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Date: Thu, 19 Jun 2014 12:38:51 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Jiri Olsa <jolsa@...nel.org>
Cc: linux-kernel@...r.kernel.org,
Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
David Ahern <dsahern@...il.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Ingo Molnar <mingo@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Paul Mackerras <paulus@...ba.org>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH 1/5] perf tools: Factor ui_browser ops out of ui_browser
struct
Em Thu, Jun 19, 2014 at 01:41:12PM +0200, Jiri Olsa escreveu:
> Separating ops out of 'struct ui_browser' into
> 'struct ui_browser_ops'.
You stated what you did, and that helps in understanding what this patch
is about, now we only need to have a paragraph on _why_ this is needed
:-)
So, what is the intent of this patch? Why do we need it?
> Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
> Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
> Cc: David Ahern <dsahern@...il.com>
> Cc: Frederic Weisbecker <fweisbec@...il.com>
> Cc: Ingo Molnar <mingo@...nel.org>
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
> tools/perf/ui/browser.c | 37 ++++++++++++++++++++++---------------
> tools/perf/ui/browser.h | 28 +++++++++++++++++-----------
> tools/perf/ui/browsers/annotate.c | 19 +++++++++++--------
> tools/perf/ui/browsers/header.c | 8 +++++---
> tools/perf/ui/browsers/hists.c | 14 ++++++++------
> tools/perf/ui/browsers/map.c | 8 +++++---
> tools/perf/ui/browsers/scripts.c | 2 +-
> tools/perf/ui/tui/util.c | 8 +++++---
> 8 files changed, 74 insertions(+), 50 deletions(-)
>
> diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
> index 3ccf6e1..e6f96be 100644
> --- a/tools/perf/ui/browser.c
> +++ b/tools/perf/ui/browser.c
> @@ -46,12 +46,18 @@ void ui_browser__gotorc(struct ui_browser *browser, int y, int x)
> SLsmg_gotorc(browser->y + y, browser->x + x);
> }
>
> +static bool ui_browser__filter(struct ui_browser *browser, void *entry)
> +{
> + return browser->ops.filter ? browser->ops.filter(browser, entry) :
> + false;
> +}
> +
> static struct list_head *
> ui_browser__list_head_filter_entries(struct ui_browser *browser,
> struct list_head *pos)
> {
> do {
> - if (!browser->filter || !browser->filter(browser, pos))
> + if (!ui_browser__filter(browser, pos))
> return pos;
> pos = pos->next;
> } while (pos != browser->entries);
> @@ -64,7 +70,7 @@ ui_browser__list_head_filter_prev_entries(struct ui_browser *browser,
> struct list_head *pos)
> {
> do {
> - if (!browser->filter || !browser->filter(browser, pos))
> + if (!ui_browser__filter(browser, pos))
> return pos;
> pos = pos->prev;
> } while (pos != browser->entries);
> @@ -149,7 +155,7 @@ unsigned int ui_browser__rb_tree_refresh(struct ui_browser *browser)
>
> while (nd != NULL) {
> ui_browser__gotorc(browser, row, 0);
> - browser->write(browser, nd, row);
> + browser->ops.write(browser, nd, row);
> if (++row == browser->height)
> break;
> nd = rb_next(nd);
> @@ -227,7 +233,7 @@ bool ui_browser__dialog_yesno(struct ui_browser *browser, const char *text)
> void ui_browser__reset_index(struct ui_browser *browser)
> {
> browser->index = browser->top_idx = 0;
> - browser->seek(browser, 0, SEEK_SET);
> + browser->ops.seek(browser, 0, SEEK_SET);
> }
>
> void __ui_browser__show_title(struct ui_browser *browser, const char *title)
> @@ -302,7 +308,7 @@ static int __ui_browser__refresh(struct ui_browser *browser)
> int row;
> int width = browser->width;
>
> - row = browser->refresh(browser);
> + row = browser->ops.refresh(browser);
> ui_browser__set_color(browser, HE_COLORSET_NORMAL);
>
> if (!browser->use_navkeypressed || browser->navkeypressed)
> @@ -346,11 +352,12 @@ void ui_browser__update_nr_entries(struct ui_browser *browser, u32 nr_entries)
> }
>
> browser->top = NULL;
> - browser->seek(browser, browser->top_idx, SEEK_SET);
> + browser->ops.seek(browser, browser->top_idx, SEEK_SET);
> }
>
> int ui_browser__run(struct ui_browser *browser, int delay_secs)
> {
> + struct ui_browser_ops *ops = &browser->ops;
> int err, key;
>
> while (1) {
> @@ -391,7 +398,7 @@ int ui_browser__run(struct ui_browser *browser, int delay_secs)
> ++browser->index;
> if (browser->index == browser->top_idx + browser->height) {
> ++browser->top_idx;
> - browser->seek(browser, +1, SEEK_CUR);
> + ops->seek(browser, +1, SEEK_CUR);
> }
> break;
> case K_UP:
> @@ -400,7 +407,7 @@ int ui_browser__run(struct ui_browser *browser, int delay_secs)
> --browser->index;
> if (browser->index < browser->top_idx) {
> --browser->top_idx;
> - browser->seek(browser, -1, SEEK_CUR);
> + ops->seek(browser, -1, SEEK_CUR);
> }
> break;
> case K_PGDN:
> @@ -413,7 +420,7 @@ int ui_browser__run(struct ui_browser *browser, int delay_secs)
> offset = browser->nr_entries - 1 - browser->index;
> browser->index += offset;
> browser->top_idx += offset;
> - browser->seek(browser, +offset, SEEK_CUR);
> + ops->seek(browser, +offset, SEEK_CUR);
> break;
> case K_PGUP:
> if (browser->top_idx == 0)
> @@ -426,7 +433,7 @@ int ui_browser__run(struct ui_browser *browser, int delay_secs)
>
> browser->index -= offset;
> browser->top_idx -= offset;
> - browser->seek(browser, -offset, SEEK_CUR);
> + ops->seek(browser, -offset, SEEK_CUR);
> break;
> case K_HOME:
> ui_browser__reset_index(browser);
> @@ -438,7 +445,7 @@ int ui_browser__run(struct ui_browser *browser, int delay_secs)
>
> browser->index = browser->nr_entries - 1;
> browser->top_idx = browser->index - offset;
> - browser->seek(browser, -offset, SEEK_END);
> + ops->seek(browser, -offset, SEEK_END);
> break;
> default:
> return key;
> @@ -459,9 +466,9 @@ unsigned int ui_browser__list_head_refresh(struct ui_browser *browser)
> pos = browser->top;
>
> list_for_each_from(pos, head) {
> - if (!browser->filter || !browser->filter(browser, pos)) {
> + if (!ui_browser__filter(browser, pos)) {
> ui_browser__gotorc(browser, row, 0);
> - browser->write(browser, pos, row);
> + browser->ops.write(browser, pos, row);
> if (++row == browser->height)
> break;
> }
> @@ -584,9 +591,9 @@ unsigned int ui_browser__argv_refresh(struct ui_browser *browser)
>
> pos = (char **)browser->top;
> while (idx < browser->nr_entries) {
> - if (!browser->filter || !browser->filter(browser, *pos)) {
> + if (!ui_browser__filter(browser, *pos)) {
> ui_browser__gotorc(browser, row, 0);
> - browser->write(browser, pos, row);
> + browser->ops.write(browser, pos, row);
> if (++row == browser->height)
> break;
> }
> diff --git a/tools/perf/ui/browser.h b/tools/perf/ui/browser.h
> index 03d4d62..5887ca7 100644
> --- a/tools/perf/ui/browser.h
> +++ b/tools/perf/ui/browser.h
> @@ -11,21 +11,27 @@
> #define HE_COLORSET_ADDR 55
> #define HE_COLORSET_ROOT 56
>
> -struct ui_browser {
> - u64 index, top_idx;
> - void *top, *entries;
> - u16 y, x, width, height;
> - int current_color;
> - void *priv;
> - const char *title;
> - char *helpline;
> +struct ui_browser;
> +
> +struct ui_browser_ops {
> unsigned int (*refresh)(struct ui_browser *browser);
> void (*write)(struct ui_browser *browser, void *entry, int row);
> void (*seek)(struct ui_browser *browser, off_t offset, int whence);
> bool (*filter)(struct ui_browser *browser, void *entry);
> - u32 nr_entries;
> - bool navkeypressed;
> - bool use_navkeypressed;
> +};
> +
> +struct ui_browser {
> + u64 index, top_idx;
> + void *top, *entries;
> + u16 y, x, width, height;
> + int current_color;
> + void *priv;
> + const char *title;
> + char *helpline;
> + u32 nr_entries;
> + bool navkeypressed;
> + bool use_navkeypressed;
> + struct ui_browser_ops ops;
> };
>
> int ui_browser__set_color(struct ui_browser *browser, int color);
> diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
> index f0697a3..bc4bcfa 100644
> --- a/tools/perf/ui/browsers/annotate.c
> +++ b/tools/perf/ui/browsers/annotate.c
> @@ -388,8 +388,9 @@ static bool annotate_browser__toggle_source(struct annotate_browser *browser)
> struct disasm_line *dl;
> struct browser_disasm_line *bdl;
> off_t offset = browser->b.index - browser->b.top_idx;
> + struct ui_browser_ops *ops = &browser->b.ops;
>
> - browser->b.seek(&browser->b, offset, SEEK_CUR);
> + ops->seek(&browser->b, offset, SEEK_CUR);
> dl = list_entry(browser->b.top, struct disasm_line, node);
> bdl = disasm_line__browser(dl);
>
> @@ -399,13 +400,13 @@ static bool annotate_browser__toggle_source(struct annotate_browser *browser)
>
> browser->b.nr_entries = browser->nr_entries;
> annotate_browser__opts.hide_src_code = false;
> - browser->b.seek(&browser->b, -offset, SEEK_CUR);
> + ops->seek(&browser->b, -offset, SEEK_CUR);
> browser->b.top_idx = bdl->idx - offset;
> browser->b.index = bdl->idx;
> } else {
> if (bdl->idx_asm < 0) {
> ui_helpline__puts("Only available for assembly lines.");
> - browser->b.seek(&browser->b, -offset, SEEK_CUR);
> + ops->seek(&browser->b, -offset, SEEK_CUR);
> return false;
> }
>
> @@ -414,7 +415,7 @@ static bool annotate_browser__toggle_source(struct annotate_browser *browser)
>
> browser->b.nr_entries = browser->nr_asm_entries;
> annotate_browser__opts.hide_src_code = true;
> - browser->b.seek(&browser->b, -offset, SEEK_CUR);
> + ops->seek(&browser->b, -offset, SEEK_CUR);
> browser->b.top_idx = bdl->idx_asm - offset;
> browser->b.index = bdl->idx_asm;
> }
> @@ -882,10 +883,12 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map,
> };
> struct annotate_browser browser = {
> .b = {
> - .refresh = annotate_browser__refresh,
> - .seek = ui_browser__list_head_seek,
> - .write = annotate_browser__write,
> - .filter = disasm_line__filter,
> + .ops = {
> + .refresh = annotate_browser__refresh,
> + .seek = ui_browser__list_head_seek,
> + .write = annotate_browser__write,
> + .filter = disasm_line__filter,
> + },
> .priv = &ms,
> .use_navkeypressed = true,
> },
> diff --git a/tools/perf/ui/browsers/header.c b/tools/perf/ui/browsers/header.c
> index 89c16b9..69f1929 100644
> --- a/tools/perf/ui/browsers/header.c
> +++ b/tools/perf/ui/browsers/header.c
> @@ -81,10 +81,12 @@ static int ui__list_menu(int argc, char * const argv[])
> {
> struct ui_browser menu = {
> .entries = (void *)argv,
> - .refresh = ui_browser__argv_refresh,
> - .seek = ui_browser__argv_seek,
> - .write = ui_browser__argv_write,
> .nr_entries = argc,
> + .ops = {
> + .refresh = ui_browser__argv_refresh,
> + .seek = ui_browser__argv_seek,
> + .write = ui_browser__argv_write,
> + },
> };
>
> return list_menu__run(&menu);
> diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
> index 04a229a..7cb6309 100644
> --- a/tools/perf/ui/browsers/hists.c
> +++ b/tools/perf/ui/browsers/hists.c
> @@ -1190,8 +1190,8 @@ static struct hist_browser *hist_browser__new(struct hists *hists)
>
> if (browser) {
> browser->hists = hists;
> - browser->b.refresh = hist_browser__refresh;
> - browser->b.seek = ui_browser__hists_seek;
> + browser->b.ops.refresh = hist_browser__refresh;
> + browser->b.ops.seek = ui_browser__hists_seek;
> browser->b.use_navkeypressed = true;
> }
>
> @@ -1947,11 +1947,13 @@ static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist,
> struct perf_evsel *pos;
> struct perf_evsel_menu menu = {
> .b = {
> + .ops = {
> + .refresh = ui_browser__list_head_refresh,
> + .seek = ui_browser__list_head_seek,
> + .write = perf_evsel_menu__write,
> + .filter = filter_group_entries,
> + },
> .entries = &evlist->entries,
> - .refresh = ui_browser__list_head_refresh,
> - .seek = ui_browser__list_head_seek,
> - .write = perf_evsel_menu__write,
> - .filter = filter_group_entries,
> .nr_entries = nr_entries,
> .priv = evlist,
> },
> diff --git a/tools/perf/ui/browsers/map.c b/tools/perf/ui/browsers/map.c
> index b11639f..6b09cd6 100644
> --- a/tools/perf/ui/browsers/map.c
> +++ b/tools/perf/ui/browsers/map.c
> @@ -103,9 +103,11 @@ int map__browse(struct map *map)
> struct map_browser mb = {
> .b = {
> .entries = &map->dso->symbols[map->type],
> - .refresh = ui_browser__rb_tree_refresh,
> - .seek = ui_browser__rb_tree_seek,
> - .write = map_browser__write,
> + .ops = {
> + .refresh = ui_browser__rb_tree_refresh,
> + .seek = ui_browser__rb_tree_seek,
> + .write = map_browser__write,
> + },
> },
> .map = map,
> };
> diff --git a/tools/perf/ui/browsers/scripts.c b/tools/perf/ui/browsers/scripts.c
> index 402d2bd..bbbc442 100644
> --- a/tools/perf/ui/browsers/scripts.c
> +++ b/tools/perf/ui/browsers/scripts.c
> @@ -116,7 +116,7 @@ int script_browse(const char *script_opt)
> struct script_line *sline;
>
> struct perf_script_browser script = {
> - .b = {
> + .b.ops = {
> .refresh = ui_browser__list_head_refresh,
> .seek = ui_browser__list_head_seek,
> .write = script_browser__write,
> diff --git a/tools/perf/ui/tui/util.c b/tools/perf/ui/tui/util.c
> index bf890f7..8ac0465 100644
> --- a/tools/perf/ui/tui/util.c
> +++ b/tools/perf/ui/tui/util.c
> @@ -60,10 +60,12 @@ int ui__popup_menu(int argc, char * const argv[])
> {
> struct ui_browser menu = {
> .entries = (void *)argv,
> - .refresh = ui_browser__argv_refresh,
> - .seek = ui_browser__argv_seek,
> - .write = ui_browser__argv_write,
> .nr_entries = argc,
> + .ops = {
> + .refresh = ui_browser__argv_refresh,
> + .seek = ui_browser__argv_seek,
> + .write = ui_browser__argv_write,
> + },
> };
>
> return popup_menu__run(&menu);
> --
> 1.8.3.1
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