4 ms·

java.lang.foreign.Arena

• riku_iki 10mo ago
  My understanding is that that arena allows you to allocate memory segments, but you can't do much with it, you can't allocate var or object on it like in C++ for example, so its almost useless.
  • pjmlp 10mo ago
    You certainly can, as they were designed as JNI replacement, with the goal to fully support the C ABI of the host platform. You can either do the whole boilerplate manually with Panama set of APIs, or write a C header file and let jextract do the work of boilerplate generation.
    • riku_iki 10mo ago
      > You certainly can I am wondering if there is working code example, or this is just speculation?
  • kernal 10mo ago
    https://docs.oracle.com/en/java/javase/21/core/memory-segments-and-arenas.html#GUID-01CE34E8-7BCB-4540-92C4-E127C1F62711 https://docs.oracle.com/en/java/javase/21/core/memory-segmen...
    • riku_iki 10mo ago
      That Arena is not integrated into language. You can't do something like: var myObj = new(my_arena) MyClass();