#define _LIBLTTNGCTL_H
#include <limits.h>
+#include <stdint.h>
#include <uuid/uuid.h>
/* Default unix group name for tracing.
/* UUID short string version length (including \0) */
#define UUID_SHORT_STR_LEN 9
+typedef uint64_t u64;
+
/* Trace type for lttng_trace.
*/
enum lttng_trace_type {
enum lttng_trace_type type;
};
+/*
+ * LTTng DebugFS ABI structures.
+ */
+enum lttng_instrum_type {
+ INSTRUM_TRACEPOINTS,
+};
+
+struct lttng_channel {
+ int overwrite; /* 1: overwrite, 0: discard */
+ u64 subbuf_size;
+ u64 num_subbuf;
+ unsigned int switch_timer_interval;
+ unsigned int read_timer_interval;
+};
+
+struct lttng_event {
+ enum lttng_instrum_type itype;
+ char name[];
+};
+
extern int lttng_create_session(char *name, uuid_t *session_id);
extern int lttng_destroy_session(uuid_t *uuid);
extern int lttng_connect_sessiond(void);
--- /dev/null
+/*
+ * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@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 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.
+ */
+
+#ifndef _LTT_KERNEL_IOCTL_H
+#define _LTT_KERNEL_IOCTL_H
+
+/* Get a snapshot of the current ring buffer producer and consumer positions */
+#define RING_BUFFER_SNAPSHOT _IO(0xF6, 0x00)
+/* Get the consumer position (iteration start) */
+#define RING_BUFFER_SNAPSHOT_GET_CONSUMED _IOR(0xF6, 0x01, unsigned long)
+/* Get the producer position (iteration end) */
+#define RING_BUFFER_SNAPSHOT_GET_PRODUCED _IOR(0xF6, 0x02, unsigned long)
+/* Get exclusive read access to the specified sub-buffer position */
+#define RING_BUFFER_GET_SUBBUF _IOW(0xF6, 0x03, unsigned long)
+/* Release exclusive sub-buffer access */
+#define RING_BUFFER_PUT_SUBBUF _IO(0xF6, 0x04)
+
+/* Get exclusive read access to the next sub-buffer that can be read. */
+#define RING_BUFFER_GET_NEXT_SUBBUF _IO(0xF6, 0x05)
+/* Release exclusive sub-buffer access, move consumer forward. */
+#define RING_BUFFER_PUT_NEXT_SUBBUF _IO(0xF6, 0x06)
+/* returns the size of the current sub-buffer, without padding (for mmap). */
+#define RING_BUFFER_GET_SUBBUF_SIZE _IOR(0xF6, 0x07, unsigned long)
+/* returns the size of the current sub-buffer, with padding (for splice). */
+#define RING_BUFFER_GET_PADDED_SUBBUF_SIZE _IOR(0xF6, 0x08, unsigned long)
+/* returns the maximum size for sub-buffers. */
+#define RING_BUFFER_GET_MAX_SUBBUF_SIZE _IOR(0xF6, 0x09, unsigned long)
+/* returns the length to mmap. */
+#define RING_BUFFER_GET_MMAP_LEN _IOR(0xF6, 0x0A, unsigned long)
+/* returns the offset of the subbuffer belonging to the mmap reader. */
+#define RING_BUFFER_GET_MMAP_READ_OFFSET _IOR(0xF6, 0x0B, unsigned long)
+
+/* Create session LTTNG_SESSION */
+#define KERNEL_IO_CREATE_SESSION _IO(0xF6, 0x40)
+#define KERNEL_IO_SESSION_START _IO(0xF6, 0x41)
+#define KERNEL_IO_SESSION_STOP _IO(0xF6, 0x42)
+
+/* Create channel LTTNG_CHANNEL */
+#define KERNEL_IO_CREATE_CHANNEL _IOW(0xF6, 0x43, struct lttng_channel)
+#define KERNEL_IO_CREATE_STREAM _IO(0xF6, 0x44)
+#define KERNEL_IO_CREATE_EVENT _IOW(0xF6, 0x45, struct lttng_event)
+
+#endif /* _LTT_KERNEL_IOCTL_H */
/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@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
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+
+#include <sys/ioctl.h>
+
+#include "kernel-ioctl.h"
+#include "libkernelctl.h"
+#include "lttngerr.h"
+
+int kernctl_create_channel(int fd, struct lttng_channel *chops)
+{
+ return ioctl(fd, KERNEL_IO_CREATE_CHANNEL, chops);
+}
+
+int kernctl_create_event(int fd, struct lttng_event *ev)
+{
+ return ioctl(fd, KERNEL_IO_CREATE_EVENT, ev);
+}
+
+int kernctl_create_session(int fd)
+{
+ return ioctl(fd, KERNEL_IO_CREATE_SESSION);
+}
+
+int kernctl_create_stream(int fd)
+{
+ return ioctl(fd, KERNEL_IO_CREATE_STREAM);
+}
+
+/* returns the maximum size for sub-buffers. */
+int kernctl_get_max_subbuf_size(int fd, unsigned long *len)
+{
+ return ioctl(fd, RING_BUFFER_GET_MAX_SUBBUF_SIZE, len);
+}
+
+/* returns the length to mmap. */
+int kernctl_get_mmap_len(int fd, unsigned long *len)
+{
+ return ioctl(fd, RING_BUFFER_GET_MMAP_LEN, len);
+}
+
+/* returns the offset of the subbuffer belonging to the mmap reader. */
+int kernctl_get_mmap_read_offset(int fd, unsigned long *off)
+{
+ return ioctl(fd, RING_BUFFER_GET_MMAP_READ_OFFSET, off);
+}
+
+/* Get exclusive read access to the next sub-buffer that can be read. */
+int kernctl_get_next_subbuf(int fd)
+{
+ return ioctl(fd, RING_BUFFER_GET_NEXT_SUBBUF);
+}
+
+/* returns the size of the current sub-buffer, without padding (for mmap). */
+int kernctl_get_padded_subbuf_size(int fd, unsigned long *len)
+{
+ return ioctl(fd, RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len);
+}
+
+/* Get exclusive read access to the specified sub-buffer position */
+int kernctl_get_subbuf(int fd, unsigned long *len)
+{
+ return ioctl(fd, RING_BUFFER_GET_SUBBUF, len);
+}
+
+/* returns the size of the current sub-buffer, without padding (for mmap). */
+int kernctl_get_subbuf_size(int fd, unsigned long *len)
+{
+ return ioctl(fd, RING_BUFFER_GET_SUBBUF_SIZE, len);
+}
+
+/* Release exclusive sub-buffer access, move consumer forward. */
+int kernctl_put_next_subbuf(int fd)
+{
+ return ioctl(fd, RING_BUFFER_PUT_NEXT_SUBBUF);
+}
+
+/* Release exclusive sub-buffer access */
+int kernctl_put_subbuf(int fd)
+{
+ return ioctl(fd, RING_BUFFER_PUT_SUBBUF);
+}
+
+/* Get a snapshot of the current ring buffer producer and consumer positions */
+int kernctl_snapshot(int fd)
+{
+ return ioctl(fd, RING_BUFFER_SNAPSHOT);
+}
+
+/* Get the consumer position (iteration start) */
+int kernctl_snapshot_get_consumed(int fd, unsigned long *pos)
+{
+ return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos);
+}
+
+/* Get the producer position (iteration end) */
+int kernctl_snapshot_get_produced(int fd, unsigned long *pos)
+{
+ return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos);
+}
+
+int kernctl_start_session(int fd)
+{
+ return ioctl(fd, KERNEL_IO_SESSION_START);
+}
+
+int kernctl_stop_session(int fd)
+{
+ return ioctl(fd, KERNEL_IO_SESSION_STOP);
+}
+
/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@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
#ifndef _LTT_LIBKERNELCTL_H
#define _LTT_LIBKERNELCTL_H
+#include <lttng/lttng.h>
+
+int kernctl_create_channel(int, struct lttng_channel*);
+int kernctl_create_event(int, struct lttng_event*);
+int kernctl_create_session(int);
+int kernctl_create_stream(int);
+int kernctl_get_max_subbuf_size(int, unsigned long*);
+int kernctl_get_mmap_len(int, unsigned long*);
+int kernctl_get_mmap_read_offset(int, unsigned long*);
+int kernctl_get_next_subbuf(int);
+int kernctl_get_padded_subbuf_size(int, unsigned long*);
+int kernctl_get_subbuf(int fd, unsigned long*);
+int kernctl_get_subbuf_size(int, unsigned long *);
+int kernctl_put_next_subbuf(int);
+int kernctl_put_subbuf(int fd);
+int kernctl_snapshot(int);
+int kernctl_snapshot_get_consumed(int, unsigned long*);
+int kernctl_snapshot_get_produced(int, unsigned long*);
+int kernctl_start_session(int);
+int kernctl_stop_session(int);
+
#endif /* _LTT_LIBKERNELCTL_H */
projects / lttng-tools.git / commitdiff
