On Mon, Nov 25, 2019 at 11:28 AM <mark.reinh...@oracle.com> wrote: > > https://openjdk.java.net/jeps/370
One more question! Well, two I guess. First, in the interim before Panama or something like it comes to the main project, will it be possible to pass MemoryAddress kinds of things to JNI methods (to replace the current "pattern" of sticking pointer values into `long` fields)? Could the JNI API be extended for this purpose? Second, what about an API to allocate memory from the stack? This is really useful in GraalVM (granted they have a sort-of-Panama-ish way of calling C functions already, and they're really quite "loose" when it comes to safety in some regards) and could simplify some things already, particularly if the pointer could then be passed to a JNI method. Given the sensitive nature of stack allocation you'd probably have to add some extra checks (like checking that the thread matches on each access and that it is in scope, and you'd probably have to do the latter via callback like StackWalker does) but it would be pretty useful nonetheless. -- - DML
