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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsTemporaryFileInputStream_h__
#define nsTemporaryFileInputStream_h__
#include "mozilla/Mutex.h"
#include "nsAutoPtr.h"
#include "nsIInputStream.h"
#include "nsIIPCSerializableInputStream.h"
#include "nsISeekableStream.h"
#include "prio.h"
class nsTemporaryFileInputStream : public nsIInputStream
, public nsISeekableStream
, public nsIIPCSerializableInputStream
{
public:
//used to release a PRFileDesc
class FileDescOwner
{
friend class nsTemporaryFileInputStream;
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(FileDescOwner)
explicit FileDescOwner(PRFileDesc* aFD)
: mFD(aFD),
mMutex("FileDescOwner::mMutex")
{
MOZ_ASSERT(aFD);
}
private:
~FileDescOwner()
{
PR_Close(mFD);
}
public:
mozilla::Mutex& FileMutex() { return mMutex; }
private:
PRFileDesc* mFD;
mozilla::Mutex mMutex;
};
nsTemporaryFileInputStream(FileDescOwner* aFileDescOwner, uint64_t aStartPos, uint64_t aEndPos);
nsTemporaryFileInputStream();
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIINPUTSTREAM
NS_DECL_NSISEEKABLESTREAM
NS_DECL_NSIIPCSERIALIZABLEINPUTSTREAM
private:
virtual ~nsTemporaryFileInputStream() { }
RefPtr<FileDescOwner> mFileDescOwner;
uint64_t mStartPos;
uint64_t mCurPos;
uint64_t mEndPos;
bool mClosed;
};
#endif // nsTemporaryFileInputStream_h__
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