include/lttng-share.h

   1 /*
   2  * Copyright (C) - 2011 - David Goulet <david.goulet@polymtl.ca>
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; only version 2
   7  * of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  */
  18
  19 #ifndef _LTTNG_SHARE_H
  20 #define _LTTNG_SHARE_H
  21
  22 /* Default channel attributes */
  23 #define DEFAULT_CHANNEL_NAME            "channel0"
  24 #define DEFAULT_CHANNEL_OVERWRITE       0       /* usec */
  25 /* DEFAULT_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
  26 #define DEFAULT_CHANNEL_SUBBUF_SIZE     4096    /* bytes */
  27 /* DEFAULT_CHANNEL_SUBBUF_NUM must always be a power of 2 */
  28 #define DEFAULT_CHANNEL_SUBBUF_NUM      8
  29 #define DEFAULT_CHANNEL_SWITCH_TIMER    0       /* usec */
  30 #define DEFAULT_CHANNEL_READ_TIMER              200     /* usec */
  31 #define DEFAULT_CHANNEL_OUTPUT          LTTNG_EVENT_MMAP
  32
  33 #define DEFAULT_METADATA_SUBBUF_SIZE    4096
  34 #define DEFAULT_METADATA_SUBBUF_NUM     2
  35
  36 /* Kernel has different defaults */
  37
  38 /* DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
  39 #define DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE  262144    /* bytes */
  40 /* DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM must always be a power of 2 */
  41 #define DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM   4
  42 /* See lttng-kernel.h enum lttng_kernel_output for channel output */
  43 #define DEFAULT_KERNEL_CHANNEL_OUTPUT       LTTNG_EVENT_SPLICE
  44
  45 #endif /* _LTTNG_SHARE_H */