/**
 * Print thread information.
 *
 * Copyright (C) 2013, INRIA.
 *
 * This file is subject to the terms and conditions of the GNU Lesser General
 * Public License. See the file LICENSE in the top level directory for more
 * details.
 *
 * @ingroup ps
 * @{
 * @file    ps.c
 * @brief   UNIX like ps command
 * @author  Kaspar Schleiser <kaspar@schleiser.de>
 * @}
 */

#include <stdio.h>

#include "thread.h"
#include "hwtimer.h"
#include "sched.h"
#include "tcb.h"

/* list of states copied from tcb.h */
const char *state_names[] = {
    [STATUS_RUNNING] = "running",
    [STATUS_PENDING] = "pending",
    [STATUS_STOPPED] = "stopped",
    [STATUS_SLEEPING] = "sleeping",
    [STATUS_MUTEX_BLOCKED] = "bl mutex",
    [STATUS_RECEIVE_BLOCKED] = "bl rx",
    [STATUS_SEND_BLOCKED] = "bl send",
    [STATUS_REPLY_BLOCKED] = "bl reply"
};

/**
 * @brief Prints a list of running threads including stack usage to stdout.
 */
void thread_print_all(void)
{
    const char queued_name[] = {'_', 'Q'};
    int i;
    int overall_stacksz = 0;

    printf("\tpid | %-21s| %-9sQ | pri | stack ( used) location"
#if SCHEDSTATISTICS
           "  | runtime | switches"
#endif
           "\n"
           , "name", "state");

    for (i = 0; i < MAXTHREADS; i++) {
        tcb_t *p = (tcb_t *)sched_threads[i];

        if (p != NULL) {
            int state = p->status;                                                 /* copy state */
            const char *sname = state_names[state];                                /* get state name */
            const char *queued = &queued_name[(int)(state >= STATUS_ON_RUNQUEUE)]; /* get queued flag */
            int stacksz = p->stack_size;                                           /* get stack size */
#if SCHEDSTATISTICS
            int runtime_ticks = sched_pidlist[i].runtime_ticks / (hwtimer_now()/1000UL + 1);
            int switches = sched_pidlist[i].schedules;
#endif
            overall_stacksz += stacksz;
            stacksz -= thread_measure_stack_free(p->stack_start);
            printf("\t%3u | %-21s| %-8s %.1s | %3i | %5i (%5i) %p"
#if SCHEDSTATISTICS
                   " | %4d/1k |  %8d"
#endif
                   "\n",
                   p->pid, p->name, sname, queued, p->priority, p->stack_size, stacksz, p->stack_start
#if SCHEDSTATISTICS
                   , runtime_ticks, switches
#endif
                  );
        }
    }

    printf("\t%5s %-21s|%13s%6s %5i\n", "|", "SUM", "|", "|", overall_stacksz);
}