tree 77090b496f56a7c79e25268c4239e6ba31112dff
parent 9b987f8c98763ee569bde90b5268b43474ca106c
author Steve Nairn <steven.nairn@kewill.com> 1425382806 +0800
committer Daniel Veillard <veillard@redhat.com> 1425382921 +0800

Fix the fix to Windows locking

For https://bugzilla.gnome.org/show_bug.cgi?id=737851

Unfortunately this change has introduced a problem which results in
occasional hangs on Windows when running multi-threaded on a multi-core
host.

When locking the xmlRMutex the count field is increment inside the
critical section but when unlocking the count field is decremented
outside the critical section. The increment/decrement is not atomic so
this can result in the count field being updated incorrectly.

The solution is to change xmlRMutexUnlock to decrement the count field
before leaving the critical section rather than after.