linux/tools/perf/util/ordered-events.h
Jiri Olsa 83356b3d12 perf ordered_events: Add first_time() method
To get the timestamp in the first event in the queue.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Dmitry Levin <ldv@altlinux.org>
Cc: Eugene Syromiatnikov <esyr@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Luis Cláudio Gonçalves <lclaudio@uudg.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/n/tip-appp27jw1ul8kgg872j43r5o@git.kernel.org
[ split from a larger patch ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-12-17 15:02:17 -03:00

78 lines
1.9 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ORDERED_EVENTS_H
#define __ORDERED_EVENTS_H
#include <linux/types.h>
struct perf_sample;
struct ordered_event {
u64 timestamp;
u64 file_offset;
union perf_event *event;
struct list_head list;
};
enum oe_flush {
OE_FLUSH__NONE,
OE_FLUSH__FINAL,
OE_FLUSH__ROUND,
OE_FLUSH__HALF,
OE_FLUSH__TOP,
OE_FLUSH__TIME,
};
struct ordered_events;
typedef int (*ordered_events__deliver_t)(struct ordered_events *oe,
struct ordered_event *event);
struct ordered_events_buffer {
struct list_head list;
struct ordered_event event[0];
};
struct ordered_events {
u64 last_flush;
u64 next_flush;
u64 max_timestamp;
u64 max_alloc_size;
u64 cur_alloc_size;
struct list_head events;
struct list_head cache;
struct list_head to_free;
struct ordered_events_buffer *buffer;
struct ordered_event *last;
ordered_events__deliver_t deliver;
int buffer_idx;
unsigned int nr_events;
enum oe_flush last_flush_type;
u32 nr_unordered_events;
bool copy_on_queue;
void *data;
};
int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
u64 timestamp, u64 file_offset);
void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event);
int ordered_events__flush(struct ordered_events *oe, enum oe_flush how);
int ordered_events__flush_time(struct ordered_events *oe, u64 timestamp);
void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver,
void *data);
void ordered_events__free(struct ordered_events *oe);
void ordered_events__reinit(struct ordered_events *oe);
u64 ordered_events__first_time(struct ordered_events *oe);
static inline
void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size)
{
oe->max_alloc_size = size;
}
static inline
void ordered_events__set_copy_on_queue(struct ordered_events *oe, bool copy)
{
oe->copy_on_queue = copy;
}
#endif /* __ORDERED_EVENTS_H */