-- File: PupNameServer.mesa, Last Edit: HGM March 2, 1981 9:41 PM
-- Please don't forget to update the herald too.....
DIRECTORY
Process USING [Yield],
Time USING [Current],
Format USING [], -- Needed by Put.Date and such
FormSW USING [
ClientItemsProcType, ProcType, AllocateItemDescriptor, newLine, Display,
FindItem, CommandItem],
Menu USING [Create, Handle, Instantiate, ItemObject, MCRType],
Put USING [Char, CR, Date, Decimal, Line, LongNumber, Number, Text],
Tool USING [Create, MakeFileSW, MakeFormSW, MakeMsgSW, MakeSWsProc],
ToolWindow USING [TransitionProcType],
UserInput USING [GetDefaultWindow, userAbort],
Window USING [Handle],
NameServerDefs USING [
CacheEntry, EnumerateCache, msg, nameRunning, probing, PupDirServerOn,
PupNameServerOff, PupNameServerOn, sending, StartProbingForDirectory,
statVers, statSend, statName, statAddress, statConst, statBusy, statHits,
statMisses, statNone, statFile, statMsScanningFile],
PupDefs USING [AppendPupAddress],
StatsDefs USING [StatGetCounter];
PupNameServerTool: PROGRAM
IMPORTS
Process, Time, FormSW, Menu, Put, Tool, UserInput, NameServerDefs, PupDefs,
StatsDefs
EXPORTS NameServerDefs =
BEGIN
form, log: PUBLIC Window.Handle ← NIL;
Init: PROCEDURE =
BEGIN
[] ← Tool.Create[
name: "Name Server of March 2, 1981"L, makeSWsProc: MakeSWs,
clientTransition: ClientTransition, initialState: inactive];
Menu.Instantiate[menu, UserInput.GetDefaultWindow[]];
END;
UpdatePicture: PUBLIC PROCEDURE =
BEGIN
IF form = NIL THEN RETURN;
FormSW.FindItem[form, startIX].flags.invisible ← NameServerDefs.nameRunning;
FormSW.FindItem[form, stopIX].flags.invisible ← ~NameServerDefs.nameRunning;
FormSW.Display[form];
END;
PrintNameInfo: PROCEDURE [wh: Window.Handle] =
BEGIN OPEN NameServerDefs, StatsDefs;
PrintHeader[wh, "Name Server Statistics:"L];
PrintMaybe[
wh, "Directory Version requests"L, StatGetCounter[statVers]];
PrintMaybe[wh, "Directories sent"L, StatGetCounter[statSend]];
PrintMaybe[wh, "Name Lookup requests"L, StatGetCounter[statName]];
PrintMaybe[
wh, "Address Lookup requests"L, StatGetCounter[statAddress]];
PrintMaybe[wh, "Name Lookup constants"L, StatGetCounter[statConst]];
PrintMaybe[
wh, "Requests while Name/Address Lookup server was Busy"L,
StatGetCounter[statBusy]];
PrintMaybe[
wh, "Hits in Name Lookup cache"L, StatGetCounter[statHits]];
PrintMaybe[
wh, "Misses found in Name Lookup cache"L, StatGetCounter[
statMisses]];
PrintMaybe[
wh, "Name Lookup cache misses"L, StatGetCounter[statNone]];
PrintMaybe[
wh, "Name Lookup file searches"L, StatGetCounter[statFile]];
IF StatGetCounter[statFile]#0 THEN PrintMaybe[
wh, "Average time (ms) to search file"L,
StatGetCounter[statMsScanningFile]/StatGetCounter[statFile]];
END;
PrintMaybe: PROCEDURE [wh: Window.Handle, s: STRING, n: LONG INTEGER] =
BEGIN
IF n = 0 THEN RETURN;
Put.Text[wh, s];
Put.Text[wh, ": "L];
Put.LongNumber[wh, n, [10, FALSE, TRUE, 0]];
Put.CR[wh];
END;
PrintNameServerCache: PROCEDURE [wh: Window.Handle] =
BEGIN
size: CARDINAL ← 0;
PrintOne: PROCEDURE [ce: NameServerDefs.CacheEntry] =
BEGIN
size ← size + ce.size;
IF UserInput.userAbort THEN RETURN;
Put.LongNumber[wh, ce.count, [10, FALSE, TRUE, 6]];
Put.Number[wh, ce.sequence, [10, FALSE, TRUE, 5]];
Put.Number[wh, ce.size, [10, FALSE, TRUE, 5]];
Put.Text[wh, " "L];
IF LENGTH[ce.names] = 0 THEN Put.Char[wh, '?]
ELSE
FOR i: CARDINAL IN [0..LENGTH[ce.names]) DO
IF i # 0 THEN Put.Text[wh, ", "L]; Put.Text[wh, ce.names[i]]; ENDLOOP;
Put.Text[wh, " <=> "L];
IF LENGTH[ce.addrs] = 0 THEN Put.Char[wh, '?]
ELSE
FOR i: CARDINAL IN [0..LENGTH[ce.addrs]) DO
text: STRING = [30];
IF i # 0 THEN Put.Text[wh, ", "L];
text.length ← 0;
PupDefs.AppendPupAddress[text, ce.addrs[i]];
Put.Text[wh, text];
ENDLOOP;
Put.CR[wh];
DoSomeYields[];
END;
PrintHeader[wh, "Cache for Name Lookup Server:"L];
Put.Line[wh, " Count Seq size Name(s) <=> Address(es)"L];
NameServerDefs.EnumerateCache[PrintOne];
IF size = 0 THEN Put.Line[wh, "The cache is empty."L]
ELSE
BEGIN
Put.Text[wh, "There are "L];
Put.Decimal[wh, size];
Put.Line[wh, " words in use by the cache."L];
END;
END;
PrintHeader: PROCEDURE [wh: Window.Handle, s: STRING] =
BEGIN
Put.CR[wh];
Put.Date[wh, Time.Current[], dateTime];
Put.Text[wh, " "L];
Put.Line[wh, s];
END;
DoSomeYields: PROCEDURE =
BEGIN THROUGH [0..100) DO Process.Yield[]; ENDLOOP; END;
Start: FormSW.ProcType = BEGIN NameServerDefs.PupNameServerOn[]; END;
Stop: FormSW.ProcType = BEGIN NameServerDefs.PupNameServerOff[]; END;
Probe: FormSW.ProcType =
BEGIN OPEN NameServerDefs;
SELECT TRUE FROM
probing => Put.Line[msg, "Already probing for a new directory."L];
sending => Put.Line[msg, "Currently sending the directory."L];
ENDCASE => StartProbingForDirectory[];
END;
PrintInfo: FormSW.ProcType = BEGIN PrintNameInfo[log]; END;
PrintCache: FormSW.ProcType = BEGIN PrintNameServerCache[log]; END;
MakeSWs: Tool.MakeSWsProc =
BEGIN
NameServerDefs.msg ← Tool.MakeMsgSW[window: window];
form ← Tool.MakeFormSW[window: window, formProc: MakeForm];
log ← Tool.MakeFileSW[window: window, name: "NameServer.log$"L];
Menu.Instantiate[menu, log];
END;
menu: Menu.Handle = Menu.Create[DESCRIPTOR[items], "Names", TRUE];
items: ARRAY [0..1] OF Menu.ItemObject ← [["Info", DoMenu], ["Cache", DoMenu]];
infoMx: CARDINAL = 0;
cacheMx: CARDINAL = 1;
DoMenu: Menu.MCRType =
BEGIN
IF window # log THEN window ← NIL; -- Great window in the sky
SELECT index FROM
infoMx => PrintNameInfo[window];
cacheMx => PrintNameServerCache[window];
ENDCASE => ERROR;
END;
startIX: CARDINAL = 0;
stopIX: CARDINAL = 1;
MakeForm: FormSW.ClientItemsProcType =
BEGIN
nParams: CARDINAL = 5;
items ← FormSW.AllocateItemDescriptor[nParams];
items[0] ← FormSW.CommandItem[
tag: "Start"L, proc: Start, place: FormSW.newLine,
invisible: NameServerDefs.nameRunning];
items[1] ← FormSW.CommandItem[
tag: "Stop"L, proc: Stop, place: FormSW.newLine,
invisible: ~NameServerDefs.nameRunning];
items[2] ← FormSW.CommandItem[tag: "Probe"L, proc: Probe];
items[3] ← FormSW.CommandItem[tag: "Info"L, proc: PrintInfo];
items[4] ← FormSW.CommandItem[tag: "Cache"L, proc: PrintCache];
RETURN[items, TRUE];
END;
ClientTransition: ToolWindow.TransitionProcType =
BEGIN IF new = inactive THEN NameServerDefs.msg ← form ← log ← NIL; END;
Init[];
NameServerDefs.PupNameServerOn[];
NameServerDefs.PupDirServerOn[];
END.