C# Signature:
[DllImport("kernel32.dll", SetLastError = true)]
static extern bool HeapWalk(IntPtr hHeap, ref PROCESS_HEAP_ENTRY lpEntry);
VB Signature:
Declare Function heapwalk Lib "kernel32.dll" (TODO) As TODO
User-Defined Types:
[Flags]
public enum PROCESS_HEAP_ENTRY_WFLAGS : ushort
{
PROCESS_HEAP_ENTRY_BUSY = 0x0004,
PROCESS_HEAP_ENTRY_DDESHARE = 0x0020,
PROCESS_HEAP_ENTRY_MOVEABLE = 0x0010,
PROCESS_HEAP_REGION = 0x0001,
PROCESS_HEAP_UNCOMMITTED_RANGE = 0x0002,
}
[StructLayoutAttribute(LayoutKind.Explicit)]
public struct UNION_BLOCK
{
[FieldOffset(0)]
public STRUCT_BLOCK Block;
[FieldOffset(0)]
public STRUCT_REGION Region;
}
[StructLayoutAttribute(LayoutKind.Sequential)]
public struct STRUCT_BLOCK
{
public IntPtr hMem;
public uint dwReserved1_1;
public uint dwReserved1_2;
public uint dwReserved1_3;
}
[StructLayoutAttribute(LayoutKind.Sequential)]
public struct STRUCT_REGION
{
public uint dwCommittedSize;
public uint dwUnCommittedSize;
public IntPtr lpFirstBlock;
public IntPtr lpLastBlock;
}
[StructLayoutAttribute(LayoutKind.Sequential)]
public struct PROCESS_HEAP_ENTRY
{
public IntPtr lpData;
public uint cbData;
public byte cbOverhead;
public byte iRegionIndex;
public PROCESS_HEAP_ENTRY_WFLAGS wFlags;
public UNION_BLOCK UnionBlock;
}
Alternative Managed API:
Do you know one? Please contribute it!
Notes:
None.
Tips & Tricks:
Please add some!
Sample Code:
PROCESS_HEAP_ENTRY h = new PROCESS_HEAP_ENTRY();
uint size = 0;
while(HeapWalk(heapHandle, ref h))
{
if (h.wFlags == PROCESS_HEAP_ENTRY_WFLAGS.PROCESS_HEAP_ENTRY_BUSY)
{
size += h.cbData;
}
}
Console.WriteLine("Size: " + size);
