New submission from Srikantha Kadur :
Here is my code.
Func1():
.
.
CliSock, addr = ServSocket.accept()
print 'DataPortServ:Connected by', addr
data.DataSendSock = CliSock
for cnt in range(data.ThreadCnt):
SessionId = startSessionId + SessionIdCnt* cnt
thread.start_new_thread(ThreadHandleDataPort,(("Thead"+str(cnt)),data,EventCnt[cnt],EventCnt[cnt+1],UECntPerThread,ip,SessionId))
time.sleep(0.005)
ThreadHandleDataPort(args):
#here i use socket.sendall
while True:
if ( 3 != data.bRunFlag):
if (len(data.AddedEvents) != 0) | (len(data.AddedReasons) != 0):
#time.sleep(5)
for EventCnt in range(StartEvent,StopEvent):
.
.
.
data.DataSendSock.sendall(SendEvent)
.
.
My application is a server and it accepts connection from the client on a port
and start sending some messages to the client. While sending messages i use
multiple threads for the same socket based on required traffic.
I do not modify any global variables but i read only global variables.But at
high Loads my messages are being corrupted, here is the snippet of the
corruption
actual message should have been
ABS1,1328577019.57,181138955,
instead im getting
ABS1,1329218634.91,181ABS1
so here is my Q:
Do i need to lock the socket before sending inside the threads or Python
modules will take care of it? Please suggest.
--
components: 2to3 (2.x to 3.x conversion tool)
messages: 153361
nosy: srikadur
priority: normal
severity: normal
status: open
title: Usage of socket.sendall() in multiple threads
type: behavior
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Python tracker
<http://bugs.python.org/issue14016>
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