gecko-dev/netwerk/cache2/CacheObserver.h

78 lines
2.2 KiB
C++

/* 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 CacheObserver__h__
#define CacheObserver__h__
#include "nsIObserver.h"
#include "nsIFile.h"
#include "nsCOMPtr.h"
#include "nsWeakReference.h"
#include <algorithm>
namespace mozilla {
namespace net {
class CacheObserver : public nsIObserver
, public nsSupportsWeakReference
{
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
virtual ~CacheObserver() {}
static nsresult Init();
static nsresult Shutdown();
static CacheObserver* Self() { return sSelf; }
// Access to preferences
static bool const UseNewCache();
static bool const UseDiskCache()
{ return sUseDiskCache; }
static bool const UseMemoryCache()
{ return sUseMemoryCache; }
static uint32_t const MemoryLimit() // <0.5MB,1024MB>, result in bytes.
{ return std::max(512U, std::min(1048576U, sMemoryLimit)) << 10; }
static uint32_t const DiskCacheCapacity() // result in bytes.
{ return sDiskCacheCapacity << 10; }
static uint32_t const MaxMemoryEntrySize() // result in bytes.
{ return sMaxMemoryEntrySize << 10; }
static uint32_t const MaxDiskEntrySize() // result in bytes.
{ return sMaxDiskEntrySize << 10; }
static uint32_t const CompressionLevel()
{ return sCompressionLevel; }
static uint32_t const HalfLifeSeconds()
{ return sHalfLifeHours * 60 * 60; }
static int32_t const HalfLifeExperiment()
{ return sHalfLifeExperiment; }
static void ParentDirOverride(nsIFile ** aDir);
static bool const EntryIsTooBig(int64_t aSize, bool aUsingDisk);
private:
static CacheObserver* sSelf;
void AttachToPreferences();
void SchduleAutoDelete();
static uint32_t sUseNewCache;
static bool sUseDiskCache;
static bool sUseMemoryCache;
static uint32_t sMemoryLimit;
static uint32_t sDiskCacheCapacity;
static uint32_t sMaxMemoryEntrySize;
static uint32_t sMaxDiskEntrySize;
static uint32_t sCompressionLevel;
static uint32_t sHalfLifeHours;
static int32_t sHalfLifeExperiment;
// Non static properties, accessible via sSelf
nsCOMPtr<nsIFile> mCacheParentDirectoryOverride;
};
} // net
} // mozilla
#endif