Re: How to compile, link and use a C++ extension
От | Peter Geoghegan |
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Тема | Re: How to compile, link and use a C++ extension |
Дата | |
Msg-id | CAM3SWZTOQ+fKpGumWiPV4SiTR+6YL=yWzkwAUZAkbaSpLYELzg@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: How to compile, link and use a C++ extension (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: How to compile, link and use a C++ extension
Re: How to compile, link and use a C++ extension |
Список | pgsql-hackers |
On Fri, Aug 14, 2015 at 10:28 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote: > Yeah. The painful issues you're going to face are not that. They are > memory management (C++ "new" does not talk to palloc or vice versa) > and error handling ("throw" does not interoperate with PG_TRY()). It's worse than that. Any use of longjmp() will cause undefined behavior in C++. That's because each C++ object's destructor will not be called (possibly other reasons, too). I suggest looking at the PL/V8 code for an example of how to make C++ code work as a Postgres extension. IIRC they've made specific trade-offs that might be useful for Jacques' use case too. -- Peter Geoghegan
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