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Date: Tue, 15 Jan 2013 15:34:05 -0300
From: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Paul Mackerras <paulus@...ba.org>,
Ingo Molnar <mingo@...nel.org>,
LKML <linux-kernel@...r.kernel.org>,
Jiri Olsa <jolsa@...hat.com>,
Stephane Eranian <eranian@...gle.com>,
Namhyung Kim <namhyung.kim@....com>,
Pekka Enberg <penberg@...nel.org>
Subject: Re: [PATCH 08/13] perf gtk/browser: Add support for event group view
Em Tue, Jan 15, 2013 at 04:31:52PM +0900, Namhyung Kim escreveu:
> From: Namhyung Kim <namhyung.kim@....com>
>
> Show group members' overhead also when showing the leader's if event
> group is enabled. Use macro for defining hpp functions which looks
> almost identical.
>
> Unlike other hpp backend, GTK+ needs to print dummy 0.00% output since
> it's displayed with variable width fonts. So that simply skipping
> with %*s trick won't work well here.
I'm illiterate on GTK+ internals, but I kinda expected that it could
provide a way to avoid such things, i.e. a way to position the cursor
in such circumstance without having to actually print the '0.00%' :-\
- Arnaldo
> Cc: Jiri Olsa <jolsa@...hat.com>
> Cc: Stephane Eranian <eranian@...gle.com>
> Cc: Pekka Enberg <penberg@...nel.org>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
> tools/perf/ui/gtk/hists.c | 114 +++++++++++++++++++++++++++++++++++++---------
> 1 file changed, 92 insertions(+), 22 deletions(-)
>
> diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c
> index c03da79d524f..a4d951ea919a 100644
> --- a/tools/perf/ui/gtk/hists.c
> +++ b/tools/perf/ui/gtk/hists.c
> @@ -8,32 +8,102 @@
>
> #define MAX_COLUMNS 32
>
> -#define HPP__COLOR_FN(_name, _field) \
> -static int perf_gtk__hpp_color_ ## _name(struct perf_hpp *hpp, \
> - struct hist_entry *he) \
> +static int perf_gtk__percent_color_snprintf(char *buf, size_t size,
> + double percent)
> +{
> + int ret = 0;
> + const char *markup;
> +
> + markup = perf_gtk__get_percent_color(percent);
> + if (markup)
> + ret += scnprintf(buf, size, markup);
> +
> + ret += scnprintf(buf + ret, size - ret, "%6.2f%%", percent);
> +
> + if (markup)
> + ret += scnprintf(buf + ret, size - ret, "</span>");
> +
> + return ret;
> +}
> +
> +
> +static int __hpp__color_fmt(struct perf_hpp *hpp, struct hist_entry *he,
> + u64 (*get_field)(struct hist_entry *))
> +{
> + int ret;
> + double percent = 0.0;
> + struct hists *hists = he->hists;
> +
> + if (hists->stats.total_period)
> + percent = 100.0 * get_field(he) / hists->stats.total_period;
> +
> + ret = perf_gtk__percent_color_snprintf(hpp->buf, hpp->size, percent);
> +
> + if (symbol_conf.event_group) {
> + int prev_idx, idx_delta;
> + struct perf_evsel *evsel = hists_to_evsel(hists);
> + struct hist_entry *pair;
> + int nr_members = evsel->nr_members;
> +
> + if (nr_members <= 1)
> + return ret;
> +
> + prev_idx = perf_evsel__group_idx(evsel);
> +
> + list_for_each_entry(pair, &he->pairs.head, pairs.node) {
> + u64 period = get_field(pair);
> + u64 total = pair->hists->stats.total_period;
> +
> + evsel = hists_to_evsel(pair->hists);
> + idx_delta = perf_evsel__group_idx(evsel) - prev_idx - 1;
> +
> + while (idx_delta--) {
> + ret += scnprintf(hpp->buf + ret, hpp->size -ret, " ");
> + ret += perf_gtk__percent_color_snprintf(hpp->buf + ret,
> + hpp->size - ret,
> + 0.0);
> + }
> +
> + percent = 100.0 * period / total;
> + ret += scnprintf(hpp->buf + ret, hpp->size -ret, " ");
> + ret += perf_gtk__percent_color_snprintf(hpp->buf + ret,
> + hpp->size - ret,
> + percent);
> +
> + prev_idx = perf_evsel__group_idx(evsel);
> + }
> +
> + idx_delta = nr_members - prev_idx - 1;
> +
> + while (idx_delta--) {
> + ret += scnprintf(hpp->buf + ret, hpp->size -ret, " ");
> + ret += perf_gtk__percent_color_snprintf(hpp->buf + ret,
> + hpp->size - ret,
> + 0.0);
> + }
> + }
> + return ret;
> +}
> +
> +#define __HPP_COLOR_PERCENT_FN(_type, _field) \
> +static u64 he_get_##_field(struct hist_entry *he) \
> { \
> - struct hists *hists = he->hists; \
> - double percent = 100.0 * he->stat._field / hists->stats.total_period; \
> - const char *markup; \
> - int ret = 0; \
> + return he->stat._field; \
> +} \
> \
> - markup = perf_gtk__get_percent_color(percent); \
> - if (markup) \
> - ret += scnprintf(hpp->buf, hpp->size, "%s", markup); \
> - ret += scnprintf(hpp->buf + ret, hpp->size - ret, "%6.2f%%", percent); \
> - if (markup) \
> - ret += scnprintf(hpp->buf + ret, hpp->size - ret, "</span>"); \
> - \
> - return ret; \
> +static int perf_gtk__hpp_color_##_type(struct perf_hpp *hpp, \
> + struct hist_entry *he) \
> +{ \
> + return __hpp__color_fmt(hpp, he, he_get_##_field); \
> }
>
> -HPP__COLOR_FN(overhead, period)
> -HPP__COLOR_FN(overhead_sys, period_sys)
> -HPP__COLOR_FN(overhead_us, period_us)
> -HPP__COLOR_FN(overhead_guest_sys, period_guest_sys)
> -HPP__COLOR_FN(overhead_guest_us, period_guest_us)
> +__HPP_COLOR_PERCENT_FN(overhead, period)
> +__HPP_COLOR_PERCENT_FN(overhead_sys, period_sys)
> +__HPP_COLOR_PERCENT_FN(overhead_us, period_us)
> +__HPP_COLOR_PERCENT_FN(overhead_guest_sys, period_guest_sys)
> +__HPP_COLOR_PERCENT_FN(overhead_guest_us, period_guest_us)
>
> -#undef HPP__COLOR_FN
> +#undef __HPP_COLOR_PERCENT_FN
>
>
> void perf_gtk__init_hpp(void)
> @@ -70,6 +140,7 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists)
> struct perf_hpp hpp = {
> .buf = s,
> .size = sizeof(s),
> + .ptr = hists_to_evsel(hists),
> };
>
> nr_cols = 0;
> @@ -94,7 +165,6 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists)
>
> perf_hpp__for_each_format(fmt) {
> fmt->header(&hpp);
> -
> gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(view),
> -1, s,
> renderer, "markup",
> --
> 1.7.11.7
--
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