diff options
| author |  mtklein <mtklein@chromium.org> | 2016-08-10 16:30:33 -0700 |
|---|---|---|
| committer |  Commit bot <commit-bot@chromium.org> | 2016-08-10 16:30:33 -0700 |
| commit | ac243914af957a806d842318a43dddaf5f941dc3 (patch) | |
| tree | fcaf75a4073629cd18d2b96d038f9af4fbd8eeb8 /src/core/SkLiteDL.h | |
| parent | fea704e115f6298f629e9293c506a039af7db0eb (diff) | |
SkLiteDL: turn vtable sideways
Instead of using virtuals for polymorphism, store each polymorphic operation
in its own array of function pointers. This removes an indirection when calling
the function, and lets us use nullptr as a signal to skip the call entirely.
Unfortunately (as the old code is rather simpler) this makes an unambiguous speed improvement.
Before:
curr/maxrss loops min median mean max stddev samples config bench
21/26 MB 2 44.6µs 46.4µs 48.3µs 274µs 13% 51724 nonrendering desk_nytimes.skp
23/26 MB 11 11.4µs 11.9µs 12.4µs 75.1µs 15% 36716 nonrendering keymobi_nytimes_com_.skp
After:
19/26 MB 4 40.4µs 41.6µs 42.5µs 197µs 10% 29379 nonrendering desk_nytimes.skp
20/26 MB 14 10.5µs 10.7µs 11.2µs 59.5µs 13% 31971 nonrendering keymobi_nytimes_com_.skp
Broader comparison:
keymobi_linkedin.skp 1.76us -> 1.77us 1x
keymobi_bing_com_search_q_sloth.skp 5.09us -> 5.05us 0.99x
keymobi_digg_com.skp 17.4us -> 17.3us 0.99x
keymobi_theverge_com.skp 3.37us -> 3.34us 0.99x
top25desk_mail_google_com_mail_.skp 30.8us -> 30.4us 0.99x
tabl_gmail.skp 3.44us -> 3.38us 0.98x
top25desk_wikipedia__1_tab_.skp 100us -> 97.7us 0.98x
keymobi_cnn_com_2012_10_03_poli.skp 52.9us -> 51.7us 0.98x
desk_chalkboard.skp 107us -> 104us 0.97x
desk_css3gradients.skp 17.8us -> 17.3us 0.97x
keymobi_androidpolice_com_2012_.skp 42.3us -> 41.1us 0.97x
desk_googlehome.skp 1.94us -> 1.88us 0.97x
keymobi_mlb_com_.skp 5.38us -> 5.18us 0.96x
top25desk_pinterest.skp 92.1us -> 88.5us 0.96x
keymobi_iphone_capitolvolkswage.skp 15.1us -> 14.5us 0.96x
keymobi_techcrunch_com.skp 9.45us -> 9.05us 0.96x
desk_espn.skp 31.3us -> 30us 0.96x
keymobi_slashdot_org_.skp 8.72us -> 8.34us 0.96x
desk_tiger8svg.skp 30.6us -> 29.2us 0.96x
keymobi_blogger.skp 4.09us -> 3.91us 0.95x
keymobi_baidu_com_s_wd_barack_o.skp 11.9us -> 11.3us 0.95x
keymobi_cuteoverload_com.skp 54.2us -> 51.6us 0.95x
keymobi_deviantart_com_.skp 17.2us -> 16.4us 0.95x
desk_mapsvg.skp 163ns -> 155ns 0.95x
keymobi_pinterest.skp 6.97us -> 6.62us 0.95x
top25desk_games_yahoo_com.skp 94.1us -> 89.3us 0.95x
top25desk_google_com_calendar_.skp 18us -> 17us 0.95x
keymobi_google_co_uk_search_hl_.skp 11.4us -> 10.8us 0.95x
tabl_pravda.skp 38.5us -> 36.4us 0.94x
desk_gmailthread.skp 19us -> 17.9us 0.94x
keymobi_reddit_com_r_programmin.skp 76.1us -> 71.7us 0.94x
top25desk_linkedin.skp 20us -> 18.8us 0.94x
tabl_gamedeksiam.skp 118us -> 112us 0.94x
keymobi_boingboing_net.skp 20.4us -> 19.1us 0.93x
top25desk_google_com__hl_en_q_b.skp 17.6us -> 16.4us 0.93x
keymobi_amazon_com_gp_aw_s_ref_.skp 12.5us -> 11.6us 0.93x
keymobi_sfgate_com_.skp 16.6us -> 15.5us 0.93x
keymobi_booking_com_searchresul.skp 16.2us -> 15.1us 0.93x
tabl_digg.skp 28.8us -> 26.8us 0.93x
tabl_mozilla.skp 80.4us -> 74.6us 0.93x
desk_wowwiki.skp 39.2us -> 36.4us 0.93x
top25desk_youtube_com.skp 42us -> 38.9us 0.93x
top25desk_facebook.skp 23.7us -> 22us 0.93x
top25desk_blogger.skp 38.2us -> 35.4us 0.93x
keymobi_online_wsj_com_home_pag.skp 12.8us -> 11.9us 0.93x
top25desk_wordpress.skp 28.9us -> 26.8us 0.93x
top25desk_answers_yahoo_com.skp 37.2us -> 34.4us 0.93x
keymobi_plus_google_com_app_bas.skp 9.56us -> 8.85us 0.93x
keymobi_wordpress.skp 16.1us -> 14.9us 0.92x
keymobi_mobile_news_sandbox_goo.skp 27.1us -> 24.9us 0.92x
top25desk_techcrunch_com.skp 31.1us -> 28.6us 0.92x
keymobi_worldjournal_com_.skp 50.7us -> 46.5us 0.92x
keymobi_theverge_com_2012_10_28.skp 26.2us -> 24us 0.92x
desk_jsfiddlebigcar.skp 1.73us -> 1.59us 0.92x
top25desk_weather_com.skp 31.3us -> 28.7us 0.92x
top25desk_google_com_search_q_c.skp 48.2us -> 44.1us 0.92x
top25desk_twitter.skp 27.8us -> 25.5us 0.92x
tabl_worldjournal.skp 29.3us -> 26.8us 0.91x
desk_nytimes.skp 46us -> 42us 0.91x
top25desk_docs___1_open_documen.skp 6.04us -> 5.51us 0.91x
keymobi_wikipedia__1_tab_.skp 59.7us -> 54.4us 0.91x
desk_unicodetable.skp 1.12ms -> 1.02ms 0.91x
top25desk_ebay_com.skp 17.8us -> 16.2us 0.91x
keymobi_ftw_usatoday_com_2014_0.skp 26.8us -> 24.3us 0.91x
top25desk_sports_yahoo_com_.skp 49.9us -> 45.3us 0.91x
keymobi_cnn_com.skp 9.94us -> 9.03us 0.91x
keymobi_m_youtube_com_watch_v_9.skp 13.4us -> 12.2us 0.91x
top25desk_amazon_com.skp 26.6us -> 24.1us 0.91x
keymobi_news_yahoo_com.skp 17.5us -> 15.8us 0.9x
keymobi_wowwiki_com_world_of_wa.skp 11.2us -> 10.2us 0.9x
top25desk_plus_google_com_11003.skp 93.5us -> 84.4us 0.9x
desk_carsvg.skp 53.5us -> 48.2us 0.9x
top25desk_news_yahoo_com.skp 44.7us -> 40.3us 0.9x
keymobi_wikipedia__1_tab____del.skp 59.4us -> 53.4us 0.9x
desk_googlespreadsheet.skp 66us -> 59.2us 0.9x
keymobi_answers_yahoo_com_quest.skp 30.2us -> 27us 0.89x
desk_ugamsolutions.skp 13us -> 11.6us 0.89x
keymobi_shop_mobileweb_ebay_com.skp 6.96us -> 6.21us 0.89x
keymobi_nytimes_com_.skp 12.1us -> 10.8us 0.89x
keymobi_gsp_ro.skp 5.54us -> 4.92us 0.89x
top25desk_booking_com.skp 54.9us -> 48.6us 0.89x
top25desk_espn.skp 37us -> 32.6us 0.88x
keymobi_facebook_com_barackobam.skp 23.3us -> 20.4us 0.88x
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2231103002
Review-Url: https://codereview.chromium.org/2231103002
Diffstat (limited to 'src/core/SkLiteDL.h')
| -rw-r--r-- | src/core/SkLiteDL.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/core/SkLiteDL.h b/src/core/SkLiteDL.h index 27e3f27645..07983662cc 100644 --- a/src/core/SkLiteDL.h +++ b/src/core/SkLiteDL.h @@ -89,8 +89,8 @@ private: template <typename T, typename... Args> void* push(size_t, Args&&...); - template <typename Fn> - void map(Fn&& fn); + template <typename... Args> + void map(void (*const [])(void*, Args...), Args...); SkAutoTMalloc<uint8_t> fBytes; size_t fUsed; |