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ASF subversion and git services commented on DISPATCH-2178: ----------------------------------------------------------- Commit 2bff67975707ed2bab36bb31c38aa542290a035b in qpid-dispatch's branch refs/heads/dependabot/npm_and_yarn/console/react/testing-library/react-12.0.0 from Jiri Daněk [ https://gitbox.apache.org/repos/asf?p=qpid-dispatch.git;h=2bff679 ] DISPATCH-2178: Do not build separate libqpid-dispatch.so (#1267) > Do not build separate libqpid-dispatch.so > ----------------------------------------- > > Key: DISPATCH-2178 > URL: https://issues.apache.org/jira/browse/DISPATCH-2178 > Project: Qpid Dispatch > Issue Type: Improvement > Affects Versions: 1.16.0 > Reporter: Jiri Daněk > Assignee: Jiri Daněk > Priority: Major > Fix For: 1.17.0 > > > h3. Motivation > The split into a binary and a library is not unprecedented (e.g. CPython does > exactly the same thing), but in Dispatch it is avoidable with minimal code > changes (an executable can {{dlopen(NULL, ...)}} itself. > Getting rid of libqpid-dispatch.so will mean one less file that we need to > install (and since it is not a published API, finding a good place for the so > has been tricky in the past (see DISPATCH-194). > Furthermore, avoiding the indirection of a library call will likely give some > performance benefit at a low level (individual function calls) similar to > (again) Python in https://fedoraproject.org/wiki/Changes/PythonStaticSpeedup. > The gains can be best utilized after doing LTO (see DISPATCH-2121). > h3. Expected issues > The problem with this is that we lose semantic interposition > (https://fedoraproject.org/wiki/Changes/PythonNoSemanticInterpositionSpeedup), > meaning we won't be able to simply override symbols from libqpid-dispatch.so > at runtime. This is an issue because Dispatch unittests depend on this. (See > DISPATCH-1783) -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@qpid.apache.org For additional commands, e-mail: dev-h...@qpid.apache.org