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Subject[tip:perf/core] perf stdio: Separate headers output
Commit-ID:  36592ebb73782aa2304a71f9a3b586566c2892ee
Gitweb: http://git.kernel.org/tip/36592ebb73782aa2304a71f9a3b586566c2892ee
Author: Jiri Olsa <jolsa@kernel.org>
AuthorDate: Tue, 14 Jun 2016 20:19:14 +0200
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 15 Jun 2016 10:44:26 -0300

perf stdio: Separate headers output

Introducing hists__fprintf_headers function to separate the code that
displays headers.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1465928361-2442-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/ui/stdio/hist.c | 59 +++++++++++++++++++++++-----------------------
1 file changed, 30 insertions(+), 29 deletions(-)

diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index 560eb47..91353ca 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -622,36 +622,18 @@ static int print_hierarchy_header(struct hists *hists, struct perf_hpp *hpp,
return 2;
}

-size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
- int max_cols, float min_pcnt, FILE *fp)
+static int hists__fprintf_headers(struct hists *hists, FILE *fp)
{
struct perf_hpp_fmt *fmt;
struct perf_hpp_list_node *fmt_node;
- struct rb_node *nd;
- size_t ret = 0;
unsigned int width;
const char *sep = symbol_conf.field_sep;
- int nr_rows = 0;
char bf[96];
struct perf_hpp dummy_hpp = {
.buf = bf,
.size = sizeof(bf),
};
bool first = true;
- size_t linesz;
- char *line = NULL;
- unsigned indent;
-
- init_rem_hits();
-
- hists__for_each_format(hists, fmt)
- perf_hpp__reset_width(fmt, hists);
-
- if (symbol_conf.col_width_list_str)
- perf_hpp__set_user_width(symbol_conf.col_width_list_str);
-
- if (!show_header)
- goto print_entries;

fprintf(fp, "# ");

@@ -660,8 +642,7 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
perf_hpp_list__for_each_format(&fmt_node->hpp, fmt)
perf_hpp__reset_width(fmt, hists);
}
- nr_rows += print_hierarchy_header(hists, &dummy_hpp, sep, fp);
- goto print_entries;
+ return print_hierarchy_header(hists, &dummy_hpp, sep, fp);
}

hists__for_each_format(hists, fmt) {
@@ -678,11 +659,9 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
}

fprintf(fp, "\n");
- if (max_rows && ++nr_rows >= max_rows)
- goto out;

if (sep)
- goto print_entries;
+ return 1;

first = true;

@@ -705,14 +684,36 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
}

fprintf(fp, "\n");
- if (max_rows && ++nr_rows >= max_rows)
- goto out;
-
fprintf(fp, "#\n");
- if (max_rows && ++nr_rows >= max_rows)
+ return 3;
+}
+
+size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
+ int max_cols, float min_pcnt, FILE *fp)
+{
+ struct perf_hpp_fmt *fmt;
+ struct rb_node *nd;
+ size_t ret = 0;
+ const char *sep = symbol_conf.field_sep;
+ int nr_rows = 0;
+ size_t linesz;
+ char *line = NULL;
+ unsigned indent;
+
+ init_rem_hits();
+
+ hists__for_each_format(hists, fmt)
+ perf_hpp__reset_width(fmt, hists);
+
+ if (symbol_conf.col_width_list_str)
+ perf_hpp__set_user_width(symbol_conf.col_width_list_str);
+
+ if (show_header)
+ nr_rows += hists__fprintf_headers(hists, fp);
+
+ if (max_rows && nr_rows >= max_rows)
goto out;

-print_entries:
linesz = hists__sort_list_width(hists) + 3 + 1;
linesz += perf_hpp__color_overhead();
line = malloc(linesz);
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