*
* 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.
+ * 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
#ifndef _LTTNG_SHARE_H
#define _LTTNG_SHARE_H
-#include <asm/types.h>
-#include <stdint.h>
-
-typedef uint32_t u32;
-typedef uint64_t u64;
-
-typedef __s64 s64;
-
-#define LTTNG_RUNDIR "/var/run/lttng"
-
/* 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_EVENT_SPLICE
-/* == NOT IMPLEMENTED ==
-#define DEFAULT_UST_CHANNEL_OUTPUT LTTNG_UST_MMAP
-*/
+/*
+ * 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 real 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.
+ */
+#define LTTNG_REF(x) ((typeof(*x) *)(x))
/*
- * lttng user-space instrumentation type
+ * Memory allocation zeroed
*/
-enum lttng_ust_instrumentation {
- LTTNG_UST_TRACEPOINT,
- LTTNG_UST_MARKER,
-};
+#define zmalloc(x) calloc(1, x)
#endif /* _LTTNG_SHARE_H */