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/* SPDX-License-Identifier: LGPL-2.1 */
/*
* Copyright (C) 2012 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
*
*/
#ifndef _KBUFFER_H
#define _KBUFFER_H
#ifndef TS_SHIFT
#define TS_SHIFT 27
#endif
enum kbuffer_endian {
KBUFFER_ENDIAN_BIG,
KBUFFER_ENDIAN_LITTLE,
};
enum kbuffer_long_size {
KBUFFER_LSIZE_4,
KBUFFER_LSIZE_8,
};
enum {
KBUFFER_TYPE_PADDING = 29,
KBUFFER_TYPE_TIME_EXTEND = 30,
KBUFFER_TYPE_TIME_STAMP = 31,
};
struct kbuffer;
struct kbuffer *kbuffer_alloc(enum kbuffer_long_size size, enum kbuffer_endian endian);
void kbuffer_free(struct kbuffer *kbuf);
int kbuffer_load_subbuffer(struct kbuffer *kbuf, void *subbuffer);
void *kbuffer_read_event(struct kbuffer *kbuf, unsigned long long *ts);
void *kbuffer_next_event(struct kbuffer *kbuf, unsigned long long *ts);
unsigned long long kbuffer_timestamp(struct kbuffer *kbuf);
unsigned long long kbuffer_subbuf_timestamp(struct kbuffer *kbuf, void *subbuf);
unsigned int kbuffer_ptr_delta(struct kbuffer *kbuf, void *ptr);
void *kbuffer_translate_data(int swap, void *data, unsigned int *size);
void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset, unsigned long long *ts);
int kbuffer_curr_index(struct kbuffer *kbuf);
int kbuffer_curr_offset(struct kbuffer *kbuf);
int kbuffer_curr_size(struct kbuffer *kbuf);
int kbuffer_event_size(struct kbuffer *kbuf);
int kbuffer_missed_events(struct kbuffer *kbuf);
int kbuffer_subbuffer_size(struct kbuffer *kbuf);
void kbuffer_set_old_format(struct kbuffer *kbuf);
int kbuffer_start_of_data(struct kbuffer *kbuf);
/* Debugging */
struct kbuffer_raw_info {
int type;
int length;
unsigned long long delta;
void *next;
};
/* Read raw data */
struct kbuffer_raw_info *kbuffer_raw_get(struct kbuffer *kbuf, void *subbuf,
struct kbuffer_raw_info *info);
#endif /* _K_BUFFER_H */
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