Sounds like a disaster. -Jason
> On May 17, 2019, at 12:51 PM, Bryan Call <bc...@apache.org> wrote: > > Having a plugin that would call into Java and then back into C sounds like a > really bad idea. > > -Bryan > > >> On May 17, 2019, at 8:59 AM, Walt Karas <wka...@verizonmedia.com.INVALID> >> wrote: >> >> http://jonisalonen.com/2012/calling-c-from-java-is-easy/ >> >> I don't know if there is a way to call Java from C or C++, which you would >> also need to have a Java plugin. If no one is currently doing anything >> like this we probably shouldn't worry about it. >> >>> On Fri, May 17, 2019 at 10:54 AM Leif Hedstrom <zw...@apache.org> wrote: >>> >>> >>> >>>> On May 17, 2019, at 9:48 AM, Walt Karas <wka...@verizonmedia.com.INVALID> >>> wrote: >>>> >>>> But are there people who write plugins in other languages (like Java for >>>> example) that can call C functions, but not C++ functions? If so, >>> wouldn't >>>> this break their plugins? >>> >>> >>> Never heard of that. How would someone do that ? You can write Java such >>> that the C-callbacks / continuations from ATS somehow gets called into the >>> appropriate Java API? dlopen() would need to find all these entry points in >>> the .so. >>> >>> — leif >>> >>>> >>>>> On Fri, May 17, 2019 at 8:41 AM Leif Hedstrom <zw...@apache.org> wrote: >>>>> >>>>> If we change this, such that all plugins must be compiled with C++ >>>>> compilers, we have the liberty of using C++’ism in the public >>> interfaces, >>>>> such as ts/ts.h and ts/remap.h. This has benefits, such as being able to >>>>> expose internal APIs of ATS without going through complex glue >>> interfaces >>>>> and opaque pointers. >>>>> >>>>> The disadvantage is that keeping ABI compatibility is a fair amount more >>>>> tricky. However, I don’t feel this is a significant issue, as long as we >>>>> don’t break it within minor / patch releases. It does make things >>> trickier >>>>> here too though, so we have to be open to the possibility of accidental >>>>> breakage of ABI compatibility. >>>>> >>>>> I think the advantages outweighs the disadvantages. The tasks for this >>> is >>>>> tracked on >>>>> >>>>> https://github.com/apache/trafficserver/issues/5360 >>>>> >>>>> >>>>> Cheers, >>>>> >>>>> — leif >>>>> >>>>> >>> >>> >
