1.7 KiB
C#/.NET System namespace support
Burst provides support for some of the System namespace, transforming these into Burst compatible variants in the Burst compiler.
System.Math
Burst supports all methods that System.Math declares, with the following exceptions:
double IEEERemainder(double x, double y)is only supported when Api Compatibility Level is set to .NET Standard 2.1 in project settings
System.IntPtr
Burst supports all methods of System.IntPtr/System.UIntPtr, including the static fields IntPtr.Zero and IntPtr.Size
System.Threading.Interlocked
Burst supports atomic memory intrinsics for all methods provided by System.Threading.Interlocked (for example, Interlocked.Increment).
Make sure that the source location of the interlocked methods are naturally aligned. For example, the alignment of the pointer is a multiple of the pointed-to-type:
[StructLayout(LayoutKind.Explicit)]
struct Foo
{
[FieldOffset(0)] public long a;
[FieldOffset(5)] public long b;
public long AtomicReadAndAdd()
{
return Interlocked.Read(ref a) + Interlocked.Read(ref b);
}
}
If the pointer to the struct Foo has an alignment of 8, which is the natural alignment of a long value, the Interlocked.Read of a would be successful because it lies on a naturally aligned address. However, b would not be successful and undefined behavior happens at the load of b as a result.
System.Threading.Thread
Burst supports the MemoryBarrier method of System.Threading.Thread.
System.Threading.Volatile
Burst supports the non-generic variants of Read and Write provided by System.Threading.Volatile.