threads[i].kcycles, &kcycles, &ksuffix);
                        
                        if (stats_threads[i].on_cpu) {
                                printf("%8" PRIu64 " %-8s %4u %6d %12"
                                    PRIu64"%c %12" PRIu64"%c\n", stats_threads[i].thread_id,
                                    thread_get_state(stats_threads[i].state),
                                    stats_threads[i].cpu, stats_threads[i].priority,
                                    ucycles, usuffix, kcycles, ksuffix);
                        } else {
                                printf("%8" PRIu64 " %-8s ---- %6d %12"
                                    PRIu64"%c %12" PRIu64"%c\n", stats_threads[i].thread_id,
                                    thread_get_state(stats_threads[i].state),
                                    stats_threads[i].priority,
                                    ucycles, usuffix, kcycles, ksuffix);
                        }
                }
        }
        
        free(stats_threads);
}

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 average: ", 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++) {
                if (cpus[i].active) {
                        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);
                } else {
                        printf("cpu%u: inactive\n", cpus[i].id);
                }
        }
        
        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;
}

/** @}
 */