https://bugs.webkit.org/show_bug.cgi?id=35379

Patch by Jochen Eisinger <jochen@chromium.org> on 2010-02-25
Reviewed by Jeremy Orlow.

When a database is opened, right now you
don't have any context from where it is opened. The problem is that
the actual calls that open a database go through the sqlite3 vfs
layer, so there's no easy way to pass this function down to to
platform/sql/chromium/SQLFileSystemChromium*.cpp

This patch will allow you to get from anywhere within webkit a pointer
to the Thread object that actually created the thread you're currently
on (in case of the database, this can be either a thread forked of
from the main thread or from a worker thread), and query the object
for context information.

* wtf/Threading.h:
* wtf/ThreadingNone.cpp:
(WTF::threadContext):
* wtf/ThreadingPthreads.cpp:
(WTF::):
(WTF::identifierByPthreadHandle):
(WTF::establishIdentifierForPthreadHandle):
(WTF::pthreadHandleForIdentifier):
(WTF::contextForIdentifier):
(WTF::createThreadInternal):
(WTF::currentThread):
(WTF::threadContext):
* wtf/ThreadingWin.cpp:
(WTF::):
(WTF::threadMap):
(WTF::storeThreadHandleByIdentifier):
(WTF::threadHandleForIdentifier):
(WTF::contextForIdentifier):
(WTF::createThreadInternal):
(WTF::threadContext):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@55247 268f45cc-cd09-0410-ab3c-d52691b4dbfc