Add example of how we can ask C++ nicely to give us a Python object i…#1
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…n exchange for a Ruby object
jmarrec
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May 11, 2021
Init_mylib doesn't work. it segfaults ``` * thread #1, name = 'Test', stop reason = signal SIGSEGV: invalid address (fault address: 0x38) frame #0: 0x00005555558bdd17 Test`rb_usascii_encoding at encoding.c:1342:45 1339 rb_encoding * 1340 rb_usascii_encoding(void) 1341 { -> 1342 return enc_table.list[ENCINDEX_US_ASCII].enc; 1343 } 1344 1345 int ``` So I'm trying to initialize all encodings etc, but I'm not getting anywhere. 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CMakeFiles/Test.dir/RubyEngine.cpp.o:(.bss+0x48): multiple definition of `swig::GC_VALUE::add_id' CMakeFiles/mylib_ruby.dir/ruby_wrapper/MeasureRUBY_wrap.cxx.o:(.bss+0x48): first defined here CMakeFiles/Test.dir/RubyEngine.cpp.o:(.bss+0x50): multiple definition of `swig::GC_VALUE::sub_id' CMakeFiles/mylib_ruby.dir/ruby_wrapper/MeasureRUBY_wrap.cxx.o:(.bss+0x50): first defined here CMakeFiles/Test.dir/RubyEngine.cpp.o:(.bss+0x58): multiple definition of `swig::GC_VALUE::mul_id' CMakeFiles/mylib_ruby.dir/ruby_wrapper/MeasureRUBY_wrap.cxx.o:(.bss+0x58): first defined here CMakeFiles/Test.dir/RubyEngine.cpp.o:(.bss+0x60): multiple definition of `swig::GC_VALUE::div_id' CMakeFiles/mylib_ruby.dir/ruby_wrapper/MeasureRUBY_wrap.cxx.o:(.bss+0x60): first defined here CMakeFiles/Test.dir/RubyEngine.cpp.o:(.bss+0x68): multiple definition of `swig::GC_VALUE::mod_id' CMakeFiles/mylib_ruby.dir/ruby_wrapper/MeasureRUBY_wrap.cxx.o:(.bss+0x68): first defined here CMakeFiles/Test.dir/RubyEngine.cpp.o:(.bss+0x70): multiple definition of `swig::GC_VALUE::and_id' CMakeFiles/mylib_ruby.dir/ruby_wrapper/MeasureRUBY_wrap.cxx.o:(.bss+0x70): first defined here CMakeFiles/Test.dir/RubyEngine.cpp.o:(.bss+0x78): multiple definition of `swig::GC_VALUE::or_id' CMakeFiles/mylib_ruby.dir/ruby_wrapper/MeasureRUBY_wrap.cxx.o:(.bss+0x78): first defined here CMakeFiles/Test.dir/RubyEngine.cpp.o:(.bss+0x80): multiple definition of `swig::GC_VALUE::xor_id' CMakeFiles/mylib_ruby.dir/ruby_wrapper/MeasureRUBY_wrap.cxx.o:(.bss+0x80): first defined here CMakeFiles/Test.dir/RubyEngine.cpp.o:(.bss+0x88): multiple definition of `swig::GC_VALUE::lshift_id' CMakeFiles/mylib_ruby.dir/ruby_wrapper/MeasureRUBY_wrap.cxx.o:(.bss+0x88): first defined here CMakeFiles/Test.dir/RubyEngine.cpp.o:(.bss+0x90): multiple definition of `swig::GC_VALUE::rshift_id' CMakeFiles/mylib_ruby.dir/ruby_wrapper/MeasureRUBY_wrap.cxx.o:(.bss+0x90): first defined here collect2: error: ld returned 1 exit status ninja: build stopped: subcommand failed.`
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…n exchange for a Ruby object
@jmarrec @kbenne @brianlball
here's basically what I had in mind. I tried to document it, there is no magic happening here. We just take a token (it's just a pointer cast to an int) and pass that between the Ruby/Python.
Kind of makes me think of trying to get a drug to pass through the blood-brain barrier.
Anywho, let me know what you think, or if you want another call.