2020-08-29 00:39:23 +02:00
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diff --git base/message_loop/message_pump_win.cc base/message_loop/message_pump_win.cc
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2024-10-24 17:05:31 +02:00
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index 94a1de886b530..dec2dd5f20721 100644
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2020-08-29 00:39:23 +02:00
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--- base/message_loop/message_pump_win.cc
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+++ base/message_loop/message_pump_win.cc
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@@ -2,6 +2,7 @@
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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+#include "base/task/current_thread.h"
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#include "base/message_loop/message_pump_win.h"
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2024-04-23 22:06:00 +02:00
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#include <winbase.h>
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2024-10-24 17:05:31 +02:00
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@@ -569,7 +570,17 @@ bool MessagePumpForUI::ProcessNextWindowsMessage() {
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2020-12-02 23:31:49 +01:00
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ctx.event()->set_chrome_message_pump();
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msg_pump_data->set_sent_messages_in_queue(more_work_is_plausible);
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});
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- has_msg = ::PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE) != FALSE;
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2024-05-23 03:52:35 +02:00
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+
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2020-12-02 23:31:49 +01:00
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+ // We should not process all window messages if we are in the context of an
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+ // OS modal loop, i.e. in the context of a windows API call like MessageBox.
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+ // This is to ensure that these messages are peeked out by the OS modal loop.
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+ if (CurrentThread::Get()->os_modal_loop()) {
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+ // We only peek out WM_PAINT and WM_TIMER here for reasons mentioned above.
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+ has_msg = PeekMessage(&msg, NULL, WM_PAINT, WM_PAINT, PM_REMOVE) ||
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+ PeekMessage(&msg, NULL, WM_TIMER, WM_TIMER, PM_REMOVE);
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+ } else {
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+ has_msg = PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) != FALSE;
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+ }
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}
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2020-08-29 00:39:23 +02:00
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}
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if (has_msg)
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diff --git base/task/current_thread.cc base/task/current_thread.cc
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2024-05-23 03:52:35 +02:00
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index c4f8862b21ccf..c8c80509abc91 100644
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2020-08-29 00:39:23 +02:00
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--- base/task/current_thread.cc
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+++ base/task/current_thread.cc
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2024-01-26 03:12:43 +01:00
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@@ -51,6 +51,8 @@ void CurrentThread::AddDestructionObserver(
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2018-09-06 17:32:01 +02:00
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2020-08-29 00:39:23 +02:00
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void CurrentThread::RemoveDestructionObserver(
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2018-09-06 17:32:01 +02:00
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DestructionObserver* destruction_observer) {
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+ if (!current_)
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+ return;
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2018-11-30 23:21:07 +01:00
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DCHECK(current_->IsBoundToCurrentThread());
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current_->RemoveDestructionObserver(destruction_observer);
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2018-09-06 17:32:01 +02:00
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}
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2020-08-29 00:39:23 +02:00
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diff --git base/task/current_thread.h base/task/current_thread.h
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2024-09-27 16:15:44 +02:00
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index 0be6acd709e53..cdadebb201547 100644
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2020-08-29 00:39:23 +02:00
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--- base/task/current_thread.h
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+++ base/task/current_thread.h
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2024-01-26 03:12:43 +01:00
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@@ -163,6 +163,12 @@ class BASE_EXPORT CurrentThread {
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RegisterOnNextIdleCallbackPasskey,
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OnceClosure on_next_idle_callback);
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2016-06-21 00:59:23 +02:00
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2022-01-25 21:26:51 +01:00
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+#if BUILDFLAG(IS_WIN)
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2019-03-13 22:27:37 +01:00
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+ void set_os_modal_loop(bool os_modal_loop) { os_modal_loop_ = os_modal_loop; }
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2016-06-21 00:59:23 +02:00
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+
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2019-03-13 22:27:37 +01:00
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+ bool os_modal_loop() const { return os_modal_loop_; }
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2016-06-21 00:59:23 +02:00
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+#endif // OS_WIN
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+
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2020-07-08 19:23:29 +02:00
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// Enables nested task processing in scope of an upcoming native message loop.
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// Some unwanted message loops may occur when using common controls or printer
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// functions. Hence, nested task processing is disabled by default to avoid
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2024-09-27 16:15:44 +02:00
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@@ -231,6 +237,13 @@ class BASE_EXPORT CurrentThread {
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2019-10-01 15:55:16 +02:00
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friend class web::WebTaskEnvironment;
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2018-11-30 23:21:07 +01:00
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2022-06-17 15:28:55 +02:00
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raw_ptr<sequence_manager::internal::SequenceManagerImpl> current_;
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2018-05-14 13:24:05 +02:00
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+
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2022-01-25 21:26:51 +01:00
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+#if BUILDFLAG(IS_WIN)
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2018-05-14 13:24:05 +02:00
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+ private:
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2016-06-21 00:59:23 +02:00
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+ // Should be set to true before calling Windows APIs like TrackPopupMenu, etc.
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+ // which enter a modal message loop.
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2017-05-31 17:33:30 +02:00
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+ bool os_modal_loop_ = false;
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2016-06-21 00:59:23 +02:00
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+#endif
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2018-05-14 13:24:05 +02:00
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};
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2022-01-25 21:26:51 +01:00
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#if !BUILDFLAG(IS_NACL)
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