Package org.lwjgl.system.jemalloc

Interface ExtentAllocI

  • All Superinterfaces:
    org.lwjgl.system.CallbackI, org.lwjgl.system.CallbackI.P, org.lwjgl.system.Pointer
    All Known Implementing Classes:
    ExtentAlloc
    Functional Interface:
    This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
    @FunctionalInterface
public interface ExtentAllocI
extends org.lwjgl.system.CallbackI.P
    Instances of this interface may be set to the ExtentHooks struct.

    Type

    
 void * (*) (
     extent_hooks_t *extent_hooks,
     void *new_addr,
     size_t size,
     size_t alignment,
     bool *zero,
     bool *commit,
     unsigned int arena_ind
 )

    • Nested Class Summary

      • Nested classes/interfaces inherited from interface org.lwjgl.system.CallbackI

        org.lwjgl.system.CallbackI.B, org.lwjgl.system.CallbackI.D, org.lwjgl.system.CallbackI.F, org.lwjgl.system.CallbackI.I, org.lwjgl.system.CallbackI.J, org.lwjgl.system.CallbackI.P, org.lwjgl.system.CallbackI.S, org.lwjgl.system.CallbackI.V, org.lwjgl.system.CallbackI.Z

      • Nested classes/interfaces inherited from interface org.lwjgl.system.Pointer

        org.lwjgl.system.Pointer.Default

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.String SIGNATURE  

      • Fields inherited from interface org.lwjgl.system.Pointer

        BITS32, BITS64, CLONG_SHIFT, CLONG_SIZE, POINTER_SHIFT, POINTER_SIZE

    • Method Summary

      All Methods Instance Methods Abstract Methods Default Methods 
      Modifier and Type Method Description
      default long callback​(long args)  
      default java.lang.String getSignature()  
      long invoke​(long extent_hooks, long new_addr, long size, long alignment, long zero, long commit, int arena_ind)
      Extent allocation hook.

      • Methods inherited from interface org.lwjgl.system.CallbackI

        address

    • Method Detail

      • getSignature

        default java.lang.String getSignature()
        Specified by:
        getSignature in interface org.lwjgl.system.CallbackI

      • callback

        default long callback​(long args)
        Specified by:
        callback in interface org.lwjgl.system.CallbackI.P

      • invoke

        long invoke​(long extent_hooks,
            long new_addr,
            long size,
            long alignment,
            long zero,
            long commit,
            int arena_ind)
        Extent allocation hook.

        An extent allocation function conforms to the extent_alloc_t type and upon success returns a pointer to size bytes of mapped memory on behalf of arena arena_ind such that the extent's base address is a multiple of alignment, as well as setting *zero to indicate whether the extent is zeroed and *commit to indicate whether the extent is committed. Upon error the function returns NULL and leaves *zero and *commit unmodified. The size parameter is always a multiple of the page size. The alignment parameter is always a power of two at least as large as the page size. Zeroing is mandatory if *zero is true upon function entry. Committing is mandatory if *commit is true upon function entry. If new_addr is not NULL, the returned pointer must be new_addr on success or NULL on error. Committed memory may be committed in absolute terms as on a system that does not overcommit, or in implicit terms as on a system that overcommits and satisfies physical memory needs on demand via soft page faults. Note that replacing the default extent allocation function makes the arena's arena.i.dss setting irrelevant.