Reland r140188: CommandLine Page Cycler

chrome/browser/page_cycler/page_cycler.cc

Index: chrome/browser/page_cycler/page_cycler.cc
diff --git a/chrome/browser/page_cycler/page_cycler.cc b/chrome/browser/page_cycler/page_cycler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..78663283901921653fed2aa467afd4e87cbd37ca
--- /dev/null
+++ b/chrome/browser/page_cycler/page_cycler.cc
@@ -0,0 +1,263 @@
+// 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 "chrome/browser/page_cycler/page_cycler.h"
+
+#include "base/bind.h"
+#include "base/file_path.h"
+#include "base/file_util.h"
+#include "base/message_loop.h"
+#include "base/process_util.h"
+#include "base/string_number_conversions.h"
+#include "base/string_split.h"
+#include "base/utf_string_conversions.h"
+#include "chrome/app/chrome_command_ids.h"
+#include "chrome/common/chrome_notification_types.h"
+#include "chrome/test/base/chrome_process_util.h"
+#include "chrome/test/perf/perf_test.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/notification_service.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/common/url_constants.h"
+
+using content::NavigationController;
+using content::OpenURLParams;
+using content::Referrer;
+using content::WebContents;
+
+PageCycler::PageCycler(Browser* browser,
+                       FilePath urls_file)
+    : content::WebContentsObserver(browser->GetSelectedWebContents()),
+      browser_(browser),
+      urls_file_(urls_file),
+      url_index_(0),
+      total_iterations_(0),
+      current_iteration_(0),
+      aborted_(false) {
+  BrowserList::AddObserver(this);
+  AddRef();  // Balanced in Finish()/Abort() (only one should be called).
+}
+
+PageCycler::~PageCycler() {
+}
+
+bool PageCycler::IsLoadCallbackValid(const GURL& validated_url,
+                                     bool is_main_frame) {
+  // If |url_index_| is equal to zero, that means that this was called before
+  // LoadNextURL() - this can happen at startup, loading the new tab page; or
+  // if the user specified a bad url as the final url in the list. In these
+  // cases, do not report success or failure, and load the next page.
+  if (!url_index_) {
+    LoadNextURL();
+    return false;
+  }
+  return (is_main_frame &&
+          validated_url.spec() != content::kUnreachableWebDataURL);
+}
+
+void PageCycler::DidFinishLoad(int64 frame_id,
+                               const GURL& validated_url,
+                               bool is_main_frame) {
+  if (IsLoadCallbackValid(validated_url, is_main_frame))
+    LoadSucceeded();
+}
+
+void PageCycler::DidFailProvisionalLoad(
+    int64 frame_id,
+    bool is_main_frame,
+    const GURL& validated_url,
+    int error_code,
+    const string16& error_description,
+    content::RenderViewHost* render_view_host) {
+  if (IsLoadCallbackValid(validated_url, is_main_frame))
+    LoadFailed(validated_url, error_description);
+}
+
+void PageCycler::Run(const int& total_iterations) {
+  total_iterations_ = total_iterations;
+  if (browser_)
+    content::BrowserThread::PostBlockingPoolTask(
+        FROM_HERE,
+        base::Bind(&PageCycler::ReadURLsOnBackgroundThread, this));
+}
+
+void PageCycler::ReadURLsOnBackgroundThread() {
+  CHECK(!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+
+  std::string file_contents;
+  std::vector<std::string> url_strings;
+
+  CHECK(file_util::PathExists(urls_file_)) << urls_file_.value();
+  file_util::ReadFileToString(urls_file_, &file_contents);
+  base::SplitStringAlongWhitespace(file_contents, &url_strings);
+
+  if (!url_strings.size()) {
+#if defined(OS_POSIX)
+    error_.append(ASCIIToUTF16("Page Cycler: No URLs in given file: " +
+        urls_file_.value()));
+#elif defined(OS_WIN)
+    error_.append(ASCIIToUTF16("Page Cycler: No URLs in given file: "))
+          .append(urls_file_.value());
+#endif  // OS_WIN
+  }
+
+  for (std::vector<std::string>::const_iterator iter = url_strings.begin();
+       iter != url_strings.end(); ++iter) {
+    GURL gurl(*iter);
+    if (!gurl.is_valid())
+      error_.append(ASCIIToUTF16("Omitting invalid URL: " + *iter + ".\n"));
+    // Since we don't count kUnreachableWebData as a valid load, we don't want
+    // the user to specify this as one of the pages to visit.
+    else if (*iter == content::kUnreachableWebDataURL) {
+      error_.append(ASCIIToUTF16(
+          "Chrome error pages are not allowed as urls. Omitting url: " +
+          *iter + ".\n"));
+    } else {
+      urls_.push_back(gurl);
+    }
+  }
+
+  content::BrowserThread::PostTask(content::BrowserThread::UI,
+                                   FROM_HERE,
+                                   base::Bind(&PageCycler::BeginCycle, this));
+}
+
+void PageCycler::BeginCycle() {
+  CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+
+  CHECK(browser_);
+  // Upon launch, Chrome will automatically load the newtab page. This can
+  // result in the browser being in a state of loading when PageCycler is ready
+  // to start. Instead of interrupting the load, we wait for it to finish, and
+  // will call LoadNextURL() from DidFinishLoad() or DidFailProvisionalLoad().
+  if (browser_->GetSelectedWebContents()->IsLoading())
+    return;
+  LoadNextURL();
+}
+
+void PageCycler::LoadNextURL() {
+  CHECK(browser_);
+  if (url_index_ >= urls_.size()) {
+    if (current_iteration_ < total_iterations_ - 1) {
+      ++current_iteration_;
+      url_index_ = 0;
+    } else {
+      content::BrowserThread::PostBlockingPoolTask(
+          FROM_HERE,
+          base::Bind(&PageCycler::PrepareResultsOnBackgroundThread, this));
+      return;
+    }
+  }
+  if (url_index_ || current_iteration_) {
+    timings_string_.append(", ");
+    urls_string_.append(", ");
+  }
+  urls_string_.append(urls_[url_index_].spec());
+  initial_time_ = base::TimeTicks::HighResNow();
+  OpenURLParams params(urls_[url_index_],
+                       Referrer(),
+                       CURRENT_TAB,
+                       content::PAGE_TRANSITION_TYPED,
+                       false);
+  ++url_index_;
+  browser_->OpenURL(params);
+}
+
+void PageCycler::LoadSucceeded() {
+  base::TimeDelta time_elapsed =
+      (base::TimeTicks::HighResNow() - initial_time_) / 1000.0;
+  timings_string_.append(base::Int64ToString(time_elapsed.ToInternalValue()));
+  LoadNextURL();
+}
+
+void PageCycler::LoadFailed(const GURL& url,
+                            const string16& error_description) {
+  error_.append(ASCIIToUTF16("Failed to load the page at: " +
+      url.spec() + ": ")).append(error_description).
+      append(ASCIIToUTF16("\n"));
+  base::TimeDelta time_elapsed =
+      (base::TimeTicks::HighResNow() - initial_time_) / 1000.0;
+  timings_string_.append(base::Int64ToString(time_elapsed.ToInternalValue()) +
+      (" (failed)"));
+  LoadNextURL();
+}
+
+void PageCycler::PrepareResultsOnBackgroundThread() {
+  CHECK(!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  std::string output;
+  if (!stats_file_.empty()) {
+#if defined(OS_POSIX)
+    base::ProcessId pid = base::GetParentProcessId(base::GetCurrentProcId());
+#elif defined(OS_WIN)
+    base::ProcessId pid = base::GetCurrentProcId();
+#endif  // OS_WIN
+    ChromeProcessList chrome_processes(GetRunningChromeProcesses(pid));
+    output += perf_test::MemoryUsageInfoToString("", chrome_processes, pid);
+    output += perf_test::IOPerfInfoToString("", chrome_processes, pid);
+    output += perf_test::SystemCommitChargeToString("",
+              base::GetSystemCommitCharge(), false);
+    output.append("Pages: [" + urls_string_ + "]\n");
+    output.append("*RESULT times: t_ref= [" + timings_string_ + "] ms\n");
+  }
+  WriteResultsOnBackgroundThread(output);
+}
+
+void PageCycler::WriteResultsOnBackgroundThread(std::string output) {
+  CHECK(!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+
+  if (!output.empty()) {
+    CHECK(!stats_file_.empty());
+    file_util::WriteFile(stats_file_, output.c_str(), output.size());
+  }
+  if (!errors_file_.empty()) {
+    if (!error_.empty()) {
+      file_util::WriteFile(errors_file_, UTF16ToUTF8(error_).c_str(),
+                           error_.size());
+    } else if (file_util::PathExists(errors_file_)) {
+      // If there is an old error file, delete it to avoid confusion.
+      file_util::Delete(errors_file_, false);
+    }
+  }
+  if (aborted_) {
+    content::BrowserThread::PostTask(content::BrowserThread::UI,
+                                     FROM_HERE,
+                                     base::Bind(&PageCycler::Abort, this));
+  } else {
+    content::BrowserThread::PostTask(content::BrowserThread::UI,
+                                     FROM_HERE,
+                                     base::Bind(&PageCycler::Finish, this));
+  }
+}
+
+void PageCycler::Finish() {
+  CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  BrowserList::RemoveObserver(this);
+  browser_->OnWindowClosing();
+  browser_->ExecuteCommand(IDC_EXIT);
+  Release();  // Balanced in PageCycler constructor;
+              // (only one of Finish/Abort should be called).
+}
+
+void PageCycler::Abort() {
+  browser_ = NULL;
+  BrowserList::RemoveObserver(this);
+  Release();  // Balanced in PageCycler constructor;
+              // (only one of Finish/Abort should be called).
+}
+
+void PageCycler::OnBrowserAdded(Browser* browser) {}
+
+void PageCycler::OnBrowserRemoved(Browser* browser) {
+  if (browser == browser_) {
+    aborted_ = true;
+    error_.append(ASCIIToUTF16(
+        "Browser was closed before the run was completed."));
+    DLOG(WARNING) <<
+        "Page Cycler: browser was closed before the run was completed.";
+    content::BrowserThread::PostBlockingPoolTask(
+        FROM_HERE,
+        base::Bind(&PageCycler::PrepareResultsOnBackgroundThread, this));
+  }
+}