diff options
Diffstat (limited to 'apps/systemcmds/top/top.c')
-rw-r--r-- | apps/systemcmds/top/top.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/apps/systemcmds/top/top.c b/apps/systemcmds/top/top.c new file mode 100644 index 000000000..af1bb23d9 --- /dev/null +++ b/apps/systemcmds/top/top.c @@ -0,0 +1,245 @@ +/**************************************************************************** + * apps/reboot.c + * + * Copyright (C) 2012 Lorenz Meier. All rights reserved. + * Author: Lorenz Meier <lm@inf.ethz.ch> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "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 + * COPYRIGHT OWNER OR CONTRIBUTORS 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + + +#include <nuttx/config.h> +#include <stdio.h> +#include <fcntl.h> +#include <stdbool.h> +#include <unistd.h> +#include <string.h> +#include <poll.h> + +#include <arch/board/up_cpuload.h> +#include <arch/board/up_hrt.h> + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +__EXPORT int top_main(int argc, char *argv[]); + +/**************************************************************************** + * user_start + ****************************************************************************/ + +extern struct system_load_s system_load; + +bool top_sigusr1_rcvd = false; + +int top_main(int argc, char *argv[]) +{ + int t; + + uint64_t total_user_time = 0; + + int running_count = 0; + int blocked_count = 0; + + uint64_t new_time = hrt_absolute_time(); + uint64_t interval_start_time = new_time; + + uint64_t last_times[CONFIG_MAX_TASKS]; + float curr_loads[CONFIG_MAX_TASKS]; + + for (t = 0; t < CONFIG_MAX_TASKS; t++) + last_times[t] = 0; + + float interval_time_ms_inv = 0.f; + + /* Open console directly to grab CTRL-C signal */ + int console = open("/dev/console", O_NONBLOCK | O_RDONLY | O_NOCTTY); + + while (true) +// for (t = 0; t < 10; t++) + { + int i; + + uint64_t curr_time_ms = (hrt_absolute_time() / 1000LLU); + unsigned int curr_time_s = curr_time_ms / 1000LLU; + + uint64_t idle_time_total_ms = (system_load.tasks[0].total_runtime / 1000LLU); + unsigned int idle_time_total_s = idle_time_total_ms / 1000LLU; + + if (new_time > interval_start_time) + interval_time_ms_inv = 1.f / ((float)((new_time - interval_start_time) / 1000)); + + running_count = 0; + blocked_count = 0; + total_user_time = 0; + + for (i = 0; i < CONFIG_MAX_TASKS; i++) { + uint64_t interval_runtime = (system_load.tasks[i].valid && last_times[i] > 0 && system_load.tasks[i].total_runtime > last_times[i]) ? (system_load.tasks[i].total_runtime - last_times[i]) / 1000 : 0; + + last_times[i] = system_load.tasks[i].total_runtime; + + if (system_load.tasks[i].valid && (new_time > interval_start_time)) { + curr_loads[i] = interval_runtime * interval_time_ms_inv; + + if (i > 0) + total_user_time += interval_runtime; + + } else + curr_loads[i] = 0; + } + + for (i = 0; i < CONFIG_MAX_TASKS; i++) { + if (system_load.tasks[i].valid && (new_time > interval_start_time)) { + if (system_load.tasks[i].tcb->pid == 0) { + float idle = curr_loads[0]; + float task_load = (float)(total_user_time) * interval_time_ms_inv; + + if (task_load > (1.f - idle)) task_load = (1.f - idle); /* this can happen if one tasks total runtime was not computed correctly by the scheduler instrumentation TODO */ + + float sched_load = 1.f - idle - task_load; + + /* print system information */ + printf("\033[H"); /* cursor home */ + printf("\033[KProcesses: %d total, %d running, %d sleeping\n", system_load.total_count, running_count, blocked_count); + printf("\033[KCPU usage: %d.%02d%% tasks, %d.%02d%% sched, %d.%02d%% idle\n", (int)(task_load * 100), (int)((task_load * 10000.0f) - (int)(task_load * 100.0f) * 100), (int)(sched_load * 100), (int)((sched_load * 10000.0f) - (int)(sched_load * 100.0f) * 100), (int)(idle * 100), (int)((idle * 10000.0f) - ((int)(idle * 100)) * 100)); + printf("\033[KUptime: %u.%03u s total, %d.%03d s idle\n\033[K\n", curr_time_s, (unsigned int)(curr_time_ms - curr_time_s * 1000LLU), idle_time_total_s, (int)(idle_time_total_ms - idle_time_total_s * 1000)); + + /* 34 chars command name length (32 chars plus two spaces) */ + char header_spaces[CONFIG_TASK_NAME_SIZE + 1]; + memset(header_spaces, ' ', CONFIG_TASK_NAME_SIZE); + header_spaces[CONFIG_TASK_NAME_SIZE] = '\0'; +#if CONFIG_RR_INTERVAL > 0 + printf("\033[KPID\tCOMMAND%s CPU TOTAL \t%%CPU CURR \tMIN STACK USE\tCURR (BASE) PRIO\tRR SLICE\n", header_spaces); +#else + printf("\033[KPID\tCOMMAND%s CPU TOTAL \t%%CPU CURR \tMIN STACK USE\tCURR (BASE) PRIO\n", header_spaces); +#endif + + } else { + enum tstate_e task_state = (enum tstate_e)system_load.tasks[i].tcb->task_state; + + if (task_state == TSTATE_TASK_PENDING || + task_state == TSTATE_TASK_READYTORUN || + task_state == TSTATE_TASK_RUNNING) { + running_count++; + } + + if (task_state == TSTATE_TASK_INACTIVE || /* BLOCKED - Initialized but not yet activated */ + task_state == TSTATE_WAIT_SEM /* BLOCKED - Waiting for a semaphore */ +#ifndef CONFIG_DISABLE_SIGNALS + || task_state == TSTATE_WAIT_SIG /* BLOCKED - Waiting for a signal */ +#endif +#ifndef CONFIG_DISABLE_MQUEUE + || task_state == TSTATE_WAIT_MQNOTEMPTY /* BLOCKED - Waiting for a MQ to become not empty. */ + || task_state == TSTATE_WAIT_MQNOTFULL /* BLOCKED - Waiting for a MQ to become not full. */ +#endif +#ifdef CONFIG_PAGING + || task_state == TSTATE_WAIT_PAGEFILL /* BLOCKED - Waiting for page fill */ +#endif + ) { + blocked_count++; + } + + char spaces[CONFIG_TASK_NAME_SIZE + 2]; + + /* count name len */ + int namelen = 0; + + while (namelen < CONFIG_TASK_NAME_SIZE) { + if (system_load.tasks[i].tcb->name[namelen] == '\0') break; + + namelen++; + } + + int s = 0; + + for (s = 0; s < CONFIG_TASK_NAME_SIZE + 2 - namelen; s++) { + spaces[s] = ' '; + } + + spaces[s] = '\0'; + + char *runtime_spaces = " "; + + if ((system_load.tasks[i].total_runtime / 1000) < 99) { + runtime_spaces = ""; + } + + printf("\033[K % 2d\t%s%s\t% 8lld ms%s \t % 2d.%03d \t % 6d B", (int)system_load.tasks[i].tcb->pid, system_load.tasks[i].tcb->name, spaces, (system_load.tasks[i].total_runtime / 1000), runtime_spaces, (int)(curr_loads[i] * 100), (int)(curr_loads[i] * 100000.0f - (int)(curr_loads[i] * 1000.0f) * 100), (uint32_t)system_load.tasks[i].tcb->adj_stack_ptr - (uint32_t)system_load.tasks[i].tcb->xcp.regs[REG_R13]); + /* Print scheduling info with RR time slice */ +#if CONFIG_RR_INTERVAL > 0 + printf("\t%d\t(%d)\t\t%d\n", (int)system_load.tasks[i].tcb->sched_priority, (int)system_load.tasks[i].tcb->base_priority, (int)system_load.tasks[i].tcb->timeslice); +#else + /* Print scheduling info without time slice*/ + printf("\t%d (%d)\n", (int)system_load.tasks[i].tcb->sched_priority, (int)system_load.tasks[i].tcb->base_priority); +#endif + } + } + } + + printf("\033[K[ Hit Ctrl-C to quit. ]\n\033[J"); + fflush(stdout); + + interval_start_time = new_time; + + char c; + + /* Sleep 200 ms waiting for user input four times */ + /* XXX use poll ... */ + for (int k = 0; k < 4; k++) { + if (read(console, &c, 1) == 1) { + if (c == 0x03 || c == 0x63) { + printf("Abort\n"); + close(console); + return OK; + } + } + + usleep(200000); + } + + new_time = hrt_absolute_time(); + } + + close(console); + + return OK; +} |