Package org.lwjgl.glfw
Class GLFWAllocateCallback
java.lang.Object
org.lwjgl.system.Callback
org.lwjgl.glfw.GLFWAllocateCallback
- All Implemented Interfaces:
AutoCloseable
,GLFWAllocateCallbackI
,org.lwjgl.system.CallbackI
,org.lwjgl.system.NativeResource
,org.lwjgl.system.Pointer
public abstract class GLFWAllocateCallback
extends org.lwjgl.system.Callback
implements GLFWAllocateCallbackI
The function pointer type for memory allocation callbacks.
This is the function pointer type for memory allocation callbacks. A memory allocation callback function has the following signature:
void* function_name(size_t size, void* user)
This function must return either 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 size will always be greater than zero. Allocations of size zero are filtered out before reaching the custom allocator.
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 * (*GLFWAllocateCallbackI.invoke(long, long)
) (
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
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Field Summary
Fields inherited from interface org.lwjgl.glfw.GLFWAllocateCallbackI
CIF
Fields inherited from interface org.lwjgl.system.Pointer
BITS32, BITS64, CLONG_SHIFT, CLONG_SIZE, POINTER_SHIFT, POINTER_SIZE
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Method Summary
Modifier and TypeMethodDescriptionstatic GLFWAllocateCallback
create
(long functionPointer) Creates aGLFWAllocateCallback
instance from the specified function pointer.static GLFWAllocateCallback
create
(GLFWAllocateCallbackI instance) Creates aGLFWAllocateCallback
instance that delegates to the specifiedGLFWAllocateCallbackI
instance.static GLFWAllocateCallback
createSafe
(long functionPointer) Methods inherited from class org.lwjgl.system.Callback
address, equals, free, free, get, getSafe, hashCode, toString
Methods inherited from interface org.lwjgl.system.CallbackI
address
Methods inherited from interface org.lwjgl.glfw.GLFWAllocateCallbackI
callback, getCallInterface, invoke
Methods inherited from interface org.lwjgl.system.NativeResource
close
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Method Details
-
create
Creates aGLFWAllocateCallback
instance from the specified function pointer.- Returns:
- the new
GLFWAllocateCallback
-
createSafe
-
create
Creates aGLFWAllocateCallback
instance that delegates to the specifiedGLFWAllocateCallbackI
instance.
-