forked from mirrors/gecko-dev
123 lines
4 KiB
C++
123 lines
4 KiB
C++
/* 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 CacheObserver__h__
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#define CacheObserver__h__
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#include "nsIObserver.h"
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#include "nsIFile.h"
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#include "nsCOMPtr.h"
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#include "nsWeakReference.h"
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#include "mozilla/StaticPrefs_browser.h"
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#include "mozilla/StaticPrefs_privacy.h"
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#include <algorithm>
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namespace mozilla {
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namespace net {
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class CacheObserver : public nsIObserver, public nsSupportsWeakReference {
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virtual ~CacheObserver() = default;
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIOBSERVER
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static nsresult Init();
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static nsresult Shutdown();
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static CacheObserver* Self() { return sSelf; }
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// Access to preferences
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static bool UseDiskCache() {
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return StaticPrefs::browser_cache_disk_enable();
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}
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static bool UseMemoryCache() {
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return StaticPrefs::browser_cache_memory_enable();
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}
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static uint32_t MetadataMemoryLimit() // result in kilobytes.
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{
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return StaticPrefs::browser_cache_disk_metadata_memory_limit();
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}
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static uint32_t MemoryCacheCapacity(); // result in kilobytes.
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static uint32_t DiskCacheCapacity(); // result in kilobytes.
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static void SetSmartDiskCacheCapacity(uint32_t); // parameter in kilobytes.
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static uint32_t DiskFreeSpaceSoftLimit() // result in kilobytes.
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{
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return StaticPrefs::browser_cache_disk_free_space_soft_limit();
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}
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static uint32_t DiskFreeSpaceHardLimit() // result in kilobytes.
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{
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return StaticPrefs::browser_cache_disk_free_space_hard_limit();
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}
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static bool SmartCacheSizeEnabled() {
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return StaticPrefs::browser_cache_disk_smart_size_enabled();
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}
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static uint32_t PreloadChunkCount() {
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return StaticPrefs::browser_cache_disk_preload_chunk_count();
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}
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static uint32_t MaxMemoryEntrySize() // result in kilobytes.
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{
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return StaticPrefs::browser_cache_memory_max_entry_size();
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}
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static uint32_t MaxDiskEntrySize() // result in kilobytes.
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{
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return StaticPrefs::browser_cache_disk_max_entry_size();
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}
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static uint32_t MaxDiskChunksMemoryUsage(
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bool aPriority) // result in kilobytes.
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{
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return aPriority
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? StaticPrefs::
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browser_cache_disk_max_priority_chunks_memory_usage()
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: StaticPrefs::browser_cache_disk_max_chunks_memory_usage();
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}
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static uint32_t HalfLifeSeconds() { return sHalfLifeHours * 60.0F * 60.0F; }
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static bool ClearCacheOnShutdown() {
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return StaticPrefs::privacy_sanitize_sanitizeOnShutdown() &&
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StaticPrefs::privacy_clearOnShutdown_cache();
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}
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static bool CacheFSReported() { return sCacheFSReported; }
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static void SetCacheFSReported();
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static bool HashStatsReported() { return sHashStatsReported; }
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static void SetHashStatsReported();
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static uint32_t CacheAmountWritten() // result in kilobytes
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{
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return sCacheAmountWritten;
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}
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static void SetCacheAmountWritten(uint32_t); // parameter in kilobytes.
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static void ParentDirOverride(nsIFile** aDir);
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static bool EntryIsTooBig(int64_t aSize, bool aUsingDisk);
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static uint32_t MaxShutdownIOLag() {
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return StaticPrefs::browser_cache_max_shutdown_io_lag();
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}
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static bool IsPastShutdownIOLag();
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static bool ShuttingDown() {
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return sShutdownDemandedTime != PR_INTERVAL_NO_TIMEOUT;
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}
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private:
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static StaticRefPtr<CacheObserver> sSelf;
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void StoreCacheFSReported();
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void StoreHashStatsReported();
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void StoreCacheAmountWritten();
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void AttachToPreferences();
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static int32_t sAutoMemoryCacheCapacity;
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static Atomic<uint32_t, Relaxed> sSmartDiskCacheCapacity;
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static float sHalfLifeHours;
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static bool sCacheFSReported;
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static bool sHashStatsReported;
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static Atomic<PRIntervalTime> sShutdownDemandedTime;
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static Atomic<uint32_t, Relaxed> sCacheAmountWritten;
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// Non static properties, accessible via sSelf
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nsCOMPtr<nsIFile> mCacheParentDirectoryOverride;
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};
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} // namespace net
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} // namespace mozilla
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#endif
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