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June 21, 2015 Exec function D from C++ | ||||
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Linux 32, dmd 2.067.0 I want to connect and execute function D from main() C++. ---- d1.d ---- import core.stdc.stdio; extern (C++) void d1() { printf("printf - exec d1()"); } ---- main_c1.cpp ---- #include <stdio.h> void d1(void); int main(void) { d1(); return 0; } ---- compile ---- dmd -c d1.d gcc main_c1.cpp d1.o libphobos2.a -lpthread -o main_c1 ./main_c1 ---> This option works correctly! If I try to cause the functions connected to GC in the D function, there is an error. ---- d1.d ---- import import std.stdio; extern (C++) void d1() { writeln("writeln - exec d1()"); } ---- compile ---- dmd -c d1.d gcc main_c1.cpp d1.o libphobos2.a -lpthread -o main_c1 ./main_c1 ---> Error: './main_c1' terminated by signal SIGSEGV (Address boundary error) Examples from dmd2/html/d/dll-linux.html don't work if instead of printf() to use writeln(). I think that a problem in initialization of Phobos. |
June 21, 2015 Re: Exec function D from C++ | ||||
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Posted in reply to MGW | On Sunday, 21 June 2015 at 13:12:03 UTC, MGW wrote: > Linux 32, dmd 2.067.0 > > I want to connect and execute function D from main() C++. > > ---- d1.d ---- > import core.stdc.stdio; > > extern (C++) void d1() { > printf("printf - exec d1()"); > } > > ---- main_c1.cpp ---- > #include <stdio.h> > > void d1(void); > > int main(void) { > d1(); > return 0; > } > > ---- compile ---- > dmd -c d1.d > gcc main_c1.cpp d1.o libphobos2.a -lpthread -o main_c1 > ./main_c1 ---> This option works correctly! > > > If I try to cause the functions connected to GC in the D function, there is an error. > ---- d1.d ---- > import import std.stdio; > > extern (C++) void d1() { > writeln("writeln - exec d1()"); > } > > ---- compile ---- > dmd -c d1.d > gcc main_c1.cpp d1.o libphobos2.a -lpthread -o main_c1 > ./main_c1 ---> Error: > './main_c1' terminated by signal SIGSEGV (Address boundary error) > > Examples from dmd2/html/d/dll-linux.html don't work if instead of printf() > to use writeln(). I think that a problem in initialization of Phobos. actually its that druntime hasn't been initialized just add: import core.runtime; import std.stdio; extern(C++) void d1() { writeln("writeln - exec d1()"); } extern(C++) void d_initialize() { Runtime.initialize(); } extern(C++) void d_terminate() { Runtime.terminate(); } and the C++ #include <stdio.h> void d1(void); void d_initialize(void); void d_terminate(void); int main(void) { d_initialize(); d1(); d_terminate(); return 0; } |
June 21, 2015 Re: Exec function D from C++ | ||||
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Posted in reply to Sean Campbell | On 21/06/15 16:09, Sean Campbell wrote: > extern(C++) void d_initialize() { > Runtime.initialize(); > } > extern(C++) void d_terminate() > { > Runtime.terminate(); > } These two functions are not necessary. There are already functions in druntime which are supposed to be called from C/C++: extern (C) bool rt_init(); extern (C) bool rt_term(); -- /Jacob Carlborg |
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