Commit fast-build patch to portage_tool repository.

pym/portage/dbapi/vartree.py

 # Copyright 1998-2011 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 __all__ = [
         "vardbapi", "vartree", "dblink"] + \
         ["write_contents", "tar_contents"]
 
 import portage
 portage.proxy.lazyimport.lazyimport(globals(),
         'portage.checksum:_perform_md5_merge@perform_md5',
@@ skipping 1277 matching lines @@
                 return self._get_protect_obj().isprotected(obj)
 
         def updateprotect(self):
                 self._get_protect_obj().updateprotect()
 
         def lockdb(self):
                 if self._lock_vdb:
                         raise AssertionError("Lock already held.")
                 # At least the parent needs to exist for the lock file.
                 ensure_dirs(self.dbroot)
-                if self._scheduler is None:
-                        self._lock_vdb = lockdir(self.dbroot)
-                else:
-                        async_lock = AsynchronousLock(path=self.dbroot,
-                                scheduler=self._scheduler)
-                        async_lock.start()
-                        async_lock.wait()
-                        self._lock_vdb = async_lock
+                if os.environ.get("PORTAGE_LOCKS") != "false":
+                        if self._scheduler is None:
+                                self._lock_vdb = lockdir(self.dbroot)
+                        else:
+                                async_lock = AsynchronousLock(path=self.dbroot,
+                                        scheduler=self._scheduler)
+                                async_lock.start()
+                                async_lock.wait()
+                                self._lock_vdb = async_lock
 
         def unlockdb(self):
                 if self._lock_vdb is not None:
                         if isinstance(self._lock_vdb, AsynchronousLock):
                                 self._lock_vdb.unlock()
                         else:
                                 unlockdir(self._lock_vdb)
                         self._lock_vdb = None
 
         def getpath(self):
@@ skipping 2843 matching lines @@
                                         encoding=object.__getattribute__(os, '_encoding'),
                                         errors='strict'), 'rb')
                                 try:
                                         tar.addfile(tarinfo, f)
                                 finally:
                                         f.close()
                 else:
                         tar.addfile(tarinfo)
                 if onProgress:
                         onProgress(maxval, curval)