This wiki article contains incomplete and informal notes about the MPS, the precursor to more formal documentation. Not confidential. Readership: MPS users and developers.

This article is a place in which to collect statements about the MPS that are, or perhaps should be, true, and then chew on to decide whether they are on not. RHSK 2007-03-01.

Theorems about the MPS

isFwd only on client objects

A format isFwd() method is only called on objects allocated by the client, or copies of them created by the MPS. So in particular: never on pad objects, and never on random junk. DRJ 2007-03-01.

starting a collection (trace) causes no allocation

"it's always possible to start a trace (provided there's a free TraceId) even if there's no available memory", says trace.c#32. RHSK 2008-11-26.

B. Document History

  2007-03-01  RHSK  Created.
  2008-11-26  RHSK  trace start never allocates.

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