[Cyan]<CedarChest6.1>FileStreamTest>FileStreamTestImpl.mesa!1

File: FileStreamTestImpl.mesa

Last edited by MBrown on July 11, 1983 11:05 pm

Last Edited by: Hagmann, December 6, 1983 3:48 pm

Last Edited by: Taft, December 1, 1983 4:51 pm

Bob Hagmann May 16, 1985 3:35:41 pm PDT

DIRECTORY

AlpineFS,

BasicTime USING [GetClockPulses, GMT, Now, Period, Pulses, PulsesToMicroseconds],

Commander USING [CommandProc, Handle, Register],

FileStream USING [ErrorFromStream, FinalizationProc, GetFinalizationProc,

GetStreamClassData, OpenFileFromStream, SetFinalizationProc,

SetStreamClassData, SaveStreamError],

FileStreamTestInterface USING [ OneTest ],

FileStats USING [Data, GetData],

FS,

IO,

Basics USING [LongNumber, LowByte, UnsafeBlock],

Process USING [Pause],

Random USING [Create, NextInt, ChooseInt, RandomStream],

Real USING [PairToReal, SqRt],

Rope USING [Cat, Find, ROPE],

UserCredentials USING [Get],

VM;

FileStreamTestImpl: PROGRAM

IMPORTS

AlpineFS,

BasicTime,

Commander,

FileStats,

FileStream,

FileStreamTestInterface,

FS,

IO,

I: Basics,

Process,

RAN: Random,

Real,

Rope,

UserCredentials,

EXPORTS

FileStreamTestInterface

= BEGIN

ROPE: TYPE = Rope.ROPE;

STREAM: TYPE = IO.STREAM;

dpy: PUBLIC STREAM ;

fileSystem: {local, alpine} ← local;

fileNamePrefix: ROPE ← NIL;

FilePos: INT ;

CatchCount: INT ; -- for ChaseBuffers

StopChase: BOOL ← FALSE ;

randomDataBlockSize: CARDINAL = 1000;

maxFileBytes: LONG CARDINAL ← VM.BytesForPages[140] + 1;

randomSeed: CARDINAL ← 12314B;

chaseCount: INT = 800000 ;

backupChaseCount: INT = 30000 ;

debugTrace: BOOL ← FALSE;

GoSlow: BOOL ← FALSE;

Alarm: SIGNAL = CODE;

TickStop: SIGNAL = CODE;

Word Count Test - execise preread

WordCount: PROC [fileName: ROPE, vmPagesPerBuffer: INT [1 .. 128], nBuffers: INT [1 .. 4]] = {

Expects a file name as the argument, and counts the number of words in the indicated file.

totalWordCount: INT ← 0;

totalLineCount: INT ← 0;

headerWritten: BOOL ← FALSE;

verbose: BOOL ← TRUE;

Start: BasicTime.GMT ← BasicTime.Now[];

Finish: BasicTime.GMT ;

in: IO.STREAM ← StreamOpen[fileName: fileName, streamBufferParms: [vmPagesPerBuffer: vmPagesPerBuffer, nBuffers: nBuffers ]

! FS.Error => GOTO openFailed ];

charCount, wordCount, newLineCount: INT;

dpy.PutF["\n\n\nStart of Word Count Test: vmPages: %g, nBuffers: %g\n\n\n",

IO.int[vmPagesPerBuffer], IO.int[nBuffers]];

[charCount, wordCount, newLineCount] ← CountFile[in];

totalWordCount ← totalWordCount + wordCount;

totalLineCount ← totalLineCount + newLineCount;

in.Close[];

in ← NIL ;

IF verbose AND ~headerWritten THEN {

headerWritten ← TRUE;

dpy.PutF["Lines\tWords\t\tFile\n"];

};

dpy.PutF["%6d\t%6d\t\t%g\n\n\n", IO.int[newLineCount],

IO.int[wordCount], IO.rope[fileName]];

Finish ← BasicTime.Now[];

dpy.PutF["\n\n Seconds: %g\n", IO.int[BasicTime.Period[Start, Finish]]];

EXITS

openFailed => dpy.PutF["Could not open \"%g\"\n\n\n", IO.rope[fileName]];

};

CountFile: PROC[ file: IO.STREAM ]

RETURNS [ charCount: INT ← 0, wordCount: INT ← 0, newLineCount: INT ← 0 ] = {

Counts the number of words in the indicated stream.

State: TYPE = { inWord, inJunk, oneNull };

state: State ← inJunk;

DO c: CHAR ← IO.GetChar[file ! IO.EndOfStream => GOTO eof];

SELECT c FROM

IN ['0..'9], IN ['A..'Z], IN ['a..'z] => IF state ~= inWord THEN {

state ← inWord;

wordCount ← wordCount + 1;

};

= 0C => IF state = oneNull THEN EXIT ELSE state ← oneNull;

ENDCASE => {

state ← inJunk;

IF c = '\n THEN newLineCount ← newLineCount + 1;

};

charCount ← charCount + 1;

REPEAT

eof => NULL;

ENDLOOP;

};

TypeAFile: PROC[fileName: ROPE] = {

readStream: IO.STREAM ← StreamOpen[fileName: fileName];

DO c: CHAR ← IO.GetChar[readStream ! IO.EndOfStream => GOTO eof];

dpy.PutF["%g",IO.char[c]];

REPEAT

eof => NULL;

ENDLOOP;

};

Chase Buffers - test parallel buffering logic

ChaseBuffers: PROC[fileName: ROPE, vmPagesPerBuffer: INT [1 .. 128], nBuffers: INT [1 .. 4],

readPause: INT ← 2, writePause: INT ← 1]= {

Creates a reader process to chase a writer process through 1,000,000 bytes of output.

randomStream: RAN.RandomStream;

Start: BasicTime.GMT ← BasicTime.Now[];

Finish: BasicTime.GMT ;

biggie: CARDINAL ;

writeStream: IO.STREAM ← StreamOpen[fileName: fileName, accessOptions: $create,

streamBufferParms: [vmPagesPerBuffer: vmPagesPerBuffer, nBuffers: nBuffers ] ];

process: PROCESS ;

FilePos ← 0 ;

CatchCount ← 0 ;

dpy.PutF["\n\n\n\nStart of Chase Buffers test: vmPages: %g, nBuffers: %g\n",

IO.int[vmPagesPerBuffer], IO.int[nBuffers]];

dpy.PutF[" readPause: %g, writePause: %g\n\n\n",

IO.int[readPause], IO.int[writePause]];

process ← FORK readprocess[writeStream,readPause];

randomStream ← RAN.Create[seed: randomSeed];

UNTIL FilePos >= chaseCount DO

fill: INT ;

fill ← randomStream.ChooseInt[min: 1, max: 311];

biggie ← FilePos MOD 127 ;

FOR i:INT IN [1..fill] DO

char: CHAR ;

TRUSTED {char ← LOOPHOLE[I.LowByte[biggie]] ;};

IF StopChase THEN Alarm[];

writeStream.PutChar[ char ];

FilePos ← FilePos + 1;

IF (biggie ← biggie + 1 ) >= 127 THEN biggie ← 0 ;

ENDLOOP;

IF FilePos >= chaseCount THEN { IF StopChase THEN Alarm[]; };

IF fill < 13 AND writePause > 0 THEN Process.Pause[writePause];

ENDLOOP;

IF NOT writeStream.EndOf THEN Alarm[];

writeStream.Flush[];

writeStream.Close[];

writeStream ← NIL ;

dpy.PutF["\nAbout to JOIN\n"];

TRUSTED {JOIN process ;};

Finish ← BasicTime.Now[];

dpy.PutF["\n\n Seconds: %g\n", IO.int[BasicTime.Period[Start, Finish]]];

dpy.PutF["\nRead Process caught writer %g times\nEnd of Chase Buffers test\n",

IO.int[CatchCount]];

};

readprocess: PROC [ writestream: IO.STREAM , readPause: INT] = {

myPos: INT ← 0 ;

dupMyPos: INT ← 0 ;

dupFilePos: INT ;

biggie: CARDINAL ← 0 ;

readStream: IO.STREAM ← FS.StreamFromOpenStream[writestream];

readStream.SetIndex[0];

IF readStream.CharsAvail <= 0 THEN {StopChase ← TRUE; Alarm[]};

WHILE myPos < chaseCount DO

dupFilePos ← FilePos ;

IF myPos = FilePos THEN {

CatchCount ← CatchCount + 1 ;

IF readPause > 0 THEN Process.Pause[readPause];

}

ELSE {

readChar, char: CHAR ;

TRUSTED {char ← LOOPHOLE[I.LowByte[biggie]] ;};

IF readStream.EndOf THEN Alarm[];

readChar ← readStream.GetChar[! IO.EndOfStream => {StopChase ← TRUE; Alarm[]} ];

myPos ← myPos + 1 ;

dupMyPos ← dupMyPos + 1 ;

IF myPos # dupMyPos THEN {StopChase ← TRUE; Alarm[]} ;

IF readChar # char THEN Alarm[] ;

IF (biggie ← biggie + 1 ) >= 127 THEN biggie ← 0 ;

};

ENDLOOP;

myPos ← chaseCount-1 ;

biggie ← myPos MOD 127 ;

WHILE myPos > (chaseCount-backupChaseCount) DO

char: CHAR ;

TRUSTED {char ← LOOPHOLE[I.LowByte[biggie]] ;};

readStream.Backup[char: char];

myPos ← myPos - 1 ;

IF (biggie = 0 ) THEN biggie ← 126 ELSE biggie ← biggie - 1 ;

IF readStream.EndOf THEN Alarm[];

ENDLOOP;

readStream.Reset[];

IF NOT readStream.EndOf THEN Alarm[];

readStream.Close[];

readStream← NIL ;

};

DropSomeStreams: PROC[fileName1: ROPE, fileName2: ROPE] = {

writeStream1, readStream1, writeStream2: IO.STREAM ;

dpy.PutF["\n\nStart of DropSomeStreams test:"];

writeStream1 ← StreamOpen[fileName: fileName1, accessOptions: $create];

readStream1 ← FS.StreamFromOpenStream[writeStream1];

writeStream2 ← StreamOpen[fileName: fileName2, accessOptions: $create];

writeStream1 ← NIL ;

readStream1 ← NIL ;

writeStream2 ← NIL ;

dpy.PutF["\n\nEnd of DropSomeStreams test:"];

};

extendCount: INT ← 0 ;

didExtend: BOOL ← FALSE ;

extendSize: ARRAY [1 .. 6] OF INT ←

[ 5120+512, 10240, 10240+512, 20480, 20480, 1048576+512] ;

myExtend: INT ← 0 ;

extend: SAFE PROC [ count: FS.ByteCount] RETURNS [FS.ByteCount] = TRUSTED {

IF extendCount < 6 THEN extendCount ← extendCount + 1 ;

didExtend ← TRUE ;

myExtend ← extendSize[extendCount];

RETURN[extendSize[extendCount]]

};

ExtendFileTest: PROC[fileName: ROPE,

vmPagesPerBuffer: INT [1 .. 128] ← 4 , nBuffers: INT [1 .. 4] ← 2 ,

vmPagesPerWrite: INT [1 .. 128] ← 4 ] = {

bytesLeft: INT ← 1048576 ;

bytesPerFilePage: INT = FS.BytesForPages[1];

unsafeDataBlock: I.UnsafeBlock ;

UnsafeBlockInterval: VM.Interval;

writeStream: IO.STREAM ;

writeFile: FS.OpenFile ;

Start: BasicTime.GMT ;

Finish: BasicTime.GMT ;

startReadFileData, startWriteFileData, finishReadFileData, finishWriteFileData: FileStats.Data ;

dpy.PutF["\n\nStart of extend file test:"];

dpy.PutF["\n vmPages: %g, nBuffers: %g, pagesPerWrite %g\n",

IO.int[vmPagesPerBuffer], IO.int[nBuffers], IO.int[vmPagesPerWrite] ];

UnsafeBlockInterval ← VM.Allocate[count: vmPagesPerWrite];

unsafeDataBlock.base ← VM.AddressForPageNumber[UnsafeBlockInterval.page];

unsafeDataBlock.count ← vmPagesPerWrite*bytesPerFilePage;

startReadFileData ← FileStats.GetData[read];

startWriteFileData ← FileStats.GetData[write];

Start ← BasicTime.Now[];

writeStream ← StreamOpen[fileName: fileName, accessOptions: $create,

streamBufferParms: [vmPagesPerBuffer: vmPagesPerBuffer, nBuffers: nBuffers ] ,

createByteCount: 5120,

extendFileProc: extend ];

writeFile ← FS.OpenFileFromStream[writeStream];

WHILE bytesLeft > 0 DO

writeStream.UnsafePutBlock[unsafeDataBlock];

IF didExtend THEN {

pageAllocation: VM.PageNumber;

byteLength: FS.ByteCount ;

didExtend ← FALSE ;

[pages: pageAllocation, bytes: byteLength] ← writeFile.GetInfo[];

dpy.PutF["\n Extend to : %g pageAllocation %g, byteLength %g",

IO.int[myExtend], IO.int[pageAllocation], IO.int[byteLength] ];

};

bytesLeft ← bytesLeft - unsafeDataBlock.count ;

ENDLOOP;

writeStream.Close[];

writeStream ← NIL ;

Finish ← BasicTime.Now[];

finishReadFileData ← FileStats.GetData[read];

finishWriteFileData ← FileStats.GetData[write];

TRUSTED{VM.Free[UnsafeBlockInterval]};

dpy.PutF["\n\n Seconds: %g File reads %g pages %g, Writes %g pages %g\n",

IO.int[BasicTime.Period[Start, Finish]],

IO.int[finishReadFileData.calls-startReadFileData.calls],

IO.int[finishReadFileData.pages-startReadFileData.pages],

IO.int[finishWriteFileData.calls-startWriteFileData.calls],

IO.int[finishWriteFileData.pages-startWriteFileData.pages]

];

dpy.PutF[" reads/sec %g, writes/sec %g\n",

IO.int[ (finishReadFileData.calls-startReadFileData.calls)/BasicTime.Period[Start, Finish]],

IO.int[ (finishWriteFileData.calls-startWriteFileData.calls)/BasicTime.Period[Start, Finish]] ];

dpy.PutF["\nEnd of extend file test\n"];

};

WriteAMegabyte: PROC[fileName: ROPE,

vmPagesPerBuffer: INT [1 .. 128], nBuffers: INT [1 .. 4], vmPagesPerWrite: INT [1 .. 128]] = {

extend: SAFE PROC [ count: FS.ByteCount] RETURNS [FS.ByteCount] = TRUSTED {

RETURN[count + 20480]

};

Start: BasicTime.GMT ;

Finish: BasicTime.GMT ;

startPulse: BasicTime.Pulses ;

endPulse: BasicTime.Pulses ;

requestNo: INT ;

microsecondsPerRequest: ARRAY [1..100] OF INT ;

startReadFileData, startWriteFileData, finishReadFileData, finishWriteFileData: FileStats.Data ;

bytesLeft: INT ← 1048576 ;

bytesPerFilePage: INT = FS.BytesForPages[1];

unsafeDataBlock: I.UnsafeBlock ;

UnsafeBlockInterval: VM.Interval;

writeStream: IO.STREAM ;

dpy.PutF["\n\nStart of write megabyte test:"];

dpy.PutF["\n vmPages: %g, nBuffers: %g, pagesPerWrite %g\n",

IO.int[vmPagesPerBuffer], IO.int[nBuffers], IO.int[vmPagesPerWrite] ];

UnsafeBlockInterval ← VM.Allocate[count: vmPagesPerWrite];

unsafeDataBlock.base ← VM.AddressForPageNumber[UnsafeBlockInterval.page];

unsafeDataBlock.count ← vmPagesPerWrite*bytesPerFilePage;

startReadFileData ← FileStats.GetData[read];

startWriteFileData ← FileStats.GetData[write];

Start ← BasicTime.Now[];

writeStream ← StreamOpen[fileName: fileName, accessOptions: $create,

streamBufferParms: [vmPagesPerBuffer: vmPagesPerBuffer, nBuffers: nBuffers ] ,

createByteCount: 1048576 ];

requestNo ← 1 ;

startPulse ← BasicTime.GetClockPulses[] ;

WHILE bytesLeft > 0 DO

writeStream.UnsafePutBlock[unsafeDataBlock];

endPulse ← BasicTime.GetClockPulses[] ;

IF requestNo <= 100 THEN {

microsecondsPerRequest[requestNo] ←

BasicTime.PulsesToMicroseconds[endPulse - startPulse] ;

startPulse ← endPulse ;

requestNo ← requestNo + 1 ;

};

bytesLeft ← bytesLeft - unsafeDataBlock.count ;

ENDLOOP;

writeStream.Close[];

writeStream ← NIL ;

Finish ← BasicTime.Now[];

finishReadFileData ← FileStats.GetData[read];

finishWriteFileData ← FileStats.GetData[write];

TRUSTED{VM.Free[UnsafeBlockInterval]};

dpy.PutF["\n\n Seconds: %g File reads %g pages %g, Writes %g pages %g\n",

IO.int[BasicTime.Period[Start, Finish]],

IO.int[finishReadFileData.calls-startReadFileData.calls],

IO.int[finishReadFileData.pages-startReadFileData.pages],

IO.int[finishWriteFileData.calls-startWriteFileData.calls],

IO.int[finishWriteFileData.pages-startWriteFileData.pages]

];

dpy.PutF[" reads/sec %g, writes/sec %g\n",

IO.int[ (finishReadFileData.calls-startReadFileData.calls)/BasicTime.Period[Start, Finish]],

IO.int[ (finishWriteFileData.calls-startWriteFileData.calls)/BasicTime.Period[Start, Finish]] ];

FOR requestNo IN [1..100] DO

IF requestNo MOD 10 = 1 THEN dpy.PutF["%g-%g: ",IO.int[requestNo],

IO.int[requestNo+9]];

dpy.PutF["%g ",IO.int[microsecondsPerRequest[requestNo]]];

IF requestNo MOD 10 = 0 THEN dpy.PutF["\n"];

ENDLOOP;

dpy.PutF["\nEnd of WriteAMegabyte\n"];

};

ReadAMegabyte: PROC[fileName: ROPE, pause: INT,

vmPagesPerBuffer: INT [1 .. 128], nBuffers: INT [1 .. 4], vmPagesPerRead: INT [1 .. 128]] = {

randomStream: RAN.RandomStream;

Start: BasicTime.GMT ;

Finish: BasicTime.GMT ;

startReadFileData, startWriteFileData, finishReadFileData, finishWriteFileData: FileStats.Data ;

bytesLeft: INT ← 1048576 ;

readCount: INT ;

realOne: REAL ← Real.PairToReal[1,0];

microsecondsPerRequest: ARRAY [1..100] OF INT ;

requestNo: INT ;

startPulse: BasicTime.Pulses ;

endPulse: BasicTime.Pulses ;

bytesPerFilePage: INT = FS.BytesForPages[1];

unsafeDataBlock: I.UnsafeBlock ;

UnsafeBlockInterval: VM.Interval;

readStream: IO.STREAM ;

randomStream ← RAN.Create[seed: randomSeed];

dpy.PutF["\n\nStart of read megabyte test:"];

dpy.PutF["\n pause %g, vmPages: %g, nBuffers: %g, pagesPerRead %g\n",

IO.int[pause], IO.int[vmPagesPerBuffer], IO.int[nBuffers], IO.int[vmPagesPerRead] ];

UnsafeBlockInterval ← VM.Allocate[count: vmPagesPerRead];

unsafeDataBlock.base ← VM.AddressForPageNumber[UnsafeBlockInterval.page];

unsafeDataBlock.count ← vmPagesPerRead*bytesPerFilePage;

startReadFileData ← FileStats.GetData[read];

startWriteFileData ← FileStats.GetData[write];

Start ← BasicTime.Now[];

readStream ← StreamOpen[fileName: fileName, accessOptions: $read,

streamBufferParms: [vmPagesPerBuffer: vmPagesPerBuffer, nBuffers: nBuffers ] ];

readCount ← unsafeDataBlock.count ;

requestNo ← 1 ;

startPulse ← BasicTime.GetClockPulses[] ;

WHILE bytesLeft > 0 DO

IF pause >= 0 THEN readCount ← readStream.UnsafeGetBlock[unsafeDataBlock];

endPulse ← BasicTime.GetClockPulses[] ;

IF requestNo <= 100 THEN {

microsecondsPerRequest[requestNo] ←

BasicTime.PulsesToMicroseconds[endPulse - startPulse] ;

startPulse ← endPulse ;

requestNo ← requestNo + 1 ;

};

IF readCount # unsafeDataBlock.count AND unsafeDataBlock.count <= bytesLeft

THEN Alarm[];

bytesLeft ← bytesLeft - unsafeDataBlock.count ;

IF pause # 0 THEN {

zc, nzc: INT ← 0 ;

FOR I: INT IN [0..readCount) DO

IF unsafeDataBlock.base[I] = 0 THEN zc ← zc +1 ELSE nzc ← nzc + 1;

IF randomStream.NextInt[] = zc THEN zc ← zc + 1 ;

IF zc = 0 THEN zc ← 1 ;

IF zc # 0 THEN nzc ← nzc / zc ;

IF (I MOD 64) = 0 THEN realOne ← Real.SqRt[realOne];

ENDLOOP;

Process.Pause[pause]

}

ELSE IF pause < 0 THEN Process.Pause[-pause];

ENDLOOP;

readStream.Close[];

readStream ← NIL ;

Finish ← BasicTime.Now[];

finishReadFileData ← FileStats.GetData[read];

finishWriteFileData ← FileStats.GetData[write];

TRUSTED{VM.Free[UnsafeBlockInterval]};

dpy.PutF["\n\n Seconds: %g File reads %g pages %g, Writes %g pages %g\n",

IO.int[BasicTime.Period[Start, Finish]],

IO.int[finishReadFileData.calls-startReadFileData.calls],

IO.int[finishReadFileData.pages-startReadFileData.pages],

IO.int[finishWriteFileData.calls-startWriteFileData.calls],

IO.int[finishWriteFileData.pages-startWriteFileData.pages]

];

dpy.PutF[" reads/sec %g, writes/sec %g\n",

IO.int[ (finishReadFileData.calls-startReadFileData.calls)/BasicTime.Period[Start, Finish]],

IO.int[ (finishWriteFileData.calls-startWriteFileData.calls)/BasicTime.Period[Start, Finish]] ];

dpy.PutF["Times to do request\n"];

FOR requestNo IN [1..100] DO

IF requestNo MOD 10 = 1 THEN dpy.PutF["%g-%g: ",IO.int[requestNo],

IO.int[requestNo+9]];

dpy.PutF["%g ",IO.int[microsecondsPerRequest[requestNo]]];

IF requestNo MOD 10 = 0 THEN dpy.PutF["\n"];

ENDLOOP;

dpy.PutF["\nEnd of ReadAMegabyte\n"];

};

WriteAMegabyteWithPattern: PROC[fileName: ROPE,

vmPagesPerBuffer: INT [1 .. 128], nBuffers: INT [1 .. 4], vmPagesPerWrite: INT [1 .. 1024]] = {

extend: SAFE PROC [ count: FS.ByteCount] RETURNS [FS.ByteCount] = TRUSTED {

RETURN[count + 20480]

};

Start: BasicTime.GMT ;

Finish: BasicTime.GMT ;

startReadFileData, startWriteFileData, finishReadFileData, finishWriteFileData: FileStats.Data ;

bytesLeft: INT ← 1048576 ;

bytesPerFilePage: INT = FS.BytesForPages[1];

unsafeDataBlock: I.UnsafeBlock ;

UnsafeBlockInterval: VM.Interval;

writeStream: IO.STREAM ;

dpy.PutF["\n\nStart of write megabyte with pattern test:"];

dpy.PutF["\n vmPages: %g, nBuffers: %g, pagesPerWrite %g\n",

IO.int[vmPagesPerBuffer], IO.int[nBuffers], IO.int[vmPagesPerWrite] ];

UnsafeBlockInterval ← VM.Allocate[count: vmPagesPerWrite];

unsafeDataBlock.base ← VM.AddressForPageNumber[UnsafeBlockInterval.page];

unsafeDataBlock.count ← vmPagesPerWrite*bytesPerFilePage;

startReadFileData ← FileStats.GetData[read];

startWriteFileData ← FileStats.GetData[write];

Start ← BasicTime.Now[];

writeStream ← StreamOpen[fileName: fileName, accessOptions: $create,

streamBufferParms: [vmPagesPerBuffer: vmPagesPerBuffer, nBuffers: nBuffers ] ,

createByteCount: 1048576 ];

WHILE bytesLeft > 0 DO

byteNo: INT ← 1048576 - bytesLeft ;

biggie: CARDINAL ← byteNo MOD 127 ;

charNo: INT ;

charNo ← 0 ;

FOR requestNo: INT IN [0..unsafeDataBlock.count) DO

char: CHAR ;

TRUSTED {char ← LOOPHOLE[I.LowByte[biggie]] ;};

IF charNo >= 1024 THEN {

charNo ← charNo - 1024;

unsafeDataBlock.base ← unsafeDataBlock.base + 512 ;

};

unsafeDataBlock.base[charNo] ← LOOPHOLE[char] ;

byteNo ← byteNo + 1 ;

IF (biggie ← biggie + 1 ) >= 127 THEN biggie ← 0 ;

charNo ← charNo + 1 ;

ENDLOOP;

unsafeDataBlock.base ← VM.AddressForPageNumber[UnsafeBlockInterval.page];

writeStream.UnsafePutBlock[unsafeDataBlock];

bytesLeft ← bytesLeft - unsafeDataBlock.count ;

ENDLOOP;

writeStream.Close[];

writeStream ← NIL ;

Finish ← BasicTime.Now[];

finishReadFileData ← FileStats.GetData[read];

finishWriteFileData ← FileStats.GetData[write];

TRUSTED{VM.Free[UnsafeBlockInterval]};

dpy.PutF["\n\n Seconds: %g File reads %g pages %g, Writes %g pages %g\n",

IO.int[BasicTime.Period[Start, Finish]],

IO.int[finishReadFileData.calls-startReadFileData.calls],

IO.int[finishReadFileData.pages-startReadFileData.pages],

IO.int[finishWriteFileData.calls-startWriteFileData.calls],

IO.int[finishWriteFileData.pages-startWriteFileData.pages]

];

dpy.PutF[" reads/sec %g, writes/sec %g\n",

IO.int[ (finishReadFileData.calls-startReadFileData.calls)/BasicTime.Period[Start, Finish]],

IO.int[ (finishWriteFileData.calls-startWriteFileData.calls)/BasicTime.Period[Start, Finish]] ];

dpy.PutF["\nEnd of WriteAMegabyteWithPattern\n"];

};

ReadAMegabyteWithPattern: PROC[fileName: ROPE, pause: INT,

vmPagesPerBuffer: INT [1 .. 128], nBuffers: INT [1 .. 4], vmPagesPerRead: INT [1 .. 1024]] = {

Start: BasicTime.GMT ;

Finish: BasicTime.GMT ;

startReadFileData, startWriteFileData, finishReadFileData, finishWriteFileData: FileStats.Data ;

bytesLeft: INT ← 1048576 ;

byteNo: INT ← 0 ;

readCount: INT ;

errorCount: INT ← 0 ;

requestNo: INT ;

biggie: CARDINAL ;

bytesPerFilePage: INT = FS.BytesForPages[1];

unsafeDataBlock: I.UnsafeBlock ;

UnsafeBlockInterval: VM.Interval;

readStream: IO.STREAM ;

dpy.PutF["\n\nStart of read megabyte with pattern test:"];

dpy.PutF["\n pause %g, vmPages: %g, nBuffers: %g, pagesPerRead %g\n",

IO.int[pause], IO.int[vmPagesPerBuffer], IO.int[nBuffers], IO.int[vmPagesPerRead] ];

UnsafeBlockInterval ← VM.Allocate[count: vmPagesPerRead];

unsafeDataBlock.base ← VM.AddressForPageNumber[UnsafeBlockInterval.page];

unsafeDataBlock.count ← vmPagesPerRead*bytesPerFilePage;

startReadFileData ← FileStats.GetData[read];

startWriteFileData ← FileStats.GetData[write];

Start ← BasicTime.Now[];

readStream ← StreamOpen[fileName: fileName, accessOptions: $read,

streamBufferParms: [vmPagesPerBuffer: vmPagesPerBuffer, nBuffers: nBuffers ] ];

readCount ← unsafeDataBlock.count ;

requestNo ← 1 ;

WHILE bytesLeft > 0 DO

charNo: INT ;

IF pause >= 0 THEN readCount ← readStream.UnsafeGetBlock[unsafeDataBlock];

IF readCount # unsafeDataBlock.count AND unsafeDataBlock.count <= bytesLeft

THEN Alarm[];

biggie ← byteNo MOD 127 ;

charNo ← 0 ;

FOR requestNo: INT IN [0..readCount) DO

char: CHAR ;

TRUSTED {char ← LOOPHOLE[I.LowByte[biggie]] ;};

IF charNo >= 1024 THEN {

charNo ← charNo - 1024;

unsafeDataBlock.base ← unsafeDataBlock.base + 512 ;

};

IF unsafeDataBlock.base[charNo] # LOOPHOLE[char] THEN {

dpy.PutF["\n >>>> byte %g, was : %g, should be: %g",

IO.int[byteNo], IO.char[LOOPHOLE[unsafeDataBlock.base[charNo]]], IO.char[char]];

errorCount ← errorCount + 1 ;

IF errorCount > 20 THEN bytesLeft ← 0 ;

};

byteNo ← byteNo + 1 ;

IF (biggie ← biggie + 1 ) >= 127 THEN biggie ← 0 ;

charNo ← charNo + 1 ;

ENDLOOP;

unsafeDataBlock.base ← VM.AddressForPageNumber[UnsafeBlockInterval.page];

bytesLeft ← bytesLeft - unsafeDataBlock.count ;

ENDLOOP;

readStream.Close[];

readStream ← NIL ;

Finish ← BasicTime.Now[];

finishReadFileData ← FileStats.GetData[read];

finishWriteFileData ← FileStats.GetData[write];

TRUSTED{VM.Free[UnsafeBlockInterval]};

dpy.PutF["\n\n Seconds: %g File reads %g pages %g, Writes %g pages %g\n",

IO.int[BasicTime.Period[Start, Finish]],

IO.int[finishReadFileData.calls-startReadFileData.calls],

IO.int[finishReadFileData.pages-startReadFileData.pages],

IO.int[finishWriteFileData.calls-startWriteFileData.calls],

IO.int[finishWriteFileData.pages-startWriteFileData.pages]

];

dpy.PutF[" reads/sec %g, writes/sec %g\n",

IO.int[ (finishReadFileData.calls-startReadFileData.calls)/BasicTime.Period[Start, Finish]],

IO.int[ (finishWriteFileData.calls-startWriteFileData.calls)/BasicTime.Period[Start, Finish]] ];

dpy.PutF["Times to do request\n"];

dpy.PutF["\nEnd of ReadAMegabyteWithPattern\n"];

};

nullFinalizationProc: FileStream.FinalizationProc = TRUSTED {

dpy.PutF["\nnullFinalizationProc got called:"];

};

ErrorTests: PROC[fileName: ROPE] = {

writeStream: IO.STREAM ;

hitEOF: BOOL ;

dpy.PutF["\n\nStart of error tests:"];

writeStream ← StreamOpen[fileName: fileName, accessOptions: $create,

streamBufferParms: [vmPagesPerBuffer: 4, nBuffers: 2 ] ,

createByteCount: 40000 ];

FOR I:INT IN [0 .. 55) DO

writeStream.PutChar[0C];

ENDLOOP;

hitEOF ← FALSE ;

[] ← writeStream.GetChar[! IO.EndOfStream => {hitEOF ← TRUE ; CONTINUE;}];

IF NOT hitEOF THEN { dpy.PutF["\n OOPS: should have hit eof\n"];};

IF FileStream.ErrorFromStream[ writeStream ] # [ok, NIL, NIL] THEN

{ dpy.PutF["\n OOPS: should have NIL error at first\n"];};

FileStream.SaveStreamError[self: writeStream, error: [bug, NIL, "Some rope"]];

IF FileStream.ErrorFromStream[ writeStream ] = [ok, NIL, NIL] THEN

{ dpy.PutF["\n OOPS: should have NON-NIL error later\n"];};

IF fileSystem=local THEN

BEGIN

IF FileStream.GetStreamClassData[ writeStream ] # NIL THEN

{ dpy.PutF["\n OOPS: should have NIL class data at first\n"];};

FileStream.SetStreamClassData[self: writeStream, data: writeStream];

IF FileStream.GetStreamClassData[ writeStream ] = NIL THEN

{ dpy.PutF["\n OOPS: should have NON-NIL error later\n"];};

FileStream.SetStreamClassData[self: writeStream, data: NIL];

IF FileStream.GetFinalizationProc[ writeStream ] # NIL THEN

{ dpy.PutF["\n OOPS: should have NIL FinalizationProc at first\n"];};

FileStream.SetFinalizationProc[self: writeStream, proc: nullFinalizationProc];

IF FileStream.GetFinalizationProc[ writeStream ] = NIL THEN

{ dpy.PutF["\n OOPS: should have NON-NIL FinalizationProc later\n"];};

END;

[] ← FileStream.OpenFileFromStream[ writeStream ];

writeStream.Close[];

dpy.PutF["\nEnd of error tests:"];

};

StreamOpen: PUBLIC SAFE PROC [fileName: ROPE, accessOptions: FS.AccessOptions ← $read, createByteCount: FS.ByteCount ← 2560, streamBufferParms: FS.StreamBufferParms ← FS.defaultStreamBufferParms, extendFileProc: FS.ExtendFileProc ← NIL] RETURNS [STREAM] = CHECKED

BEGIN

RETURN [SELECT fileSystem FROM

local => FS.StreamOpen[fileName: fileName, accessOptions: accessOptions, createByteCount: createByteCount, streamBufferParms: streamBufferParms, extendFileProc: extendFileProc],

alpine => AlpineFS.StreamOpen[name: Rope.Cat[fileNamePrefix, fileName], accessOptions: accessOptions, createByteCount: createByteCount, streamBufferParms: streamBufferParms, extendFileProc: extendFileProc],

ENDCASE => ERROR]

END;

RunReadForever: PROC = {

WriteAMegabyteWithPattern["AMegabyte.file", 8, 2, 8];

ReadAMegabyteWithPattern["AMegabyte.file", 0, 4, 2, 4];

ENDLOOP;

};

RunTests: PROC = {

the tests

ErrorTests["FileStreamTest.file"];

WriteAMegabyte["AMegabyte.file", 32, 2, 4];

ReadAMegabyte["AMegabyte.file", 0, 1, 1, 1];

ReadAMegabyte["AMegabyte.file", 0, 1, 2, 1];

ReadAMegabyte["AMegabyte.file", 0, 1, 3, 1];

ReadAMegabyte["AMegabyte.file", 0, 1, 4, 1];

ReadAMegabyte["AMegabyte.file", 1, 1, 1, 1];

ReadAMegabyte["AMegabyte.file", -1, 1, 1, 1];

ReadAMegabyte["AMegabyte.file", 1, 1, 2, 1];

-- ReadAMegabyte["AMegabyte.file", 1, 2, 1, 2];

-- ReadAMegabyte["AMegabyte.file", 1, 2, 2, 2];

-- ReadAMegabyte["AMegabyte.file", 1, 4, 1, 4];

-- ReadAMegabyte["AMegabyte.file", 1, 4, 2, 4];

-- ReadAMegabyte["AMegabyte.file", 1, 8, 1, 8];

-- ReadAMegabyte["AMegabyte.file", 1, 8, 2, 8];

-- ReadAMegabyte["AMegabyte.file", 1, 16, 2, 16];

DropSomeStreams["DropStream1.file", "DropStream2.file"] ;

ExtendFileTest[fileName: "extendA.file"];

WriteAMegabyte["AMegabyte.file", 1, 1, 1];

WriteAMegabyte["AMegabyte.file", 1, 2, 1];

WriteAMegabyte["AMegabyte.file", 1, 3, 1];

WriteAMegabyte["AMegabyte.file", 1, 4, 1];

WriteAMegabyte["AMegabyte.file", 1, 3, 32];

WriteAMegabyte["AMegabyte.file", 2, 2, 2];

WriteAMegabyte["AMegabyte.file", 4, 2, 1];

WriteAMegabyte["AMegabyte.file", 4, 2, 4];

WriteAMegabyte["AMegabyte.file", 8, 4, 2];

WriteAMegabyte["AMegabyte.file", 16, 1, 1];

WriteAMegabyte["AMegabyte.file", 16, 2, 1];

WriteAMegabyte["AMegabyte.file", 16, 2, 16];

WriteAMegabyte["AMegabyte.file", 16, 2, 32];

WriteAMegabyte["AMegabyte.file", 32, 2, 4];

ReadAMegabyte["AMegabyte.file", 0, 32, 2, 4];

WriteAMegabyteWithPattern["AMegabyte.file", 8, 2, 8];