Last modified on Mon Jun 20 10:51:26 PDT 1994 by kalsow

RTHeapMap provides the routines needed by the collector to walk runtime values.

INTERFACE RTHeapMap;

IMPORT RT0;

TYPE Visitor <: V_;  V_ = OBJECT METHODS apply (a: ADDRESS) END;
TYPE ObjectPtr = UNTRACED REF RT0.RefHeader;

PROCEDURE WalkRef (h: ObjectPtr;  v: Visitor);

For each traced reference at address 'x' in the object referenced by 'h', call 'v(x)'.

PROCEDURE DoWalkRef(t: RT0.TypeDefn;  a: ADDRESS;  v: Visitor);

For each traced reference at address 'x' in the object of type 't' starting at address 'a', call 'v(x)'.

PROCEDURE WalkGlobals (v: Visitor);

For each traced reference at address 'x' in a global var, call 'v(x)'.

PROCEDURE WalkModuleGlobals (v: Visitor;  m: CARDINAL);

For each traced reference at address 'x' in a global variable of module 'm' (RTModule.Get(m)), call 'v(x)'

END RTHeapMap.