unsafe void LoadTestData(string path, out NativeArray <SampleData> samples, out NativeArray <StackFrameData> stackFrames, Allocator allocator = Allocator.Persistent)
{
using (var stream = File.OpenRead(path)) {
var reader = new RawReader(stream);
int numSamples = 0;
reader.Read(&numSamples);
samples = new NativeArray <SampleData>(numSamples, allocator);
reader.ReadBytes(samples.GetUnsafePtr(), numSamples * sizeof(SampleData));
int numStackFrames = 0;
reader.Read(&numStackFrames);
stackFrames = new NativeArray <StackFrameData>(numStackFrames, allocator);
reader.ReadBytes(stackFrames.GetUnsafePtr(), numStackFrames * sizeof(StackFrameData));
}
}