Interface ExtentCommitI

  • All Superinterfaces:
    CallbackI, CallbackI.Z, Pointer
    All Known Implementing Classes:
    ExtentCommit
    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 ExtentCommitI
    extends CallbackI.Z
    Instances of this interface may be set to the ExtentHooks struct.

    Type

    
     bool (*) (
         extent_hooks_t *extent_hooks,
         void *addr,
         size_t size,
         size_t offset,
         size_t length,
         unsigned int arena_ind
     )
    • Method Detail

      • getSignature

        default java.lang.String getSignature()
        Description copied from interface: CallbackI
        Returns the dyncall signature for this callback function. [INTERNAL API]
        Specified by:
        getSignature in interface CallbackI
        Returns:
        the dyncall signature
      • callback

        default boolean callback​(long args)
        Description copied from interface: CallbackI.Z
        Will be called by native code.
        Specified by:
        callback in interface CallbackI.Z
        Parameters:
        args - pointer to a DCArgs iterator
        Returns:
        the value to store to the result DCValue
      • invoke

        boolean invoke​(long extent_hooks,
                       long addr,
                       long size,
                       long offset,
                       long length,
                       int arena_ind)
        Extent commit hook.

        An extent commit function conforms to the extent_commit_t type and commits zeroed physical memory to back pages within an extent at given addr and size at offset bytes, extending for length on behalf of arena arena_ind, returning false upon success. 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. If the function returns true, this indicates insufficient physical memory to satisfy the request.