public static void InitDynamic(UnsafeBuffer *buffer, int length, int stride)
{
Assert.Check(buffer != null);
Assert.Check(length > 0);
Assert.Check(stride > 0);
buffer->Ptr = AllocHelper.MallocAndClear(length * stride, AllocHelper.GetAlignmentForArrayElement(stride));
buffer->Length = length;
buffer->Stride = stride;
buffer->Dynamic = true;
}
public static void InitDynamic(UnsafeBuffer *buffer, int length, int stride)
{
Assert.Check(buffer != null);
Assert.Check(length > 0);
Assert.Check(stride > 0);
buffer->Ptr = Native.MallocAndClear(length * stride, Native.GetAlignment(stride));
buffer->Length = length;
buffer->Stride = stride;
buffer->Dynamic = 1;
}
public static void FillFromString(UnsafeBuffer *buffer, string value)
{
using (var stream = new UnsafeStream((byte *)buffer))
using (var writer = new StreamWriter(stream, BsonConstants.Encoding))
{
foreach (var symbol in value)
{
writer.Write(symbol);
}
}
}
public static void InitFixed(UnsafeBuffer *buffer, void *ptr, int length, int stride)
{
Assert.Check(buffer != null);
Assert.Check(ptr != null);
Assert.Check(length > 0);
Assert.Check(stride > 0);
// ensure alignment of fixed buffer
Assert.Check((((IntPtr)ptr).ToInt64() % AllocHelper.GetAlignmentForArrayElement(stride)) == 0);
buffer->Ptr = ptr;
buffer->Length = length;
buffer->Stride = stride;
buffer->Dynamic = false;
}
public static void Free(UnsafeBuffer *buffer)
{
Assert.Check(buffer != null);
if (buffer->Dynamic == false)
{
throw new InvalidOperationException("Can't free a fixed buffer");
}
// buffer ptr can't be null
Assert.Check(buffer->Ptr != null);
// free memory of ptr
AllocHelper.Free(buffer->Ptr);
// clear buffer itself
*buffer = default;
}
public static void InitDynamic <T>(UnsafeBuffer *buffer, int length) where T : unmanaged
{
InitDynamic(buffer, length, sizeof(T));
}
public static void Clear(UnsafeBuffer *buffer)
{
AllocHelper.MemClear(buffer->Ptr, buffer->Length * buffer->Stride);
}
public static void Clear(UnsafeBuffer *buffer)
{
Native.MemClear(buffer->Ptr, buffer->Length * buffer->Stride);
}
