Ejemplos de dmesg_list_add en C++ (Cpp)

Ejemplo n.º 1

Archivo: dmesg.c Proyecto: drxaero/mxt-app

//******************************************************************************
/// \brief  Get messages
/// \param  mxt  Maxtouch Device
/// \param  count Number of messages available
/// \param  init_timestamp Read newest dmesg line and initialise timestamp
/// \return #mxt_rc
int dmesg_get_msgs(struct mxt_device *mxt, int *count, bool init_timestamp)
{
  char msg[BUFFERSIZE];
  int ep, sp;
  int ret = MXT_SUCCESS;
  unsigned long sec, msec, lastsec = 0, lastmsec = 0;

  // Read entire kernel log buffer
  ep = klogctl(SYSLOG_ACTION_READ_ALL, mxt->sysfs.debug_msg_buf,
               mxt->sysfs.debug_msg_buf_size);
  // Return if no bytes read
  if (ep < 0) {
    mxt_warn(mxt->ctx, "klogctl error %d (%s)", errno, strerror(errno));
    ret = mxt_errno_to_rc(errno);
  } else {
    // null terminate
    mxt->sysfs.debug_msg_buf[ep] = 0;
    sp = ep;

    if (!init_timestamp)
      dmesg_list_empty(mxt);

    // Search for next new line character
    while (true) {
      sp--;
      while (sp >= 0 && *(mxt->sysfs.debug_msg_buf + sp) != '\n')
        sp--;

      if (sp <= 0)
        break;

      // Try to parse dmesg line
      if (sscanf(mxt->sysfs.debug_msg_buf+sp+1, "< %*c>[ %lu.%06lu] %255[^\n]",
                 &sec, &msec, msg) == 3) {
        if (init_timestamp) {
          mxt->sysfs.timestamp = sec;
          mxt->sysfs.mtimestamp = msec;
          mxt_verb(mxt->ctx, "%s - init [%5lu.%06lu]", __func__, sec, msec);
          break;
        }

        // Store time of last message in buffer
        if (lastsec == 0) {
          lastsec = sec;
          lastmsec = msec;
        }

        // Only 500 at a time, otherwise we overrun JNI reference limit.
        // Timestamp must be greater than previous messages, slightly
        // complicated by seconds and microseconds
        if ((mxt->sysfs.dmesg_count > MAX_DMESG_COUNT) ||
            (sec == mxt->sysfs.timestamp && msec <= mxt->sysfs.mtimestamp) ||
            (sec < mxt->sysfs.timestamp)) {
          mxt->sysfs.timestamp = lastsec;
          mxt->sysfs.mtimestamp = lastmsec;
          break;
        }

        char* msgptr;
        msg[sizeof(msg) - 1] = '\0';
        msgptr = strstr(msg, "MXT MSG");
        if (msgptr)
          dmesg_list_add(mxt, sec, msec, msgptr);
      }
    }

    if (!init_timestamp) {
      *count = mxt->sysfs.dmesg_count;
      mxt->sysfs.dmesg_ptr = mxt->sysfs.dmesg_head;
    }
  }

  return ret;
}

Ejemplo n.º 2

Archivo: log.c Proyecto: jugo8633/OSMonitor

void dmesg_dump()
{
	char buffer[KLOG_BUF_LEN + 1];
	char line[BUFFERSIZE*2];
	char *lineptr;
	int n, op, sp, ep;

	dmesg_item cur_dmesg;

	op = KLOG_READ_ALL;

	op = klogctl(op, buffer, KLOG_BUF_LEN);

	if (op < 0)
		return;

	dmesg_list_empty();

	pre_dmesg_time = cur_dmesg_time;

	buffer[op] = 0;

	sp = ep = 0;

	while(((int)(lineptr = strstr(buffer+sp, "\n" )) != 0))
	{
		ep = lineptr - buffer - sp;

		if(ep > BUFFERSIZE)
			ep = BUFFERSIZE;

		strncpy(line, buffer+sp, ep);
		line[ep+1] = '\0';
		sp = sp + ep +1;

		cur_dmesg.sec = 0;
		n = 0;

		if(line[3] == '[')
			n = sscanf(line, "<%c>[%lu.%*06lu] %[^\n]", &cur_dmesg.level, &cur_dmesg.sec, cur_dmesg.msg);
		else
			n = sscanf(line, "<%c>%[^\n]", &cur_dmesg.level, cur_dmesg.msg);
		cur_dmesg.msg[strlen(cur_dmesg.msg)-1] = '\0';

		if(n > 0)
		{
			int filter_item = 1;
			if(filter_dmesg == 1)
			{
				if(filter_dmesg_level != '8')
					if(cur_dmesg.level != filter_dmesg_level)
						filter_item = 0;

				if(strlen(filter_dmesg_string) != 0)
					if(strstr(cur_dmesg.msg, filter_dmesg_string) == 0)
						filter_item = 0;
			}

			if(filter_item == 1)
			{
				cur_dmesg_time = cur_dmesg.sec;
				dmesg_list_add(&cur_dmesg);
			}
		}

		if(sp >= op)
			break;
	}

}