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Optimization which does not stat() the file prior to opening it. bug 122523, r=dp@netscape.com, sr=dveditz@netscape.com

This commit is contained in:
dougt%netscape.com 2002-02-06 20:39:56 +00:00
Родитель 7c12cf0bb2
Коммит dc5d225d2f
2 изменённых файлов: 76 добавлений и 29 удалений
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100
netwerk/base/src/nsFileStreams.cpp
Просмотреть файл

@ -102,7 +102,8 @@ NS_IMPL_THREADSAFE_ISUPPORTS2(nsFileIO,
nsIStreamIO)
nsFileIO::nsFileIO()
: mIOFlags(0),
: mFD(0),
mIOFlags(0),
mPerm(0),
mStatus(NS_OK)
{
@ -177,17 +178,16 @@ nsFileIO::Open(char **contentType, PRInt32 *contentLength)
*contentLength = 0;
*contentType = nsnull;
// don't actually open the file here -- we'll do it on demand in the
// GetInputStream/GetOutputStream methods
nsresult rv = NS_OK;
PRBool exist;
rv = mFile->Exists(&exist);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsILocalFile> localFile = do_QueryInterface(mFile, &rv);
if (NS_FAILED(rv)) return rv;
if (mIOFlags == -1)
mIOFlags = PR_RDONLY;
if (mPerm == -1)
mPerm = 0;
if (!exist)
return NS_ERROR_FILE_NOT_FOUND;
rv = localFile->OpenNSPRFileDesc(mIOFlags, mPerm, &mFD);
if (NS_FAILED(rv)) return NS_ERROR_FILE_NOT_FOUND; //How do we deal with directories/??
// We'll try to use the file's length, if it has one. If not,
// assume the file to be special, and set the content length
@ -212,6 +212,7 @@ nsFileIO::Open(char **contentType, PRInt32 *contentLength)
*contentLength = -1;
}
else {
// must we really go though this? dougt
nsIMIMEService* mimeServ = nsnull;
nsFileTransportService* fileTransportService = nsFileTransportService::GetInstance();
if (fileTransportService) {
@ -253,16 +254,27 @@ NS_IMETHODIMP
nsFileIO::GetInputStream(nsIInputStream * *aInputStream)
{
NS_ASSERTION(mFile, "File must not be null");
if (mFile == nsnull)
if (!mFile)
return NS_ERROR_NOT_INITIALIZED;
nsresult rv;
if (!mFD) {
nsXPIDLCString contentType;
PRInt32 contentLength;
rv = Open(getter_Copies(contentType), &contentLength);
if (NS_FAILED(rv)) // file or directory does not exist
return rv;
NS_ASSERTION(mFD, "Must have a valid mFD at this point");
}
PRBool isDir;
rv = mFile->IsDirectory(&isDir);
if (NS_FAILED(rv)) // file or directory does not exist
return rv;
if (isDir) {
PR_Close(mFD);
rv = nsDirectoryIndexStream::Create(mFile, aInputStream);
PR_LOG(gFileIOLog, PR_LOG_DEBUG,
("nsFileIO: opening local dir %s for input (%x)",
@ -274,14 +286,15 @@ nsFileIO::GetInputStream(nsIInputStream * *aInputStream)
if (fileIn == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(fileIn);
rv = fileIn->Init(mFile, mIOFlags, mPerm, PR_FALSE);
rv = fileIn->InitWithFileDescriptor(mFD, mFile, PR_FALSE);
if (NS_SUCCEEDED(rv)) {
#ifdef NS_NO_INPUT_BUFFERING
*aInputStream = fileIn;
NS_ADDREF(*aInputStream);
#else
rv = NS_NewBufferedInputStream(aInputStream,
fileIn, NS_INPUT_STREAM_BUFFER_SIZE);
fileIn,
NS_INPUT_STREAM_BUFFER_SIZE);
#endif
}
NS_RELEASE(fileIn);
@ -300,6 +313,15 @@ nsFileIO::GetOutputStream(nsIOutputStream * *aOutputStream)
return NS_ERROR_NOT_INITIALIZED;
nsresult rv;
if (!mFD) {
nsXPIDLCString contentType;
PRInt32 contentLength;
rv = Open(getter_Copies(contentType), &contentLength);
if (NS_FAILED(rv)) // file or directory does not exist
return rv;
}
PRBool isDir;
rv = mFile->IsDirectory(&isDir);
if (NS_SUCCEEDED(rv) && isDir) {
@ -310,7 +332,7 @@ nsFileIO::GetOutputStream(nsIOutputStream * *aOutputStream)
if (fileOut == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(fileOut);
rv = fileOut->Init(mFile, mIOFlags, mPerm);
rv = fileOut->InitWithFileDescriptor(mFD, mFile);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIOutputStream> bufStr;
#ifdef NS_NO_OUTPUT_BUFFERING
@ -318,7 +340,8 @@ nsFileIO::GetOutputStream(nsIOutputStream * *aOutputStream)
NS_ADDREF(*aOutputStream);
#else
rv = NS_NewBufferedOutputStream(aOutputStream,
fileOut, NS_OUTPUT_STREAM_BUFFER_SIZE);
fileOut,
NS_OUTPUT_STREAM_BUFFER_SIZE);
#endif
}
NS_RELEASE(fileOut);
@ -457,11 +480,8 @@ nsFileInputStream::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
NS_IMETHODIMP
nsFileInputStream::Init(nsIFile* file, PRInt32 ioFlags, PRInt32 perm, PRBool deleteOnClose)
{
NS_ASSERTION(mFD == nsnull, "already inited");
if (mFD != nsnull)
return NS_ERROR_FAILURE;
nsresult rv;
{
nsresult rv = NS_OK;
nsCOMPtr<nsILocalFile> localFile = do_QueryInterface(file, &rv);
if (NS_FAILED(rv)) return rv;
if (ioFlags == -1)
@ -469,10 +489,22 @@ nsFileInputStream::Init(nsIFile* file, PRInt32 ioFlags, PRInt32 perm, PRBool del
if (perm == -1)
perm = 0;
mLineBuffer = nsnull;
rv = localFile->OpenNSPRFileDesc(ioFlags, perm, &mFD);
PRFileDesc* fd;
rv = localFile->OpenNSPRFileDesc(ioFlags, perm, &fd);
if (NS_FAILED(rv)) return rv;
return InitWithFileDescriptor(fd, file, deleteOnClose);
}
nsresult
nsFileInputStream::InitWithFileDescriptor(PRFileDesc* fd, nsIFile* file, PRBool deleteOnClose)
{
NS_ASSERTION(mFD == nsnull, "already inited");
if (mFD || !fd)
return NS_ERROR_FAILURE;
mLineBuffer = nsnull;
mFD = fd;
if (deleteOnClose) {
// POSIX compatible filesystems allow a file to be unlinked while a
@ -480,7 +512,7 @@ nsFileInputStream::Init(nsIFile* file, PRInt32 ioFlags, PRInt32 perm, PRBool del
// opened the file descriptor, we'll try to remove the file. if that
// fails, then we'll just remember the nsIFile and remove it after we
// close the file descriptor.
rv = file->Remove(PR_FALSE);
nsresult rv = file->Remove(PR_FALSE);
if (NS_FAILED(rv))
mFileToDelete = file;
}
@ -605,9 +637,6 @@ nsFileOutputStream::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
NS_IMETHODIMP
nsFileOutputStream::Init(nsIFile* file, PRInt32 ioFlags, PRInt32 perm)
{
NS_ASSERTION(mFD == nsnull, "already inited");
if (mFD != nsnull)
return NS_ERROR_FAILURE;
nsresult rv;
nsCOMPtr<nsILocalFile> localFile = do_QueryInterface(file, &rv);
if (NS_FAILED(rv)) return rv;
@ -615,7 +644,22 @@ nsFileOutputStream::Init(nsIFile* file, PRInt32 ioFlags, PRInt32 perm)
ioFlags = PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE;
if (perm <= 0)
perm = 0664;
return localFile->OpenNSPRFileDesc(ioFlags, perm, &mFD);
PRFileDesc* fd;
rv = localFile->OpenNSPRFileDesc(ioFlags, perm, &fd);
if (NS_FAILED(rv)) return rv;
return InitWithFileDescriptor(fd, file);
}
nsresult
nsFileOutputStream::InitWithFileDescriptor(PRFileDesc* fd, nsIFile* file)
{
NS_ASSERTION(mFD == nsnull, "already inited");
if (mFD || !fd)
return NS_ERROR_FAILURE;
mFD = fd;
return NS_OK;
}
NS_IMETHODIMP

5
netwerk/base/src/nsFileStreams.h
Просмотреть файл

@ -66,6 +66,7 @@ public:
protected:
nsCOMPtr<nsIFile> mFile;
PRFileDesc* mFD;
PRInt32 mIOFlags;
PRInt32 mPerm;
nsresult mStatus;
@ -111,6 +112,7 @@ public:
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
nsresult InitWithFileDescriptor(PRFileDesc* fd, nsIFile* file, PRBool deleteOnClose);
protected:
nsLineBuffer *mLineBuffer;
nsCOMPtr<nsIFile> mFileToDelete;
@ -128,9 +130,10 @@ public:
nsFileOutputStream() : nsFileStream() {}
virtual ~nsFileOutputStream() { nsFileOutputStream::Close(); }
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
nsresult InitWithFileDescriptor(PRFileDesc* fd, nsIFile* file);
};
////////////////////////////////////////////////////////////////////////////////