Index: chrome/test/perf/generate_profile.cc |
=================================================================== |
--- chrome/test/perf/generate_profile.cc (revision 261647) |
+++ chrome/test/perf/generate_profile.cc (working copy) |
@@ -1,253 +0,0 @@ |
-// 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/test/perf/generate_profile.h" |
- |
-#include "base/at_exit.h" |
-#include "base/command_line.h" |
-#include "base/file_util.h" |
-#include "base/files/file_enumerator.h" |
-#include "base/files/file_path.h" |
-#include "base/i18n/icu_util.h" |
-#include "base/logging.h" |
-#include "base/message_loop/message_loop.h" |
-#include "base/path_service.h" |
-#include "base/strings/string_number_conversions.h" |
-#include "base/strings/utf_string_conversions.h" |
-#include "base/time/time.h" |
-#include "chrome/browser/history/history_service.h" |
-#include "chrome/browser/history/history_service_factory.h" |
-#include "chrome/browser/history/top_sites.h" |
-#include "chrome/common/chrome_paths.h" |
-#include "chrome/common/thumbnail_score.h" |
-#include "chrome/test/base/testing_browser_process.h" |
-#include "chrome/test/base/testing_profile.h" |
-#include "chrome/tools/profiles/thumbnail-inl.h" |
-#include "content/public/browser/browser_thread.h" |
-#include "content/public/browser/notification_service.h" |
-#include "content/public/test/test_browser_thread.h" |
-#include "third_party/skia/include/core/SkBitmap.h" |
-#include "ui/base/resource/resource_bundle.h" |
-#include "ui/base/ui_base_paths.h" |
-#include "ui/gfx/codec/jpeg_codec.h" |
- |
-using base::Time; |
-using content::BrowserThread; |
- |
-namespace { |
- |
-// Probabilities of different word lengths, as measured from Darin's profile. |
-// kWordLengthProbabilities[n-1] = P(word of length n) |
-const float kWordLengthProbabilities[] = { 0.069f, 0.132f, 0.199f, |
- 0.137f, 0.088f, 0.115f, 0.081f, 0.055f, 0.034f, 0.021f, 0.019f, 0.018f, |
- 0.007f, 0.007f, 0.005f, 0.004f, 0.003f, 0.003f, 0.003f }; |
- |
-// Return a float uniformly in [0,1]. |
-// Useful for making probabilistic decisions. |
-inline float RandomFloat() { |
- return rand() / static_cast<float>(RAND_MAX); |
-} |
- |
-// Return an integer uniformly in [min,max). |
-inline int RandomInt(int min, int max) { |
- return min + (rand() % (max-min)); |
-} |
- |
-// Return a string of |count| lowercase random characters. |
-base::string16 RandomChars(int count) { |
- base::string16 str; |
- for (int i = 0; i < count; ++i) |
- str += L'a' + rand() % 26; |
- return str; |
-} |
- |
-base::string16 RandomWord() { |
- // TODO(evanm): should we instead use the markov chain based |
- // version of this that I already wrote? |
- |
- // Sample a word length from kWordLengthProbabilities. |
- float sample = RandomFloat(); |
- size_t i; |
- for (i = 0; i < arraysize(kWordLengthProbabilities); ++i) { |
- sample -= kWordLengthProbabilities[i]; |
- if (sample < 0) break; |
- } |
- const int word_length = i + 1; |
- return RandomChars(word_length); |
-} |
- |
-// Return a string of |count| random words. |
-base::string16 RandomWords(int count) { |
- base::string16 str; |
- for (int i = 0; i < count; ++i) { |
- if (!str.empty()) |
- str += L' '; |
- str += RandomWord(); |
- } |
- return str; |
-} |
- |
-// Return a random URL-looking string. |
-GURL ConstructRandomURL() { |
- return GURL(base::ASCIIToUTF16("http://") + RandomChars(3) + |
- base::ASCIIToUTF16(".com/") + RandomChars(RandomInt(5, 20))); |
-} |
- |
-// Return a random page title-looking string. |
-base::string16 ConstructRandomTitle() { |
- return RandomWords(RandomInt(3, 15)); |
-} |
- |
-// Insert a batch of |batch_size| URLs, starting at pageid |page_id|. |
-void InsertURLBatch(Profile* profile, |
- int page_id, |
- int batch_size, |
- int types) { |
- HistoryService* history_service = |
- HistoryServiceFactory::GetForProfile(profile, Profile::EXPLICIT_ACCESS); |
- |
- // Probability of following a link on the current "page" |
- // (vs randomly jumping to a new page). |
- const float kFollowLinkProbability = 0.85f; |
- // Probability of visiting a page we've visited before. |
- const float kRevisitLinkProbability = 0.1f; |
- // Probability of a URL being "good enough" to revisit. |
- const float kRevisitableURLProbability = 0.05f; |
- // Probability of a URL being the end of a redirect chain. |
- const float kRedirectProbability = 0.05f; |
- |
- // A list of URLs that we sometimes revisit. |
- std::vector<GURL> revisit_urls; |
- |
- // Scoping value for page IDs (required by the history service). |
- void* id_scope = reinterpret_cast<void*>(1); |
- |
- scoped_refptr<base::RefCountedMemory> google_bitmap( |
- new base::RefCountedStaticMemory(kGoogleThumbnail, |
- sizeof(kGoogleThumbnail))); |
- scoped_refptr<base::RefCountedMemory> weewar_bitmap( |
- new base::RefCountedStaticMemory(kWeewarThumbnail, |
- sizeof(kWeewarThumbnail))); |
- |
- printf("Inserting %d URLs...\n", batch_size); |
- GURL previous_url; |
- content::PageTransition transition = content::PAGE_TRANSITION_TYPED; |
- const int end_page_id = page_id + batch_size; |
- history::TopSites* top_sites = profile->GetTopSites(); |
- for (; page_id < end_page_id; ++page_id) { |
- // Randomly decide whether this new URL simulates following a link or |
- // whether it's a jump to a new URL. |
- if (!previous_url.is_empty() && RandomFloat() < kFollowLinkProbability) { |
- transition = content::PAGE_TRANSITION_LINK; |
- } else { |
- previous_url = GURL(); |
- transition = content::PAGE_TRANSITION_TYPED; |
- } |
- |
- // Pick a URL, either newly at random or from our list of previously |
- // visited URLs. |
- GURL url; |
- if (!revisit_urls.empty() && RandomFloat() < kRevisitLinkProbability) { |
- // Draw a URL from revisit_urls at random. |
- url = revisit_urls[RandomInt(0, static_cast<int>(revisit_urls.size()))]; |
- } else { |
- url = ConstructRandomURL(); |
- } |
- |
- // Randomly construct a redirect chain. |
- history::RedirectList redirects; |
- if (RandomFloat() < kRedirectProbability) { |
- const int redir_count = RandomInt(1, 4); |
- for (int i = 0; i < redir_count; ++i) |
- redirects.push_back(ConstructRandomURL()); |
- redirects.push_back(url); |
- } |
- |
- // Add all of this information to the history service. |
- history_service->AddPage(url, base::Time::Now(), |
- id_scope, page_id, |
- previous_url, redirects, |
- transition, history::SOURCE_BROWSED, true); |
- ThumbnailScore score(0.75, false, false); |
- history_service->SetPageTitle(url, ConstructRandomTitle()); |
- if (types & TOP_SITES && top_sites) { |
- top_sites->SetPageThumbnailToJPEGBytes( |
- url, |
- (RandomInt(0, 2) == 0) ? google_bitmap.get() : weewar_bitmap.get(), |
- score); |
- } |
- |
- previous_url = url; |
- |
- if (revisit_urls.empty() || RandomFloat() < kRevisitableURLProbability) |
- revisit_urls.push_back(url); |
- } |
-} |
- |
-} // namespace |
- |
-bool GenerateProfile(GenerateProfileTypes types, |
- int url_count, |
- const base::FilePath& dst_dir) { |
- if (!base::CreateDirectory(dst_dir)) { |
- PLOG(ERROR) << "Unable to create directory " << dst_dir.value().c_str(); |
- return false; |
- } |
- |
- // We want this profile to be as deterministic as possible, so seed the |
- // random number generator with the number of urls we're generating. |
- srand(static_cast<unsigned int>(url_count)); |
- |
- printf("Creating profiles for testing...\n"); |
- |
- TestingBrowserProcessInitializer initialize_browser_process; |
- base::MessageLoopForUI message_loop; |
- content::TestBrowserThread ui_thread(BrowserThread::UI, &message_loop); |
- content::TestBrowserThread db_thread(BrowserThread::DB, &message_loop); |
- TestingProfile profile; |
- if (!profile.CreateHistoryService(false, false)) { |
- PLOG(ERROR) << "Creating history service failed"; |
- return false; |
- } |
- if (types & TOP_SITES) { |
- profile.CreateTopSites(); |
- profile.BlockUntilTopSitesLoaded(); |
- } |
- |
- // The maximum number of URLs to insert into history in one batch. |
- const int kBatchSize = 2000; |
- int page_id = 0; |
- while (page_id < url_count) { |
- const int batch_size = std::min(kBatchSize, url_count - page_id); |
- InsertURLBatch(&profile, page_id, batch_size, types); |
- // Run all pending messages to give TopSites a chance to catch up. |
- message_loop.RunUntilIdle(); |
- page_id += batch_size; |
- } |
- |
- profile.DestroyTopSites(); |
- profile.DestroyHistoryService(); |
- |
- message_loop.RunUntilIdle(); |
- |
- base::FileEnumerator file_iterator(profile.GetPath(), false, |
- base::FileEnumerator::FILES); |
- base::FilePath path = file_iterator.Next(); |
- while (!path.empty()) { |
- base::FilePath dst_file = dst_dir.Append(path.BaseName()); |
- base::DeleteFile(dst_file, false); |
- if (!base::CopyFile(path, dst_file)) { |
- PLOG(ERROR) << "Copying file failed"; |
- return false; |
- } |
- path = file_iterator.Next(); |
- } |
- |
- printf("Finished creating profiles for testing.\n"); |
- |
- // Restore the random seed. |
- srand(static_cast<unsigned int>(Time::Now().ToInternalValue())); |
- |
- return true; |
-} |