gecko-dev/netwerk/cache/nsDiskCacheBlockFile.h
Ehsan Akhgari e368dc9c85 Bug 579517 - Part 1: Automated conversion of NSPR numeric types to stdint types in Gecko; r=bsmedberg
This patch was generated by a script.  Here's the source of the script for
future reference:

function convert() {
echo "Converting $1 to $2..."
find . ! -wholename "*nsprpub*" \
       ! -wholename "*security/nss*" \
       ! -wholename "*/.hg*" \
       ! -wholename "obj-ff-dbg*" \
       ! -name nsXPCOMCID.h \
       ! -name prtypes.h \
         -type f \
      \( -iname "*.cpp" \
         -o -iname "*.h" \
         -o -iname "*.c" \
         -o -iname "*.cc" \
         -o -iname "*.idl" \
         -o -iname "*.ipdl" \
         -o -iname "*.ipdlh" \
         -o -iname "*.mm" \) | \
    xargs -n 1 sed -i -e "s/\b$1\b/$2/g"
}

convert PRInt8 int8_t
convert PRUint8 uint8_t
convert PRInt16 int16_t
convert PRUint16 uint16_t
convert PRInt32 int32_t
convert PRUint32 uint32_t
convert PRInt64 int64_t
convert PRUint64 uint64_t

convert PRIntn int
convert PRUintn unsigned

convert PRSize size_t

convert PROffset32 int32_t
convert PROffset64 int64_t

convert PRPtrdiff ptrdiff_t

convert PRFloat64 double
2012-08-22 11:56:38 -04:00

67 lines
2.4 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set sw=4 ts=8 et tw=80 : */
/* 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 _nsDiskCacheBlockFile_h_
#define _nsDiskCacheBlockFile_h_
#include "nsIFile.h"
#include "nsDiskCache.h"
/******************************************************************************
* nsDiskCacheBlockFile
*
* The structure of a cache block file is a 4096 bytes bit map, followed by
* some number of blocks of mBlockSize. The creator of a
* nsDiskCacheBlockFile object must provide the block size for a given file.
*
*****************************************************************************/
class nsDiskCacheBlockFile {
public:
nsDiskCacheBlockFile()
: mFD(nullptr)
, mBitMap(nullptr)
, mBlockSize(0)
, mBitMapWords(0)
, mFileSize(0)
, mBitMapDirty(false)
{}
~nsDiskCacheBlockFile() { (void) Close(true); }
nsresult Open( nsIFile * blockFile, uint32_t blockSize,
uint32_t bitMapSize, nsDiskCache::CorruptCacheInfo * corruptInfo);
nsresult Close(bool flush);
/*
* Trim
* Truncates the block file to the end of the last allocated block.
*/
nsresult Trim() { return nsDiskCache::Truncate(mFD, CalcBlockFileSize()); }
nsresult DeallocateBlocks( int32_t startBlock, int32_t numBlocks);
nsresult WriteBlocks( void * buffer, uint32_t size, int32_t numBlocks,
int32_t * startBlock);
nsresult ReadBlocks( void * buffer, int32_t startBlock, int32_t numBlocks,
int32_t * bytesRead);
private:
nsresult FlushBitMap();
int32_t AllocateBlocks( int32_t numBlocks);
nsresult VerifyAllocation( int32_t startBlock, int32_t numBLocks);
uint32_t CalcBlockFileSize();
bool Write(int32_t offset, const void *buf, int32_t amount);
/**
* Data members
*/
PRFileDesc * mFD;
uint32_t * mBitMap; // XXX future: array of bit map blocks
uint32_t mBlockSize;
uint32_t mBitMapWords;
int32_t mFileSize;
bool mBitMapDirty;
};
#endif // _nsDiskCacheBlockFile_h_