pjs/netwerk/test/TestWriteStream.cpp

209 строки
5.5 KiB
C++
Исходник Обычный вид История

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "nsIFileTransportService.h"
#include "nsIChannel.h"
#include "nsIServiceManager.h"
#include "nsIComponentManager.h"
#include "nsCOMPtr.h"
#include "nsIAllocator.h"
#include "nsString.h"
#include "nsIFileStream.h"
#include "nsIStreamListener.h"
#include "nsIEventQueueService.h"
#include "nsIEventQueue.h"
#include "nsILocalFile.h"
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#include "plhash.h"
static NS_DEFINE_CID(kFileTransportServiceCID, NS_FILETRANSPORTSERVICE_CID);
////////////////////////////////////////////////////////////////////////////////
// A supply of stream data to either store or compare with
class nsITestDataStream {
public:
virtual ~nsITestDataStream() {};
virtual PRUint32 Next() = 0;
virtual void Read(char* aBuf, PRUint32 aCount) = 0;
virtual PRBool Match(char* aBuf, PRUint32 aCount) = 0;
virtual void Skip(PRUint32 aCount) = 0;
};
// A reproducible stream of random data.
class RandomStream : public nsITestDataStream {
public:
RandomStream(PRUint32 aSeed) {
mStartSeed = mState = aSeed;
}
PRUint32 GetStartSeed() {
return mStartSeed;
}
PRUint32 Next() {
mState = 1103515245 * mState + 12345;
return mState;
}
void Read(char* aBuf, PRUint32 aCount) {
PRUint32 i;
for (i = 0; i < aCount; i++) {
*aBuf++ = Next();
}
}
PRBool
Match(char* aBuf, PRUint32 aCount) {
PRUint32 i;
for (i = 0; i < aCount; i++) {
if (*aBuf++ != (char)(Next() & 0xff))
return PR_FALSE;
}
return PR_TRUE;
}
void
Skip(PRUint32 aCount) {
while (aCount--)
Next();
}
protected:
PRUint32 mState;
PRUint32 mStartSeed;
};
PRIntervalTime gDuration;
PRUint32 gTotalBytesWritten = 0;
////////////////////////////////////////////////////////////////////////////////
nsresult
TestSyncWrite(char* filename, PRUint32 startPosition, PRInt32 length)
{
nsresult rv;
nsCOMPtr<nsIOutputStream> outStream ;
RandomStream *randomStream;
char buf[500];
NS_WITH_SERVICE(nsIFileTransportService, fts, kFileTransportServiceCID, &rv) ;
if (NS_FAILED(rv)) return rv ;
nsCOMPtr<nsILocalFile> fs;
rv = NS_NewLocalFile(filename, getter_AddRefs(fs));
if (NS_FAILED(rv)) return rv ;
nsCOMPtr<nsIChannel> transport;
rv = fts->CreateTransport(fs, PR_RDWR | PR_CREATE_FILE, 0664,
getter_AddRefs(transport)) ;
if (NS_FAILED(rv)) return rv ;
rv = transport->SetTransferOffset(startPosition);
if (NS_FAILED(rv)) return rv;
rv = transport->OpenOutputStream(getter_AddRefs(outStream)) ;
if (NS_FAILED(rv)) return rv;
PRIntervalTime startTime = PR_IntervalNow();
randomStream = new RandomStream(PL_HashString(filename));
int remaining = length;
while (remaining) {
PRUint32 numWritten;
int amount = PR_MIN(sizeof buf, remaining);
randomStream->Read(buf, amount);
rv = outStream->Write(buf, amount, &numWritten);
NS_ASSERTION(NS_SUCCEEDED(rv), " ");
NS_ASSERTION(numWritten == (PRUint32)amount, "Write() bug?");
remaining -= amount;
}
outStream->Close();
gTotalBytesWritten += length;
PRIntervalTime endTime = PR_IntervalNow();
gDuration += (endTime - startTime);
delete randomStream;
return NS_OK;
}
#define MAX_FILES_TO_WRITE 15
nsresult
TestSyncWrites(char* filenamePrefix, PRUint32 startPosition, PRInt32 length)
{
char filename[100];
int test;
nsresult rv;
for (test = 0; test < MAX_FILES_TO_WRITE; test++) {
sprintf(filename, "%s_%d", filenamePrefix, test);
rv = TestSyncWrite(filename, startPosition, length);
if (NS_FAILED(rv)) return rv;
}
double rate = gTotalBytesWritten / PR_IntervalToMilliseconds(gDuration);
rate *= 1000;
rate /= (1024 * 1024);
printf("Wrote %7d bytes at a rate of %6.2f MB per second \n",
gTotalBytesWritten, rate);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
nsresult
NS_AutoregisterComponents()
{
nsresult rv = nsComponentManager::AutoRegister(nsIComponentManager::NS_Startup, NULL /* default */);
return rv;
}
int
main(int argc, char* argv[])
{
nsresult rv;
if (argc < 3) {
printf("usage: %s <file-prefix-to-write> <num-bytes>\n", argv[0]);
return -1;
}
char* fileName = argv[1];
int length = atoi(argv[2]);
rv = NS_AutoregisterComponents();
if (NS_FAILED(rv)) return rv;
rv = TestSyncWrites(fileName, 0, length);
NS_ASSERTION(NS_SUCCEEDED(rv), "TestAsyncRead failed");
return NS_OK;
}