[PATCH v2 09/18] perf ui: Update use of pthread mutex

From: Ian Rogers
Date: Tue Aug 23 2022 - 18:11:33 EST

Switch to the use of mutex wrappers that provide better error checking.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/perf/ui/browser.c | 20 ++++++++++----------
tools/perf/ui/browsers/annotate.c | 2 +-
tools/perf/ui/setup.c | 5 +++--
tools/perf/ui/tui/helpline.c | 5 ++---
tools/perf/ui/tui/progress.c | 8 ++++----
tools/perf/ui/tui/setup.c | 8 ++++----
tools/perf/ui/tui/util.c | 18 +++++++++---------
tools/perf/ui/ui.h | 4 ++--
8 files changed, 35 insertions(+), 35 deletions(-)

diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index fa5bd5c20e96..78fb01d6ad63 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -268,9 +268,9 @@ void __ui_browser__show_title(struct ui_browser *browser, const char *title)

void ui_browser__show_title(struct ui_browser *browser, const char *title)
{
- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);
__ui_browser__show_title(browser, title);
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);
}

int ui_browser__show(struct ui_browser *browser, const char *title,
@@ -284,7 +284,7 @@ int ui_browser__show(struct ui_browser *browser, const char *title,

browser->refresh_dimensions(browser);

- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);
__ui_browser__show_title(browser, title);

browser->title = title;
@@ -295,16 +295,16 @@ int ui_browser__show(struct ui_browser *browser, const char *title,
va_end(ap);
if (err > 0)
ui_helpline__push(browser->helpline);
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);
return err ? 0 : -1;
}

void ui_browser__hide(struct ui_browser *browser)
{
- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);
ui_helpline__pop();
zfree(&browser->helpline);
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);
}

static void ui_browser__scrollbar_set(struct ui_browser *browser)
@@ -352,9 +352,9 @@ static int __ui_browser__refresh(struct ui_browser *browser)

int ui_browser__refresh(struct ui_browser *browser)
{
- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);
__ui_browser__refresh(browser);
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);

return 0;
}
@@ -390,10 +390,10 @@ int ui_browser__run(struct ui_browser *browser, int delay_secs)
while (1) {
off_t offset;

- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);
err = __ui_browser__refresh(browser);
SLsmg_refresh();
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);
if (err < 0)
break;

diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index 44ba900828f6..b8747e8dd9ea 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -8,11 +8,11 @@
#include "../../util/hist.h"
#include "../../util/sort.h"
#include "../../util/map.h"
+#include "../../util/mutex.h"
#include "../../util/symbol.h"
#include "../../util/evsel.h"
#include "../../util/evlist.h"
#include <inttypes.h>
-#include <pthread.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/zalloc.h>
diff --git a/tools/perf/ui/setup.c b/tools/perf/ui/setup.c
index 700335cde618..fd10dc6baf07 100644
--- a/tools/perf/ui/setup.c
+++ b/tools/perf/ui/setup.c
@@ -1,5 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
-#include <pthread.h>
#include <dlfcn.h>
#include <unistd.h>

@@ -8,7 +7,7 @@
#include "../util/hist.h"
#include "ui.h"

-pthread_mutex_t ui__lock = PTHREAD_MUTEX_INITIALIZER;
+struct mutex ui__lock;
void *perf_gtk_handle;
int use_browser = -1;

@@ -76,6 +75,7 @@ int stdio__config_color(const struct option *opt __maybe_unused,

void setup_browser(bool fallback_to_pager)
{
+ mutex_init(&ui__lock, /*pshared=*/false);
if (use_browser < 2 && (!isatty(1) || dump_trace))
use_browser = 0;

@@ -118,4 +118,5 @@ void exit_browser(bool wait_for_ok)
default:
break;
}
+ mutex_destroy(&ui__lock);
}
diff --git a/tools/perf/ui/tui/helpline.c b/tools/perf/ui/tui/helpline.c
index 298d6af82fdd..db4952f5990b 100644
--- a/tools/perf/ui/tui/helpline.c
+++ b/tools/perf/ui/tui/helpline.c
@@ -2,7 +2,6 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <pthread.h>
#include <linux/kernel.h>
#include <linux/string.h>

@@ -33,7 +32,7 @@ static int tui_helpline__show(const char *format, va_list ap)
int ret;
static int backlog;

- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);
ret = vscnprintf(ui_helpline__last_msg + backlog,
sizeof(ui_helpline__last_msg) - backlog, format, ap);
backlog += ret;
@@ -45,7 +44,7 @@ static int tui_helpline__show(const char *format, va_list ap)
SLsmg_refresh();
backlog = 0;
}
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);

return ret;
}
diff --git a/tools/perf/ui/tui/progress.c b/tools/perf/ui/tui/progress.c
index 3d74af5a7ece..71b6c8d9474f 100644
--- a/tools/perf/ui/tui/progress.c
+++ b/tools/perf/ui/tui/progress.c
@@ -45,7 +45,7 @@ static void tui_progress__update(struct ui_progress *p)
}

ui__refresh_dimensions(false);
- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);
y = SLtt_Screen_Rows / 2 - 2;
SLsmg_set_color(0);
SLsmg_draw_box(y, 0, 3, SLtt_Screen_Cols);
@@ -56,7 +56,7 @@ static void tui_progress__update(struct ui_progress *p)
bar = ((SLtt_Screen_Cols - 2) * p->curr) / p->total;
SLsmg_fill_region(y, 1, 1, bar, ' ');
SLsmg_refresh();
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);
}

static void tui_progress__finish(void)
@@ -67,12 +67,12 @@ static void tui_progress__finish(void)
return;

ui__refresh_dimensions(false);
- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);
y = SLtt_Screen_Rows / 2 - 2;
SLsmg_set_color(0);
SLsmg_fill_region(y, 0, 3, SLtt_Screen_Cols, ' ');
SLsmg_refresh();
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);
}

static struct ui_progress_ops tui_progress__ops = {
diff --git a/tools/perf/ui/tui/setup.c b/tools/perf/ui/tui/setup.c
index b1be59b4e2a4..a3b8c397c24d 100644
--- a/tools/perf/ui/tui/setup.c
+++ b/tools/perf/ui/tui/setup.c
@@ -29,10 +29,10 @@ void ui__refresh_dimensions(bool force)
{
if (force || ui__need_resize) {
ui__need_resize = 0;
- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);
SLtt_get_screen_size();
SLsmg_reinit_smg();
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);
}
}

@@ -170,10 +170,10 @@ void ui__exit(bool wait_for_ok)
"Press any key...", 0);

SLtt_set_cursor_visibility(1);
- if (!pthread_mutex_trylock(&ui__lock)) {
+ if (mutex_trylock(&ui__lock)) {
SLsmg_refresh();
SLsmg_reset_smg();
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);
}
SLang_reset_tty();
perf_error__unregister(&perf_tui_eops);
diff --git a/tools/perf/ui/tui/util.c b/tools/perf/ui/tui/util.c
index 0f562e2cb1e8..3c5174854ac8 100644
--- a/tools/perf/ui/tui/util.c
+++ b/tools/perf/ui/tui/util.c
@@ -95,7 +95,7 @@ int ui_browser__input_window(const char *title, const char *text, char *input,
t = sep + 1;
}

- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);

max_len += 2;
nr_lines += 8;
@@ -125,17 +125,17 @@ int ui_browser__input_window(const char *title, const char *text, char *input,
SLsmg_write_nstring((char *)exit_msg, max_len);
SLsmg_refresh();

- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);

x += 2;
len = 0;
key = ui__getch(delay_secs);
while (key != K_TIMER && key != K_ENTER && key != K_ESC) {
- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);

if (key == K_BKSPC) {
if (len == 0) {
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);
goto next_key;
}
SLsmg_gotorc(y, x + --len);
@@ -147,7 +147,7 @@ int ui_browser__input_window(const char *title, const char *text, char *input,
}
SLsmg_refresh();

- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);

/* XXX more graceful overflow handling needed */
if (len == sizeof(buf) - 1) {
@@ -215,19 +215,19 @@ void __ui__info_window(const char *title, const char *text, const char *exit_msg

void ui__info_window(const char *title, const char *text)
{
- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);
__ui__info_window(title, text, NULL);
SLsmg_refresh();
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);
}

int ui__question_window(const char *title, const char *text,
const char *exit_msg, int delay_secs)
{
- pthread_mutex_lock(&ui__lock);
+ mutex_lock(&ui__lock);
__ui__info_window(title, text, exit_msg);
SLsmg_refresh();
- pthread_mutex_unlock(&ui__lock);
+ mutex_unlock(&ui__lock);
return ui__getch(delay_secs);
}

diff --git a/tools/perf/ui/ui.h b/tools/perf/ui/ui.h
index 9b6fdf06e1d2..99f8d2fe9bc5 100644
--- a/tools/perf/ui/ui.h
+++ b/tools/perf/ui/ui.h
@@ -2,11 +2,11 @@
#ifndef _PERF_UI_H_
#define _PERF_UI_H_ 1

-#include <pthread.h>
+#include "../util/mutex.h"
#include <stdbool.h>
#include <linux/compiler.h>

-extern pthread_mutex_t ui__lock;
+extern struct mutex ui__lock;
extern void *perf_gtk_handle;

extern int use_browser;
--
2.37.2.609.g9ff673ca1a-goog