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