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Avoid passing function pointers across process boundaries.

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We'd already recognized that we can't pass function pointers across process
boundaries for functions in loadable modules, since a shared library could
get loaded at different addresses in different processes.  But actually the
practice doesn't work for functions in the core backend either, if we're
using EXEC_BACKEND.  This is the cause of recent failures on buildfarm
member culicidae.  Switch to passing a string function name in all cases.

Something like this needs to be back-patched into 9.6, but let's see
if the buildfarm likes it first.

Petr Jelinek, with a bunch of basically-cosmetic adjustments by me

Discussion: https://postgr.es/m/548f9c1d-eafa-e3fa-9da8-f0cc2f654e60@2ndquadrant.com
This commit is contained in:
Tom Lane
2017-04-14 23:50:16 -04:00
parent 5a617ab3e6
commit 32470825d3
9 changed files with 187 additions and 149 deletions
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2
src/include/executor/execParallel.h
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@@ -38,4 +38,6 @@ extern void ExecParallelFinish(ParallelExecutorInfo *pei);
extern void ExecParallelCleanup(ParallelExecutorInfo *pei);
extern void ExecParallelReinitialize(ParallelExecutorInfo *pei);
extern void ParallelQueryMain(dsm_segment *seg, shm_toc *toc);
#endif /* EXECPARALLEL_H */