Hi Brett, On Tue, Nov 18, 2008 at 11:12 AM, Brett Wilson <[EMAIL PROTECTED]> wrote:
> > On Tue, Nov 18, 2008 at 7:14 AM, Marshall Greenblatt > <[EMAIL PROTECTED]> wrote: > > Hi Brett, > > > > On Tue, Nov 18, 2008 at 9:56 AM, Brett Wilson <[EMAIL PROTECTED]> > wrote: > >> > >> On Tue, Nov 18, 2008 at 6:50 AM, Marshall Greenblatt > >> <[EMAIL PROTECTED]> wrote: > >> > Hi All, > >> > > >> > Is it safe to create (via Browser::Create*()) and/or access Browser > >> > object > >> > instances from multiple threads? In other words, I need to choose one > >> > of > >> > the following options: > >> > >> No, the entire UI of Chrome is single-threaded and is not threadsafe. > >> If you need things to access it from multiple threads, you will need > >> to synchronize everything. > > > > Is there a thread-safe method equivalent to the PostMessage() WinAPI call > > for adding events to the browser MessageLoop? > > PostMessage should already be thread safe. Thanks for your input, I think I understand now. Both the Windows message loop and the chrome task queue co-exist in the MessageLoop class via Delegate and Dispatcher implementations. Chrome uses the Windows message loop as a means for managing the task queue (via WM_TIMER calls), so there should be no need for me to post Windows messages directly to the UI thread. Instead, to call a Browser object method (like GoBack()) from a separate thread I should execute MessageLoopForUI::current()->PostTask() (which is itself thread-safe) to have the UI thread execute a method that I provide, which would in turn make the Browser method call. I also found this document helpful in understanding the message system: http://dev.chromium.org/developers/design-documents/threading > > > Brett Thanks, Marshall > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Chromium-dev" group. To post to this group, send email to chromium-dev@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/chromium-dev?hl=en -~----------~----~----~----~------~----~------~--~---
