1763414 - Allow gfxFontEntry instances to be used from multiple threads simultaneously

Status: RESOLVED FIXED

(Core :: Layout: Text and Fonts, defect, P2)

Description

[Jonathan Kew [:jfkthame]]

For offscreen-canvas text, we'll need access to the gfxFontEntry instances for whatever fonts are being used.

In principle gfxFontEntry is "inert" once constructed, so (read) access from multiple threads should be allowable; however, a lot of the subsidiary data in the font entry (loaded font tables, charmaps, SVG or color glyph data, math layout data, etc) is loaded lazily on first use. So we'll need to ensure this is done with appropriate locking and/or atomic operations.

Comment 1

[Jonathan Kew [:jfkthame]]

Attachment: Bug 1763414 - Make gfxFontEntry instances usable from multiple threads. r=lsalzman

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/1b885ef9e84d
Make gfxFontEntry instances usable from multiple threads. r=lsalzman

Comment 3

[Iulian Moraru]

https://hg.mozilla.org/mozilla-central/rev/1b885ef9e84d