Service Manuals, User Guides, Schematic Diagrams or docs for : xerox mesa 4.0_1978 listing Mesa_4_System Swapper.mesa_Sep78

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Swapper.mesa                     2-Sep-78 18:05:56                               Page   1



-- Swapper.Mesa   Edited by Sandman on Jul 12. 1978 4:05 PM
DIRECTORY
  AllocDefs: FROM "allocdefs" USING [
     AllocHandle. Alloclnfo. AllocObject. DefaultDataSegmentlnfo.
     DefaultFileSegmentlnfo. DefaultFrameSegmentlnfo. DefaultTableSegmentInfo.
     PageState. SwappingProcedure. SwapStrategy].
  AltoDefs: FROM "altodefs" USING [
     BYTE. MaxVMPage. PageCount. PageNumber. PageSize].
  AltoFileDefs: FROM "altofiledefs" USING [eofDA. vDC].
  BootDefs: FROM "bootdefs" USING [
     BusyPage. FreePage. PageMap. PositionSeg. SystemTable. SystemTableHandle.
     Table. TableHandle].
  ControlDefs: FROM "controldefs" USING [
     CSegPrefix. GFT. GlobalFrameHandle. NullGlobalFrame].
  DiskDefs: FROM "diskdefs" USING [DiskRequest. SwapPages].
   FrameDefs: FROM "framedefs" USING [FlushLargeFrames. ValidateGlobalFrame].
   InlineDefs: FROM "inlinedefs" USING [BITAND].
  NucleusDefs: FROM "nucleusdefs".
  ProcessDefs: FROM "processdefs" USING [Disablelnterrupts. Enablelnterrupts].
  SDDefs: FROM "sddefs" USING [SO. sGFTLength].
  SegmentDefs: FROM "segmentdefs" USING [
     DataSegmentHandle. DefaultBase. FileSegmentHandle. FrobHandle.
     FrobLink. FrobNull. InvalidSegmentSize. MaxLocks. MaxRefs. Object.
     ObjectHandle. ObjectType. OpenFile. PageNumber. RemoteSegCommand.
     SegmentHandle];
DEFINITIONS FROM SegmentDefs;
Swapper: PROGRAM [ffvmp. lfvmp: AltoDefs.PageNumber]
  IMPORTS BootDefs. DiskDefs. FrameDefs. SegmentDefs
  EXPORTS AllocDefs. BootDefs. FrameDefs. NucleusDefs. SegmentDefs
  SHARES SegmentDefs = BEGIN
  AllocInfo: TYPE = AllocDefs.Alloclnfo;
  AllocHandle: TYPE = AllocDefs.AllocHandle;
  PageState: TYPE = AllocDefs.PageState;
  SwappingProcedure: TYPE = AllocDefs.SwappingProcedure;
  SwapStrategy: TYPE = AllocDefs.SwapStrategy;
  PageCount: TYPE = AltoDefs.PageCount;
  PageNumber: TYPE = AltoDefs.PageNumber;
  TableHandle: TYPE = BootDefs.TableHandle;
  SegmentHandle: TYPE = SegmentDefs.SegmentHandle;
  DataSegmentHandle: TYPE = SegmentDefs.DataSegmentHandle;
  FileSegmentHandle: TYPE = SegmentDefs.FileSegmentHandle;
  MaxVMPage: PageNumber = AltoDefs.MaxVMPage;
  PageSize: CARDINAL = AltoDefs.PageSize;
  PAGEDISP: TYPE = MACHINE DEPENDENT RECORD [
    page: [0 .. MaxVMPage].
    disp: [0 .. PageSize)];
  PageFromAddress: PUBLIC PROCEDURE [a:POINTER] RETURNS [PageNumber]   =
    BEGIN
    RETURN[LOOPHOLE[a.PAGEDISP].page]
    END;
  AddressFromPage: PUBLIC PROCEDURE [p:PageNumber] RETURNS [POINTER]   =
    BEGIN
    RETURN[LOOPHOLE[PAGEDISP[p.O]]]
    END;
  PagePo;nter: PUBLIC PROCEDURE [a:POINTER] RETURNS [POINTER]   =
    BEGIN
    LOOPHOLE[a.PAGEDISP].disp ~ 0;
    RE1URN[a]
    END;

  -- Data Segments
 DefaultBase: PageNumber   ~   SegmentDers.DefaultBase;
 NewDataSegment: PUBLIC PROCEDURE [base:PageNumber. pages:PageCount]
   RETURNS [seg:DataSegmentHandle] 

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