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Add ReallocatePool(), ReallocateRuntimePool(), and ReallocateReservedPool() to BaseMemoryLib 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6679 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
mdkinney 2008-11-22 00:54:04 +00:00
parent c46484952a
commit c23904319f
2 changed files with 239 additions and 0 deletions
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90
MdePkg/Include/Library/MemoryAllocationLib.h
View File

@ -378,6 +378,96 @@ AllocateReservedCopyPool (
IN CONST VOID *Buffer
);
/**
Reallocates a buffer of type EfiBootServicesData.
Allocates and zeros the number bytes specified by NewSize with the memmory type
EfiBootServicesData. If OldBuffer is not NULL, then the smaller of OldSize and
NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
OldBuffer is freed. A pointer to the newly allocated buffer is returned.
If NewSize is 0, then a valid buffer of 0 size is returned. If there is not
enough memory remaining to satisfy the request, then NULL is returned.
If OldBuffer is NULL, then ASSERT().
If NewSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
If OldSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@param OldSize The size, in bytes, of OldBuffer.
@param NewSize The size, in bytes, of the buffer to reallocate.
@param OldBuffer The buffer to copy to the allocated buffer. This is an optional
parameter that may be NULL.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
EFIAPI
ReallocatePool (
IN UINTN OldSize,
IN UINTN NewSize,
IN VOID *OldBuffer OPTIONAL
);
/**
Reallocates a buffer of type EfiRuntimeServicesData.
Allocates and zeros the number bytes specified by NewSize with the memmory type
EfiRuntimeServicesData. If OldBuffer is not NULL, then the smaller of OldSize and
NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
OldBuffer is freed. A pointer to the newly allocated buffer is returned.
If NewSize is 0, then a valid buffer of 0 size is returned. If there is not
enough memory remaining to satisfy the request, then NULL is returned.
If OldBuffer is NULL, then ASSERT().
If NewSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
If OldSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@param OldSize The size, in bytes, of OldBuffer.
@param NewSize The size, in bytes, of the buffer to reallocate.
@param OldBuffer The buffer to copy to the allocated buffer. This is an optional
parameter that may be NULL.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
EFIAPI
ReallocateRuntimePool (
IN UINTN OldSize,
IN UINTN NewSize,
IN VOID *OldBuffer OPTIONAL
);
/**
Reallocates a buffer of type EfiReservedMemoryType.
Allocates and zeros the number bytes specified by NewSize with the memmory type
EfiReservedMemoryType. If OldBuffer is not NULL, then the smaller of OldSize and
NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
OldBuffer is freed. A pointer to the newly allocated buffer is returned.
If NewSize is 0, then a valid buffer of 0 size is returned. If there is not
enough memory remaining to satisfy the request, then NULL is returned.
If OldBuffer is NULL, then ASSERT().
If NewSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
If OldSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@param OldSize The size, in bytes, of OldBuffer.
@param NewSize The size, in bytes, of the buffer to reallocate.
@param OldBuffer The buffer to copy to the allocated buffer. This is an optional
parameter that may be NULL.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
EFIAPI
ReallocateReservedPool (
IN UINTN OldSize,
IN UINTN NewSize,
IN VOID *OldBuffer OPTIONAL
);
/**
Frees a buffer that was previously allocated with one of the pool allocation functions in the
Memory Allocation Library.

149
MdePkg/Library/UefiMemoryAllocationLib/MemoryAllocationLib.c
View File

@ -128,6 +128,7 @@ AllocateReservedPages (
Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer
must have been allocated on a previous call to the page allocation services of the Memory
Allocation Library.
If Buffer was not allocated with a page allocation function in the Memory Allocation Library,
then ASSERT().
If Pages is zero, then ASSERT().
@ -242,6 +243,7 @@ InternalAllocateAlignedPages (
alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is
returned. If there is not enough memory at the specified alignment remaining to satisfy the
request, then NULL is returned.
If Alignment is not a power of two and Alignment is not zero, then ASSERT().
@param Pages The number of 4 KB pages to allocate.
@ -268,6 +270,7 @@ AllocateAlignedPages (
alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is
returned. If there is not enough memory at the specified alignment remaining to satisfy the
request, then NULL is returned.
If Alignment is not a power of two and Alignment is not zero, then ASSERT().
@param Pages The number of 4 KB pages to allocate.
@ -294,6 +297,7 @@ AllocateAlignedRuntimePages (
alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is
returned. If there is not enough memory at the specified alignment remaining to satisfy the
request, then NULL is returned.
If Alignment is not a power of two and Alignment is not zero, then ASSERT().
@param Pages The number of 4 KB pages to allocate.
@ -320,6 +324,7 @@ AllocateAlignedReservedPages (
Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer
must have been allocated on a previous call to the aligned page allocation services of the Memory
Allocation Library.
If Buffer was not allocated with an aligned page allocation function in the Memory Allocation
Library, then ASSERT().
If Pages is zero, then ASSERT().
@ -598,6 +603,7 @@ AllocateCopyPool (
AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the
allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there
is not enough memory remaining to satisfy the request, then NULL is returned.
If Buffer is NULL, then ASSERT().
If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@ -624,6 +630,7 @@ AllocateRuntimeCopyPool (
AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the
allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there
is not enough memory remaining to satisfy the request, then NULL is returned.
If Buffer is NULL, then ASSERT().
If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@ -643,12 +650,154 @@ AllocateReservedCopyPool (
return InternalAllocateCopyPool (EfiReservedMemoryType, AllocationSize, Buffer);
}
/**
Reallocates a buffer of a specified memory type.
Allocates and zeros the number bytes specified by NewSize with the memmory type
specified by PoolType. If OldBuffer is not NULL, then the smaller of OldSize and
NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
OldBuffer is freed. A pointer to the newly allocated buffer is returned.
If NewSize is 0, then a valid buffer of 0 size is returned. If there is not
enough memory remaining to satisfy the request, then NULL is returned.
If OldBuffer is NULL, then ASSERT().
If NewSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
If OldSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@param PoolType The type of pool to allocate.
@param OldSize The size, in bytes, of OldBuffer.
@param NewSize The size, in bytes, of the buffer to reallocate.
@param OldBuffer The buffer to copy to the allocated buffer. This is an optional
parameter that may be NULL.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
EFIAPI
InternalReallocatePool (
IN EFI_MEMORY_TYPE PoolType,
IN UINTN OldSize,
IN UINTN NewSize,
IN VOID *OldBuffer OPTIONAL
)
{
VOID *NewBuffer;
NewBuffer = AllocateZeroPool (NewSize);
if (NewBuffer != NULL && OldBuffer != NULL) {
CopyMem (NewBuffer, OldBuffer, MIN (OldSize, NewSize));
FreePool (OldBuffer);
}
return NewBuffer;
}
/**
Reallocates a buffer of type EfiBootServicesData.
Allocates and zeros the number bytes specified by NewSize with the memmory type
EfiBootServicesData. If OldBuffer is not NULL, then the smaller of OldSize and
NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
OldBuffer is freed. A pointer to the newly allocated buffer is returned.
If NewSize is 0, then a valid buffer of 0 size is returned. If there is not
enough memory remaining to satisfy the request, then NULL is returned.
If OldBuffer is NULL, then ASSERT().
If NewSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
If OldSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@param OldSize The size, in bytes, of OldBuffer.
@param NewSize The size, in bytes, of the buffer to reallocate.
@param OldBuffer The buffer to copy to the allocated buffer. This is an optional
parameter that may be NULL.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
EFIAPI
ReallocatePool (
IN UINTN OldSize,
IN UINTN NewSize,
IN VOID *OldBuffer OPTIONAL
)
{
return InternalReallocatePool (EfiBootServicesData, OldSize, NewSize, OldBuffer);
}
/**
Reallocates a buffer of type EfiRuntimeServicesData.
Allocates and zeros the number bytes specified by NewSize with the memmory type
EfiRuntimeServicesData. If OldBuffer is not NULL, then the smaller of OldSize and
NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
OldBuffer is freed. A pointer to the newly allocated buffer is returned.
If NewSize is 0, then a valid buffer of 0 size is returned. If there is not
enough memory remaining to satisfy the request, then NULL is returned.
If OldBuffer is NULL, then ASSERT().
If NewSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
If OldSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@param OldSize The size, in bytes, of OldBuffer.
@param NewSize The size, in bytes, of the buffer to reallocate.
@param OldBuffer The buffer to copy to the allocated buffer. This is an optional
parameter that may be NULL.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
EFIAPI
ReallocateRuntimePool (
IN UINTN OldSize,
IN UINTN NewSize,
IN VOID *OldBuffer OPTIONAL
)
{
return InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);
}
/**
Reallocates a buffer of type EfiReservedMemoryType.
Allocates and zeros the number bytes specified by NewSize with the memmory type
EfiReservedMemoryType. If OldBuffer is not NULL, then the smaller of OldSize and
NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
OldBuffer is freed. A pointer to the newly allocated buffer is returned.
If NewSize is 0, then a valid buffer of 0 size is returned. If there is not
enough memory remaining to satisfy the request, then NULL is returned.
If OldBuffer is NULL, then ASSERT().
If NewSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
If OldSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@param OldSize The size, in bytes, of OldBuffer.
@param NewSize The size, in bytes, of the buffer to reallocate.
@param OldBuffer The buffer to copy to the allocated buffer. This is an optional
parameter that may be NULL.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
EFIAPI
ReallocateReservedPool (
IN UINTN OldSize,
IN UINTN NewSize,
IN VOID *OldBuffer OPTIONAL
)
{
return InternalReallocatePool (EfiReservedMemoryType, OldSize, NewSize, OldBuffer);
}
/**
Frees a buffer that was previously allocated with one of the pool allocation functions in the
Memory Allocation Library.
Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the
pool allocation services of the Memory Allocation Library.
If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,
then ASSERT().