Commit 6dd60135 authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo

perf ui/tui: Implement header window

Implement a simple, full-screen header window which shows session header
(metadata) information.  Press 'i' key to display the header window.
Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1388036284-32342-4-git-send-email-namhyung@kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent e8e684a5
......@@ -489,6 +489,7 @@ ifndef NO_SLANG
LIB_OBJS += $(OUTPUT)ui/browsers/hists.o
LIB_OBJS += $(OUTPUT)ui/browsers/map.o
LIB_OBJS += $(OUTPUT)ui/browsers/scripts.o
LIB_OBJS += $(OUTPUT)ui/browsers/header.o
LIB_OBJS += $(OUTPUT)ui/tui/setup.o
LIB_OBJS += $(OUTPUT)ui/tui/util.o
LIB_OBJS += $(OUTPUT)ui/tui/helpline.o
......
......@@ -59,6 +59,8 @@ int ui_browser__help_window(struct ui_browser *browser, const char *text);
bool ui_browser__dialog_yesno(struct ui_browser *browser, const char *text);
int ui_browser__input_window(const char *title, const char *text, char *input,
const char *exit_msg, int delay_sec);
struct perf_session_env;
int tui__header_window(struct perf_session_env *env);
void ui_browser__argv_seek(struct ui_browser *browser, off_t offset, int whence);
unsigned int ui_browser__argv_refresh(struct ui_browser *browser);
......
#include "util/cache.h"
#include "util/debug.h"
#include "ui/browser.h"
#include "ui/ui.h"
#include "ui/util.h"
#include "ui/libslang.h"
#include "util/header.h"
#include "util/session.h"
static void ui_browser__argv_write(struct ui_browser *browser,
void *entry, int row)
{
char **arg = entry;
char *str = *arg;
char empty[] = " ";
bool current_entry = ui_browser__is_current_entry(browser, row);
unsigned long offset = (unsigned long)browser->priv;
if (offset >= strlen(str))
str = empty;
else
str = str + offset;
ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
HE_COLORSET_NORMAL);
slsmg_write_nstring(str, browser->width);
}
static int list_menu__run(struct ui_browser *menu)
{
int key;
unsigned long offset;
const char help[] =
"h/?/F1 Show this window\n"
"UP/DOWN/PGUP\n"
"PGDN/SPACE\n"
"LEFT/RIGHT Navigate\n"
"q/ESC/CTRL+C Exit browser";
if (ui_browser__show(menu, "Header information", "Press 'q' to exit") < 0)
return -1;
while (1) {
key = ui_browser__run(menu, 0);
switch (key) {
case K_RIGHT:
offset = (unsigned long)menu->priv;
offset += 10;
menu->priv = (void *)offset;
continue;
case K_LEFT:
offset = (unsigned long)menu->priv;
if (offset >= 10)
offset -= 10;
menu->priv = (void *)offset;
continue;
case K_F1:
case 'h':
case '?':
ui_browser__help_window(menu, help);
continue;
case K_ESC:
case 'q':
case CTRL('c'):
key = -1;
break;
default:
continue;
}
break;
}
ui_browser__hide(menu);
return key;
}
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,
};
return list_menu__run(&menu);
}
int tui__header_window(struct perf_session_env *env)
{
int i, argc = 0;
char **argv;
struct perf_session *session;
char *ptr, *pos;
size_t size;
FILE *fp = open_memstream(&ptr, &size);
session = container_of(env, struct perf_session, header.env);
perf_header__fprintf_info(session, fp, true);
fclose(fp);
for (pos = ptr, argc = 0; (pos = strchr(pos, '\n')) != NULL; pos++)
argc++;
argv = calloc(argc + 1, sizeof(*argv));
if (argv == NULL)
goto out;
argv[0] = pos = ptr;
for (i = 1; (pos = strchr(pos, '\n')) != NULL; i++) {
*pos++ = '\0';
argv[i] = pos;
}
BUG_ON(i != argc + 1);
ui__list_menu(argc, argv);
out:
free(argv);
free(ptr);
return 0;
}
......@@ -1417,6 +1417,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
/* help messages are sorted by lexical order of the hotkey */
const char report_help[] = HIST_BROWSER_HELP_COMMON
"i Show header information\n"
"P Print histograms to perf.hist.N\n"
"r Run available scripts\n"
"s Switch to another data file in PWD\n"
......@@ -1513,6 +1514,11 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
if (is_report_browser(hbt))
goto do_data_switch;
continue;
case 'i':
/* env->arch is NULL for live-mode (i.e. perf top) */
if (env->arch)
tui__header_window(env);
continue;
case K_F1:
case 'h':
case '?':
......
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