ps.c
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/**
* Print thread information.
*
* Copyright (C) 2013, INRIA.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*
* @ingroup ps
* @{
* @file
* @brief UNIX like ps command
* @author Kaspar Schleiser <kaspar@schleiser.de>
* @}
*/
#include <stdio.h>
#include "thread.h"
#include "sched.h"
#include "thread.h"
#include "kernel_types.h"
#ifdef MODULE_SCHEDSTATISTICS
#include "xtimer.h"
#endif
#ifdef MODULE_TLSF
#include "tlsf.h"
#endif
/* 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",
[STATUS_FLAG_BLOCKED_ANY] = "bl anyfl",
[STATUS_FLAG_BLOCKED_ALL] = "bl allfl"
};
/**
* @brief Prints a list of running threads including stack usage to stdout.
*/
void ps(void)
{
const char queued_name[] = {'_', 'Q'};
#ifdef DEVELHELP
int overall_stacksz = 0, overall_used = 0;
#endif
printf("\tpid | "
#ifdef DEVELHELP
"%-21s| "
#endif
"%-9sQ | pri "
#ifdef DEVELHELP
"| stack ( used) | base | current "
#endif
#ifdef MODULE_SCHEDSTATISTICS
"| runtime | switches"
#endif
"\n",
#ifdef DEVELHELP
"name",
#endif
"state");
#ifdef DEVELHELP
int isr_usage = thread_arch_isr_stack_usage();
void *isr_start = thread_arch_isr_stack_start();
void *isr_sp = thread_arch_isr_stack_pointer();
printf("\t - | isr_stack | - - |"
" - | %5i (%5i) | %10p | %10p\n", ISR_STACKSIZE, isr_usage, isr_start, isr_sp);
overall_stacksz += ISR_STACKSIZE;
if (isr_usage > 0) {
overall_used += isr_usage;
}
#endif
for (kernel_pid_t i = KERNEL_PID_FIRST; i <= KERNEL_PID_LAST; i++) {
thread_t *p = (thread_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 */
#ifdef DEVELHELP
int stacksz = p->stack_size; /* get stack size */
overall_stacksz += stacksz;
stacksz -= thread_measure_stack_free(p->stack_start);
overall_used += stacksz;
#endif
#ifdef MODULE_SCHEDSTATISTICS
double runtime_ticks = sched_pidlist[i].runtime_ticks / (double) xtimer_now() * 100;
int switches = sched_pidlist[i].schedules;
#endif
printf("\t%3" PRIkernel_pid
#ifdef DEVELHELP
" | %-20s"
#endif
" | %-8s %.1s | %3i"
#ifdef DEVELHELP
" | %5i (%5i) | %10p | %10p "
#endif
#ifdef MODULE_SCHEDSTATISTICS
" | %6.3f%% | %8d"
#endif
"\n",
p->pid,
#ifdef DEVELHELP
p->name,
#endif
sname, queued, p->priority
#ifdef DEVELHELP
, p->stack_size, stacksz, (void *)p->stack_start, (void *)p->sp
#endif
#ifdef MODULE_SCHEDSTATISTICS
, runtime_ticks, switches
#endif
);
}
}
#ifdef DEVELHELP
printf("\t%5s %-21s|%13s%6s %5i (%5i)\n", "|", "SUM", "|", "|",
overall_stacksz, overall_used);
# ifdef MODULE_TLSF
puts("\nHeap usage:");
tlsf_walk_pool(NULL);
# endif
#endif
}