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Subject[PATCH 10/11] perf ui browser: Handle K_RESIZE in dialog windows
Date
From: Arnaldo Carvalho de Melo <acme@redhat.com>

Just provide wrappers for things like ui__warning, ui__dialog_yesno and
if they return K_RESIZE, refresh dimensions, redraw the entries, etc.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-3ih7hyk9weryxaxb501sfq4u@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/debug.c | 7 +++--
tools/perf/util/debug.h | 6 ++--
tools/perf/util/ui/browser.c | 40 +++++++++++++++++++++++++++++++++++
tools/perf/util/ui/browser.h | 5 ++++
tools/perf/util/ui/browsers/hists.c | 22 +++++++++++++------
tools/perf/util/ui/helpline.c | 6 +++++
tools/perf/util/ui/helpline.h | 2 +
tools/perf/util/ui/util.c | 27 ++++++++++++++---------
tools/perf/util/ui/util.h | 5 ++-
9 files changed, 94 insertions(+), 26 deletions(-)
diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
index 5563403..26817da 100644
--- a/tools/perf/util/debug.c
+++ b/tools/perf/util/debug.c
@@ -47,19 +47,20 @@ int dump_printf(const char *fmt, ...)
}

#ifdef NO_NEWT_SUPPORT
-void ui__warning(const char *format, ...)
+int ui__warning(const char *format, ...)
{
va_list args;

va_start(args, format);
vfprintf(stderr, format, args);
va_end(args);
+ return 0;
}
#endif

-void ui__error_paranoid(void)
+int ui__error_paranoid(void)
{
- ui__error("Permission error - are you root?\n"
+ return ui__error("Permission error - are you root?\n"
"Consider tweaking /proc/sys/kernel/perf_event_paranoid:\n"
" -1 - Not paranoid at all\n"
" 0 - Disallow raw tracepoint access for unpriv\n"
diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h
index 16cc752..f2ce88d 100644
--- a/tools/perf/util/debug.h
+++ b/tools/perf/util/debug.h
@@ -27,10 +27,10 @@ static inline void ui_progress__update(u64 curr __used, u64 total __used,
extern char ui_helpline__last_msg[];
int ui_helpline__show_help(const char *format, va_list ap);
#include "ui/progress.h"
-void ui__error(const char *format, ...) __attribute__((format(printf, 1, 2)));
+int ui__error(const char *format, ...) __attribute__((format(printf, 1, 2)));
#endif

-void ui__warning(const char *format, ...) __attribute__((format(printf, 1, 2)));
-void ui__error_paranoid(void);
+int ui__warning(const char *format, ...) __attribute__((format(printf, 1, 2)));
+int ui__error_paranoid(void);

#endif /* __PERF_DEBUG_H */
diff --git a/tools/perf/util/ui/browser.c b/tools/perf/util/ui/browser.c
index 8607efa..d2051be 100644
--- a/tools/perf/util/ui/browser.c
+++ b/tools/perf/util/ui/browser.c
@@ -169,6 +169,46 @@ void ui_browser__refresh_dimensions(struct ui_browser *self)
self->x = 0;
}

+void ui_browser__handle_resize(struct ui_browser *browser)
+{
+ ui__refresh_dimensions(false);
+ ui_browser__show(browser, browser->title, ui_helpline__current);
+ ui_browser__refresh(browser);
+}
+
+int ui_browser__warning(struct ui_browser *browser, const char *format, ...)
+{
+ va_list args;
+ int key;
+
+ va_start(args, format);
+ while ((key = __ui__warning("Warning!", format, args)) == K_RESIZE)
+ ui_browser__handle_resize(browser);
+ va_end(args);
+
+ return key;
+}
+
+int ui_browser__help_window(struct ui_browser *browser, const char *text)
+{
+ int key;
+
+ while ((key = ui__help_window(text)) == K_RESIZE)
+ ui_browser__handle_resize(browser);
+
+ return key;
+}
+
+bool ui_browser__dialog_yesno(struct ui_browser *browser, const char *text)
+{
+ int key;
+
+ while ((key = ui__dialog_yesno(text)) == K_RESIZE)
+ ui_browser__handle_resize(browser);
+
+ return key == K_ENTER || toupper(key) == 'Y';
+}
+
void ui_browser__reset_index(struct ui_browser *self)
{
self->index = self->top_idx = 0;
diff --git a/tools/perf/util/ui/browser.h b/tools/perf/util/ui/browser.h
index 81a8d2a..fb1c598 100644
--- a/tools/perf/util/ui/browser.h
+++ b/tools/perf/util/ui/browser.h
@@ -43,6 +43,11 @@ void ui_browser__hide(struct ui_browser *self);
int ui_browser__refresh(struct ui_browser *self);
int ui_browser__run(struct ui_browser *browser, int delay_secs);
void ui_browser__update_nr_entries(struct ui_browser *browser, u32 nr_entries);
+void ui_browser__handle_resize(struct ui_browser *browser);
+
+int ui_browser__warning(struct ui_browser *browser, const char *format, ...);
+int ui_browser__help_window(struct ui_browser *browser, const char *text);
+bool ui_browser__dialog_yesno(struct ui_browser *browser, const char *text);

void ui_browser__argv_seek(struct ui_browser *browser, off_t offset, int whence);
unsigned int ui_browser__argv_refresh(struct ui_browser *browser);
diff --git a/tools/perf/util/ui/browsers/hists.c b/tools/perf/util/ui/browsers/hists.c
index 44210d4..b8733c0 100644
--- a/tools/perf/util/ui/browsers/hists.c
+++ b/tools/perf/util/ui/browsers/hists.c
@@ -17,6 +17,7 @@
#include "../browser.h"
#include "../helpline.h"
#include "../util.h"
+#include "../ui.h"
#include "map.h"

struct hist_browser {
@@ -882,7 +883,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
goto out_free_stack;
case 'a':
if (!browser->has_symbols) {
- ui__warning(
+ ui_browser__warning(&browser->b,
"Annotation is only available for symbolic views, "
"include \"sym\" in --sort to use it.");
continue;
@@ -900,7 +901,8 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
case K_F1:
case 'h':
case '?':
- ui__help_window("h/?/F1 Show this window\n"
+ ui_browser__help_window(&browser->b,
+ "h/?/F1 Show this window\n"
"UP/DOWN/PGUP\n"
"PGDN/SPACE Navigate\n"
"q/ESC/CTRL+C Exit browser\n\n"
@@ -939,7 +941,8 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
}
case K_ESC:
if (!left_exits &&
- !ui__dialog_yesno("Do you really want to exit?"))
+ !ui_browser__dialog_yesno(&browser->b,
+ "Do you really want to exit?"))
continue;
/* Fall thru */
case 'q':
@@ -992,6 +995,7 @@ add_exit_option:

if (choice == annotate) {
struct hist_entry *he;
+ int err;
do_annotate:
he = hist_browser__selected_entry(browser);
if (he == NULL)
@@ -1000,10 +1004,12 @@ do_annotate:
* Don't let this be freed, say, by hists__decay_entry.
*/
he->used = true;
- hist_entry__tui_annotate(he, evsel->idx, nr_events,
- timer, arg, delay_secs);
+ err = hist_entry__tui_annotate(he, evsel->idx, nr_events,
+ timer, arg, delay_secs);
he->used = false;
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) {
@@ -1132,7 +1138,8 @@ browse_hists:
pos = list_entry(pos->node.prev, struct perf_evsel, node);
goto browse_hists;
case K_ESC:
- if (!ui__dialog_yesno("Do you really want to exit?"))
+ if (!ui_browser__dialog_yesno(&menu->b,
+ "Do you really want to exit?"))
continue;
/* Fall thru */
case 'q':
@@ -1144,7 +1151,8 @@ browse_hists:
case K_LEFT:
continue;
case K_ESC:
- if (!ui__dialog_yesno("Do you really want to exit?"))
+ if (!ui_browser__dialog_yesno(&menu->b,
+ "Do you really want to exit?"))
continue;
/* Fall thru */
case 'q':
diff --git a/tools/perf/util/ui/helpline.c b/tools/perf/util/ui/helpline.c
index 600243d..6ef3c56 100644
--- a/tools/perf/util/ui/helpline.c
+++ b/tools/perf/util/ui/helpline.c
@@ -1,6 +1,7 @@
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>

#include "../debug.h"
#include "helpline.h"
@@ -11,12 +12,17 @@ void ui_helpline__pop(void)
{
}

+char ui_helpline__current[512];
+
void ui_helpline__push(const char *msg)
{
+ const size_t sz = sizeof(ui_helpline__current);
+
SLsmg_gotorc(SLtt_Screen_Rows - 1, 0);
SLsmg_set_color(0);
SLsmg_write_nstring((char *)msg, SLtt_Screen_Cols);
SLsmg_refresh();
+ strncpy(ui_helpline__current, msg, sz)[sz - 1] = '\0';
}

void ui_helpline__vpush(const char *fmt, va_list ap)
diff --git a/tools/perf/util/ui/helpline.h b/tools/perf/util/ui/helpline.h
index fdcbc02..7bab6b3 100644
--- a/tools/perf/util/ui/helpline.h
+++ b/tools/perf/util/ui/helpline.h
@@ -11,4 +11,6 @@ void ui_helpline__vpush(const char *fmt, va_list ap);
void ui_helpline__fpush(const char *fmt, ...);
void ui_helpline__puts(const char *msg);

+extern char ui_helpline__current[];
+
#endif /* _PERF_UI_HELPLINE_H_ */
diff --git a/tools/perf/util/ui/util.c b/tools/perf/util/ui/util.c
index ef9b793..45daa7c 100644
--- a/tools/perf/util/ui/util.c
+++ b/tools/perf/util/ui/util.c
@@ -121,43 +121,48 @@ int ui__help_window(const char *text)
return ui__question_window("Help", text, "Press any key...", 0);
}

-bool ui__dialog_yesno(const char *msg)
+int ui__dialog_yesno(const char *msg)
{
- int answer = ui__question_window(NULL, msg, "Enter: Yes, ESC: No", 0);
-
- return answer == K_ENTER;
+ return ui__question_window(NULL, msg, "Enter: Yes, ESC: No", 0);
}

-static void __ui__warning(const char *title, const char *format, va_list args)
+int __ui__warning(const char *title, const char *format, va_list args)
{
char *s;

if (use_browser > 0 && vasprintf(&s, format, args) > 0) {
+ int key;
+
pthread_mutex_lock(&ui__lock);
- ui__question_window(title, s, "Press any key...", 0);
+ key = ui__question_window(title, s, "Press any key...", 0);
pthread_mutex_unlock(&ui__lock);
free(s);
- return;
+ return key;
}

fprintf(stderr, "%s:\n", title);
vfprintf(stderr, format, args);
+ return K_ESC;
}

-void ui__warning(const char *format, ...)
+int ui__warning(const char *format, ...)
{
+ int key;
va_list args;

va_start(args, format);
- __ui__warning("Warning", format, args);
+ key = __ui__warning("Warning", format, args);
va_end(args);
+ return key;
}

-void ui__error(const char *format, ...)
+int ui__error(const char *format, ...)
{
+ int key;
va_list args;

va_start(args, format);
- __ui__warning("Error", format, args);
+ key = __ui__warning("Error", format, args);
va_end(args);
+ return key;
}
diff --git a/tools/perf/util/ui/util.h b/tools/perf/util/ui/util.h
index 9a25538..2d1738b 100644
--- a/tools/perf/util/ui/util.h
+++ b/tools/perf/util/ui/util.h
@@ -1,13 +1,14 @@
#ifndef _PERF_UI_UTIL_H_
#define _PERF_UI_UTIL_H_ 1

-#include <stdbool.h>
+#include <stdarg.h>

int ui__getch(int delay_secs);
int ui__popup_menu(int argc, char * const argv[]);
int ui__help_window(const char *text);
-bool ui__dialog_yesno(const char *msg);
+int ui__dialog_yesno(const char *msg);
int ui__question_window(const char *title, const char *text,
const char *exit_msg, int delay_secs);
+int __ui__warning(const char *title, const char *format, va_list args);

#endif /* _PERF_UI_UTIL_H_ */
--
1.6.2.5


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