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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/renderer_host/render_process_host_browsertest.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/command_line.h"
#include "base/process.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/test/base/ui_test_utils.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/browser/tab_contents/tab_contents.h"
#include "content/common/test_url_constants.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/common/content_switches.h"
using content::WebContents;
RenderProcessHostTest::RenderProcessHostTest() {
EnableDOMAutomation();
}
int RenderProcessHostTest::RenderProcessHostCount() {
content::RenderProcessHost::iterator hosts =
content::RenderProcessHost::AllHostsIterator();
int count = 0;
while (!hosts.IsAtEnd()) {
if (hosts.GetCurrentValue()->HasConnection())
count++;
hosts.Advance();
}
return count;
}
void PostQuit(MessageLoop* loop) {
loop->PostTask(FROM_HERE, MessageLoop::QuitClosure());
}
// Show a tab, activating the current one if there is one, and wait for
// the renderer process to be created or foregrounded, returning the process
// handle.
base::ProcessHandle RenderProcessHostTest::ShowSingletonTab(const GURL& page) {
browser()->ShowSingletonTab(page);
WebContents* wc = browser()->GetSelectedWebContents();
CHECK(wc->GetURL() == page);
// Ensure that the backgrounding / foregrounding gets a chance to run.
content::BrowserThread::PostTaskAndReply(
content::BrowserThread::PROCESS_LAUNCHER, FROM_HERE,
base::Bind(&base::DoNothing), MessageLoop::QuitClosure());
MessageLoop::current()->Run();
return wc->GetRenderProcessHost()->GetHandle();
}
void RenderProcessHostTestWithCommandLine::SetUpCommandLine(
CommandLine* command_line) {
InProcessBrowserTest::SetUpCommandLine(command_line);
command_line->AppendSwitchASCII(switches::kRendererProcessLimit, "1");
}
// When we hit the max number of renderers, verify that the way we do process
// sharing behaves correctly. In particular, this test is verifying that even
// when we hit the max process limit, that renderers of each type will wind up
// in a process of that type, even if that means creating a new process.
void RenderProcessHostTest::TestProcessOverflow() {
int tab_count = 1;
int host_count = 1;
WebContents* tab1 = NULL;
WebContents* tab2 = NULL;
content::RenderProcessHost* rph1 = NULL;
content::RenderProcessHost* rph2 = NULL;
content::RenderProcessHost* rph3 = NULL;
#if defined(USE_VIRTUAL_KEYBOARD)
++host_count; // For the virtual keyboard.
#endif
// Change the first tab to be the new tab page (TYPE_WEBUI).
GURL newtab(chrome::kTestNewTabURL);
ui_test_utils::NavigateToURL(browser(), newtab);
EXPECT_EQ(tab_count, browser()->tab_count());
tab1 = browser()->GetWebContentsAt(tab_count - 1);
rph1 = tab1->GetRenderProcessHost();
EXPECT_EQ(tab1->GetURL(), newtab);
EXPECT_EQ(host_count, RenderProcessHostCount());
// Create a new TYPE_TABBED tab. It should be in its own process.
GURL page1("data:text/html,hello world1");
browser()->ShowSingletonTab(page1);
if (browser()->tab_count() == tab_count)
ui_test_utils::WaitForNewTab(browser());
tab_count++;
host_count++;
EXPECT_EQ(tab_count, browser()->tab_count());
tab1 = browser()->GetWebContentsAt(tab_count - 1);
rph2 = tab1->GetRenderProcessHost();
EXPECT_EQ(tab1->GetURL(), page1);
EXPECT_EQ(host_count, RenderProcessHostCount());
EXPECT_NE(rph1, rph2);
// Create another TYPE_TABBED tab. It should share the previous process.
GURL page2("data:text/html,hello world2");
browser()->ShowSingletonTab(page2);
if (browser()->tab_count() == tab_count)
ui_test_utils::WaitForNewTab(browser());
tab_count++;
EXPECT_EQ(tab_count, browser()->tab_count());
tab2 = browser()->GetWebContentsAt(tab_count - 1);
EXPECT_EQ(tab2->GetURL(), page2);
EXPECT_EQ(host_count, RenderProcessHostCount());
EXPECT_EQ(tab2->GetRenderProcessHost(), rph2);
// Create another TYPE_WEBUI tab. It should share the process with newtab.
// Note: intentionally create this tab after the TYPE_TABBED tabs to exercise
// bug 43448 where extension and WebUI tabs could get combined into normal
// renderers.
GURL history(chrome::kTestHistoryURL);
browser()->ShowSingletonTab(history);
if (browser()->tab_count() == tab_count)
ui_test_utils::WaitForNewTab(browser());
tab_count++;
EXPECT_EQ(tab_count, browser()->tab_count());
tab2 = browser()->GetWebContentsAt(tab_count - 1);
EXPECT_EQ(tab2->GetURL(), history);
EXPECT_EQ(host_count, RenderProcessHostCount());
EXPECT_EQ(tab2->GetRenderProcessHost(), rph1);
// Create a TYPE_EXTENSION tab. It should be in its own process.
// (the bookmark manager is implemented as an extension)
GURL bookmarks(chrome::kTestBookmarksURL);
browser()->ShowSingletonTab(bookmarks);
if (browser()->tab_count() == tab_count)
ui_test_utils::WaitForNewTab(browser());
tab_count++;
#if !defined(USE_VIRTUAL_KEYBOARD)
// The virtual keyboard already creates an extension process. So this
// should not increase the process count.
host_count++;
#endif
EXPECT_EQ(tab_count, browser()->tab_count());
tab1 = browser()->GetWebContentsAt(tab_count - 1);
rph3 = tab1->GetRenderProcessHost();
EXPECT_EQ(tab1->GetURL(), bookmarks);
EXPECT_EQ(host_count, RenderProcessHostCount());
EXPECT_NE(rph1, rph3);
EXPECT_NE(rph2, rph3);
}
IN_PROC_BROWSER_TEST_F(RenderProcessHostTest, ProcessPerTab) {
// Set max renderers to 1 to force running out of processes.
content::RenderProcessHost::SetMaxRendererProcessCount(1);
CommandLine& parsed_command_line = *CommandLine::ForCurrentProcess();
parsed_command_line.AppendSwitch(switches::kProcessPerTab);
int tab_count = 1;
int host_count = 1;
#if defined(USE_VIRTUAL_KEYBOARD)
++host_count; // For the virtual keyboard.
#endif
// Change the first tab to be the new tab page (TYPE_WEBUI).
GURL newtab(chrome::kTestNewTabURL);
ui_test_utils::NavigateToURL(browser(), newtab);
EXPECT_EQ(tab_count, browser()->tab_count());
EXPECT_EQ(host_count, RenderProcessHostCount());
// Create a new TYPE_TABBED tab. It should be in its own process.
GURL page1("data:text/html,hello world1");
browser()->ShowSingletonTab(page1);
if (browser()->tab_count() == tab_count)
ui_test_utils::WaitForNewTab(browser());
tab_count++;
host_count++;
EXPECT_EQ(tab_count, browser()->tab_count());
EXPECT_EQ(host_count, RenderProcessHostCount());
// Create another TYPE_TABBED tab. It should share the previous process.
GURL page2("data:text/html,hello world2");
browser()->ShowSingletonTab(page2);
if (browser()->tab_count() == tab_count)
ui_test_utils::WaitForNewTab(browser());
tab_count++;
EXPECT_EQ(tab_count, browser()->tab_count());
EXPECT_EQ(host_count, RenderProcessHostCount());
// Create another new tab. It should share the process with the other WebUI.
browser()->NewTab();
if (browser()->tab_count() == tab_count)
ui_test_utils::WaitForNewTab(browser());
tab_count++;
EXPECT_EQ(tab_count, browser()->tab_count());
EXPECT_EQ(host_count, RenderProcessHostCount());
// Create another new tab. It should share the process with the other WebUI.
browser()->NewTab();
if (browser()->tab_count() == tab_count)
ui_test_utils::WaitForNewTab(browser());
tab_count++;
EXPECT_EQ(tab_count, browser()->tab_count());
EXPECT_EQ(host_count, RenderProcessHostCount());
}
// We don't change process priorities on Mac or Posix because the user lacks the
// permission to raise a process' priority even after lowering it.
#if defined(OS_WIN) || defined(OS_LINUX)
IN_PROC_BROWSER_TEST_F(RenderProcessHostTest, Backgrounding) {
if (!base::Process::CanBackgroundProcesses()) {
LOG(ERROR) << "Can't background processes";
return;
}
CommandLine& parsed_command_line = *CommandLine::ForCurrentProcess();
parsed_command_line.AppendSwitch(switches::kProcessPerTab);
// Change the first tab to be the new tab page (TYPE_WEBUI).
GURL newtab(chrome::kTestNewTabURL);
ui_test_utils::NavigateToURL(browser(), newtab);
// Create a new tab. It should be foreground.
GURL page1("data:text/html,hello world1");
base::ProcessHandle pid1 = ShowSingletonTab(page1);
EXPECT_FALSE(base::Process(pid1).IsProcessBackgrounded());
// Create another tab. It should be foreground, and the first tab should
// now be background.
GURL page2("data:text/html,hello world2");
base::ProcessHandle pid2 = ShowSingletonTab(page2);
EXPECT_NE(pid1, pid2);
EXPECT_TRUE(base::Process(pid1).IsProcessBackgrounded());
EXPECT_FALSE(base::Process(pid2).IsProcessBackgrounded());
// Navigate back to first page. It should be foreground again, and the second
// tab should be background.
EXPECT_EQ(pid1, ShowSingletonTab(page1));
EXPECT_FALSE(base::Process(pid1).IsProcessBackgrounded());
EXPECT_TRUE(base::Process(pid2).IsProcessBackgrounded());
}
#endif
IN_PROC_BROWSER_TEST_F(RenderProcessHostTest, ProcessOverflow) {
// Set max renderers to 1 to force running out of processes.
content::RenderProcessHost::SetMaxRendererProcessCount(1);
TestProcessOverflow();
}
// Variation of the ProcessOverflow test, which is driven through command line
// parameter instead of direct function call into the class.
IN_PROC_BROWSER_TEST_F(RenderProcessHostTestWithCommandLine, ProcessOverflow) {
TestProcessOverflow();
}
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