Package org.lwjgl.glfw

Class GLFWReallocateCallback

  • All Implemented Interfaces:
    java.lang.AutoCloseable, GLFWReallocateCallbackI, org.lwjgl.system.CallbackI, org.lwjgl.system.NativeResource, org.lwjgl.system.Pointer
    public abstract class GLFWReallocateCallback
extends org.lwjgl.system.Callback
implements GLFWReallocateCallbackI
    The function pointer type for memory reallocation callbacks.

    This is the function pointer type for memory reallocation callbacks. A memory reallocation callback function has the following signature:

    
 void* function_name(void* block, size_t size, void* user)

    This function must return a memory block at least size bytes long, or NULL if allocation failed. Note that not all parts of GLFW handle allocation failures gracefully yet.

    This function may be called during Init but before the library is flagged as initialized, as well as during Terminate after the library is no longer flagged as initialized.

    Any memory allocated by this function will be deallocated during library termination or earlier.

    The block address will never be NULL and the size will always be greater than zero. Reallocations of a block to size zero are converted into deallocations. Reallocations of NULL to a non-zero size are converted into regular allocations.

    Note
    • The returned memory block must be valid at least until it is deallocated.
    • This function should not call any GLFW function.
    • This function may be called from any thread that calls GLFW functions.

    Type

    
 void * (*GLFWReallocateCallbackI.invoke(long, long, long)) (
     void *block,
     size_t size,
     void *user
 )
    Since:
    version 3.4

    • Nested Class Summary

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

        org.lwjgl.system.Pointer.Default

    • Field Summary

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

        BITS32, BITS64, CLONG_SHIFT, CLONG_SIZE, POINTER_SHIFT, POINTER_SIZE

    • Method Detail

      • create

        public static GLFWReallocateCallback create​(long functionPointer)
        Creates a GLFWReallocateCallback instance from the specified function pointer.
        Returns:
        the new GLFWReallocateCallback

      • createSafe

        @Nullable
public static GLFWReallocateCallback createSafe​(long functionPointer)
        Like create, but returns null if functionPointer is NULL.