DIRECTORY
AMModel USING [Section],
AMTypes USING [Error, TV],
AMViewerOps USING [SectionFromSelection],
Buttons USING [Button, ButtonProc, Create, ReLabel],
Commander USING [CommandProc, Register],
Containers USING [ChildXBound, ChildYBound, Container],
Convert USING [CardFromRope],
Graphics USING [
black, Box, ClipArea, Context, CurveTo, DrawArea, DrawBox, DrawRope, DrawStroke, FontRef, GetBounds, MoveTo, NewPath, Path, Rotate, SetColor, SetCP, SetPaintMode, Translate, white],
GraphicsBasic USING [ClipperRef],
GraphicsOps USING [BitmapRef, DrawBitmap, GetClipper, 
NewBitmap, NewContextFromBitmap, SetClipper],
Icons USING [DrawIconProc, IconFlavor, IconRef, IconRep, NewIcon],
IO USING [char, Close, CR, int, Put, rope, RopeFromROS, ROS, STREAM],
Labels USING [Create, Label, Set],
PrincOps USING [PsbIndex, PsbNull],
Rope USING [Cat, Equal, Flatten, Index, Length, ROPE, Text],
Rules USING [Create],
SpyClient USING [
ClearBreaks, ClearUserBreaks, DataType, DisplayData, InitializeSpy, SetStartBreak, SetStopBreak, SetTrace, SetUserBreak, StartSpy, StopSpy],
VFonts USING [EstablishFont, Font, GraphicsFont],
ViewerClasses USING [InitProc, Viewer, ViewerClass, ViewerClassRec],
ViewerIO USING [CreateViewerStreams],
ViewerOps USING [ChangeColumn, CreateViewer, DestroyViewer, FetchViewerClass, OpenIcon, PaintViewer, RegisterViewerClass],
ViewerTools USING [GetContents, GetSelectedViewer, GetSelectionContents, MakeNewTextViewer, SelPos, SetSelection];

SpyViewerImpl: MONITOR
IMPORTS
AMTypes, AMViewerOps, Buttons, Commander, Containers, Convert, Graphics, GraphicsOps, Icons, IO, Labels, Rope, Rules, SpyClient, VFonts, ViewerIO, ViewerOps, ViewerTools
SHARES IO =

BEGIN
OPEN IO;

ROPE: TYPE = Rope.ROPE;
TV: TYPE = AMTypes.TV;

-- Global Variables --

typescript: IO.STREAM _ NIL;
typescriptBox: ViewerClasses.Viewer _ NIL;
spyViewer: Containers.Container _ NIL;

iconFlavor: Icons.IconFlavor;
iconBitmap: GraphicsOps.BitmapRef;


CreateSpyClass: PROCEDURE =
BEGIN
icon: Icons.IconRef; 
context: Graphics.Context;
spyClass: ViewerClasses.ViewerClass;
iconBitmap _ GraphicsOps.NewBitmap[64, 64];
context _ GraphicsOps.NewContextFromBitmap[iconBitmap];
PaintMagnifier[context, "Spy"];
icon _ NEW[Icons.IconRep _ [bits: ALL[0], proc: PaintSpyIcon]];
iconFlavor _ Icons.NewIcon[icon];
spyClass _ NEW[ViewerClasses.ViewerClassRec _ []];
spyClass^ _ ViewerOps.FetchViewerClass[$Container]^;
ContainerInit _ spyClass.init;
spyClass.init _ CreateSpyViewer;
spyClass.icon _ iconFlavor;
ViewerOps.RegisterViewerClass[$Spy, spyClass];
Commander.Register["Spy", Spy, "performance measurement tool."];
END;

ContainerInit: ViewerClasses.InitProc;

PaintSpyIcon: Icons.DrawIconProc =
CHECKED BEGIN
Graphics.SetCP[context, 0, 64];
GraphicsOps.DrawBitmap[context, iconBitmap, 64, 64];
END;

PaintMagnifier: PROCEDURE[context: Graphics.Context, name: Rope.ROPE] =
BEGIN
box: Graphics.Box;
vfont: VFonts.Font;
clipper: GraphicsBasic.ClipperRef;
cx1, cy1, r1, cx2, cy2, r2: REAL;
timesroman10B, timesroman18B: Graphics.FontRef;
cx1 _ 28; cy1 _ 40; r1 _ 20;
cx2 _ 24; cy2 _ 37; r2 _ 20; 
box _ Graphics.GetBounds[context];
Graphics.DrawBox[context, box];
box.xmin _ box.xmin+1; box.ymin _ box.ymin+1;
box.xmax _ box.xmax-1; box.ymax _ box.ymax-1;
Graphics.SetColor[context, Graphics.white];
Graphics.DrawBox[context, box];
vfont _ VFonts.EstablishFont["TimesRoman", 10, TRUE];
timesroman10B _ VFonts.GraphicsFont[vfont];
Graphics.SetCP[context, cx1+5, cy1-2];
Graphics.SetColor[context, Graphics.black];
Graphics.DrawRope[context, name,,,timesroman10B];
Graphics.SetColor[context, Graphics.white];
Graphics.DrawArea[context, CreateCircle[cx1, cy1, r1]];
Graphics.SetColor[context, Graphics.black];
[] _ Graphics.SetPaintMode[context, invert];
Graphics.DrawArea[context, CreateCircle[cx1, cy1, r1]];
Graphics.DrawArea[context, CreateCircle[cx2, cy2, r2]];
vfont _ VFonts.EstablishFont["TimesRoman", 18, TRUE];
timesroman18B _ VFonts.GraphicsFont[vfont];
clipper _ GraphicsOps.GetClipper[context];
[] _ Graphics.SetPaintMode[context, opaque];
Graphics.DrawStroke[context, CreateCircle[cx1, cy1, r1], 0, TRUE];
Graphics.ClipArea[context, CreateCircle[cx2, cy2, r2]];
Graphics.SetCP[context, cx1-3, cy1-4];
Graphics.DrawRope[context, name,,,timesroman18B];
GraphicsOps.SetClipper[context, clipper];
Graphics.Translate[context, cx1, cy1]; -- center
Graphics.Rotate[context, 30];
box _ [-3, -r1-20, 3, -r1];
Graphics.DrawBox[context, box]; 
END;

CreateCircle: PROCEDURE[x, y, r: REAL] RETURNS[path: Graphics.Path] = 
BEGIN
h: REAL _ 4*r/3;
path _ Graphics.NewPath[];
Graphics.MoveTo[path, x-r, y];
Graphics.CurveTo[path, x-r, y+h, x+r, y+h, x+r, y];
Graphics.CurveTo[path, x+r, y-h, x-r, y-h, x-r, y];
END;


Spy: Commander.CommandProc = TRUSTED BEGIN
IF spyViewer = NIL OR spyViewer.destroyed 
THEN spyViewer _ ViewerOps.CreateViewer[flavor: $Spy, 
info: [name: "Spy", scrollable: FALSE, iconic: TRUE]]
ELSE IF spyViewer.iconic
THEN ViewerOps.OpenIcon[spyViewer]
ELSE ViewerOps.PaintViewer[spyViewer, all];
IF spyViewer.offDeskTop THEN ViewerOps.ChangeColumn[spyViewer, left];
END;

CreateSpyViewer: ViewerClasses.InitProc =
TRUSTED BEGIN
rule: ViewerClasses.Viewer;
x:INTEGER = 10; -- upper left corner of commands
y:INTEGER = 10; 
sp:INTEGER = 6; 
line:INTEGER = 20; -- height of each line
ContainerInit[self];
rule _ Rules.Create[info: [parent: self, wx: 0, wy: y + 4*line, ww: 100, wh: 1]];
Containers.ChildXBound[self, rule];
typescriptBox _ ViewerOps.CreateViewer[flavor: $Typescript,
info: [wx: 0, wy: y + 4*line + 1,
ww: 70*sp+x-5, wh: 40*line,
border: FALSE, 
parent: self]];
typescript _ ViewerIO.CreateViewerStreams["Spy.Log",typescriptBox].out;
Containers.ChildXBound[self, typescriptBox];
Containers.ChildYBound[self, typescriptBox];

spyOnButton _ Buttons.Create[
proc: ToggleSpy, 
documentation: "Spy records data only when this is 'on'.",
info: [name: "Spy: {off}  ",
wx: x, wy: y, 
border: FALSE,
parent: self]];
SetSpyButton[];
dataTypeButton _ Buttons.Create[
proc: ToggleType,
documentation: "Gives the resource to be monitored.  Toggle through for list.",
info: [name: "Watching: {CPU}            ",
wx: x + 15*sp, wy: y,
border: FALSE,
parent: self]];
SetTypeButton[];
processBoxX _ 475 - 34*sp;
processBoxY _ y + 1;
processBoxW _ 8*sp;
processBoxH _ line;
bracketLabel _ Labels.Create[
info: [name: "  ", -- used to print the trailing bracket when dataType = process
wx: processBoxX + processBoxW, wy: processBoxY,
border: FALSE, parent: self]];
tablesLabel _ Labels.Create[
info: [name: "                ", -- indicates when tables are being built
wx: processBoxX + processBoxW + 3*sp, wy: y,
border: FALSE, parent: self]];

displayButton _ Buttons.Create[
fork: TRUE,
documentation: "Displays the current data on a separate typescript.",
proc: DisplayData, 
info: [name: "DisplayData!",
wx: x, wy: y + line, 
parent: self]];
cutoffButton _ Buttons.Create[
proc: ToggleCutoff,
documentation: "Specifies percentage cutoff for printing.",
info: [name: "cutoff: {100}",
wx: x + 15*sp, wy: y + line,
border: FALSE,
parent: self]];
SetCutoffButton[];    
setStartBreakButton _ Buttons.Create[
proc: SetStartBreak,
documentation: "Select a source or a rope of the form ModuleImpl.Proc.", 
info: [name: "SetStartBreak!",
wx: x, wy: y + 2*line, 
parent: self]];
setStopBreakButton _ Buttons.Create[
proc: SetStopBreak,
documentation: "Spy will record data as long as the number of start breaks exceeds the number of stops.", 
info: [name: "SetStopBreak!",
wx: x + 15*sp, wy: y + 2*line, -- 31
parent: self]];
clearBreaksButton _ Buttons.Create[
proc: ClearBreaks,
documentation: "Clears the breaks given by user; resets the mode.", 
info: [name: "ClearBreaks!",
wx: x + 31*sp, wy: y + 2*line,  -- 47
parent: self]];

setUserBreakButton _ Buttons.Create[
proc: SetUserBreak,
documentation: "Spy will count the given breaks as they are encountered.",
info: [name: "SetUserBreak!",
wx: x, wy: y + 3*line, 
parent: self]];
setTraceButton _ Buttons.Create[
proc: SetUserBreak,
clientData: $Trace,
documentation: "Logs a trace whenever the break is encountered.",
info: [name: "SetTrace!",
wx: x + 15*sp, wy: y + 3*line, 
parent: self]];
clearUserBreaksButton _ Buttons.Create[
documentation: "Clears the user breaks given.",
proc: ClearUserBreaks, 
info: [name: "ClearUserBreaks!",
wx: x + 27*sp, wy: y + 3*line, 
parent: self]];
END;


break: BOOLEAN _ FALSE;
spyOn: BOOLEAN _ FALSE;
displayButton: Buttons.Button _ NIL;
spyOnButton: Buttons.Button _ NIL;
tablesLabel: Labels.Label _ NIL;
bracketLabel: Labels.Label _ NIL;

SetSpyButton: PROCEDURE =
BEGIN
SELECT TRUE FROM
break AND spyOn => {
IF ~Rope.Equal[spyOnButton.name, "Break: {on}"] 
THEN typescript.Put[char[CR], rope["Start breaks enabled."], char[CR]];
Buttons.ReLabel[spyOnButton, "Break: {on}"]};
break AND ~spyOn => {
IF ~Rope.Equal[spyOnButton.name, "Break: {off}"] 
THEN typescript.Put[char[CR], rope["Start breaks disabled."], char[CR]];
Buttons.ReLabel[spyOnButton, "Break: {off}"]};
~break AND spyOn => {
IF ~Rope.Equal[spyOnButton.name, "Spy: {on}"] 
THEN typescript.Put[char[CR], rope["Spy started."], char[CR]];
Buttons.ReLabel[spyOnButton, "Spy: {on}"]};
ENDCASE => {
IF ~Rope.Equal[spyOnButton.name, "Spy: {off}"] 
THEN typescript.Put[char[CR], rope["Spy stopped."], char[CR]];
Buttons.ReLabel[spyOnButton, "Spy: {off}"]};
END;

ToggleSpy: Buttons.ButtonProc =
TRUSTED BEGIN
SELECT spyOn FROM
TRUE => StopSpy[];
FALSE => StartSpy[];
ENDCASE => ERROR;
END;

StopSpy: PROCEDURE =
BEGIN  
spyOn _ FALSE;
SpyClient.StopSpy[];
SetSpyButton[];
END;

StartSpy: PROCEDURE =
BEGIN
error: ROPE _ NIL;
process: PrincOps.PsbIndex _ PrincOps.PsbNull;
Labels.Set[tablesLabel,"initializing"];
IF dataType = breakProcess AND ~break THEN 
error _ "Watching break process but no breaks set!";
IF dataType = process THEN { 
process _ Convert.CardFromRope[ViewerTools.GetContents[processBox], 8];
IF process = PrincOps.PsbNull THEN error _ "No process specified."};
IF error = NIL THEN error _ SpyClient.InitializeSpy[
dataType: dataType,
process: process];
Labels.Set[tablesLabel, NIL];
IF error # NIL THEN {typescript.Put[char[CR],rope[error],char[CR]]; RETURN};
spyOn _ TRUE;
SetSpyButton[];
SpyClient.StartSpy[];
END;

dataType: SpyClient.DataType _ CPU;
dataTypeButton: Buttons.Button _ NIL;
processBox: ViewerClasses.Viewer _ NIL;
processBoxX, processBoxY, processBoxW, processBoxH: CARDINAL;

SetTypeButton: PROCEDURE =
BEGIN
Buttons.ReLabel[dataTypeButton,
SELECT dataType FROM
CPU => "Watching: {CPU}",
process => "Watching: {process number: ",
breakProcess => "Watching: {break process}",
pagefaults => "Watching: {pagefaults}",
allocations => "Watching: {allocations}",
wordsAllocated => "Watching: {wordsAllocated}",
userDefined => "Watching: {user breaks}",
ENDCASE => ERROR];
IF dataType = process AND (processBox = NIL OR processBox.destroyed) THEN { 
processBox _ ViewerTools.MakeNewTextViewer[
info: [wx: processBoxX, wy: processBoxY,
ww: processBoxW, wh: processBoxH, 
border: FALSE, scrollable: FALSE,
parent: spyViewer]];
Labels.Set[bracketLabel, "}"];
ViewerTools.SetSelection[processBox]}; 
IF dataType # process AND processBox # NIL AND ~processBox.destroyed THEN {
ViewerOps.DestroyViewer[processBox];
Labels.Set[bracketLabel, "  "]};
END;

ToggleType: Buttons.ButtonProc =
TRUSTED BEGIN
dataType _ SELECT mouseButton FROM
red => IF dataType = LAST[SpyClient.DataType] 
THEN FIRST[SpyClient.DataType] ELSE SUCC[dataType],
blue => IF dataType = FIRST[SpyClient.DataType] 
THEN LAST[SpyClient.DataType] ELSE PRED[dataType],
ENDCASE => CPU;
SetTypeButton[];
END;


cutoff: CARDINAL _ 3;
cutoffButton: Buttons.Button;

ToggleCutoff: Buttons.ButtonProc = 
TRUSTED BEGIN
SELECT mouseButton FROM
blue => IF cutoff > 0 THEN cutoff _ cutoff - 1;
yellow => cutoff _ 3;
red => IF cutoff < 100 THEN cutoff _ cutoff + 1;
ENDCASE;
SetCutoffButton[];
END;

SetCutoffButton: PROC = 
BEGIN
stream: IO.STREAM;
stream _ IO.ROS[];
stream.Put[rope["cutoff: {"], int[cutoff], rope["}"]];
Buttons.ReLabel[cutoffButton, IO.RopeFromROS[stream]];
stream.Close[];
END;

DisplayData: Buttons.ButtonProc =
TRUSTED BEGIN
IF spyOn THEN StopSpy[];
SpyClient.DisplayData[cutoff, NIL, NIL, control];
IF control THEN SpyClient.DisplayData[cutoff, "Results of spying on Spy log."];
END;


setStartBreakButton: Buttons.Button _ NIL;
setStopBreakButton: Buttons.Button _ NIL;
clearBreaksButton: Buttons.Button _ NIL;


ClearBreaks: Buttons.ButtonProc =
TRUSTED BEGIN
SpyClient.ClearBreaks[];
typescript.Put[char[CR], rope["Start and Stop Breaks cleared."], char[CR]];
break _ FALSE;
StopSpy[];
END;

SetStartBreak: Buttons.ButtonProc =
TRUSTED BEGIN
msg, name: ROPE;
ok: BOOLEAN _ FALSE;
section: AMModel.Section;
[section, name, msg] _ LocationFromSelection[];
IF section # NIL OR name # NIL THEN [ok, msg] _ SpyClient.SetStartBreak[section, name];
typescript.Put[char[CR], rope[msg], char[CR]];
IF ~ok THEN RETURN;
break _ TRUE;
dataType _ breakProcess;
SetTypeButton[];
StopSpy[];
END;

SetStopBreak: Buttons.ButtonProc =
TRUSTED BEGIN
msg, name: ROPE;
ok: BOOLEAN _ FALSE;
section: AMModel.Section;
[section, name, msg] _ LocationFromSelection[];
IF section # NIL OR name # NIL THEN [ok, msg] _ SpyClient.SetStopBreak[section, name];
typescript.Put[char[CR], rope[msg], char[CR]];
IF ~ok THEN RETURN;
break _ TRUE;
StopSpy[];
END;


setTraceButton: Buttons.Button _ NIL;
setUserBreakButton: Buttons.Button _ NIL;
clearUserBreaksButton: Buttons.Button _ NIL;

ClearUserBreaks: Buttons.ButtonProc =
TRUSTED BEGIN
SpyClient.ClearUserBreaks[];
typescript.Put[char[CR], rope["User Breaks cleared."], char[CR]];
IF dataType = userDefined THEN StopSpy[];
END;

SetUserBreak:  Buttons.ButtonProc =
TRUSTED BEGIN
msg, name: ROPE;
ok: BOOLEAN _ FALSE;
section: AMModel.Section;
[section, name, msg] _ LocationFromSelection[];
IF section # NIL OR name # NIL THEN  IF clientData = $Trace
THEN [ok, msg] _ SpyClient.SetTrace[section, name]
ELSE [ok, msg] _ SpyClient.SetUserBreak[section, 1, name];
typescript.Put[char[CR], rope[msg], char[CR]];
IF ~ok THEN RETURN;
StopSpy[];
IF dataType = userDefined THEN RETURN;
dataType _ userDefined;
SetTypeButton[];
END;

LocationFromSelection: PROC 
RETURNS[section: AMModel.Section _ NIL, name, error: Rope.ROPE _ NIL] = BEGIN
viewer: ViewerClasses.Viewer;
viewer _ ViewerTools.GetSelectedViewer[];
IF viewer.class.flavor # $Text OR ~Rope.Equal[Split[viewer.name].ext, "mesa"] THEN {
module, proc: Rope.ROPE;
contents: Rope.ROPE _ ViewerTools.GetSelectionContents[];
[module, proc] _ Split[contents];
IF module = NIL OR proc = NIL THEN RETURN[error: "bad selection"];
RETURN[name: Rope.Cat[module, ".", proc]]};
section _ AMViewerOps.SectionFromSelection[! AMTypes.Error => {error _ msg; CONTINUE}].section;
END;

Split: PROC [name: ROPE] RETURNS [root: Rope.Text, ext: Rope.Text] = INLINE {
dotIndex: INT _ name.Index[0, "."];
bangIndex: INT _ name.Index[0, "!"];
-- find the final "."
FOR nextDot: INT _ name.Index[dotIndex+1, "."], name.Index[dotIndex+1, "."] UNTIL nextDot = name.Length[] DO dotIndex _ nextDot ENDLOOP;
IF dotIndex < 0 THEN RETURN[name.Flatten[], NIL];
IF bangIndex < 0 THEN bangIndex _ name.Length[];
RETURN[name.Flatten[0, dotIndex], name.Flatten[dotIndex+1, bangIndex-dotIndex-1]]};

CreateSpyClass[];
[] _ Spy[NIL];

END.


LocationFromSelection: PROC[entry, exit: BOOLEAN _ FALSE] 
RETURNS[loc: BBObjectLocation.Location _ NIL, msg: Rope.ROPE _ NIL] = BEGIN
selection: Rope.ROPE _ ViewerTools.GetSelectionContents[];
IF Runtime.IsBound[BBVOps.LocationFromSelection] THEN {
loc _ BBVOps.LocationFromSelection[NIL, entry, exit ! BBVOps.SourceError => CONTINUE];
IF loc = NIL THEN msg _ "couldn't get a location out of the selection."};
IF loc = NIL THEN {
tv: AMTypes.TV;
module, proc: Rope.ROPE;
[module, proc] _ Split[selection];
IF proc # NIL THEN tv _ BBContext.GlobalFrameSearch[NIL, module, proc].tv;
IF tv # NIL THEN loc _ BBObjectLocation.TVToLocation[tv];
IF loc # NIL AND entry THEN loc _ BBObjectLocation.EntryLocation[loc];
IF loc # NIL AND exit THEN loc _ BBObjectLocation.ExitLocation[loc]};
IF loc = NIL AND msg = NIL THEN msg _ "Please load BugBane.bcd.";
END;

Split: PROC [name: ROPE] RETURNS [Rope.Text, Rope.Text] = {
length: INT _ name.Length[];
pos: INT _ name.Index[0, "."];
IF pos = length THEN RETURN[name.Flatten[], NIL];
RETURN[name.Flatten[0, pos], name.Flatten[pos + 1, length]]};


SpyViewerImpl.mesa 
Edited by Maxwell, December 14, 1983 3:28 pm
Edited by Donahue, August 15, 1984 10:16:56 am PDT
**************************************************
class and icon initialization
**************************************************
erase old
write in name
overwrite magnifier
invert for magnifier
write in NAME
draw in handle
**************************************************
spy viewer creation
**************************************************

typescript
first line
second line

third line 
fourth line
**************************************************
turning the spy off and on
************************************************** 

**************************************************
determine the data type
**************************************************
**************************************************
displaying data
**************************************************
**************************************************
setting and clearing start and stop breaks
**************************************************
set your breaks and then turn the spy on
as long as there have been more start breaks than stop breaks
the spy will keep on counting
turning the spy off will stop the counting (although not the breaks).
hit ClearBreaks to delete breaks.
**************************************************
 setting and clearing user breaks 
**************************************************
**************************************************
 utility procedures 
**************************************************
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