Changeset 236971 in webkit

Timestamp:

Oct 9, 2018, 11:38:47 AM (8 years ago)

Author:

Antti Koivisto

Message:

[PSON] Prewarm system UI font
​https://bugs.webkit.org/show_bug.cgi?id=190397

Reviewed by Geoffrey Garen.

Cache system UI font fallbacks. Almost every web process needs these.

• page/ProcessWarming.cpp:

(WebCore::ProcessWarming::prewarmGlobally):

Location:

trunk/Source/WebCore

Files:

• ChangeLog (modified) (1 diff)
• page/ProcessWarming.cpp (modified) (2 diffs)

trunk/Source/WebCore/ChangeLog

@@ +1 @@
+2018-10-09  Antti Koivisto  <antti@apple.com>
+
+        [PSON] Prewarm system UI font
+        https://bugs.webkit.org/show_bug.cgi?id=190397
+
+        Reviewed by Geoffrey Garen.
+
+        Cache system UI font fallbacks. Almost every web process needs these.
+
+        * page/ProcessWarming.cpp:
+        (WebCore::ProcessWarming::prewarmGlobally):
+
 2018-10-09  Chris Dumez  <cdumez@apple.com>
 

trunk/Source/WebCore/page/ProcessWarming.cpp

@@ -31 +31 @@
 #include "Font.h"
 #include "FontCache.h"
+#include "FontCascadeDescription.h"
 #include "HTMLNames.h"
 #include "MathMLNames.h"
@@ -71 +72 @@
     // Prewarms JS VM.
     commonVM();
-    
+
+#if USE_PLATFORM_SYSTEM_FALLBACK_LIST
+    // Cache system UI font fallbacks. Almost every web process needs these.
+    // Initializing one size is sufficient to warm CoreText caches.
+    FontCascadeDescription systemFontDescription;
+    systemFontDescription.setOneFamily("system-ui");
+    systemFontDescription.setComputedSize(11);
+    systemFontDescription.effectiveFamilyCount();
+#endif
+
 #if ENABLE(TELEPHONE_NUMBER_DETECTION)
     TelephoneNumberDetector::isSupported();