예제 #1
0
int main(int argc, char *argv[]) {
        int r;
        Hashmap *a = NULL, *b = NULL;
        unsigned iteration = 0;
        usec_t last_refresh = 0;
        bool quit = false, immediate_refresh = false;
        _cleanup_free_ char *root = NULL;
        CGroupMask mask;

        log_parse_environment();
        log_open();

        r = cg_mask_supported(&mask);
        if (r < 0) {
                log_error_errno(r, "Failed to determine supported controllers: %m");
                goto finish;
        }

        arg_count = (mask & CGROUP_MASK_PIDS) ? COUNT_PIDS : COUNT_USERSPACE_PROCESSES;

        r = parse_argv(argc, argv);
        if (r <= 0)
                goto finish;

        r = get_cgroup_root(&root);
        if (r < 0) {
                log_error_errno(r, "Failed to get root control group path: %m");
                goto finish;
        }

        a = hashmap_new(&string_hash_ops);
        b = hashmap_new(&string_hash_ops);
        if (!a || !b) {
                r = log_oom();
                goto finish;
        }

        signal(SIGWINCH, columns_lines_cache_reset);

        if (arg_iterations == (unsigned) -1)
                arg_iterations = on_tty() ? 0 : 1;

        while (!quit) {
                Hashmap *c;
                usec_t t;
                char key;
                char h[FORMAT_TIMESPAN_MAX];

                t = now(CLOCK_MONOTONIC);

                if (t >= last_refresh + arg_delay || immediate_refresh) {

                        r = refresh(root, a, b, iteration++);
                        if (r < 0) {
                                log_error_errno(r, "Failed to refresh: %m");
                                goto finish;
                        }

                        group_hashmap_clear(b);

                        c = a;
                        a = b;
                        b = c;

                        last_refresh = t;
                        immediate_refresh = false;
                }

                display(b);

                if (arg_iterations && iteration >= arg_iterations)
                        break;

                if (!on_tty()) /* non-TTY: Empty newline as delimiter between polls */
                        fputs("\n", stdout);
                fflush(stdout);

                if (arg_batch)
                        (void) usleep(last_refresh + arg_delay - t);
                else {
                        r = read_one_char(stdin, &key, last_refresh + arg_delay - t, NULL);
                        if (r == -ETIMEDOUT)
                                continue;
                        if (r < 0) {
                                log_error_errno(r, "Couldn't read key: %m");
                                goto finish;
                        }
                }

                if (on_tty()) { /* TTY: Clear any user keystroke */
                        fputs("\r \r", stdout);
                        fflush(stdout);
                }

                if (arg_batch)
                        continue;

                switch (key) {

                case ' ':
                        immediate_refresh = true;
                        break;

                case 'q':
                        quit = true;
                        break;

                case 'p':
                        arg_order = ORDER_PATH;
                        break;

                case 't':
                        arg_order = ORDER_TASKS;
                        break;

                case 'c':
                        arg_order = ORDER_CPU;
                        break;

                case 'm':
                        arg_order = ORDER_MEMORY;
                        break;

                case 'i':
                        arg_order = ORDER_IO;
                        break;

                case '%':
                        arg_cpu_type = arg_cpu_type == CPU_TIME ? CPU_PERCENT : CPU_TIME;
                        break;

                case 'k':
                        arg_count = arg_count != COUNT_ALL_PROCESSES ? COUNT_ALL_PROCESSES : COUNT_PIDS;
                        fprintf(stdout, "\nCounting: %s.", counting_what());
                        fflush(stdout);
                        sleep(1);
                        break;

                case 'P':
                        arg_count = arg_count != COUNT_USERSPACE_PROCESSES ? COUNT_USERSPACE_PROCESSES : COUNT_PIDS;
                        fprintf(stdout, "\nCounting: %s.", counting_what());
                        fflush(stdout);
                        sleep(1);
                        break;

                case 'r':
                        if (arg_count == COUNT_PIDS)
                                fprintf(stdout, "\n\aCannot toggle recursive counting, not available in task counting mode.");
                        else {
                                arg_recursive = !arg_recursive;
                                fprintf(stdout, "\nRecursive process counting: %s", yes_no(arg_recursive));
                        }
                        fflush(stdout);
                        sleep(1);
                        break;

                case '+':
                        if (arg_delay < USEC_PER_SEC)
                                arg_delay += USEC_PER_MSEC*250;
                        else
                                arg_delay += USEC_PER_SEC;

                        fprintf(stdout, "\nIncreased delay to %s.", format_timespan(h, sizeof(h), arg_delay, 0));
                        fflush(stdout);
                        sleep(1);
                        break;

                case '-':
                        if (arg_delay <= USEC_PER_MSEC*500)
                                arg_delay = USEC_PER_MSEC*250;
                        else if (arg_delay < USEC_PER_MSEC*1250)
                                arg_delay -= USEC_PER_MSEC*250;
                        else
                                arg_delay -= USEC_PER_SEC;

                        fprintf(stdout, "\nDecreased delay to %s.", format_timespan(h, sizeof(h), arg_delay, 0));
                        fflush(stdout);
                        sleep(1);
                        break;

                case '?':
                case 'h':

#define ON ANSI_HIGHLIGHT
#define OFF ANSI_NORMAL

                        fprintf(stdout,
                                "\t<" ON "p" OFF "> By path; <" ON "t" OFF "> By tasks/procs; <" ON "c" OFF "> By CPU; <" ON "m" OFF "> By memory; <" ON "i" OFF "> By I/O\n"
                                "\t<" ON "+" OFF "> Inc. delay; <" ON "-" OFF "> Dec. delay; <" ON "%%" OFF "> Toggle time; <" ON "SPACE" OFF "> Refresh\n"
                                "\t<" ON "P" OFF "> Toggle count userspace processes; <" ON "k" OFF "> Toggle count all processes\n"
                                "\t<" ON "r" OFF "> Count processes recursively; <" ON "q" OFF "> Quit");
                        fflush(stdout);
                        sleep(3);
                        break;

                default:
                        if (key < ' ')
                                fprintf(stdout, "\nUnknown key '\\x%x'. Ignoring.", key);
                        else
                                fprintf(stdout, "\nUnknown key '%c'. Ignoring.", key);
                        fflush(stdout);
                        sleep(1);
                        break;
                }
        }

        r = 0;

finish:
        group_hashmap_free(a);
        group_hashmap_free(b);

        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
예제 #2
0
파일: cgtop.c 프로젝트: g33s3/systemmd
int main(int argc, char *argv[]) {
        int r;
        Hashmap *a = NULL, *b = NULL;
        unsigned iteration = 0;
        usec_t last_refresh = 0;
        bool quit = false, immediate_refresh = false;

        log_parse_environment();
        log_open();

        r = parse_argv(argc, argv);
        if (r <= 0)
                goto finish;

        a = hashmap_new(string_hash_func, string_compare_func);
        b = hashmap_new(string_hash_func, string_compare_func);
        if (!a || !b) {
                r = log_oom();
                goto finish;
        }

        signal(SIGWINCH, columns_lines_cache_reset);

        if (!on_tty())
                arg_iterations = 1;

        while (!quit) {
                Hashmap *c;
                usec_t t;
                char key;
                char h[FORMAT_TIMESPAN_MAX];

                t = now(CLOCK_MONOTONIC);

                if (t >= last_refresh + arg_delay || immediate_refresh) {

                        r = refresh(a, b, iteration++);
                        if (r < 0)
                                goto finish;

                        group_hashmap_clear(b);

                        c = a;
                        a = b;
                        b = c;

                        last_refresh = t;
                        immediate_refresh = false;
                }

                r = display(b);
                if (r < 0)
                        goto finish;

                if (arg_iterations && iteration >= arg_iterations)
                        break;

                if (arg_batch) {
                        usleep(last_refresh + arg_delay - t);
                } else {
                        r = read_one_char(stdin, &key,
                                          last_refresh + arg_delay - t, NULL);
                        if (r == -ETIMEDOUT)
                                continue;
                        if (r < 0) {
                                log_error("Couldn't read key: %s", strerror(-r));
                                goto finish;
                        }
                }

                fputs("\r \r", stdout);
                fflush(stdout);

                if (arg_batch)
                        continue;

                switch (key) {

                case ' ':
                        immediate_refresh = true;
                        break;

                case 'q':
                        quit = true;
                        break;

                case 'p':
                        arg_order = ORDER_PATH;
                        break;

                case 't':
                        arg_order = ORDER_TASKS;
                        break;

                case 'c':
                        arg_order = ORDER_CPU;
                        break;

                case 'm':
                        arg_order = ORDER_MEMORY;
                        break;

                case 'i':
                        arg_order = ORDER_IO;
                        break;

                case '%':
                        arg_cpu_type = arg_cpu_type == CPU_TIME ? CPU_PERCENT : CPU_TIME;
                        break;

                case '+':
                        if (arg_delay < USEC_PER_SEC)
                                arg_delay += USEC_PER_MSEC*250;
                        else
                                arg_delay += USEC_PER_SEC;

                        fprintf(stdout, "\nIncreased delay to %s.", format_timespan(h, sizeof(h), arg_delay, 0));
                        fflush(stdout);
                        sleep(1);
                        break;

                case '-':
                        if (arg_delay <= USEC_PER_MSEC*500)
                                arg_delay = USEC_PER_MSEC*250;
                        else if (arg_delay < USEC_PER_MSEC*1250)
                                arg_delay -= USEC_PER_MSEC*250;
                        else
                                arg_delay -= USEC_PER_SEC;

                        fprintf(stdout, "\nDecreased delay to %s.", format_timespan(h, sizeof(h), arg_delay, 0));
                        fflush(stdout);
                        sleep(1);
                        break;

                case '?':
                case 'h':
                        fprintf(stdout,
                                "\t<" ON "p" OFF "> By path; <" ON "t" OFF "> By tasks; <" ON "c" OFF "> By CPU; <" ON "m" OFF "> By memory; <" ON "i" OFF "> By I/O\n"
                                "\t<" ON "+" OFF "> Increase delay; <" ON "-" OFF "> Decrease delay; <" ON "%%" OFF "> Toggle time\n"
                                "\t<" ON "q" OFF "> Quit; <" ON "SPACE" OFF "> Refresh");
                        fflush(stdout);
                        sleep(3);
                        break;

                default:
                        fprintf(stdout, "\nUnknown key '%c'. Ignoring.", key);
                        fflush(stdout);
                        sleep(1);
                        break;
                }
        }

        r = 0;

finish:
        group_hashmap_free(a);
        group_hashmap_free(b);

        if (r < 0) {
                log_error("Exiting with failure: %s", strerror(-r));
                return EXIT_FAILURE;
        }

        return EXIT_SUCCESS;
}