linux/tools/perf/util/session.h
Adrian Hunter 103ed40e4b perf session: Add facility to peek at all events
AUX area samples are not limited in how far back in time the sample
could start. Consequently samples must be queued in advance to allow for
time-ordered processing. To achieve that, add
perf_session__peek_events() that walks and peeks at all the events.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20191115124225.5247-11-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-22 10:48:13 -03:00

143 lines
4.1 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_SESSION_H
#define __PERF_SESSION_H
#include "trace-event.h"
#include "event.h"
#include "header.h"
#include "machine.h"
#include "data.h"
#include "ordered-events.h"
#include "util/compress.h"
#include <linux/kernel.h>
#include <linux/rbtree.h>
#include <linux/perf_event.h>
struct ip_callchain;
struct symbol;
struct thread;
struct auxtrace;
struct itrace_synth_opts;
struct perf_session {
struct perf_header header;
struct machines machines;
struct evlist *evlist;
struct auxtrace *auxtrace;
struct itrace_synth_opts *itrace_synth_opts;
struct list_head auxtrace_index;
struct trace_event tevent;
struct perf_record_time_conv time_conv;
bool repipe;
bool one_mmap;
void *one_mmap_addr;
u64 one_mmap_offset;
struct ordered_events ordered_events;
struct perf_data *data;
struct perf_tool *tool;
u64 bytes_transferred;
u64 bytes_compressed;
struct zstd_data zstd_data;
struct decomp *decomp;
struct decomp *decomp_last;
};
struct decomp {
struct decomp *next;
u64 file_pos;
size_t mmap_len;
u64 head;
size_t size;
char data[];
};
struct perf_tool;
struct perf_session *perf_session__new(struct perf_data *data,
bool repipe, struct perf_tool *tool);
void perf_session__delete(struct perf_session *session);
void perf_event_header__bswap(struct perf_event_header *hdr);
int perf_session__peek_event(struct perf_session *session, off_t file_offset,
void *buf, size_t buf_sz,
union perf_event **event_ptr,
struct perf_sample *sample);
typedef int (*peek_events_cb_t)(struct perf_session *session,
union perf_event *event, u64 offset,
void *data);
int perf_session__peek_events(struct perf_session *session, u64 offset,
u64 size, peek_events_cb_t cb, void *data);
int perf_session__process_events(struct perf_session *session);
int perf_session__queue_event(struct perf_session *s, union perf_event *event,
u64 timestamp, u64 file_offset);
void perf_tool__fill_defaults(struct perf_tool *tool);
int perf_session__resolve_callchain(struct perf_session *session,
struct evsel *evsel,
struct thread *thread,
struct ip_callchain *chain,
struct symbol **parent);
bool perf_session__has_traces(struct perf_session *session, const char *msg);
void perf_event__attr_swap(struct perf_event_attr *attr);
int perf_session__create_kernel_maps(struct perf_session *session);
void perf_session__set_id_hdr_size(struct perf_session *session);
static inline
struct machine *perf_session__find_machine(struct perf_session *session, pid_t pid)
{
return machines__find(&session->machines, pid);
}
static inline
struct machine *perf_session__findnew_machine(struct perf_session *session, pid_t pid)
{
return machines__findnew(&session->machines, pid);
}
struct thread *perf_session__findnew(struct perf_session *session, pid_t pid);
int perf_session__register_idle_thread(struct perf_session *session);
size_t perf_session__fprintf(struct perf_session *session, FILE *fp);
size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp);
size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
bool (fn)(struct dso *dso, int parm), int parm);
size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp);
struct evsel *perf_session__find_first_evtype(struct perf_session *session,
unsigned int type);
int perf_session__cpu_bitmap(struct perf_session *session,
const char *cpu_list, unsigned long *cpu_bitmap);
void perf_session__fprintf_info(struct perf_session *s, FILE *fp, bool full);
struct evsel_str_handler;
#define perf_session__set_tracepoints_handlers(session, array) \
__evlist__set_tracepoints_handlers(session->evlist, array, ARRAY_SIZE(array))
extern volatile int session_done;
#define session_done() READ_ONCE(session_done)
int perf_session__deliver_synth_event(struct perf_session *session,
union perf_event *event,
struct perf_sample *sample);
int perf_event__process_id_index(struct perf_session *session,
union perf_event *event);
#endif /* __PERF_SESSION_H */