diff options
Diffstat (limited to 'content/common/font_list.h')
| -rw-r--r-- | content/common/font_list.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/content/common/font_list.h b/content/common/font_list.h index 4f59e6d..dd14ce7 100644 --- a/content/common/font_list.h +++ b/content/common/font_list.h @@ -13,6 +13,11 @@ class ListValue; namespace content { +// Getting the list of fonts on the system is non-threadsafe on Linux for +// versions of Pango predating 2013. This sequence token can be used to enforce +// serial execution of get font list tasks. +extern const char kFontListSequenceToken[]; + // Retrieves the fonts available on the current platform and returns them. // The caller will own the returned pointer. Each entry will be a list of // two strings, the first being the font family, and the second being the @@ -21,6 +26,9 @@ namespace content { // This function is potentially slow (the system may do a bunch of I/O) so be // sure not to call this on a time-critical thread like the UI or I/O threads. // +// Since getting the fonts is not threadsafe on Linux, use +// |kFontListSequenceToken| to prevent race conditions. +// // Most callers will want to use the GetFontListAsync function in // content/browser/font_list_async.h which does an asynchronous call. scoped_ptr<base::ListValue> GetFontList_SlowBlocking(); |