tree ab822584feb1edb36ed2ffd84badad475e332858
parent 1a0a0068fc8c3997f73bea9d60f7365855291435
author Andrey Loskutov <loskutov@gmx.de> 1480433421 +0100
committer Thomas Watson <tjwatson@us.ibm.com> 1480444117 -0600

Bug 507092 - Eclipse fails to start: "An internal error occurred during:
"Initializing workspace."

Fixes multiple possible race conditions during initialization of
instance location uncovered by the change in ResourcesPlugin
initialization via commit 8d90fb030df310a974aae5d27d0bc2610c1a14ad. 

The original issue from bug 507092 is fixed in
Activator.getInstanceLocation(), see 507092 comment 27. The change in
MetaDataKeeper makes sure every thread uses same DataArea instance, and
the change in DataArea.assertLocationInitialized() makes sure the
critical file I/O operations on the metadata folder aren't executed in
parallel by multiple threads.

Change-Id: I4ce3ec522b9ef1be41143d52dc440668a958fbcd
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
Signed-off-by: Thomas Watson <tjwatson@us.ibm.com>