gecko/netwerk/cache/nsDiskCacheBinding.h
Ehsan Akhgari 0fd9123eac 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

118 lines
4.0 KiB
C++

/* -*- Mode: C++; tab-width: 4; 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 _nsDiskCacheBinding_h_
#define _nsDiskCacheBinding_h_
#include "nspr.h"
#include "pldhash.h"
#include "nsISupports.h"
#include "nsCacheEntry.h"
#include "nsDiskCacheMap.h"
#include "nsDiskCacheStreams.h"
/******************************************************************************
* nsDiskCacheBinding
*
* Created for disk cache specific data and stored in nsCacheEntry.mData as
* an nsISupports. Also stored in nsDiskCacheHashTable, with collisions
* linked by the PRCList.
*
*****************************************************************************/
class nsDiskCacheDeviceDeactivateEntryEvent;
class nsDiskCacheBinding : public nsISupports, public PRCList {
public:
NS_DECL_ISUPPORTS
nsDiskCacheBinding(nsCacheEntry* entry, nsDiskCacheRecord * record);
virtual ~nsDiskCacheBinding();
nsresult EnsureStreamIO();
bool IsActive() { return mCacheEntry != nullptr;}
// XXX make friends
public:
nsCacheEntry* mCacheEntry; // back pointer to parent nsCacheEntry
nsDiskCacheRecord mRecord;
nsDiskCacheStreamIO* mStreamIO; // strong reference
bool mDoomed; // record is not stored in cache map
uint8_t mGeneration; // possibly just reservation
// If set, points to a pending event which will deactivate |mCacheEntry|.
// If not set then either |mCacheEntry| is not deactivated, or it has been
// deactivated but the device returned it from FindEntry() before the event
// fired. In both two latter cases this binding is to be considered valid.
nsDiskCacheDeviceDeactivateEntryEvent *mDeactivateEvent;
};
/******************************************************************************
* Utility Functions
*****************************************************************************/
nsDiskCacheBinding * GetCacheEntryBinding(nsCacheEntry * entry);
/******************************************************************************
* nsDiskCacheBindery
*
* Used to keep track of nsDiskCacheBinding associated with active/bound (and
* possibly doomed) entries. Lookups on 4 byte disk hash to find collisions
* (which need to be doomed, instead of just evicted. Collisions are linked
* using a PRCList to keep track of current generation number.
*
* Used to detect hash number collisions, and find available generation numbers.
*
* Not all nsDiskCacheBinding have a generation number.
*
* Generation numbers may be aquired late, or lost (when data fits in block file)
*
* Collisions can occur:
* BindEntry() - hashnumbers collide (possibly different keys)
*
* Generation number required:
* DeactivateEntry() - metadata written to disk, may require file
* GetFileForEntry() - force data to require file
* writing to stream - data size may require file
*
* Binding can be kept in PRCList in order of generation numbers.
* Binding with no generation number can be Appended to PRCList (last).
*
*****************************************************************************/
class nsDiskCacheBindery {
public:
nsDiskCacheBindery();
~nsDiskCacheBindery();
nsresult Init();
void Reset();
nsDiskCacheBinding * CreateBinding(nsCacheEntry * entry,
nsDiskCacheRecord * record);
nsDiskCacheBinding * FindActiveBinding(uint32_t hashNumber);
void RemoveBinding(nsDiskCacheBinding * binding);
bool ActiveBindings();
private:
nsresult AddBinding(nsDiskCacheBinding * binding);
// member variables
static PLDHashTableOps ops;
PLDHashTable table;
bool initialized;
};
#endif /* _nsDiskCacheBinding_h_ */