== Quote from Jacob Carlborg (d...@me.com)'s article > On 2011-01-06 20:20, Iain Buclaw wrote: > > == Quote from scorn (sc...@d.net)'s article > >> Am 05.01.2011 21:24, schrieb Iain Buclaw: > >>> == Quote from Scorn (sc...@scorn.net)'s article > >>>> I too wonder how much work it would be to support OpenMP in gdc. From > >>>> http://www.drdobbs.com/high-performance-computing/226300277 it seems to > >>>> be > > that > >>>> there is also quite a lot of magic on the compiler side (but which could > >>> already > >>>> be in the gcc parts). Maybe a concurrent garbage collector would also be > > needed > >>>> (Leandro Lucarella worked on this for his diploma thesis). > >>>> I hope someone can help to clear this up. If not OpenMP then at least a > > better > >>>> support for multicore programming in one way or another will be really > >>> important > >>>> for the future of D. > >>> > >>> Would take just a little bit of work, yes. ;) > >>> > >>> Most of the heavy duty work for GCC OMP support is done by their own C > >>> parser/internal codegen functions. So to start, will need to rewrite half of > > what > >>> is there for the DMDFE AST. > >> That really sounds tempting. Maybe we should bring this up on the main D > >> mailing list (whatever this is (d.learn ?)) for discussion. While this > >> might at first be a gdc only solution, having a general, developer > >> approved official D syntax for all three compilers (dmd, gdc, ldc) would > >> be great. > > > > Official syntax? Question... why? We already have pragma to perform > > compiler- > > independent tasks. ie: > > > > LDC: > > pragma(intrinsic, "llvm.frameaddress") > > void* llvm_frameaddress(uint level); > > > > GDC: > > pragma(attribute, optimize("-freg-struct-return")) > > foo getFoo(); > > > > DMD: > > pragma(startaddress, foo); > > > > > > A typical hello world application would likely look like this: > > > > void main () > > { > > int th_id, nthreads; > > pragma(omp, parallel private(th_id)) > > { > > th_id = omp_get_thread_num(); > > writefln("Hello World from thread %d\n", th_id); > > pragma(omp, barrier) > > if ( th_id == 0 ) { > > nthreads = omp_get_num_threads(); > > writefln("There are %d threads\n",nthreads); > > } > > } > > } > > > > > > Regards > Wouldn't that need to be wrapped in a version statement, unrecognized > pragmas will result in an error.
To be extremely pedantic... yes.
