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sys/shell: Add nice shell command via module nice

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This commit is contained in:
Marian Buschsieweke 2021-11-01 12:41:38 +01:00
parent 3d7d797a57
commit ed9bf358c5
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GPG Key ID: CB8E3238CE715A94
4 changed files with 64 additions and 0 deletions
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1
makefiles/pseudomodules.inc.mk
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@ -108,6 +108,7 @@ PSEUDOMODULES += nimble_autoconn_%
PSEUDOMODULES += newlib
PSEUDOMODULES += newlib_gnu_source
PSEUDOMODULES += newlib_nano
PSEUDOMODULES += nice
PSEUDOMODULES += nrf24l01p_ng_diagnostics
PSEUDOMODULES += openthread
PSEUDOMODULES += picolibc

3
sys/shell/commands/Makefile
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@ -14,6 +14,9 @@ endif
ifneq (,$(filter mci,$(USEMODULE)))
SRC += sc_disk.c
endif
ifneq (,$(filter nice,$(USEMODULE)))
SRC += sc_nice.c
endif
ifneq (,$(filter periph_pm,$(USEMODULE)))
SRC += sc_pm.c
endif

53
sys/shell/commands/sc_nice.c Normal file
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@ -0,0 +1,53 @@
/*
* Copyright (C) 2021 Otto-von-Guericke-Universität Magdeburg
*
* 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 sys_shell_commands
* @{
*
* @file
* @brief A shell command to change the niceness (inverse priority) of a thread
*
* @note Enable this by using the modules shell_commands and nice
*
* @author Marian Buschsieweke <marian.buschsieweke@ovgu.de>
*
* @}
*/
#include <stdio.h>
#include <stdlib.h>
#include "sched.h"
#include "thread.h"
int _sc_nice(int argc, char **argv)
{
if (argc != 3) {
printf("Usage: %s <THREAD_ID> <PRIORITY>\n"
"Note: Lower number means higher priority (niceness)\n",
argv[0]);
return EXIT_FAILURE;
}
/* Note: thread_get() does bounds checking and returns NULL on out of bounds PID */
thread_t *thread = thread_get(atoi(argv[1]));
if (!thread) {
printf("No active thread found for ID \"%s\"\n", argv[1]);
return EXIT_FAILURE;
}
uint8_t prio = atoi(argv[2]);
if (prio >= SCHED_PRIO_LEVELS) {
printf("Priority \"%s\" is invalid (try 0..%u)\n",
argv[2], (unsigned)SCHED_PRIO_LEVELS - 1);
}
sched_change_priority(thread, prio);
return EXIT_SUCCESS;
}

7
sys/shell/commands/shell_commands.c
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@ -187,6 +187,10 @@ extern int _i2c_scan(int argc, char **argv);
extern int _loramac_handler(int argc, char **argv);
#endif
#ifdef MODULE_NICE
extern int _sc_nice(int argc, char **argv);
#endif
#ifdef MODULE_NIMBLE_NETIF
extern int _nimble_netif_handler(int argc, char **argv);
#endif
@ -263,6 +267,9 @@ const shell_command_t _shell_command_list[] = {
#ifdef MODULE_GNRC_IPV6_NIB
{"nib", "Configure neighbor information base", _gnrc_ipv6_nib},
#endif
#ifdef MODULE_NICE
{"nice", "Change priority of an active thread", _sc_nice},
#endif
#ifdef MODULE_NETSTATS_NEIGHBOR
{"neigh", "Show neighbor statistics", _netstats_nb},
#endif