chromium/chrome/browser/ui/hung_renderer/hung_renderer_core.cc

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/ui/hung_renderer/hung_renderer_core.h"

#include "base/i18n/rtl.h"
#include "base/ranges/algorithm.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
#include "chrome/browser/ui/tab_contents/tab_contents_iterator.h"
#include "chrome/grit/generated_resources.h"
#include "components/url_formatter/url_formatter.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/web_contents.h"
#include "ui/base/l10n/l10n_util.h"
#include "url/gurl.h"

namespace {

// Author's Note:
//
// The inefficiency of walking the frame tree repeatedly has not gone unnoticed.
// Given the different requirements of the Cocoa and Views implementations of
// the Hung Page dialog, this is the simplest way. When we consolidate
// implementations, it will be a good idea to reconsider this approach.

// Returns the first RenderFrameHost that has a process that matches
// `hung_process`.
content::RenderFrameHost* FindFirstRenderFrameHostMatchingProcess(
    content::WebContents* web_contents,
    content::RenderProcessHost* hung_process) { … }

// Returns whether the WebContents has a frame that is backed by the hung
// process.
bool IsWebContentsHung(content::WebContents* web_contents,
                       content::RenderProcessHost* hung_process) { … }

// Returns the URL of the first hung frame encountered in the WebContents.
GURL GetURLOfAnyHungFrame(content::WebContents* web_contents,
                          content::RenderProcessHost* hung_process) { … }

}  // namespace

std::vector<content::WebContents*> GetHungWebContentsList(
    content::WebContents* hung_web_contents,
    content::RenderProcessHost* hung_process) { … }

// Given a WebContents that is affected by the hang, and the RenderProcessHost
// of the hung process, returns the title of the WebContents that should be used
// in the "Hung Page" dialog.
std::u16string GetHungWebContentsTitle(
    content::WebContents* affected_web_contents,
    content::RenderProcessHost* hung_process) { … }