From: eregontp@... Date: 2020-12-01T17:46:51+00:00 Subject: [ruby-core:101186] [Ruby master Feature#17356] Alignment of memory allocated through Fiddle struct's malloc Issue #17356 has been updated by Eregon (Benoit Daloze). IMHO, this feature is something that Fiddle or FFI should handle. They can call malloc/posix_memalign/etc themselves of course. I don't see a need to change anything so fundamental in the GC. Fiddle/FFI can use finalizers if automatically freeing the memory is desired. ---------------------------------------- Feature #17356: Alignment of memory allocated through Fiddle struct's malloc https://bugs.ruby-lang.org/issues/17356#change-88867 * Author: AndreaRibuoli (Andrea Ribuoli) * Status: Open * Priority: Normal ---------------------------------------- I am testing a low-level patch for **Ruby 3** that inside *gc.c* replaces: `TRY_WITH_GC(size, mem = malloc(size));` with: `TRY_WITH_GC(size, mem = aligned_alloc(16,size));` This should allow me to control that Fiddle returns pointers quad-words aligned. Is it possible to introduce a configure parameter to control this kind of setting? Refer to [issue opened on Fiddle](https://github.com/ruby/fiddle/issues/53). Kind regards, Andrea Ribuoli -- https://bugs.ruby-lang.org/ Unsubscribe: