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ETO Development Tools 4
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MacsBug
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MacsBug 6.2.1
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dcmds
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Pascal Samples
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Heap.p
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1991-05-01
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2KB
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89 lines
UNIT Heap;
(* The following MPW commands will build the dcmd and copy it to the
"Debugger Prefs" file in the System folder. The dcmd's name in
MacsBug will be the name of the file built by the Linker.
Pascal Heap.p
Link dcmdGlue.a.o Heap.p.o "{Libraries}Runtime.o" "{PLibraries}PasLib.o" -o Heap
BuildDcmd Heap 100
Echo 'include "Heap";' | Rez -a -o "{systemFolder}Debugger Prefs"
*)
{$R-}
INTERFACE
USES MemTypes, dcmd;
{ Public declaration for dcmdGlue. Must be in every dcmd. The name cannot be changed. }
PROCEDURE CommandEntry (paramPtr: dcmdBlockPtr);
IMPLEMENTATION
PROCEDURE NumberToHex (number: LONGINT; VAR hex: Str255);
VAR digits: Str255;
n: INTEGER;
BEGIN
digits := '0123456789ABCDEF';
hex := '00000000';
FOR n := 8 DOWNTO 1 DO
BEGIN
hex[n] := digits[1 + (number MOD 16)];
number := number DIV 16;
END;
END;
PROCEDURE DisplayBlockInfo (blockAddress, blockLength, masterPtr: LONGINT; blockType: INTEGER; locked, purgeable, resource: BOOLEAN);
VAR value: Str255;
BEGIN
NumberToHex (blockAddress, value);
dcmdDrawLine (value);
NumberToHex (blockLength, value);
dcmdDrawString (' ');
dcmdDrawString (value);
IF blockType = relocatableBlock THEN
BEGIN
NumberToHex (masterPtr, value);
dcmdDrawString (' ');
dcmdDrawString (value);
dcmdDrawString (' ');
IF locked THEN
dcmdDrawString ('Locked ');
IF purgeable THEN
dcmdDrawString ('Purgeable ');
IF resource THEN
dcmdDrawString ('Resource ');
END;
END;
PROCEDURE CommandEntry (paramPtr: DCmdBlockPtr);
BEGIN
IF paramPtr^.request = dcmdInit THEN
BEGIN { The dcmd gets called once when loaded to init itself }
END
ELSE
IF paramPtr^.request = dcmdDoIt THEN
BEGIN { Do the command's normal function }
{ Draw the column labels }
dcmdDrawLine (' Address Length Mstr Ptr');
{ The MacsBug heap iterator will call DisplayBlockInfo once for each block in the heap }
dcmdForAllHeapBlocks (@DisplayBlockInfo);
END
ELSE
IF paramPtr^.request = dcmdHelp THEN
BEGIN { Display the command's help information }
dcmdDrawLine ('HEAP');
dcmdDrawLine (' Displays information about all heap blocks');
END;
END;
END.