C++ PRInt64函数代码示例

void nsIndexedToHTML::FormatSizeString(PRInt64 inSize, nsString& outSizeString)
{
    outSizeString.Truncate();
    if (inSize > PRInt64(0)) {
        // round up to the nearest Kilobyte
        PRInt64  upperSize = (inSize + PRInt64(1023)) / PRInt64(1024);
        outSizeString.AppendInt(upperSize);
        outSizeString.AppendLiteral(" KB");
    }
}

void
nsIncrementalDownload::UpdateProgress()
{
  mLastProgressUpdate = PR_Now();

  if (mProgressSink)
    mProgressSink->OnProgress(this, mObserverContext,
                              PRUint64(PRInt64(mCurrentSize) + mChunkLen),
                              PRUint64(PRInt64(mTotalSize)));
}

nsresult
nsIncrementalDownload::ProcessTimeout()
{
  NS_ASSERTION(!mChannel, "how can we have a channel?");

  // Handle existing error conditions
  if (NS_FAILED(mStatus)) {
    CallOnStopRequest();
    return NS_OK;
  }

  // Fetch next chunk
  
  nsCOMPtr<nsIChannel> channel;
  nsresult rv = NS_NewChannel(getter_AddRefs(channel), mFinalURI, nsnull,
                              nsnull, this, mLoadFlags);
  if (NS_FAILED(rv))
    return rv;

  nsCOMPtr<nsIHttpChannel> http = do_QueryInterface(channel, &rv);
  if (NS_FAILED(rv))
    return rv;

  NS_ASSERTION(mCurrentSize != PRInt64(-1),
      "we should know the current file size by now");

  rv = ClearRequestHeader(http);
  if (NS_FAILED(rv))
    return rv;

  // Don't bother making a range request if we are just going to fetch the
  // entire document.
  if (mInterval || mCurrentSize != PRInt64(0)) {
    nsCAutoString range;
    MakeRangeSpec(mCurrentSize, mTotalSize, mChunkSize, mInterval == 0, range);

    rv = http->SetRequestHeader(NS_LITERAL_CSTRING("Range"), range, PR_FALSE);
    if (NS_FAILED(rv))
      return rv;
  }

  rv = channel->AsyncOpen(this, nsnull);
  if (NS_FAILED(rv))
    return rv;

  // Wait to assign mChannel when we know we are going to succeed.  This is
  // important because we don't want to introduce a reference cycle between
  // mChannel and this until we know for a fact that AsyncOpen has succeeded,
  // thus ensuring that our stream listener methods will be invoked.
  mChannel = channel;
  return NS_OK;
}

nsresult
nsOperaCookieMigrator::AddCookie(nsICookieManager2* aManager)
{
    // This is where we use the information gathered in all the other
    // states to add a cookie to the Firebird/Firefox Cookie Manager.
    nsCString domain;
    SynthesizeDomain(getter_Copies(domain));

    nsCString path;
    SynthesizePath(getter_Copies(path));

    mCookieOpen = PR_FALSE;

    nsresult rv = aManager->Add(domain,
                                path,
                                mCurrCookie.id,
                                mCurrCookie.data,
                                mCurrCookie.isSecure,
                                PR_FALSE, // isHttpOnly
                                PR_FALSE, // isSession
                                PRInt64(mCurrCookie.expiryTime));

    mCurrCookie.isSecure = 0;
    mCurrCookie.expiryTime = 0;

    return rv;
}

TimeDuration
TimeDuration::Resolution()
{
  // This is grossly nonrepresentative of actual system capabilities
  // on some platforms
  return TimeDuration::FromTicks(PRInt64(1));
}

TimeDuration
TimeDuration::Resolution()
{
  AutoCriticalSection lock(&sTimeStampLock);

  return TimeDuration::FromTicks(PRInt64(sResolution));
}

/*static*/ void
SharedMemory::Destroyed()
{
  NS_ABORT_IF_FALSE(gShmemAllocated >= PRInt64(mAllocSize),
                    "Can't destroy more than allocated");
  gShmemAllocated -= mAllocSize;
  mAllocSize = 0;
}

// maxSize may be -1 if unknown
static void
MakeRangeSpec(const PRInt64 &size, const PRInt64 &maxSize, PRInt32 chunkSize,
              PRBool fetchRemaining, nsCString &rangeSpec)
{
  rangeSpec.AssignLiteral("bytes=");
  rangeSpec.AppendInt(PRInt64(size));
  rangeSpec.Append('-');

  if (fetchRemaining)
    return;

  PRInt64 end = size + PRInt64(chunkSize);
  if (maxSize != PRInt64(-1) && end > maxSize)
    end = maxSize;
  end -= 1;

  rangeSpec.AppendInt(PRInt64(end));
}

NS_IMETHODIMP
nsInputStreamPump::Init(nsIInputStream *stream,
                        PRInt64 streamPos, PRInt64 streamLen,
                        PRUint32 segsize, PRUint32 segcount,
                        bool closeWhenDone)
{
    NS_ENSURE_TRUE(mState == STATE_IDLE, NS_ERROR_IN_PROGRESS);

    mStreamOffset = PRUint64(streamPos);
    if (PRInt64(streamLen) >= PRInt64(0))
        mStreamLength = PRUint64(streamLen);
    mStream = stream;
    mSegSize = segsize;
    mSegCount = segcount;
    mCloseWhenDone = closeWhenDone;

    return NS_OK;
}

static PRInt64 GetSoftPageFaults()
{
  struct rusage usage;
  int err = getrusage(RUSAGE_SELF, &usage);
  if (err != 0) {
    return PRInt64(-1);
  }

  return usage.ru_minflt;
}

static void
InitThresholds()
{
  DWORD timeAdjustment = 0, timeIncrement = 0;
  BOOL timeAdjustmentDisabled;
  GetSystemTimeAdjustment(&timeAdjustment,
                          &timeIncrement,
                          &timeAdjustmentDisabled);

  if (!timeIncrement)
    timeIncrement = kDefaultTimeIncrement;

  // Ceiling to a millisecond
  // Example values: 156001, 210000
  DWORD timeIncrementCeil = timeIncrement;
  // Don't want to round up if already rounded, values will be: 156000, 209999
  timeIncrementCeil -= 1;
  // Convert to ms, values will be: 15, 20
  timeIncrementCeil /= 10000;
  // Round up, values will be: 16, 21
  timeIncrementCeil += 1;
  // Convert back to 100ns, values will be: 160000, 210000
  timeIncrementCeil *= 10000;

  // How many milli-ticks has the interval
  LONGLONG ticksPerGetTickCountResolution =
    (PRInt64(timeIncrement) * sFrequencyPerSec) / 10000LL;

  // How many milli-ticks has the interval rounded up
  LONGLONG ticksPerGetTickCountResolutionCeiling =
    (PRInt64(timeIncrementCeil) * sFrequencyPerSec) / 10000LL;


  // I observed differences about 2 times of the GTC resolution.  GTC may
  // jump by 32 ms in two steps, therefor use the ceiling value.
  sUnderrunThreshold =
    LONGLONG((-2) * ticksPerGetTickCountResolutionCeiling);

  // QPC should go no further then 2 * GTC resolution
  sOverrunThreshold =
    LONGLONG((+2) * ticksPerGetTickCountResolution);
}

/**
 * asynchronously copy file.
 */
static nsresult
RunTest(nsIFile *srcFile, nsIFile *destFile)
{
    nsresult rv;

    LOG(("RunTest\n"));

    nsCOMPtr<nsIStreamTransportService> sts =
        do_GetService(kStreamTransportServiceCID, &rv);
    if (NS_FAILED(rv)) return rv;

    nsCOMPtr<nsIInputStream> srcStr;
    rv = NS_NewLocalFileInputStream(getter_AddRefs(srcStr), srcFile);
    if (NS_FAILED(rv)) return rv;

    nsCOMPtr<nsIOutputStream> destStr;
    rv = NS_NewLocalFileOutputStream(getter_AddRefs(destStr), destFile);
    if (NS_FAILED(rv)) return rv;

    nsCOMPtr<nsITransport> srcTransport;
    rv = sts->CreateInputTransport(srcStr, PRInt64(-1), PRInt64(-1), PR_TRUE,
                                   getter_AddRefs(srcTransport));
    if (NS_FAILED(rv)) return rv;

    nsCOMPtr<nsITransport> destTransport;
    rv = sts->CreateOutputTransport(destStr, PRInt64(-1), PRInt64(-1), PR_TRUE,
                                    getter_AddRefs(destTransport));
    if (NS_FAILED(rv)) return rv;

    MyCopier *copier = new MyCopier();
    if (copier == nsnull)
        return NS_ERROR_OUT_OF_MEMORY;
    NS_ADDREF(copier);

    rv = copier->AsyncCopy(srcTransport, destTransport);
    if (NS_FAILED(rv)) return rv;

    PumpEvents();

    NS_RELEASE(copier);
    return NS_OK;
}

nsresult
nsIncrementalDownload::FlushChunk()
{
  NS_ASSERTION(mTotalSize != nsInt64(-1), "total size should be known");

  if (mChunkLen == 0)
    return NS_OK;

  nsresult rv = AppendToFile(mDest, mChunk, mChunkLen);
  if (NS_FAILED(rv))
    return rv;

  mCurrentSize += nsInt64(mChunkLen);
  mChunkLen = 0;

  if (mProgressSink)
    mProgressSink->OnProgress(this, mObserverContext,
                              PRUint64(PRInt64(mCurrentSize)),
                              PRUint64(PRInt64(mTotalSize)));
  return NS_OK;
}

static nsresult
RunBlockingTest(nsIFile *srcFile, nsIFile *destFile)
{
    nsresult rv;

    LOG(("RunBlockingTest\n"));

    nsCOMPtr<nsIStreamTransportService> sts =
        do_GetService(kStreamTransportServiceCID, &rv);
    if (NS_FAILED(rv)) return rv;

    nsCOMPtr<nsIInputStream> srcIn;
    rv = NS_NewLocalFileInputStream(getter_AddRefs(srcIn), srcFile);
    if (NS_FAILED(rv)) return rv;

    nsCOMPtr<nsIOutputStream> fileOut;
    rv = NS_NewLocalFileOutputStream(getter_AddRefs(fileOut), destFile);
    if (NS_FAILED(rv)) return rv;
    
    nsCOMPtr<nsITransport> destTransport;
    rv = sts->CreateOutputTransport(fileOut, PRInt64(-1), PRInt64(-1),
                                    PR_TRUE, getter_AddRefs(destTransport));
    if (NS_FAILED(rv)) return rv;

    nsCOMPtr<nsIOutputStream> destOut;
    rv = destTransport->OpenOutputStream(nsITransport::OPEN_BLOCKING, 100, 10, getter_AddRefs(destOut));
    if (NS_FAILED(rv)) return rv;

    char buf[120];
    PRUint32 n;
    for (;;) {
        rv = srcIn->Read(buf, sizeof(buf), &n);
        if (NS_FAILED(rv) || (n == 0)) return rv;

        rv = destOut->Write(buf, n, &n);
        if (NS_FAILED(rv)) return rv;
    }

    return NS_OK;
}

void
nsSMILTimedElement::AddInstanceTimeFromCurrentTime(nsSMILTime aCurrentTime,
    double aOffsetSeconds, PRBool aIsBegin)
{
  double offset = aOffsetSeconds * PR_MSEC_PER_SEC;
  nsSMILTime timeWithOffset = aCurrentTime + PRInt64(NS_round(offset));

  nsSMILTimeValue timeVal;
  timeVal.SetMillis(timeWithOffset);

  nsSMILInstanceTime instanceTime(timeVal, nsnull, PR_TRUE);
  AddInstanceTime(instanceTime, aIsBegin);
}