projects / thirdparty / squid.git / blame
| Commit | Line | Data |
|---|---|---|
| 2745fea5 | 1 | /* |
| 77b1029d | 2 | * Copyright (C) 1996-2020 The Squid Software Foundation and contributors |
| 2745fea5 AR |
3 | * |
| 4 | * Squid software is distributed under GPLv2+ license and includes | |
| 5 | * contributions from numerous individuals and organizations. | |
| 6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef SQUID_STORE_DISKS_H | |
| 10 | #define SQUID_STORE_DISKS_H | |
| 11 | ||
| 12 | #include "store/Controlled.h" | |
| 13 | #include "store/forward.h" | |
| 14 | ||
| 15 | namespace Store { | |
| 16 | ||
| 17 | /// summary view of all disk caches (cache_dirs) combined | |
| 18 | class Disks: public Controlled | |
| 19 | { | |
| 20 | public: | |
| 5ca027f0 AR |
21 | Disks(); |
| 22 | ||
| 2745fea5 AR |
23 | /* Storage API */ |
| 24 | virtual void create() override; | |
| 25 | virtual void init() override; | |
| 26 | virtual StoreEntry *get(const cache_key *) override; | |
| 27 | virtual uint64_t maxSize() const override; | |
| 28 | virtual uint64_t minSize() const override; | |
| 29 | virtual uint64_t currentSize() const override; | |
| 30 | virtual uint64_t currentCount() const override; | |
| 31 | virtual int64_t maxObjectSize() const override; | |
| 32 | virtual void getStats(StoreInfoStats &stats) const override; | |
| 33 | virtual void stat(StoreEntry &) const override; | |
| 34 | virtual void sync() override; | |
| 35 | virtual void reference(StoreEntry &) override; | |
| 36 | virtual bool dereference(StoreEntry &e) override; | |
| abf396ec | 37 | virtual void updateHeaders(StoreEntry *) override; |
| 2745fea5 | 38 | virtual void maintain() override; |
| 4310f8b0 EB |
39 | virtual bool anchorToCache(StoreEntry &e, bool &inSync) override; |
| 40 | virtual bool updateAnchored(StoreEntry &) override; | |
| 41 | virtual void evictCached(StoreEntry &) override; | |
| 42 | virtual void evictIfFound(const cache_key *) override; | |
| 2745fea5 AR |
43 | virtual int callback() override; |
| 44 | ||
| 5ca027f0 AR |
45 | /// slowly calculate (and cache) hi/lo watermarks and similar limits |
| 46 | void updateLimits(); | |
| 47 | ||
| 82bee387 | 48 | /// Additional unknown-size entry bytes required by disks in order to |
| 5ca027f0 AR |
49 | /// reduce the risk of selecting the wrong disk cache for the growing entry. |
| 50 | int64_t accumulateMore(const StoreEntry&) const; | |
| daed75a9 EB |
51 | /// whether any disk cache is SMP-aware |
| 52 | static bool SmpAware(); | |
| 4310f8b0 EB |
53 | /// whether any of disk caches has entry with e.key |
| 54 | bool hasReadableEntry(const StoreEntry &) const; | |
| 5ca027f0 | 55 | |
| 2745fea5 AR |
56 | private: |
| 57 | /* migration logic */ | |
| 58 | SwapDir *store(int const x) const; | |
| daed75a9 | 59 | static SwapDir &Dir(int const idx); |
| 5ca027f0 AR |
60 | |
| 61 | int64_t largestMinimumObjectSize; ///< maximum of all Disk::minObjectSize()s | |
| 62 | int64_t largestMaximumObjectSize; ///< maximum of all Disk::maxObjectSize()s | |
| 63 | int64_t secondLargestMaximumObjectSize; ///< the second-biggest Disk::maxObjectSize() | |
| 2745fea5 AR |
64 | }; |
| 65 | ||
| 66 | } // namespace Store | |
| 67 | ||
| 68 | /* Store::Disks globals that should be converted to use RegisteredRunner */ | |
| 69 | void storeDirOpenSwapLogs(void); | |
| 70 | int storeDirWriteCleanLogs(int reopen); | |
| 71 | void storeDirCloseSwapLogs(void); | |
| 72 | ||
| 73 | /* Globals that should be converted to static Store::Disks methods */ | |
| 74 | void allocate_new_swapdir(Store::DiskConfig *swap); | |
| 75 | void free_cachedir(Store::DiskConfig *swap); | |
| 76 | ||
| 77 | /* Globals that should be converted to Store::Disks private data members */ | |
| 78 | typedef int STDIRSELECT(const StoreEntry *e); | |
| 79 | extern STDIRSELECT *storeDirSelectSwapDir; | |
| 80 | ||
| 81 | /* Globals that should be moved to some Store::UFS-specific logging module */ | |
| 82 | void storeDirSwapLog(const StoreEntry *e, int op); | |
| 83 | ||
| 84 | #endif /* SQUID_STORE_DISKS_H */ | |
| 7d84d4ca | 85 |