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8210384: SunLayoutEngine.isAAT() font is expensive on MacOS

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Reviewed-by: dmarkov, kaddepalli
This commit is contained in:
Phil Race 2018-09-09 11:19:57 -07:00
parent 5178c24a45
commit 222c1eb393
1 changed files with 17 additions and 3 deletions
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20
src/java.desktop/share/classes/sun/font/SunLayoutEngine.java
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@ -35,6 +35,7 @@ import java.awt.geom.Point2D;
import java.lang.ref.SoftReference;
import java.util.concurrent.ConcurrentHashMap;
import java.util.Locale;
import java.util.WeakHashMap;
/*
* different ways to do this
@ -148,17 +149,30 @@ public final class SunLayoutEngine implements LayoutEngine, LayoutEngineFactory
this.key = key;
}
static WeakHashMap<Font2D, Boolean> aatInfo = new WeakHashMap<>();
private boolean isAAT(Font2D font) {
Boolean aatObj;
synchronized (aatInfo) {
aatObj = aatInfo.get(font);
}
if (aatObj != null) {
return aatObj.booleanValue();
}
boolean aat = false;
if (font instanceof TrueTypeFont) {
TrueTypeFont ttf = (TrueTypeFont)font;
return ttf.getDirectoryEntry(TrueTypeFont.morxTag) != null ||
aat = ttf.getDirectoryEntry(TrueTypeFont.morxTag) != null ||
ttf.getDirectoryEntry(TrueTypeFont.mortTag) != null;
} else if (font instanceof PhysicalFont) {
PhysicalFont pf = (PhysicalFont)font;
return pf.getTableBytes(TrueTypeFont.morxTag) != null ||
aat = pf.getTableBytes(TrueTypeFont.morxTag) != null ||
pf.getTableBytes(TrueTypeFont.mortTag) != null;
}
return false;
synchronized (aatInfo) {
aatInfo.put(font, Boolean.valueOf(aat));
}
return aat;
}
public void layout(FontStrikeDesc desc, float[] mat, float ptSize, int gmask,