/*
- * Copyright (C) - 2011 - David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; only version 2 of the License.
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _LTTNG_SHARE_H
#define _LTTNG_SHARE_H
-#include <asm/types.h>
-#include <stdint.h>
+#include <stdlib.h>
-typedef uint32_t u32;
-typedef uint64_t u64;
-
-typedef __s64 s64;
-
-#define LTTNG_RUNDIR "/var/run/lttng"
+#include <lttng/lttng.h>
/* Default channel attributes */
-#define DEFAULT_CHANNEL_NAME "channel0"
-#define DEFAULT_CHANNEL_OVERWRITE 0 /* usec */
+#define DEFAULT_CHANNEL_NAME "channel0"
+#define DEFAULT_CHANNEL_OVERWRITE 0 /* usec */
/* DEFAULT_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
-#define DEFAULT_CHANNEL_SUBBUF_SIZE 4096 /* bytes */
+#define DEFAULT_CHANNEL_SUBBUF_SIZE 4096 /* bytes */
/* DEFAULT_CHANNEL_SUBBUF_NUM must always be a power of 2 */
-#define DEFAULT_CHANNEL_SUBBUF_NUM 8
-#define DEFAULT_CHANNEL_SWITCH_TIMER 0 /* usec */
-#define DEFAULT_CHANNEL_READ_TIMER 200 /* usec */
+#define DEFAULT_CHANNEL_SUBBUF_NUM 8
+#define DEFAULT_CHANNEL_SWITCH_TIMER 0 /* usec */
+#define DEFAULT_CHANNEL_READ_TIMER 200 /* usec */
+#define DEFAULT_CHANNEL_OUTPUT LTTNG_EVENT_MMAP
+
+#define DEFAULT_METADATA_SUBBUF_SIZE 4096
+#define DEFAULT_METADATA_SUBBUF_NUM 2
+
+/* Kernel has different defaults */
+
+/* DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
+#define DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE 262144 /* bytes */
+/* DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM must always be a power of 2 */
+#define DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM 4
/* See lttng-kernel.h enum lttng_kernel_output for channel output */
-#define DEFAULT_KERNEL_CHANNEL_OUTPUT LTTNG_KERNEL_SPLICE
+#define DEFAULT_KERNEL_CHANNEL_OUTPUT LTTNG_EVENT_SPLICE
-/* == NOT IMPLEMENTED ==
+/* User space defaults */
+
+/* Must be a power of 2 */
+#define DEFAULT_UST_CHANNEL_SUBBUF_SIZE 4096 /* bytes */
+/* Must be a power of 2 */
+#define DEFAULT_UST_CHANNEL_SUBBUF_NUM 4
+/* See lttng-ust.h enum lttng_ust_output */
#define DEFAULT_UST_CHANNEL_OUTPUT LTTNG_UST_MMAP
-*/
/*
- * lttng user-space instrumentation type
+ * Default timeout value for the sem_timedwait() call. Blocking forever is not
+ * wanted so a timeout is used to control the data flow and not freeze the
+ * session daemon.
+ */
+#define DEFAULT_SEM_WAIT_TIMEOUT 30 /* in seconds */
+
+/*
+ * Takes a pointer x and transform it so we can use it to access members
+ * without a function call. Here an example:
+ *
+ * #define GET_SIZE(x) LTTNG_REF(x)->size
+ *
+ * struct { int size; } s;
+ *
+ * printf("size : %d\n", GET_SIZE(&s));
+ *
+ * For this example we can't use something like this for compatibility purpose
+ * since this will fail:
+ *
+ * #define GET_SIZE(x) x->size;
+ *
+ * This is mostly use for the compatibility layer of lttng-tools. See
+ * poll/epoll for a good example. Since x can be on the stack or allocated
+ * memory using malloc(), we must use generic accessors for compat in order to
+ * *not* use a function to access members and not the variable name.
+ */
+#define LTTNG_REF(x) ((typeof(*x) *)(x))
+
+/*
+ * Memory allocation zeroed
*/
-enum lttng_ust_instrumentation {
- LTTNG_UST_TRACEPOINT,
- LTTNG_UST_MARKER,
-};
+#define zmalloc(x) calloc(1, x)
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(array) (sizeof(array) / (sizeof((array)[0])))
+#endif
+
#endif /* _LTTNG_SHARE_H */