This documentation is archived and is not being maintained.

ICorProfilerInfo::GetObjectSize Method

Updated: September 2011

Gets the size of a specified object.

HRESULT GetObjectSize(
    [in]  ObjectID objectId,
    [out] ULONG  *pcSize);


[in] The ID of the object.


[out] A pointer to the object's size, in bytes.

Different objects of the same types often have the same size. However, some types, such as arrays or strings, may have a different size for each object.

The size returned by the GetObjectSize method does not include any alignment padding that may appear after the object is on the garbage collection heap. If you use the GetObjectSize method to advance from object to object on the garbage collection heap, add alignment padding manually, as necessary.

  • On 32-bit Windows, COR_PRF_GC_GEN_0, COR_PRF_GC_GEN_1, and COR_PRF_GC_GEN_2 use 4-byte alignment, and COR_PRF_GC_LARGE_OBJECT_HEAP uses 8-byte alignment.

  • On 64-bit Windows, the alignment is always 8 bytes.

Platforms: See .NET Framework System Requirements.

Header: CorProf.idl

Library: CorGuids.lib

.NET Framework Versions: 3.5 SP1, 3.5, 3.0 SP1, 3.0, 2.0 SP1, 2.0




September 2011

Added information about alignment padding for objects on the garbage collection heap.

Information enhancement.