/**************************************************************************** * system/note/note_main.c * * Copyright (C) 2016 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #include #include #include #include #include #include #include #include /**************************************************************************** * Private Data ****************************************************************************/ static bool g_note_daemon_started; static uint8_t g_note_buffer[CONFIG_SYSTEM_NOTE_BUFFERSIZE]; /* Names of task/thread states */ static FAR const char *g_statenames[] = { "Invalid", "Waiting for Unlock", "Ready", "Running", "Inactive", "Waiting for Semaphore", #ifndef CONFIG_DISABLE_SIGNALS "Waiting for Signal", #endif #ifndef CONFIG_DISABLE_MQUEUE "Waiting for MQ empty", "Waiting for MQ full" #endif }; #define NSTATES (sizeof(g_statenames)/sizeof(FAR const char *)) /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: dump_notes ****************************************************************************/ static void dump_notes(size_t nread) { FAR struct note_common_s *note; uint32_t systime; pid_t pid; off_t offset; offset = 0; while (offset < nread) { note = (FAR struct note_common_s *)&g_note_buffer[offset]; pid = (pid_t)note->nc_pid[0] + ((pid_t)note->nc_pid[1] << 8); systime = (uint32_t) note->nc_systime[0] + (uint32_t)(note->nc_systime[1] << 8) + (uint32_t)(note->nc_systime[2] << 16) + (uint32_t)(note->nc_systime[3] << 24); switch (note->nc_type) { case NOTE_START: { FAR struct note_start_s *note_start = (FAR struct note_start_s *)note; if (note->nc_length < sizeof(struct note_start_s)) { syslog(LOG_INFO, "ERROR: note too small for start note: %d\n", note->nc_length); return; } #ifdef CONFIG_SMP #if CONFIG_TASK_NAME_SIZE > 0 syslog(LOG_INFO, "%08lx: Task %u \"%s\" started, CPU%u, priority %u\n", (unsigned long)systime, (unsigned int)pid, note_start->nst_name, (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority); #else syslog(LOG_INFO, "%08lx: Task %u started, CPU%u, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority); #endif #else #if CONFIG_TASK_NAME_SIZE > 0 syslog(LOG_INFO, "%08lx: Task %u \"%s\" started, priority %u\n", (unsigned long)systime, (unsigned int)pid, note_start->nst_name, (unsigned int)note->nc_priority); #else syslog(LOG_INFO, "%08lx: Task %u started, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_priority); #endif #endif } break; case NOTE_STOP: { if (note->nc_length != sizeof(struct note_stop_s)) { syslog(LOG_INFO, "ERROR: note size incorrect for stop note: %d\n", note->nc_length); return; } #ifdef CONFIG_SMP syslog(LOG_INFO, "%08lx: Task %u stopped, CPU%u, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority); #else syslog(LOG_INFO, "%08lx: Task %u stopped, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_priority); #endif } break; case NOTE_SUSPEND: { FAR struct note_suspend_s *note_suspend = (FAR struct note_suspend_s *)note; FAR const char *statename; if (note->nc_length != sizeof(struct note_suspend_s)) { syslog(LOG_INFO, "ERROR: note size incorrect for suspend note: %d\n", note->nc_length); return; } if (note_suspend->nsu_state < NSTATES) { statename = g_statenames[note_suspend->nsu_state]; } else { statename = "ERROR"; } #ifdef CONFIG_SMP syslog(LOG_INFO, "%08lx: Task %u suspended, CPU%u, priority %u, state \"%s\"\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority, statename); #else syslog(LOG_INFO, "%08lx: Task %u suspended, priority %u, state \"%s\"\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_priority, statename); #endif } break; case NOTE_RESUME: { if (note->nc_length != sizeof(struct note_resume_s)) { syslog(LOG_INFO, "ERROR: note size incorrect for resume note: %d\n", note->nc_length); return; } #ifdef CONFIG_SMP syslog(LOG_INFO, "%08lx: Task %u resumed, CPU%u, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority); #else syslog(LOG_INFO, "%08lx: Task %u resumed, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_priority); #endif } break; #ifdef CONFIG_SMP case NOTE_CPU_START: { FAR struct note_cpu_start_s *note_start = (FAR struct note_cpu_start_s *)note; if (note->nc_length != sizeof(struct note_cpu_start_s)) { syslog(LOG_INFO, "ERROR: note size incorrect for CPU start note: %d\n", note->nc_length); return; } syslog(LOG_INFO, "%08lx: Task %u CPU%u requests CPU%u to start, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note_start->ncs_target, (unsigned int)note->nc_priority); } break; case NOTE_CPU_STARTED: { if (note->nc_length != sizeof(struct note_cpu_started_s)) { syslog(LOG_INFO, "ERROR: note size incorrect for CPU started note: %d\n", note->nc_length); return; } syslog(LOG_INFO, "%08lx: Task %u CPU%u has started, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority); } break; case NOTE_CPU_PAUSE: { FAR struct note_cpu_pause_s *note_pause = (FAR struct note_cpu_pause_s *)note; if (note->nc_length != sizeof(struct note_cpu_pause_s)) { syslog(LOG_INFO, "ERROR: note size incorrect for CPU pause note: %d\n", note->nc_length); return; } syslog(LOG_INFO, "%08lx: Task %u CPU%u requests CPU%u to pause, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note_pause->ncp_target, (unsigned int)note->nc_priority); } break; case NOTE_CPU_PAUSED: { if (note->nc_length != sizeof(struct note_cpu_paused_s)) { syslog(LOG_INFO, "ERROR: note size incorrect for CPU paused note: %d\n", note->nc_length); return; } syslog(LOG_INFO, "%08lx: Task %u CPU%u has paused, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority); } break; case NOTE_CPU_RESUME: { FAR struct note_cpu_resume_s *note_resume = (FAR struct note_cpu_resume_s *)note; if (note->nc_length != sizeof(struct note_cpu_resume_s)) { syslog(LOG_INFO, "ERROR: note size incorrect for CPU resume note: %d\n", note->nc_length); return; } syslog(LOG_INFO, "%08lx: Task %u CPU%u requests CPU%u to resume, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note_resume->ncr_target, (unsigned int)note->nc_priority); } break; case NOTE_CPU_RESUMED: { if (note->nc_length != sizeof(struct note_cpu_resumed_s)) { syslog(LOG_INFO, "ERROR: note size incorrect for CPU resumed note: %d\n", note->nc_length); return; } syslog(LOG_INFO, "%08lx: Task %u CPU%u has resumed, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority); } break; #endif #ifdef CONFIG_SCHED_INSTRUMENTATION_PREEMPTION case NOTE_PREEMPT_LOCK: case NOTE_PREEMPT_UNLOCK: { FAR struct note_preempt_s *note_preempt = (FAR struct note_preempt_s *)note; uint16_t count; if (note->nc_length != sizeof(struct note_preempt_s)) { syslog(LOG_INFO, "ERROR: note size incorrect for preemption note: %d\n", note->nc_length); return; } count = (uint16_t) note_preempt->npr_count[0] + (uint16_t)(note_preempt->npr_count[1] << 8); if (note->nc_type == NOTE_PREEMPT_LOCK) { #ifdef CONFIG_SMP syslog(LOG_INFO, "%08lx: Task %u locked, CPU%u, priority %u, count=%u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority, (unsigned int)count); #else syslog(LOG_INFO, "%08lx: Task %u locked, priority %u, count=%u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_priority, (unsigned int)count); #endif } else { #ifdef CONFIG_SMP syslog(LOG_INFO, "%08lx: Task %u unlocked, CPU%u, priority %u, count=%u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority, (unsigned int)count); #else syslog(LOG_INFO, "%08lx: Task %u unlocked, priority %u, count=%u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_priority, (unsigned int)count); #endif } } break; #endif #ifdef CONFIG_SCHED_INSTRUMENTATION_CSECTION case NOTE_CSECTION_ENTER: case NOTE_CSECTION_LEAVE: { #ifdef CONFIG_SMP FAR struct note_csection_s *note_csection = (FAR struct note_csection_s *)note; uint16_t count; #endif if (note->nc_length != sizeof(struct note_csection_s)) { syslog(LOG_INFO, "ERROR: note 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(LOG_INFO, "%08lx: Task %u enter csection, CPU%u, priority %u, count=%u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority, (unsigned int)count); } else { syslog(LOG_INFO, "%08lx: Task %u leave csection, CPU%u, priority %u, count=%u\n", (unsigned long)systime, (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(LOG_INFO, "%08lx: Task %u enter csection, priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_priority); } else { syslog(LOG_INFO, "%08lx: Task %u leave csection, priority %u\n", (unsigned long)systime, (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; if (note->nc_length != sizeof(struct note_spinlock_s)) { syslog(LOG_INFO, "ERROR: note size incorrect for spinlock note: %d\n", note->nc_length); return; } switch (note->nc_type) { #ifdef CONFIG_SMP case NOTE_SPINLOCK_LOCK: { syslog(LOG_INFO, "%08lx: Task %u CPU%u wait for spinlock=%p value=%u priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, note_spinlock->nsp_spinlock, (unsigned int)note_spinlock->nsp_value, (unsigned int)note->nc_priority); } break; case NOTE_SPINLOCK_LOCKED: { syslog(LOG_INFO, "%08lx: Task %u CPU%u has spinlock=%p value=%u priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, note_spinlock->nsp_spinlock, (unsigned int)note_spinlock->nsp_value, (unsigned int)note->nc_priority); } break; case NOTE_SPINLOCK_UNLOCK: { syslog(LOG_INFO, "%08lx: Task %u CPU%u unlocking spinlock=%p value=%u priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, note_spinlock->nsp_spinlock, (unsigned int)note_spinlock->nsp_value, (unsigned int)note->nc_priority); } break; case NOTE_SPINLOCK_ABORT: { syslog(LOG_INFO, "%08lx: Task %u CPU%u abort wait on spinlock=%p value=%u priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, note_spinlock->nsp_spinlock, (unsigned int)note_spinlock->nsp_value, (unsigned int)note->nc_priority); } break; #else case NOTE_SPINLOCK_LOCK: { syslog(LOG_INFO, "%08lx: Task %u wait for spinlock=%p value=%u priority %u\n", (unsigned long)systime, (unsigned int)pid, note_spinlock->nsp_spinlock, (unsigned int)note_spinlock->nsp_value, (unsigned int)note->nc_priority); } break; case NOTE_SPINLOCK_LOCKED: { syslog(LOG_INFO, "%08lx: Task %u has spinlock=%p value=%u priority %u\n", (unsigned long)systime, (unsigned int)pid, note_spinlock->nsp_spinlock, (unsigned int)note_spinlock->nsp_value, (unsigned int)note->nc_priority); } break; case NOTE_SPINLOCK_UNLOCK: { syslog(LOG_INFO, "%08lx: Task %u unlocking spinlock=%p value=%u priority %u\n", (unsigned long)systime, (unsigned int)pid, (unsigned int)note->nc_cpu, (unsigned int)note_spinlock->nsp_value, (unsigned int)note->nc_priority); } break; case NOTE_SPINLOCK_ABORT: { syslog(LOG_INFO, "%08lx: Task %u abort wait on spinlock=%p value=%u priority %u\n", (unsigned long)systime, (unsigned int)pid, note_spinlock->nsp_spinlock, (unsigned int)note_spinlock->nsp_value, (unsigned int)note->nc_priority); } break; #endif } #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_INFO, "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); } (void)close(fd); errout: g_note_daemon_started = false; syslog(LOG_INFO, "note_daemon: Terminating\n"); return EXIT_FAILURE; } /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * note_main ****************************************************************************/ #ifdef BUILD_MODULE int main(int argc, FAR char *argv[]) #else int note_main(int argc, FAR char *argv[]) #endif { 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; }