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Date:	Mon, 20 Apr 2015 11:00:20 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>
Subject: Re: [PATCH 6/7] perf hists browser: Split popup menu actions

Em Sun, Apr 19, 2015 at 01:04:14PM +0900, Namhyung Kim escreveu:
> Currently perf_evsel__hists_browse() function spins on a huge loop and
> handles many key actions.  Since it's hard to read and modify, let's
> split it out into small helper functions.
> 
> The add_XXX_opt() functions are to register popup menu item on the
> selected entry.  When it adds an item, it also saves related data into
> struct popup_option and returns 1 so that it can increase the number of
> items (nr_opts).  A callback function named do_XXX is called with saved
> data when the item is selected by user.
> 
> No functional change intended.
> 
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
>  tools/perf/ui/browsers/hists.c | 565 ++++++++++++++++++++++++++---------------
>  1 file changed, 363 insertions(+), 202 deletions(-)
> 
> diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
> index cace2df7e561..315ebc493508 100644
> --- a/tools/perf/ui/browsers/hists.c
> +++ b/tools/perf/ui/browsers/hists.c
> @@ -1216,11 +1216,6 @@ static void hist_browser__delete(struct hist_browser *browser)
>  	free(browser);
>  }
>  
> -static struct hist_entry *hist_browser__selected_entry(struct hist_browser *browser)
> -{
> -	return browser->he_selection;
> -}
> -

Why remove the above function? To reduce the patch size you could have
left it and if the reason for removing it is that compelling, remove it
in a later patch.

>  static struct thread *hist_browser__selected_thread(struct hist_browser *browser)
>  {
>  	return browser->he_selection->thread;
> @@ -1395,6 +1390,281 @@ close_file_and_continue:
>  	return ret;
>  }
>  
> +struct popup_option {
> +	struct thread 	*thread;
> +	struct map 	*map;
> +	struct dso	*dso;
> +	struct symbol 	*sym;

You could use struct map_symbol, that has the three above, right? In
some cases you would have less lines by doing:

	
	ms = po->ms;

> +	int (*fn)(struct popup_option *opt, struct hist_browser *browser,
> +		  struct hist_browser_timer *hbt, struct pstack *pstack,

I wonder if, as a prep patch, you couldn't have browser->hbt, so that we
would reduce the function signature above. Ditto for pstack.


Also, you're adding the mechanism (popup_option) at the same time that
you make those new functions use it.

I think that it would be better if you first created the functions, call
them directly, then introduce popup_option (probably better named as
"popup_action").

Each patch would be smaller and more easily reviewable, as well bisect
would work better when locating bugs.

> +		  struct perf_session_env *env);
> +};
> +
> +static int
> +do_annotate(struct popup_option *opt, struct hist_browser *browser,
> +	    struct hist_browser_timer *hbt, struct pstack *pstack __maybe_unused,
> +	    struct perf_session_env *env)
> +{
> +	struct perf_evsel *evsel;
> +	struct annotation *notes;
> +	struct map_symbol ms;
> +	int err;
> +
> +	if (!objdump_path && perf_session_env__lookup_objdump(env))
> +		return 0;
> +
> +	ms.map = opt->map;
> +	ms.sym = opt->sym;
> +
> +	notes = symbol__annotation(ms.sym);
> +	if (!notes->src)
> +		return 0;
> +
> +	evsel = hists_to_evsel(browser->hists);
> +	err = map_symbol__tui_annotate(&ms, evsel, hbt);
> +	/*
> +	 * offer option to annotate the other branch source or target
> +	 * (if they exists) when returning from annotate
> +	 */
> +	if ((err == 'q' || err == CTRL('c'))
> +	    && browser->he_selection->branch_info)

Please put the && operator at the end of the first line, even if
originally it was like that (was it?).

> +		return 1;
> +
> +	ui_browser__update_nr_entries(&browser->b, browser->hists->nr_entries);
> +	if (err)
> +		ui_browser__handle_resize(&browser->b);
> +	return 0;
> +}
> +
> +static int
> +add_annotate_opt(struct popup_option *opt, char **optstr,
> +		 struct hist_browser *browser __maybe_unused,
> +		 struct map *map, struct symbol *sym)
> +{
> +	if (sym == NULL || map->dso->annotate_warned)
> +		return 0;
> +
> +	if (asprintf(optstr, "Annotate %s", sym->name) < 0)
> +		return 0;
> +
> +	opt->map = map;
> +	opt->sym = sym;
> +	opt->fn = do_annotate;
> +	return 1;
> +}
> +
> +static int do_zoom_thread(struct popup_option *opt,
> +			  struct hist_browser *browser,
> +			  struct hist_browser_timer *hbt __maybe_unused,
> +			  struct pstack *pstack,
> +			  struct perf_session_env *env __maybe_unused)
> +{
> +	struct thread *thread = opt->thread;
> +
> +	if (browser->hists->thread_filter) {
> +		pstack__remove(pstack, &browser->hists->thread_filter);
> +		perf_hpp__set_elide(HISTC_THREAD, false);
> +		thread__zput(browser->hists->thread_filter);
> +		ui_helpline__pop();
> +	} else {
> +		ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s(%d) thread\"",
> +				   thread->comm_set ? thread__comm_str(thread) : "",
> +				   thread->tid);
> +		browser->hists->thread_filter = thread__get(thread);
> +		perf_hpp__set_elide(HISTC_THREAD, false);
> +		pstack__push(pstack, &browser->hists->thread_filter);
> +	}
> +
> +	hists__filter_by_thread(browser->hists);
> +	hist_browser__reset(browser);
> +	return 0;
> +}
> +
> +static int
> +add_thread_opt(struct popup_option *opt, char **optstr,
> +	       struct hist_browser *browser, struct thread *thread)
> +{
> +	if (thread == NULL)
> +		return 0;
> +
> +	if (asprintf(optstr, "Zoom %s %s(%d) thread",
> +		     browser->hists->thread_filter ? "out of" : "into",
> +		     thread->comm_set ? thread__comm_str(thread) : "",
> +		     thread->tid) < 0)
> +		return 0;
> +
> +	opt->thread = thread;
> +	opt->fn = do_zoom_thread;
> +	return 1;
> +}
> +
> +static int do_zoom_dso(struct popup_option *opt,
> +		       struct hist_browser *browser,
> +		       struct hist_browser_timer *hbt __maybe_unused,
> +		       struct pstack *pstack,
> +		       struct perf_session_env *env __maybe_unused)
> +{
> +	struct dso *dso = opt->dso;
> +
> +	if (browser->hists->dso_filter) {
> +		pstack__remove(pstack, &browser->hists->dso_filter);
> +		perf_hpp__set_elide(HISTC_DSO, false);
> +		browser->hists->dso_filter = NULL;
> +		ui_helpline__pop();
> +	} else {
> +		if (dso == NULL)
> +			return 0;
> +		ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s DSO\"",
> +				   dso->kernel ? "the Kernel" : dso->short_name);
> +		browser->hists->dso_filter = dso;
> +		perf_hpp__set_elide(HISTC_DSO, true);
> +		pstack__push(pstack, &browser->hists->dso_filter);
> +	}
> +
> +	hists__filter_by_dso(browser->hists);
> +	hist_browser__reset(browser);
> +	return 0;
> +}
> +
> +static int
> +add_dso_opt(struct popup_option *opt, char **optstr,
> +	    struct hist_browser *browser, struct dso *dso)
> +{
> +	if (dso == NULL)
> +		return 0;
> +
> +	if (asprintf(optstr, "Zoom %s %s DSO",
> +		     browser->hists->dso_filter ? "out of" : "into",
> +		     dso->kernel ? "the Kernel" : dso->short_name) < 0)
> +		return 0;
> +
> +	opt->dso = dso;
> +	opt->fn = do_zoom_dso;
> +	return 1;
> +}
> +
> +static int do_browse_map(struct popup_option *opt,
> +			 struct hist_browser *browser __maybe_unused,
> +			 struct hist_browser_timer *hbt __maybe_unused,
> +			 struct pstack *pstack __maybe_unused,
> +			 struct perf_session_env *env __maybe_unused)
> +{
> +	map__browse(opt->map);
> +	return 0;
> +}
> +
> +static int
> +add_map_opt(struct popup_option *opt, char **optstr,
> +	    struct hist_browser *browser __maybe_unused, struct map *map)
> +{
> +	if (map == NULL)
> +		return 0;
> +
> +	if (asprintf(optstr, "Browse map details") < 0)
> +		return 0;
> +
> +	opt->map = map;
> +	opt->fn = do_browse_map;
> +	return 1;
> +}
> +
> +static int do_run_script(struct popup_option *opt,
> +			 struct hist_browser *browser __maybe_unused,
> +			 struct hist_browser_timer *hbt __maybe_unused,
> +			 struct pstack *pstack __maybe_unused,
> +			 struct perf_session_env *env __maybe_unused)
> +{
> +	char script_opt[64];
> +	memset(script_opt, 0, sizeof(script_opt));
> +
> +	if (opt->thread) {
> +		scnprintf(script_opt, sizeof(script_opt), " -c %s ",
> +			  thread__comm_str(opt->thread));
> +	} else if (opt->sym) {
> +		scnprintf(script_opt, sizeof(script_opt), " -S %s ",
> +			  opt->sym->name);
> +	}
> +
> +	script_browse(script_opt);
> +	return 0;
> +}
> +
> +static int
> +add_script_opt(struct popup_option *opt, char **optstr,
> +	       struct hist_browser *browser __maybe_unused,
> +	       struct thread *thread, struct symbol *sym)
> +{
> +	if (thread) {
> +		if (asprintf(optstr, "Run scripts for samples of thread [%s]",
> +			     thread__comm_str(thread)) < 0)
> +			return 0;
> +	} else if (sym) {
> +		if (asprintf(optstr, "Run scripts for samples of symbol [%s]",
> +			     sym->name) < 0)
> +			return 0;
> +	} else {
> +		if (asprintf(optstr, "Run scripts for all samples") < 0)
> +			return 0;
> +	}
> +
> +	opt->thread = thread;
> +	opt->sym = sym;
> +	opt->fn = do_run_script;
> +
> +	return 1;
> +}
> +
> +static int do_switch_data(struct popup_option *opt __maybe_unused,
> +			  struct hist_browser *browser __maybe_unused,
> +			  struct hist_browser_timer *hbt __maybe_unused,
> +			  struct pstack *pstack __maybe_unused,
> +			  struct perf_session_env *env __maybe_unused)
> +{
> +	if (switch_data_file()) {
> +		ui__warning("Won't switch the data files due to\n"
> +			    "no valid data file get selected!\n");
> +		return 0;
> +	}
> +
> +	return K_SWITCH_INPUT_DATA;
> +}
> +
> +static int
> +add_switch_opt(struct popup_option *opt, char **optstr,
> +	       struct hist_browser *browser __maybe_unused,
> +	       struct hist_browser_timer *hbt)
> +{
> +	if (!is_report_browser(hbt))
> +		return 0;
> +
> +	if (asprintf(optstr, "Switch to another data file in PWD") < 0)
> +		return 0;
> +
> +	opt->fn = do_switch_data;
> +	return 1;
> +}
> +
> +static int do_exit_browser(struct popup_option *opt __maybe_unused,
> +			   struct hist_browser *browser __maybe_unused,
> +			   struct hist_browser_timer *hbt __maybe_unused,
> +			   struct pstack *pstack __maybe_unused,
> +			   struct perf_session_env *env __maybe_unused)
> +{
> +	return 0;
> +}
> +
> +static int
> +add_exit_opt(struct popup_option *opt, char **optstr,
> +	     struct hist_browser *browser __maybe_unused)
> +{
> +	if (asprintf(optstr, "Exit") < 0)
> +		return 0;
> +
> +	opt->fn = do_exit_browser;
> +	return 1;
> +}
> +
>  static void hist_browser__update_nr_entries(struct hist_browser *hb)
>  {
>  	u64 nr_entries = 0;
> @@ -1424,11 +1694,11 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
>  	struct hist_browser *browser = hist_browser__new(hists);
>  	struct branch_info *bi;
>  	struct pstack *fstack;
> -	char *options[16];
> -	int nr_options = 0;
> +	char *optstr[16];
> +	struct popup_option opts[16];
> +	int nr_opts = 0;
>  	int key = -1;
>  	char buf[64];
> -	char script_opt[64];
>  	int delay_secs = hbt ? hbt->refresh : 0;
>  	struct perf_hpp_fmt *fmt;
>  
> @@ -1479,7 +1749,8 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
>  
>  	ui_helpline__push(helpline);
>  
> -	memset(options, 0, sizeof(options));
> +	memset(optstr, 0, sizeof(optstr));
> +	memset(opts, 0, sizeof(opts));
>  
>  	perf_hpp__for_each_format(fmt)
>  		perf_hpp__reset_width(fmt, hists);
> @@ -1489,14 +1760,10 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
>  
>  	while (1) {
>  		struct thread *thread = NULL;
> -		const struct dso *dso = NULL;
> -		int choice = 0,
> -		    annotate = -2, zoom_dso = -2, zoom_thread = -2,
> -		    annotate_f = -2, annotate_t = -2, browse_map = -2;
> -		int scripts_comm = -2, scripts_symbol = -2,
> -		    scripts_all = -2, switch_data = -2;
> +		struct dso *dso = NULL;
> +		int choice = 0;
>  
> -		nr_options = 0;
> +		nr_opts = 0;
>  
>  		key = hist_browser__run(browser, hbt);
>  
> @@ -1526,17 +1793,28 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
>  			    browser->selection->sym == NULL ||
>  			    browser->selection->map->dso->annotate_warned)
>  				continue;
> -			goto do_annotate;
> +
> +			opts->map = browser->selection->map;
> +			opts->sym = browser->selection->sym;
> +
> +			do_annotate(opts, browser, hbt, fstack, env);
> +			continue;
>  		case 'P':
>  			hist_browser__dump(browser);
>  			continue;
>  		case 'd':
> -			goto zoom_dso;
> +			opts->dso = dso;
> +
> +			do_zoom_dso(opts, browser, hbt, fstack, env);
> +			continue;
>  		case 'V':
>  			browser->show_dso = !browser->show_dso;
>  			continue;
>  		case 't':
> -			goto zoom_thread;
> +			opts->thread = thread;
> +
> +			do_zoom_thread(opts, browser, hbt, fstack, env);
> +			continue;
>  		case '/':
>  			if (ui_browser__input_window("Symbol to show",
>  					"Please enter the name of symbol you want to see",
> @@ -1548,12 +1826,20 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
>  			}
>  			continue;
>  		case 'r':
> -			if (is_report_browser(hbt))
> -				goto do_scripts;
> +			if (is_report_browser(hbt)) {
> +				opts->thread = NULL;
> +				opts->sym = NULL;
> +
> +				do_run_script(opts, browser, hbt, fstack, env);
> +			}
>  			continue;
>  		case 's':
> -			if (is_report_browser(hbt))
> -				goto do_data_switch;
> +			if (is_report_browser(hbt)) {
> +				key = do_switch_data(opts, browser, hbt,
> +						     fstack, env);
> +				if (key == K_SWITCH_INPUT_DATA)
> +					goto out_free_stack;
> +			}
>  			continue;
>  		case 'i':
>  			/* env->arch is NULL for live-mode (i.e. perf top) */
> @@ -1592,10 +1878,16 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
>  				continue;
>  			}
>  			top = pstack__pop(fstack);
> -			if (top == &browser->hists->dso_filter)
> -				goto zoom_out_dso;
> -			if (top == &browser->hists->thread_filter)
> -				goto zoom_out_thread;
> +			if (top == &browser->hists->dso_filter) {
> +				perf_hpp__set_elide(HISTC_DSO, false);
> +				browser->hists->dso_filter = NULL;
> +				ui_helpline__pop();
> +			}
> +			if (top == &browser->hists->thread_filter) {
> +				perf_hpp__set_elide(HISTC_THREAD, false);
> +				thread__zput(browser->hists->thread_filter);
> +				ui_helpline__pop();
> +			}
>  			continue;
>  		}
>  		case K_ESC:
> @@ -1620,200 +1912,69 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
>  		if (sort__mode == SORT_MODE__BRANCH) {
>  			bi = browser->he_selection->branch_info;
>  
> -			if (bi == NULL)
> -				goto skip_annotation;
> -
> -			if (bi->from.sym != NULL &&
> -			    !bi->from.map->dso->annotate_warned &&
> -			    asprintf(&options[nr_options], "Annotate %s", bi->from.sym->name) > 0) {
> -				annotate_f = nr_options++;
> -			}
> -
> -			if (bi->to.sym != NULL &&
> -			    !bi->to.map->dso->annotate_warned &&
> -			    (bi->to.sym != bi->from.sym ||
> -			     bi->to.map->dso != bi->from.map->dso) &&
> -			    asprintf(&options[nr_options], "Annotate %s", bi->to.sym->name) > 0) {
> -				annotate_t = nr_options++;
> +			if (bi != NULL) {
> +				nr_opts += add_annotate_opt(&opts[nr_opts],
> +							    &optstr[nr_opts],
> +							    browser,
> +							    bi->from.map,
> +							    bi->from.sym);
> +				if (bi->to.sym != bi->from.sym)
> +					nr_opts += add_annotate_opt(&opts[nr_opts],
> +								    &optstr[nr_opts],
> +								    browser,
> +								    bi->to.map,
> +								    bi->to.sym);
>  			}
>  		} else {
> -			if (browser->selection->sym != NULL &&
> -			    !browser->selection->map->dso->annotate_warned) {
> -				struct annotation *notes;
> -
> -				notes = symbol__annotation(browser->selection->sym);
> -
> -				if (notes->src &&
> -				    asprintf(&options[nr_options], "Annotate %s",
> -						 browser->selection->sym->name) > 0) {
> -					annotate = nr_options++;
> -				}
> -			}
> +			nr_opts += add_annotate_opt(&opts[nr_opts],
> +						    &optstr[nr_opts], browser,
> +						    browser->selection->map,
> +						    browser->selection->sym);
>  		}
>  skip_annotation:
> -		if (thread != NULL &&
> -		    asprintf(&options[nr_options], "Zoom %s %s(%d) thread",
> -			     (browser->hists->thread_filter ? "out of" : "into"),
> -			     (thread->comm_set ? thread__comm_str(thread) : ""),
> -			     thread->tid) > 0)
> -			zoom_thread = nr_options++;
> -
> -		if (dso != NULL &&
> -		    asprintf(&options[nr_options], "Zoom %s %s DSO",
> -			     (browser->hists->dso_filter ? "out of" : "into"),
> -			     (dso->kernel ? "the Kernel" : dso->short_name)) > 0)
> -			zoom_dso = nr_options++;
> -
> -		if (browser->selection != NULL &&
> -		    browser->selection->map != NULL &&
> -		    asprintf(&options[nr_options], "Browse map details") > 0)
> -			browse_map = nr_options++;
> +		nr_opts += add_thread_opt(&opts[nr_opts], &optstr[nr_opts],
> +					  browser, thread);
> +		nr_opts += add_dso_opt(&opts[nr_opts], &optstr[nr_opts],
> +				       browser, dso);
> +		nr_opts += add_map_opt(&opts[nr_opts], &optstr[nr_opts],
> +				       browser, browser->selection->map);
>  
>  		/* perf script support */
>  		if (browser->he_selection) {
> -			struct symbol *sym;
> -
> -			if (asprintf(&options[nr_options], "Run scripts for samples of thread [%s]",
> -				     thread__comm_str(browser->he_selection->thread)) > 0)
> -				scripts_comm = nr_options++;
> -
> -			sym = browser->he_selection->ms.sym;
> -			if (sym && sym->namelen &&
> -				asprintf(&options[nr_options], "Run scripts for samples of symbol [%s]",
> -						sym->name) > 0)
> -				scripts_symbol = nr_options++;
> +			nr_opts += add_script_opt(&opts[nr_opts], &optstr[nr_opts],
> +						  browser, thread, NULL);
> +			nr_opts += add_script_opt(&opts[nr_opts], &optstr[nr_opts],
> +						  browser, NULL,
> +						  browser->selection->sym);
>  		}
> +		nr_opts += add_script_opt(&opts[nr_opts], &optstr[nr_opts],
> +					  browser, NULL, NULL);
>  
> -		if (asprintf(&options[nr_options], "Run scripts for all samples") > 0)
> -			scripts_all = nr_options++;
> -
> -		if (is_report_browser(hbt) && asprintf(&options[nr_options],
> -				"Switch to another data file in PWD") > 0)
> -			switch_data = nr_options++;
> +		nr_opts += add_switch_opt(&opts[nr_opts], &optstr[nr_opts],
> +					  browser, hbt);
>  add_exit_option:
> -		if (asprintf(&options[nr_options], "Exit") > 0)
> -			nr_options++;
> -retry_popup_menu:
> -		choice = ui__popup_menu(nr_options, options);
> -
> -		if (choice == nr_options - 1)
> -			break;
> -
> -		if (choice == -1) {
> -			free_popup_options(options, nr_options - 1);
> -			continue;
> -		}
> -
> -		if (choice == annotate || choice == annotate_t || choice == annotate_f) {
> -			struct hist_entry *he;
> -			struct annotation *notes;
> -			struct map_symbol ms;
> -			int err;
> -do_annotate:
> -			if (!objdump_path && perf_session_env__lookup_objdump(env))
> -				continue;
> +		nr_opts += add_exit_opt(&opts[nr_opts], &optstr[nr_opts],
> +					browser);
>  
> -			he = hist_browser__selected_entry(browser);
> -			if (he == NULL)
> -				continue;
> -
> -			if (choice == annotate_f) {
> -				ms.map = he->branch_info->from.map;
> -				ms.sym = he->branch_info->from.sym;
> -			} else if (choice == annotate_t) {
> -				ms.map = he->branch_info->to.map;
> -				ms.sym = he->branch_info->to.sym;
> -			} else {
> -				ms = *browser->selection;
> -			}
> -
> -			notes = symbol__annotation(ms.sym);
> -			if (!notes->src)
> -				continue;
> -
> -			err = map_symbol__tui_annotate(&ms, evsel, hbt);
> -			/*
> -			 * offer option to annotate the other branch source or target
> -			 * (if they exists) when returning from annotate
> -			 */
> -			if ((err == 'q' || err == CTRL('c'))
> -			    && annotate_t != -2 && annotate_f != -2)
> -				goto retry_popup_menu;
> -
> -			ui_browser__update_nr_entries(&browser->b, browser->hists->nr_entries);
> -			if (err)
> -				ui_browser__handle_resize(&browser->b);
> -
> -		} else if (choice == browse_map)
> -			map__browse(browser->selection->map);
> -		else if (choice == zoom_dso) {
> -zoom_dso:
> -			if (browser->hists->dso_filter) {
> -				pstack__remove(fstack, &browser->hists->dso_filter);
> -zoom_out_dso:
> -				ui_helpline__pop();
> -				browser->hists->dso_filter = NULL;
> -				perf_hpp__set_elide(HISTC_DSO, false);
> -			} else {
> -				if (dso == NULL)
> -					continue;
> -				ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s DSO\"",
> -						   dso->kernel ? "the Kernel" : dso->short_name);
> -				browser->hists->dso_filter = dso;
> -				perf_hpp__set_elide(HISTC_DSO, true);
> -				pstack__push(fstack, &browser->hists->dso_filter);
> -			}
> -			hists__filter_by_dso(hists);
> -			hist_browser__reset(browser);
> -		} else if (choice == zoom_thread) {
> -zoom_thread:
> -			if (browser->hists->thread_filter) {
> -				pstack__remove(fstack, &browser->hists->thread_filter);
> -zoom_out_thread:
> -				ui_helpline__pop();
> -				thread__zput(browser->hists->thread_filter);
> -				perf_hpp__set_elide(HISTC_THREAD, false);
> -			} else {
> -				ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s(%d) thread\"",
> -						   thread->comm_set ? thread__comm_str(thread) : "",
> -						   thread->tid);
> -				browser->hists->thread_filter = thread__get(thread);
> -				perf_hpp__set_elide(HISTC_THREAD, false);
> -				pstack__push(fstack, &browser->hists->thread_filter);
> -			}
> -			hists__filter_by_thread(hists);
> -			hist_browser__reset(browser);
> -		}
> -		/* perf scripts support */
> -		else if (choice == scripts_all || choice == scripts_comm ||
> -				choice == scripts_symbol) {
> -do_scripts:
> -			memset(script_opt, 0, 64);
> +		do {
> +			struct popup_option *opt;
>  
> -			if (choice == scripts_comm)
> -				sprintf(script_opt, " -c %s ", thread__comm_str(browser->he_selection->thread));
> +			choice = ui__popup_menu(nr_opts, optstr);
> +			if (choice == -1 || choice >= nr_opts)
> +				break;
>  
> -			if (choice == scripts_symbol)
> -				sprintf(script_opt, " -S %s ", browser->he_selection->ms.sym->name);
> +			opt = &opts[choice];
> +			key = opt->fn(opt, browser, hbt, fstack, env);
> +		} while (key == 1);
>  
> -			script_browse(script_opt);
> -		}
> -		/* Switch to another data file */
> -		else if (choice == switch_data) {
> -do_data_switch:
> -			if (!switch_data_file()) {
> -				key = K_SWITCH_INPUT_DATA;
> -				break;
> -			} else
> -				ui__warning("Won't switch the data files due to\n"
> -					"no valid data file get selected!\n");
> -		}
> +		if (key == K_SWITCH_INPUT_DATA)
> +			break;
>  	}
>  out_free_stack:
>  	pstack__delete(fstack);
>  out:
>  	hist_browser__delete(browser);
> -	free_popup_options(options, ARRAY_SIZE(options));
> +	free_popup_options(optstr, ARRAY_SIZE(optstr));
>  	return key;
>  }
>  
> -- 
> 2.3.5
--
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