[PATCH 21/23] perf tools: Separating data file properties from session

From: Jiri Olsa
Date: Wed Jul 17 2013 - 13:51:48 EST

Removing 'fd, fd_pipe, filename, size' from struct perf_session
and replacing it with struct perf_data_file.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
---
tools/perf/builtin-annotate.c | 2 +-
tools/perf/builtin-buildid-list.c | 2 +-
tools/perf/builtin-record.c | 2 --
tools/perf/builtin-report.c | 8 +++++---
tools/perf/builtin-script.c | 2 +-
tools/perf/util/data.h | 15 +++++++++++++++
tools/perf/util/header.c | 30 ++++++++++++++++++++----------
tools/perf/util/header.h | 1 +
tools/perf/util/session.c | 36 +++++++++++++++++++-----------------
tools/perf/util/session.h | 5 +----
10 files changed, 64 insertions(+), 39 deletions(-)

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 048576f..a032a28 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -247,7 +247,7 @@ static int __cmd_annotate(struct perf_annotate *ann)
}

if (total_nr_samples == 0) {
- ui__error("The %s file has no samples!\n", session->filename);
+ ui__error("The %s file has no samples!\n", file.path);
goto out_delete;
}

diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
index 0164c1c..ed3873b 100644
--- a/tools/perf/builtin-buildid-list.c
+++ b/tools/perf/builtin-buildid-list.c
@@ -73,7 +73,7 @@ static int perf_session__list_build_ids(bool force, bool with_hits)
* in pipe-mode, the only way to get the buildids is to parse
* the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
*/
- if (with_hits || session->fd_pipe)
+ if (with_hits || perf_data_file__is_pipe(&file))
perf_session__process_events(session, &build_id__mark_dso_hit_ops);

perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 4754ec2..960908da 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -255,7 +255,6 @@ out:

static int process_buildids(struct perf_record *rec)
{
- struct perf_data_file *file = rec->file;
struct perf_session *session = rec->session;
u64 data_offset = PERF_FILE_HEADER__DATA_OFFSET;
u64 size = session->header.data_size;
@@ -263,7 +262,6 @@ static int process_buildids(struct perf_record *rec)
if (size == 0)
return 0;

- rec->session->fd = file->fd;
return __perf_session__process_events(session, data_offset,
size - data_offset, size,
&build_id__mark_dso_hit_ops);
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 7904173..f90f4d6 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -369,8 +369,9 @@ static int perf_report__setup_sample_type(struct perf_report *rep)
{
struct perf_session *self = rep->session;
u64 sample_type = perf_evlist__sample_type(self->evlist);
+ bool is_pipe = perf_data_file__is_pipe(self->file);

- if (!self->fd_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
+ if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
if (sort__has_parent) {
ui__error("Selected --sort parent, but no "
"callchain data. Did you call "
@@ -393,7 +394,7 @@ static int perf_report__setup_sample_type(struct perf_report *rep)
}

if (sort__mode == SORT_MODE__BRANCH) {
- if (!self->fd_pipe &&
+ if (!is_pipe &&
!(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
ui__error("Selected -b but no branch data. "
"Did you call perf record without -b?\n");
@@ -491,6 +492,7 @@ static int __cmd_report(struct perf_report *rep)
struct map *kernel_map;
struct kmap *kernel_kmap;
const char *help = "For a higher level overview, try: perf report --sort comm,dso";
+ struct perf_data_file *file = session->file;

signal(SIGINT, sig_handler);

@@ -572,7 +574,7 @@ static int __cmd_report(struct perf_report *rep)
}

if (nr_samples == 0) {
- ui__error("The %s file has no samples!\n", session->filename);
+ ui__error("The %s file has no samples!\n", file->path);
return 0;
}

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index bbd524c..e0269bf 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1501,7 +1501,7 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
return -1;
}

- input = open(session->filename, O_RDONLY); /* input_name */
+ input = open(file.path, O_RDONLY); /* input_name */
if (input < 0) {
perror("failed to open file");
return -1;
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h
index d6c262e..8c2df80 100644
--- a/tools/perf/util/data.h
+++ b/tools/perf/util/data.h
@@ -27,6 +27,21 @@ static inline bool perf_data_file__is_write(struct perf_data_file *file)
return file->mode == PERF_DATA_MODE_WRITE;
}

+static inline int perf_data_file__is_pipe(struct perf_data_file *file)
+{
+ return file->is_pipe;
+}
+
+static inline int perf_data_file__fd(struct perf_data_file *file)
+{
+ return file->fd;
+}
+
+static inline unsigned long perf_data_file__size(struct perf_data_file *file)
+{
+ return file->size;
+}
+
int perf_data_file__open(struct perf_data_file *file);
void perf_data_file__close(struct perf_data_file *file);

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index f5b7529..cb986b5 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2174,7 +2174,7 @@ int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full)
{
struct header_print_data hd;
struct perf_header *header = &session->header;
- int fd = session->fd;
+ int fd = perf_data_file__fd(session->file);
hd.fp = fp;
hd.full = full;

@@ -2642,8 +2642,10 @@ static int perf_header__read_pipe(struct perf_session *session)
{
struct perf_header *header = &session->header;
struct perf_pipe_file_header f_header;
+ struct perf_data_file *file = session->file;

- if (perf_file_header__read_pipe(&f_header, header, session->fd,
+ if (perf_file_header__read_pipe(&f_header, header,
+ perf_data_file__fd(file),
session->repipe) < 0) {
pr_debug("incompatible file format\n");
return -EINVAL;
@@ -2745,12 +2747,13 @@ static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist,
static int __perf_session__read_header_v2(struct perf_session *session,
struct perf_file_header *header)
{
+ struct perf_data_file *file = session->file;
struct perf_header *ph = &session->header;
struct perf_file_header_v2 *v2 = &header->v2;
struct perf_file_attr f_attr;
u64 f_id;
int nr_attrs, nr_ids, i, j;
- int fd = session->fd;
+ int fd = perf_data_file__fd(file);

session->evlist = perf_evlist__new();
if (session->evlist == NULL)
@@ -2844,6 +2847,8 @@ static int perf_session__read_header_v3(struct perf_session *session,
{
struct perf_header *ph = &session->header;
struct perf_file_header_v3 *v3 = &header->v3;
+ struct perf_data_file *file = session->file;
+ int fd = perf_data_file__fd(file);

memcpy(&ph->adds_features, &v3->adds_features,
sizeof(ph->adds_features));
@@ -2852,7 +2857,7 @@ static int perf_session__read_header_v3(struct perf_session *session,
ph->data_size = v3->data.size;
ph->feat_offset = v3->features.offset;

- perf_header__process_sections(ph, session->fd, &session->pevent,
+ perf_header__process_sections(ph, fd, &session->pevent,
perf_file_section__process);

return 0;
@@ -2862,8 +2867,10 @@ static int perf_header_read_file(struct perf_session *session)
{
struct perf_file_header header;
struct perf_header *ph = &session->header;
+ struct perf_data_file *file = session->file;

- if (perf_file_header__read(&header, &session->header, session->fd))
+ if (perf_file_header__read(&header, &session->header,
+ perf_data_file__fd(file)))
return -1;

/* read version specific data */
@@ -2875,7 +2882,9 @@ static int perf_header_read_file(struct perf_session *session)

int perf_session__read_header(struct perf_session *session)
{
- if (session->fd_pipe)
+ struct perf_data_file *file = session->file;
+
+ if (perf_data_file__is_pipe(file))
return perf_header__read_pipe(session);

return perf_header_read_file(session) < 0 ? -EINVAL : 0;
@@ -3025,18 +3034,19 @@ int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused,
struct perf_session *session)
{
ssize_t size_read, padding, size = event->tracing_data.size;
- off_t offset = lseek(session->fd, 0, SEEK_CUR);
+ int fd = perf_data_file__fd(session->file);
+ off_t offset = lseek(fd, 0, SEEK_CUR);
char buf[BUFSIZ];

/* setup for reading amidst mmap */
- lseek(session->fd, offset + sizeof(struct tracing_data_event),
+ lseek(fd, offset + sizeof(struct tracing_data_event),
SEEK_SET);

- size_read = trace_report(session->fd, &session->pevent,
+ size_read = trace_report(fd, &session->pevent,
session->repipe);
padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read;

- if (readn(session->fd, buf, padding) < 0) {
+ if (readn(fd, buf, padding) < 0) {
pr_err("%s: reading input file", __func__);
return -1;
}
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 4982e04..a5875f2 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -6,6 +6,7 @@
#include <stdbool.h>
#include "types.h"
#include "event.h"
+#include "data.h"

#include <linux/bitmap.h>

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index cfd9735..7a92450 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -18,17 +18,16 @@

static int perf_session__open(struct perf_session *self)
{
- if (self->fd_pipe) {
- if (perf_session__read_header(self) < 0)
- pr_err("incompatible file format (rerun with -v to learn more)");
- return 0;
- }
+ struct perf_data_file *file = self->file;

if (perf_session__read_header(self) < 0) {
pr_err("incompatible file format (rerun with -v to learn more)");
goto out_close;
}

+ if (perf_data_file__is_pipe(file))
+ return 0;
+
if (!perf_evlist__valid_sample_type(self->evlist)) {
pr_err("non matching sample_type");
goto out_close;
@@ -85,10 +84,7 @@ struct perf_session *perf_session__new(struct perf_data_file *file,
if (perf_data_file__open(file))
goto out_delete;

- self->fd = file->fd;
- self->fd_pipe = file->is_pipe;
- self->filename = file->path;
- self->size = file->size;
+ self->file = file;

if (perf_data_file__is_read(file)) {
if (perf_session__open(self) < 0)
@@ -156,7 +152,8 @@ void perf_session__delete(struct perf_session *self)
perf_session__delete_threads(self);
perf_session_env__delete(&self->header.env);
machines__exit(&self->machines);
- close(self->fd);
+ if (self->file)
+ perf_data_file__close(self->file);
free(self);
vdso__exit();
}
@@ -876,6 +873,7 @@ static int perf_session__preprocess_sample(struct perf_session *session,
static int perf_session__process_user_event(struct perf_session *session, union perf_event *event,
struct perf_tool *tool, u64 file_offset)
{
+ int fd = perf_data_file__fd(session->file);
int err;

dump_event(session, event, file_offset, NULL);
@@ -889,7 +887,7 @@ static int perf_session__process_user_event(struct perf_session *session, union
return err;
case PERF_RECORD_HEADER_TRACING_DATA:
/* setup for reading amidst mmap */
- lseek(session->fd, file_offset, SEEK_SET);
+ lseek(fd, file_offset, SEEK_SET);
return tool->tracing_data(tool, event, session);
case PERF_RECORD_HEADER_BUILD_ID:
return tool->build_id(tool, event, session);
@@ -1020,6 +1018,7 @@ volatile int session_done;
static int __perf_session__process_pipe_events(struct perf_session *self,
struct perf_tool *tool)
{
+ int fd = perf_data_file__fd(self->file);
union perf_event *event;
uint32_t size, cur_size = 0;
void *buf = NULL;
@@ -1038,7 +1037,7 @@ static int __perf_session__process_pipe_events(struct perf_session *self,
return -errno;
more:
event = buf;
- err = readn(self->fd, event, sizeof(struct perf_event_header));
+ err = readn(fd, event, sizeof(struct perf_event_header));
if (err <= 0) {
if (err == 0)
goto done;
@@ -1070,7 +1069,7 @@ more:
p += sizeof(struct perf_event_header);

if (size - sizeof(struct perf_event_header)) {
- err = readn(self->fd, p, size - sizeof(struct perf_event_header));
+ err = readn(fd, p, size - sizeof(struct perf_event_header));
if (err <= 0) {
if (err == 0) {
pr_err("unexpected end of event stream\n");
@@ -1149,6 +1148,7 @@ int __perf_session__process_events(struct perf_session *session,
u64 data_offset, u64 data_size,
u64 file_size, struct perf_tool *tool)
{
+ int fd = perf_data_file__fd(session->file);
u64 head, page_offset, file_offset, file_pos, progress_next;
int err, mmap_prot, mmap_flags, map_idx = 0;
size_t mmap_size;
@@ -1181,7 +1181,7 @@ int __perf_session__process_events(struct perf_session *session,
mmap_flags = MAP_PRIVATE;
}
remap:
- buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd,
+ buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
file_offset);
if (buf == MAP_FAILED) {
pr_err("failed to mmap file\n");
@@ -1243,16 +1243,17 @@ out_err:
int perf_session__process_events(struct perf_session *self,
struct perf_tool *tool)
{
+ u64 size = perf_data_file__size(self->file);
int err;

if (perf_session__register_idle_thread(self) == NULL)
return -ENOMEM;

- if (!self->fd_pipe)
+ if (!perf_data_file__is_pipe(self->file))
err = __perf_session__process_events(self,
self->header.data_offset,
self->header.data_size,
- self->size, tool);
+ size, tool);
else
err = __perf_session__process_pipe_events(self, tool);

@@ -1454,13 +1455,14 @@ int perf_session__cpu_bitmap(struct perf_session *session,
void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
bool full)
{
+ int fd = perf_data_file__fd(session->file);
struct stat st;
int ret;

if (session == NULL || fp == NULL)
return;

- ret = fstat(session->fd, &st);
+ ret = fstat(fd, &st);
if (ret == -1)
return;

diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index aa8fc69..650ce35 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -30,16 +30,13 @@ struct ordered_samples {

struct perf_session {
struct perf_header header;
- unsigned long size;
struct machines machines;
struct perf_evlist *evlist;
struct pevent *pevent;
struct events_stats stats;
- int fd;
- bool fd_pipe;
bool repipe;
struct ordered_samples ordered_samples;
- const char *filename;
+ struct perf_data_file *file;
};

struct perf_tool;
--
1.7.11.7

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