Bug #230469 - Implement non-blocking distlocks for --fetchonly. This adds

a "flags" keyword parameter to the portage.locks.lock() function. Default
is flags=0. If flags contains os.O_NONBLOCK then lock() will raise
portage.exception.TryAgain instead of blocking. This new flags parameter
is used to implement non-blocking distlocks in fetch() when fetchonly
mode is enabled.

svn path=/main/trunk/; revision=10917

1 files changed, 4 insertions, 0 deletions

diff --git a/pym/portage/exception.py b/pym/portage/exception.py
index d91584b73..66cd16244 100644
--- a/pym/portage/exception.py
+++ b/pym/portage/exception.py
@@ -57,6 +57,10 @@ class PermissionDenied(PortageException):
 	from errno import EACCES as errno
 	"""Permission denied"""
 
+class TryAgain(PortageException):
+	from errno import EAGAIN as errno
+	"""Try again"""
+
 class ReadOnlyFileSystem(PortageException):
 	"""Read-only file system"""