49866a8fe4
through syslog. Errors should have LOG_ERR instead of LOG_INFO. Signed-off-by: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>
799 lines
28 KiB
C
799 lines
28 KiB
C
/************************************************************************************
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* apps/system/note/note_main.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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************************************************************************************/
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <syslog.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <nuttx/sched_note.h>
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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#ifdef CONFIG_SCHED_INSTRUMENTATION_HIRES
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# define syslog_time(priority, fmt, ...) \
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syslog(priority, "%08lx.%08lx: " fmt, \
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(unsigned long)systime_sec, (unsigned long)systime_nsec, \
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__VA_ARGS__)
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#else
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# define syslog_time(priority, fmt, ...) \
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syslog(priority, "%08lx: " fmt, \
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(unsigned long)systime, \
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__VA_ARGS__)
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#endif
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/************************************************************************************
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* Private Data
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************************************************************************************/
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static bool g_note_daemon_started;
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static uint8_t g_note_buffer[CONFIG_SYSTEM_NOTE_BUFFERSIZE];
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/* Names of task/thread states */
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static FAR const char *g_statenames[] =
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{
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"Invalid",
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"Waiting for Unlock",
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"Ready",
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"Running",
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"Inactive",
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"Waiting for Semaphore",
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"Waiting for Signal",
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#ifndef CONFIG_DISABLE_MQUEUE
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"Waiting for MQ empty",
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"Waiting for MQ full"
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#endif
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};
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#define NSTATES (sizeof(g_statenames)/sizeof(FAR const char *))
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/************************************************************************************
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* Private Functions
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************************************************************************************/
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/************************************************************************************
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* Name: dump_notes
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************************************************************************************/
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static void dump_notes(size_t nread)
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{
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FAR struct note_common_s *note;
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#ifdef CONFIG_SCHED_INSTRUMENTATION_HIRES
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uint32_t systime_sec;
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uint32_t systime_nsec;
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#else
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uint32_t systime;
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#endif
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pid_t pid;
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off_t offset;
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offset = 0;
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while (offset < nread)
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{
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note = (FAR struct note_common_s *)&g_note_buffer[offset];
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pid = (pid_t)note->nc_pid[0] +
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((pid_t)note->nc_pid[1] << 8);
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#ifdef CONFIG_SCHED_INSTRUMENTATION_HIRES
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systime_nsec = (uint32_t)note->nc_systime_nsec[0] +
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(uint32_t)(note->nc_systime_nsec[1] << 8) +
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(uint32_t)(note->nc_systime_nsec[2] << 16) +
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(uint32_t)(note->nc_systime_nsec[3] << 24);
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systime_sec = (uint32_t)note->nc_systime_sec[0] +
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(uint32_t)(note->nc_systime_sec[1] << 8) +
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(uint32_t)(note->nc_systime_sec[2] << 16) +
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(uint32_t)(note->nc_systime_sec[3] << 24);
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#else
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systime = (uint32_t) note->nc_systime[0] +
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(uint32_t)(note->nc_systime[1] << 8) +
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(uint32_t)(note->nc_systime[2] << 16) +
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(uint32_t)(note->nc_systime[3] << 24);
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#endif
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switch (note->nc_type)
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{
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case NOTE_START:
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{
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FAR struct note_start_s *note_start =
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(FAR struct note_start_s *)note;
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if (note->nc_length < sizeof(struct note_start_s))
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{
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syslog(LOG_ERR,
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"ERROR: note too small for start note: %d\n",
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note->nc_length);
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return;
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}
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#ifdef CONFIG_SMP
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#if CONFIG_TASK_NAME_SIZE > 0
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syslog_time(LOG_INFO,
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"Task %u \"%s\" started, CPU%u, priority %u\n",
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(unsigned int)pid,
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note_start->nst_name, (unsigned int)note->nc_cpu,
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(unsigned int)note->nc_priority);
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#else
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syslog_time(LOG_INFO,
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"Task %u started, CPU%u, priority %u\n",
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(unsigned int)pid,
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(unsigned int)note->nc_cpu,
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(unsigned int)note->nc_priority);
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#endif
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#else
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#if CONFIG_TASK_NAME_SIZE > 0
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syslog_time(LOG_INFO,
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"Task %u \"%s\" started, priority %u\n",
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(unsigned int)pid,
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note_start->nst_name, (unsigned int)note->nc_priority);
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#else
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syslog_time(LOG_INFO,
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"Task %u started, priority %u\n",
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(unsigned int)pid,
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(unsigned int)note->nc_priority);
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#endif
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#endif
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}
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break;
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case NOTE_STOP:
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{
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if (note->nc_length != sizeof(struct note_stop_s))
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{
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syslog(LOG_ERR,
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"ERROR: Size incorrect for stop note: %d\n",
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note->nc_length);
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return;
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}
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#ifdef CONFIG_SMP
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syslog_time(LOG_INFO,
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"Task %u stopped, CPU%u, priority %u\n",
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(unsigned int)pid,
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(unsigned int)note->nc_cpu, (unsigned int)note->nc_priority);
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#else
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syslog_time(LOG_INFO,
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"Task %u stopped, priority %u\n",
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(unsigned int)pid,
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(unsigned int)note->nc_priority);
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#endif
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}
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break;
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case NOTE_SUSPEND:
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{
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FAR struct note_suspend_s *note_suspend =
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(FAR struct note_suspend_s *)note;
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FAR const char *statename;
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if (note->nc_length != sizeof(struct note_suspend_s))
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{
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syslog(LOG_ERR,
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"ERROR: Size incorrect for suspend note: %d\n",
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note->nc_length);
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return;
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}
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if (note_suspend->nsu_state < NSTATES)
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{
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statename = g_statenames[note_suspend->nsu_state];
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}
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else
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{
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statename = "ERROR";
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}
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#ifdef CONFIG_SMP
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syslog_time(LOG_INFO,
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"Task %u suspended, CPU%u, priority %u, state \"%s\"\n",
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(unsigned int)pid,
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(unsigned int)note->nc_cpu,
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(unsigned int)note->nc_priority, statename);
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#else
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syslog_time(LOG_INFO,
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"Task %u suspended, priority %u, state \"%s\"\n",
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(unsigned int)pid,
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(unsigned int)note->nc_priority, statename);
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#endif
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}
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break;
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case NOTE_RESUME:
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{
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if (note->nc_length != sizeof(struct note_resume_s))
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{
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syslog(LOG_ERR,
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"ERROR: Size incorrect for resume note: %d\n",
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note->nc_length);
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return;
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}
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#ifdef CONFIG_SMP
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syslog_time(LOG_INFO,
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"Task %u resumed, CPU%u, priority %u\n",
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(unsigned int)pid,
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(unsigned int)note->nc_cpu,
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(unsigned int)note->nc_priority);
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#else
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syslog_time(LOG_INFO,
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"Task %u resumed, priority %u\n",
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(unsigned int)pid,
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(unsigned int)note->nc_priority);
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#endif
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}
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break;
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#ifdef CONFIG_SMP
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case NOTE_CPU_START:
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{
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FAR struct note_cpu_start_s *note_start =
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(FAR struct note_cpu_start_s *)note;
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if (note->nc_length != sizeof(struct note_cpu_start_s))
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{
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syslog(LOG_ERR,
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"ERROR: Size incorrect for CPU start note: %d\n",
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note->nc_length);
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return;
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}
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syslog_time(LOG_INFO,
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"Task %u CPU%u requests CPU%u to start, priority %u\n",
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(unsigned int)pid,
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(unsigned int)note->nc_cpu,
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(unsigned int)note_start->ncs_target,
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(unsigned int)note->nc_priority);
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}
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break;
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case NOTE_CPU_STARTED:
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{
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if (note->nc_length != sizeof(struct note_cpu_started_s))
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{
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syslog(LOG_ERR,
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"ERROR: Size incorrect for CPU started note: %d\n",
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note->nc_length);
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return;
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}
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syslog_time(LOG_INFO,
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"Task %u CPU%u has started, priority %u\n",
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(unsigned int)pid,
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(unsigned int)note->nc_cpu,
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(unsigned int)note->nc_priority);
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}
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break;
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case NOTE_CPU_PAUSE:
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{
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FAR struct note_cpu_pause_s *note_pause =
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(FAR struct note_cpu_pause_s *)note;
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if (note->nc_length != sizeof(struct note_cpu_pause_s))
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{
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syslog(LOG_ERR,
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"ERROR: Size incorrect for CPU pause note: %d\n",
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note->nc_length);
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return;
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}
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syslog_time(LOG_INFO,
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"Task %u CPU%u requests CPU%u to pause, priority %u\n",
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(unsigned int)pid,
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(unsigned int)note->nc_cpu,
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(unsigned int)note_pause->ncp_target,
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(unsigned int)note->nc_priority);
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}
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break;
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case NOTE_CPU_PAUSED:
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{
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if (note->nc_length != sizeof(struct note_cpu_paused_s))
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{
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syslog(LOG_ERR,
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"ERROR: Size incorrect for CPU paused note: %d\n",
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note->nc_length);
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return;
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}
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syslog_time(LOG_INFO,
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"Task %u CPU%u has paused, priority %u\n",
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(unsigned int)pid,
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(unsigned int)note->nc_cpu,
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(unsigned int)note->nc_priority);
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}
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break;
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case NOTE_CPU_RESUME:
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{
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FAR struct note_cpu_resume_s *note_resume =
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(FAR struct note_cpu_resume_s *)note;
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|
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if (note->nc_length != sizeof(struct note_cpu_resume_s))
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{
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syslog(LOG_ERR,
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"ERROR: Size incorrect for CPU resume note: %d\n",
|
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note->nc_length);
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return;
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}
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|
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syslog_time(LOG_INFO,
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"Task %u CPU%u requests CPU%u to resume, priority %u\n",
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(unsigned int)pid,
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(unsigned int)note->nc_cpu,
|
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(unsigned int)note_resume->ncr_target,
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(unsigned int)note->nc_priority);
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}
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break;
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case NOTE_CPU_RESUMED:
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{
|
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if (note->nc_length != sizeof(struct note_cpu_resumed_s))
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{
|
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syslog(LOG_ERR,
|
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"ERROR: Size incorrect for CPU resumed note: %d\n",
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note->nc_length);
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return;
|
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}
|
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|
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syslog_time(LOG_INFO,
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"Task %u CPU%u has resumed, priority %u\n",
|
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(unsigned int)pid,
|
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(unsigned int)note->nc_cpu,
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(unsigned int)note->nc_priority);
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}
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break;
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#endif
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|
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#ifdef CONFIG_SCHED_INSTRUMENTATION_PREEMPTION
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case NOTE_PREEMPT_LOCK:
|
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case NOTE_PREEMPT_UNLOCK:
|
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{
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FAR struct note_preempt_s *note_preempt =
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(FAR struct note_preempt_s *)note;
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uint16_t count;
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|
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if (note->nc_length != sizeof(struct note_preempt_s))
|
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{
|
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syslog(LOG_ERR,
|
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"ERROR: Size incorrect for preemption note: %d\n",
|
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note->nc_length);
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return;
|
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}
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|
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count = (uint16_t) note_preempt->npr_count[0] +
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(uint16_t)(note_preempt->npr_count[1] << 8);
|
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|
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if (note->nc_type == NOTE_PREEMPT_LOCK)
|
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{
|
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#ifdef CONFIG_SMP
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syslog_time(LOG_INFO,
|
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"Task %u locked, CPU%u, priority %u, count=%u\n",
|
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(unsigned int)pid,
|
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(unsigned int)note->nc_cpu,
|
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(unsigned int)note->nc_priority, (unsigned int)count);
|
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#else
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syslog_time(LOG_INFO,
|
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"Task %u locked, priority %u, count=%u\n",
|
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(unsigned int)pid,
|
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(unsigned int)note->nc_priority, (unsigned int)count);
|
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#endif
|
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}
|
|
else
|
|
{
|
|
#ifdef CONFIG_SMP
|
|
syslog_time(LOG_INFO,
|
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"Task %u unlocked, CPU%u, priority %u, count=%u\n",
|
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(unsigned int)pid,
|
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(unsigned int)note->nc_cpu,
|
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(unsigned int)note->nc_priority, (unsigned int)count);
|
|
#else
|
|
syslog_time(LOG_INFO,
|
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"Task %u unlocked, priority %u, count=%u\n",
|
|
(unsigned int)pid,
|
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(unsigned int)note->nc_priority, (unsigned int)count);
|
|
#endif
|
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}
|
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}
|
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break;
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_SCHED_INSTRUMENTATION_CSECTION
|
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case NOTE_CSECTION_ENTER:
|
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case NOTE_CSECTION_LEAVE:
|
|
{
|
|
#ifdef CONFIG_SMP
|
|
FAR struct note_csection_s *note_csection =
|
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(FAR struct note_csection_s *)note;
|
|
uint16_t count;
|
|
#endif
|
|
|
|
if (note->nc_length != sizeof(struct note_csection_s))
|
|
{
|
|
syslog(LOG_ERR,
|
|
"ERROR: Size incorrect for csection note: %d\n",
|
|
note->nc_length);
|
|
return;
|
|
}
|
|
|
|
#ifdef CONFIG_SMP
|
|
count = (uint16_t) note_csection->ncs_count[0] +
|
|
(uint16_t)(note_csection->ncs_count[1] << 8);
|
|
|
|
if (note->nc_type == NOTE_CSECTION_ENTER)
|
|
{
|
|
syslog_time(LOG_INFO,
|
|
"Task %u enter csection, CPU%u, priority %u, "
|
|
"count=%u\n",
|
|
(unsigned int)pid,
|
|
(unsigned int)note->nc_cpu,
|
|
(unsigned int)note->nc_priority, (unsigned int)count);
|
|
}
|
|
else
|
|
{
|
|
syslog_time(LOG_INFO,
|
|
"Task %u leave csection, CPU%u, priority %u, "
|
|
"count=%u\n",
|
|
(unsigned int)pid,
|
|
(unsigned int)note->nc_cpu,
|
|
(unsigned int)note->nc_priority, (unsigned int)count);
|
|
}
|
|
#else
|
|
if (note->nc_type == NOTE_CSECTION_ENTER)
|
|
{
|
|
syslog_time(LOG_INFO, "Task %u enter csection, priority %u\n",
|
|
(unsigned int)pid,
|
|
(unsigned int)note->nc_priority);
|
|
}
|
|
else
|
|
{
|
|
syslog_time(LOG_INFO, "Task %u leave csection, priority %u\n",
|
|
(unsigned int)pid,
|
|
(unsigned int)note->nc_priority);
|
|
}
|
|
#endif
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#ifdef CONFIG_SCHED_INSTRUMENTATION_SPINLOCKS
|
|
case NOTE_SPINLOCK_LOCK:
|
|
case NOTE_SPINLOCK_LOCKED:
|
|
case NOTE_SPINLOCK_UNLOCK:
|
|
case NOTE_SPINLOCK_ABORT:
|
|
{
|
|
FAR struct note_spinlock_s *note_spinlock =
|
|
(FAR struct note_spinlock_s *)note;
|
|
FAR void *spinlock;
|
|
|
|
if (note->nc_length != sizeof(struct note_spinlock_s))
|
|
{
|
|
syslog(LOG_ERR,
|
|
"ERROR: Size incorrect for spinlock note: %d\n",
|
|
note->nc_length);
|
|
return;
|
|
}
|
|
|
|
spinlock = (FAR void *)
|
|
((uintptr_t)note_spinlock->nsp_spinlock[0]
|
|
+ ((uintptr_t)note_spinlock->nsp_spinlock[1] << 8)
|
|
#if UINTPTR_MAX > UINT16_MAX
|
|
+ ((uintptr_t)note_spinlock->nsp_spinlock[2] << 16)
|
|
+ ((uintptr_t)note_spinlock->nsp_spinlock[3] << 24)
|
|
#if UINTPTR_MAX > UINT32_MAX
|
|
+ ((uintptr_t)note_spinlock->nsp_spinlock[4] << 32)
|
|
+ ((uintptr_t)note_spinlock->nsp_spinlock[5] << 40)
|
|
+ ((uintptr_t)note_spinlock->nsp_spinlock[6] << 48)
|
|
+ ((uintptr_t)note_spinlock->nsp_spinlock[7] << 56)
|
|
#endif
|
|
#endif
|
|
);
|
|
|
|
switch (note->nc_type)
|
|
{
|
|
#ifdef CONFIG_SMP
|
|
case NOTE_SPINLOCK_LOCK:
|
|
{
|
|
syslog_time(LOG_INFO,
|
|
"Task %u CPU%u wait for spinlock=%p value=%u "
|
|
"priority %u\n",
|
|
(unsigned int)pid,
|
|
(unsigned int)note->nc_cpu,
|
|
spinlock,
|
|
(unsigned int)note_spinlock->nsp_value,
|
|
(unsigned int)note->nc_priority);
|
|
}
|
|
break;
|
|
|
|
case NOTE_SPINLOCK_LOCKED:
|
|
{
|
|
syslog_time(LOG_INFO,
|
|
"Task %u CPU%u has spinlock=%p value=%u "
|
|
"priority %u\n",
|
|
(unsigned int)pid,
|
|
(unsigned int)note->nc_cpu,
|
|
spinlock,
|
|
(unsigned int)note_spinlock->nsp_value,
|
|
(unsigned int)note->nc_priority);
|
|
}
|
|
break;
|
|
|
|
case NOTE_SPINLOCK_UNLOCK:
|
|
{
|
|
syslog_time(LOG_INFO,
|
|
"Task %u CPU%u unlocking spinlock=%p value=%u "
|
|
"priority %u\n",
|
|
(unsigned int)pid,
|
|
(unsigned int)note->nc_cpu,
|
|
spinlock,
|
|
(unsigned int)note_spinlock->nsp_value,
|
|
(unsigned int)note->nc_priority);
|
|
}
|
|
break;
|
|
|
|
case NOTE_SPINLOCK_ABORT:
|
|
{
|
|
syslog_time(LOG_INFO,
|
|
"Task %u CPU%u abort wait on spinlock=%p value=%u "
|
|
"priority %u\n",
|
|
(unsigned int)pid,
|
|
(unsigned int)note->nc_cpu,
|
|
spinlock,
|
|
(unsigned int)note_spinlock->nsp_value,
|
|
(unsigned int)note->nc_priority);
|
|
}
|
|
break;
|
|
#else
|
|
case NOTE_SPINLOCK_LOCK:
|
|
{
|
|
syslog_time(LOG_INFO,
|
|
"Task %u wait for spinlock=%p value=%u "
|
|
"priority %u\n",
|
|
(unsigned int)pid,
|
|
spinlock,
|
|
(unsigned int)note_spinlock->nsp_value,
|
|
(unsigned int)note->nc_priority);
|
|
}
|
|
break;
|
|
|
|
case NOTE_SPINLOCK_LOCKED:
|
|
{
|
|
syslog_time(LOG_INFO,
|
|
"Task %u has spinlock=%p value=%u priority %u\n",
|
|
(unsigned int)pid,
|
|
spinlock,
|
|
(unsigned int)note_spinlock->nsp_value,
|
|
(unsigned int)note->nc_priority);
|
|
}
|
|
break;
|
|
|
|
case NOTE_SPINLOCK_UNLOCK:
|
|
{
|
|
syslog_time(LOG_INFO,
|
|
"Task %u unlocking spinlock=%p value=%u "
|
|
"priority %u\n",
|
|
(unsigned int)pid,
|
|
spinlock,
|
|
(unsigned int)note_spinlock->nsp_value,
|
|
(unsigned int)note->nc_priority);
|
|
}
|
|
break;
|
|
|
|
case NOTE_SPINLOCK_ABORT:
|
|
{
|
|
syslog_time(LOG_INFO,
|
|
"Task %u abort wait on spinlock=%p value=%u "
|
|
"priority %u\n",
|
|
(unsigned int)pid,
|
|
spinlock,
|
|
(unsigned int)note_spinlock->nsp_value,
|
|
(unsigned int)note->nc_priority);
|
|
}
|
|
break;
|
|
#endif
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_SCHED_INSTRUMENTATION_SYSCALL
|
|
case NOTE_SYSCALL_ENTER:
|
|
{
|
|
FAR struct note_syscall_enter_s *note_sysenter =
|
|
(FAR struct note_syscall_enter_s *)note;
|
|
|
|
if (note->nc_length < SIZEOF_NOTE_SYSCALL_ENTER(0))
|
|
{
|
|
syslog(LOG_ERR,
|
|
"ERROR: Size incorrect for SYSCALL enter note: %d\n",
|
|
note->nc_length);
|
|
return;
|
|
}
|
|
|
|
syslog_time(LOG_INFO,
|
|
"Task %u Enter SYSCALL %d\n",
|
|
(unsigned int)pid,
|
|
note_sysenter->nsc_nr);
|
|
}
|
|
break;
|
|
|
|
case NOTE_SYSCALL_LEAVE:
|
|
{
|
|
FAR struct note_syscall_leave_s *note_sysleave =
|
|
(FAR struct note_syscall_leave_s *)note;
|
|
uintptr_t result;
|
|
|
|
if (note->nc_length != sizeof(struct note_syscall_leave_s))
|
|
{
|
|
syslog(LOG_ERR,
|
|
"ERROR: Size incorrect for SYSCALL leave note: %d\n",
|
|
note->nc_length);
|
|
return;
|
|
}
|
|
|
|
result = (uintptr_t)note_sysleave->nsc_result[0]
|
|
+ ((uintptr_t)note_sysleave->nsc_result[1] << 8)
|
|
#if UINTPTR_MAX > UINT16_MAX
|
|
+ ((uintptr_t)note_sysleave->nsc_result[2] << 16)
|
|
+ ((uintptr_t)note_sysleave->nsc_result[3] << 24)
|
|
#if UINTPTR_MAX > UINT32_MAX
|
|
+ ((uintptr_t)note_sysleave->nsc_result[4] << 32)
|
|
+ ((uintptr_t)note_sysleave->nsc_result[5] << 40)
|
|
+ ((uintptr_t)note_sysleave->nsc_result[6] << 48)
|
|
+ ((uintptr_t)note_sysleave->nsc_result[7] << 56)
|
|
#endif
|
|
#endif
|
|
;
|
|
|
|
syslog_time(LOG_INFO,
|
|
"Task %u Leave SYSCALL %d: %" PRIdPTR "\n",
|
|
(unsigned int)pid,
|
|
note_sysleave->nsc_nr, result);
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#ifdef CONFIG_SCHED_INSTRUMENTATION_IRQHANDLER
|
|
case NOTE_IRQ_ENTER:
|
|
case NOTE_IRQ_LEAVE:
|
|
{
|
|
FAR struct note_irqhandler_s *note_irq =
|
|
(FAR struct note_irqhandler_s *)note;
|
|
|
|
if (note->nc_length != sizeof(struct note_irqhandler_s))
|
|
{
|
|
syslog(LOG_ERR,
|
|
"ERROR: Size incorrect for IRQ note: %d\n",
|
|
note->nc_length);
|
|
return;
|
|
}
|
|
|
|
syslog_time(LOG_INFO,
|
|
"Task %u %s IRQ %d\n",
|
|
(unsigned int)pid,
|
|
note->nc_type == NOTE_IRQ_ENTER ? "Enter" : "Leave",
|
|
note_irq->nih_irq);
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
syslog(LOG_INFO, "Unrecognized note type: %d\n", note->nc_type);
|
|
return;
|
|
}
|
|
|
|
offset += note->nc_length;
|
|
}
|
|
}
|
|
|
|
/************************************************************************************
|
|
* Name: note_daemon
|
|
************************************************************************************/
|
|
|
|
static int note_daemon(int argc, char *argv[])
|
|
{
|
|
ssize_t nread;
|
|
int fd;
|
|
|
|
/* Indicate that we are running */
|
|
|
|
g_note_daemon_started = true;
|
|
syslog(LOG_INFO, "note_daemon: Running\n");
|
|
|
|
/* Open the note driver */
|
|
|
|
syslog(LOG_INFO, "note_daemon: Opening /dev/note\n");
|
|
fd = open("/dev/note", O_RDONLY);
|
|
if (fd < 0)
|
|
{
|
|
int errcode = errno;
|
|
syslog(LOG_ERR, "note_daemon: ERROR: Failed to open /dev/note: %d\n",
|
|
errcode);
|
|
goto errout;
|
|
}
|
|
|
|
/* Now loop forever, dumping note data to the display */
|
|
|
|
for (; ; )
|
|
{
|
|
nread = read(fd, g_note_buffer, CONFIG_SYSTEM_NOTE_BUFFERSIZE);
|
|
if (nread > 0)
|
|
{
|
|
dump_notes(nread);
|
|
}
|
|
|
|
usleep(CONFIG_SYSTEM_NOTE_DELAY * 1000L);
|
|
}
|
|
|
|
close(fd);
|
|
|
|
errout:
|
|
g_note_daemon_started = false;
|
|
|
|
syslog(LOG_INFO, "note_daemon: Terminating\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
/************************************************************************************
|
|
* Public Functions
|
|
************************************************************************************/
|
|
|
|
/************************************************************************************
|
|
* Name: note_main
|
|
************************************************************************************/
|
|
|
|
int main(int argc, FAR char *argv[])
|
|
{
|
|
int ret;
|
|
|
|
printf("note_main: Starting the note_daemon\n");
|
|
if (g_note_daemon_started)
|
|
{
|
|
printf("note_main: note_daemon already running\n");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
ret = task_create("note_daemon", CONFIG_SYSTEM_NOTE_PRIORITY,
|
|
CONFIG_SYSTEM_NOTE_STACKSIZE, note_daemon,
|
|
NULL);
|
|
if (ret < 0)
|
|
{
|
|
int errcode = errno;
|
|
printf("note_main: ERROR: Failed to start note_daemon: %d\n",
|
|
errcode);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
printf("note_main: note_daemon started\n");
|
|
return EXIT_SUCCESS;
|
|
}
|