| public static AllocateObject ( uint size ) : void* | ||
| size | uint | |
| return | void* | |
public static Pointer AllocateArray(RuntimeTypeHandle handle, uint elementSize, uint elements)
{
// An array has the following memory layout:
// - Pointer TypeDef
// - Pointer SyncBlock
// - int length
// - ElementType[length] elements
// - Padding
uint allocationSize = ((uint)(Pointer.Size) * 3) + (elements * elementSize);
allocationSize = (allocationSize + 3) & ~3u; // Align to 4-bytes boundary
var memory = GC.AllocateObject(allocationSize);
memory.StorePointer(0, new Pointer(handle.Value));
if (Pointer.Size == 4)
{
memory.Store32(Pointer.Size, 0);
memory.Store32(Pointer.Size * 2, elements);
}
else
{
memory.Store64(Pointer.Size, 0);
memory.Store64(Pointer.Size * 2, elements);
}
return(memory);
}
public static IntPtr AllocateArray(RuntimeTypeHandle handle, uint elementSize, uint elements)
{
// An array has the following memory layout:
// - IntPtr TypeDef
// - IntPtr SyncBlock
// - int length
// - ElementType[length] elements
// - Padding
uint allocationSize = ((uint)(IntPtr.Size) * 3) + (elements * elementSize);
allocationSize = (allocationSize + 3) & ~3u; // Align to 4-bytes boundary
var memory = GC.AllocateObject(allocationSize);
Intrinsic.Store(memory, 0, handle.Value);
if (IntPtr.Size == 4)
{
Intrinsic.Store32(memory, IntPtr.Size, 0);
Intrinsic.Store32(memory, IntPtr.Size * 2, elements);
}
else
{
Intrinsic.Store64(memory, IntPtr.Size, 0);
Intrinsic.Store64(memory, IntPtr.Size * 2, elements);
}
return(memory);
}
public static Pointer AllocateObject(Pointer methodTable, uint classSize)
{
var hashvalue = Interlocked.Increment(ref objectSequence);
// An object has the following memory layout:
// - Object Header
// - Hash Value (32-bit)
// - Lock & Status (32-bit)
// - MethodTable (Object references point here, so this is relative 0)
// - 0 .. n object data fields
var allocationSize = 4 + 4 + Pointer.Size + classSize;
var memory = GC.AllocateObject((uint)allocationSize);
// Hash
memory.Store32(0, hashvalue);
// Lock & Status
memory.Store32(4, 0);
// Set MethodTable
memory.StorePointer(8, methodTable);
return(memory + 8 + Pointer.Size);
}
public static Pointer AllocateObject(RuntimeTypeHandle handle, uint classSize)
{
// An object has the following memory layout:
// - Pointer TypeDef
// - Pointer SyncBlock
// - 0 .. n object data fields
var memory = GC.AllocateObject((2 * (uint)(Pointer.Size)) + classSize);
memory.StorePointer(0, new Pointer(handle.Value));
if (Pointer.Size == 4)
{
memory.Store32(Pointer.Size, 0);
}
else
{
memory.Store64(Pointer.Size, 0);
}
return(memory);
}
public static IntPtr AllocateObject(RuntimeTypeHandle handle, uint classSize)
{
// An object has the following memory layout:
// - IntPtr TypeDef
// - IntPtr SyncBlock
// - 0 .. n object data fields
var memory = GC.AllocateObject((2 * (uint)(IntPtr.Size)) + classSize);
Intrinsic.Store(memory, 0, handle.Value);
if (IntPtr.Size == 4)
{
Intrinsic.Store32(memory, IntPtr.Size, 0);
}
else
{
Intrinsic.Store64(memory, IntPtr.Size, 0);
}
return(memory);
}
public static void *AllocateMemory(uint size)
{
return(GC.AllocateObject(size));
}
