bitbake: prserv/serv: Ensure sync happens in the correct thread

The sync/commit calls are happening in the submission thread which can
race against the handler. The handler may start new transactions which
then causes the submission thread to error with "cannot start a
transaction within a transaction".

The fix is to move the calls to the correct thread.

(Bitbake rev: 92e128a0e331e563cfe48827e95939041c16c88e)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie
2014-11-04 14:02:32 +00:00
parent 51f6cb03b0
commit 2380ebecd1

View File

@@ -76,11 +76,19 @@ class PRServer(SimpleXMLRPCServer):
In addition, exception handling is done here.
"""
iter_count = 1
# With 60 iterations between syncs and a 0.5 second timeout between
# iterations, this will sync if dirty every ~30 seconds.
iterations_between_sync = 60
while True:
(request, client_address) = self.requestqueue.get()
try:
self.finish_request(request, client_address)
self.shutdown_request(request)
iter_count = (iter_count + 1) % iterations_between_sync
if iter_count == 0:
self.table.sync_if_dirty()
except:
self.handle_error(request, client_address)
self.shutdown_request(request)
@@ -122,10 +130,6 @@ class PRServer(SimpleXMLRPCServer):
def work_forever(self,):
self.quit = False
self.timeout = 0.5
iter_count = 1
# With 60 iterations between syncs and a 0.5 second timeout between
# iterations, this will sync if dirty every ~30 seconds.
iterations_between_sync = 60
logger.info("Started PRServer with DBfile: %s, IP: %s, PORT: %s, PID: %s" %
(self.dbfile, self.host, self.port, str(os.getpid())))
@@ -133,9 +137,6 @@ class PRServer(SimpleXMLRPCServer):
self.handlerthread.start()
while not self.quit:
self.handle_request()
iter_count = (iter_count + 1) % iterations_between_sync
if iter_count == 0:
self.table.sync_if_dirty()
self.table.sync()
logger.info("PRServer: stopping...")