GLFWDeallocateCallbackI (LWJGL 3.3.1 - GLFW)

All Superinterfaces:

org.lwjgl.system.CallbackI, org.lwjgl.system.Pointer

All Known Implementing Classes:

GLFWDeallocateCallback

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 GLFWDeallocateCallbackI
extends org.lwjgl.system.CallbackI
```
The function pointer type for memory deallocation callbacks.
This is the function pointer type for memory deallocation callbacks. A memory deallocation callback function has the following signature:
```
 void function_name(void* block, void* user)
```
This function may deallocate the specified memory block. This memory block will have been allocated with the same allocator.

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.

The block address will never be NULL. Deallocations of NULL are filtered out before reaching the custom allocator.
Note
- The specified memory block will not be accessed by GLFW after this function is called.
- This function should not call any GLFW function.
- This function may be called from any thread that calls GLFW functions.
Type
```
 void (*invoke(long, long)) (
     void *block,
     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
Modifier and Type Field Description

static org.lwjgl.system.libffi.FFICIF CIF
- 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 void`	`callback(long ret, long args)`
`default org.lwjgl.system.libffi.FFICIF`	`getCallInterface()`
`void`	`invoke(long block, long user)`	Will be called for memory deallocation requests.

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

- Field Detail
  - CIF
```
static final org.lwjgl.system.libffi.FFICIF CIF
```
- Method Detail
  - getCallInterface
```
default org.lwjgl.system.libffi.FFICIF getCallInterface()
```
    Specified by:
    
    getCallInterface in interface org.lwjgl.system.CallbackI
  - callback
```
default void callback(long ret,
                      long args)
```
    Specified by:
    
    callback in interface org.lwjgl.system.CallbackI
  - invoke
```
void invoke(long block,
            long user)
```
    Will be called for memory deallocation requests.
    
    Parameters:
    
    block - the address of the memory block to deallocate
    
    user - the user-defined pointer from the allocator