Am Samstag, 17. Juni 2006 19:53 schrieb Gilles Chanteperdrix: > Niklaus Giger wrote: > > Hi > > > > Here the reworked patch. > > > > vxWorks supports empty messages. Only one at a time can be received. > > Could you explain a bit more "Only one at a time can be received" ? I do > not get it. You mean that one message get lost if posting two null > length messages while two receivers are blocked in a call to msgQReceive > ? I have two testcases for the 0 length messages. Look in my patch for "Test mailbox with 0 length messages". They are:
a) Post two messages, then call twice msgQReceive and each time I get one message back. Each time verified using msgQNumMsgs. b) Post two messages, then try to receive two messages at once by giving 2 (bytes) to msgQReceive see line: rc = msgQReceive(qid,(char *)&msg,2,NO_WAIT);) In this case I only get one message back, as msgQNumMsgs reports 1. This explains the lines: rc = msgQNumMsgs(qid); TEST_ASSERT(rc == 1); Best regards -- Niklaus Giger _______________________________________________ Xenomai-core mailing list [email protected] https://mail.gna.org/listinfo/xenomai-core
