Class VkReallocationFunction
- java.lang.Object
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- org.lwjgl.system.Callback
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- org.lwjgl.vulkan.VkReallocationFunction
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- All Implemented Interfaces:
java.lang.AutoCloseable
,org.lwjgl.system.CallbackI
,org.lwjgl.system.CallbackI.P
,org.lwjgl.system.NativeResource
,org.lwjgl.system.Pointer
,VkReallocationFunctionI
public abstract class VkReallocationFunction extends org.lwjgl.system.Callback implements VkReallocationFunctionI
Application-defined memory reallocation function.C Specification
The type of
pfnReallocation
is:typedef void* (VKAPI_PTR *PFN_vkReallocationFunction)( void* pUserData, void* pOriginal, size_t size, size_t alignment, VkSystemAllocationScope allocationScope);
Description
pfnReallocation
must return an allocation with enough space forsize
bytes, and the contents of the original allocation from bytes zero tomin(original size, new size) - 1
must be preserved in the returned allocation. Ifsize
is larger than the old size, the contents of the additional space are undefined. If satisfying these requirements involves creating a new allocation, then the old allocation should be freed.If
pOriginal
isNULL
, thenpfnReallocation
must behave equivalently to a call toVkAllocationFunction
with the same parameter values (withoutpOriginal
).If
size
is zero, thenpfnReallocation
must behave equivalently to a call toVkFreeFunction
with the samepUserData
parameter value, andpMemory
equal topOriginal
.If
pOriginal
is non-NULL
, the implementation must ensure thatalignment
is equal to thealignment
used to originally allocatepOriginal
.If this function fails and
pOriginal
is non-NULL
the application must not free the old allocation.pfnReallocation
must follow the same rules for return values as tname:PFN_vkAllocationFunction.See Also
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Nested Class Summary
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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.N, org.lwjgl.system.CallbackI.P, org.lwjgl.system.CallbackI.S, org.lwjgl.system.CallbackI.V, org.lwjgl.system.CallbackI.Z
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Field Summary
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Fields inherited from interface org.lwjgl.system.Pointer
BITS32, BITS64, CLONG_SHIFT, CLONG_SIZE, POINTER_SHIFT, POINTER_SIZE
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Fields inherited from interface org.lwjgl.vulkan.VkReallocationFunctionI
SIGNATURE
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static VkReallocationFunction
create(long functionPointer)
Creates aVkReallocationFunction
instance from the specified function pointer.static VkReallocationFunction
create(VkReallocationFunctionI instance)
Creates aVkReallocationFunction
instance that delegates to the specifiedVkReallocationFunctionI
instance.static VkReallocationFunction
createSafe(long functionPointer)
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Methods inherited from class org.lwjgl.system.Callback
__stdcall, address, equals, free, free, get, getSafe, hashCode, toString
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Methods inherited from interface org.lwjgl.vulkan.VkReallocationFunctionI
callback, getSignature, invoke
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Method Detail
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create
public static VkReallocationFunction create(long functionPointer)
Creates aVkReallocationFunction
instance from the specified function pointer.- Returns:
- the new
VkReallocationFunction
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createSafe
@Nullable public static VkReallocationFunction createSafe(long functionPointer)
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create
public static VkReallocationFunction create(VkReallocationFunctionI instance)
Creates aVkReallocationFunction
instance that delegates to the specifiedVkReallocationFunctionI
instance.
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