[jira] [Created] (PROTON-2377) [cpp] tag_counter is not used in a thread safe way in sender.cpp

["Rakhi Kumari (Jira)" <ji...@apache.org>]

Rakhi Kumari created PROTON-2377:
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             Summary: [cpp] tag_counter is not used in a thread safe way in sender.cpp
                 Key: PROTON-2377
                 URL: https://issues.apache.org/jira/browse/PROTON-2377
             Project: Qpid Proton
          Issue Type: Bug
          Components: cpp-binding
            Reporter: Rakhi Kumari


uint64_t tag_counter = 0 is a global variable, so it might end up giving duplicate ids to different threads.
We need to ensure that a single sender will not send a message with a duplicate tag. Thread safety is required to guarantee unique tags. 

Link to the discussion regarding this issue :
https://github.com/apache/qpid-proton/pull/309#discussion_r615219442





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