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