[PATCH 6/6] perf ui/tui: Implement header window

Namhyung Kim
2013-12-19T07:00:31Z

From: Namhyung Kim <namhyung.kim@lge.com>

Implement a simple, full-screen header window which shows session
header (metadata) information. Press 'i' key to display the header
window.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/Makefile.perf | 1 +
tools/perf/ui/browser.h | 2 +
tools/perf/ui/browsers/header.c | 116 ++++++++++++++++++++++++++++++++++++++++
tools/perf/ui/browsers/hists.c | 4 ++
4 files changed, 123 insertions(+)
create mode 100644 tools/perf/ui/browsers/header.c

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 30aabace33a0..4d046e97d0e7 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -491,6 +491,7 @@ ifndef NO_SLANG
LIB_OBJS += $(OUTPUT)ui/browsers/map.o
LIB_OBJS += $(OUTPUT)ui/browsers/scripts.o
LIB_OBJS += $(OUTPUT)ui/browsers/log.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
diff --git a/tools/perf/ui/browser.h b/tools/perf/ui/browser.h
index fff46942a8c7..b77d8728b3f0 100644
--- a/tools/perf/ui/browser.h
+++ b/tools/perf/ui/browser.h
@@ -60,6 +60,8 @@ 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);
int tui__log_window(void);
+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);
diff --git a/tools/perf/ui/browsers/header.c b/tools/perf/ui/browsers/header.c
new file mode 100644
index 000000000000..b5f0961bf793
--- /dev/null
+++ b/tools/perf/ui/browsers/header.c
@@ -0,0 +1,116 @@
+#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;
+
+ 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_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;
+}
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 8cc6f5eaa2cf..d710c6403a14 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1487,6 +1487,9 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
case 'l':
tui__log_window();
continue;
+ case 'i':
+ tui__header_window(env);
+ continue;
case K_F1:
case 'h':
case '?':
@@ -1510,6 +1513,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
"P Print histograms to perf.hist.N\n"
"V Verbose (DSO names in callchains, etc)\n"
"l Show log messages\n"
+ "i Show header information\n"
"/ Filter symbol by name");
continue;
case K_ENTER:
--
1.7.11.7