A brief file description. More...

#include "P_Cache.h"
#include "P_CacheTest.h"
#include "StatPages.h"
#include "I_Layout.h"

Include dependency graph for Cache.cc:

Data Structures
struct	VolInitInfo
struct	rtable_pair
Namespaces
namespace	cache_bc
Defines
#define	USELESS_REENABLES
#define	DOCACHE_CLEAR_DYN_STAT(x)
#define	STORE_COLLISION 1
#define	REG_INT(_str, _stat) reg_int(_str, (int)_stat, rsb, prefix)
Functions
void	cplist_init ()
static void	cplist_update ()
int	cplist_reconfigure ()
static int	create_volume (int volume_number, off_t size_in_blocks, int scheme, CacheVol *cp)
static void	rebuild_host_table (Cache *cache)
void	register_cache_stats (RecRawStatBlock rsb, const char prefix)
int64_t	cache_bytes_used (int volume)
int	cache_stats_bytes_used_cb (const char name, RecDataT data_type, RecData data, RecRawStatBlock *rsb, int id)
static int	validate_rww (int new_value)
static int	update_cache_config (const char , RecDataT, RecData data, void )
static void	vol_init_data_internal (Vol *d)
static void	vol_init_data (Vol *d)
void	vol_init_dir (Vol *d)
void	vol_clear_init (Vol *d)
int	vol_dir_clear (Vol *d)
static int	cmprtable (const void aa, const void bb)
void	build_vol_hash_table (CacheHostRecord *cp)
static int	fillExclusiveDisks (CacheVol *cp)
static void	reg_int (const char str, int stat, RecRawStatBlock rsb, const char *prefix, RecRawStatSyncCb sync_cb=RecRawStatSyncSum)
void	ink_cache_init (ModuleVersion v)
Variables
static size_t	DEFAULT_RAM_CACHE_MULTIPLIER = 10
static short int const	CACHE_DB_MAJOR_VERSION_COMPATIBLE = 21
int64_t	cache_config_ram_cache_size = AUTO_SIZE_RAM_CACHE
int	cache_config_ram_cache_algorithm = 0
int	cache_config_ram_cache_compress = 0
int	cache_config_ram_cache_compress_percent = 90
int	cache_config_ram_cache_use_seen_filter = 0
int	cache_config_http_max_alts = 3
int	cache_config_dir_sync_frequency = 60
int	cache_config_permit_pinning = 0
int	cache_config_vary_on_user_agent = 0
int	cache_config_select_alternate = 1
int	cache_config_max_doc_size = 0
int	cache_config_min_average_object_size = ESTIMATED_OBJECT_SIZE
int64_t	cache_config_ram_cache_cutoff = AGG_SIZE
int	cache_config_max_disk_errors = 5
int	cache_config_hit_evacuate_percent = 10
int	cache_config_hit_evacuate_size_limit = 0
int	cache_config_force_sector_size = 0
int	cache_config_target_fragment_size = DEFAULT_TARGET_FRAGMENT_SIZE
int	cache_config_agg_write_backlog = AGG_SIZE * 2
int	cache_config_enable_checksum = 0
int	cache_config_alt_rewrite_max_size = 4096
int	cache_config_read_while_writer = 0
int	cache_config_mutex_retry_delay = 2
RecRawStatBlock *	cache_rsb = NULL
Cache *	theStreamCache = 0
Cache *	theCache = 0
CacheDisk **	gdisks = NULL
int	gndisks = 0
static volatile int	initialize_disk = 0
Cache *	caches [NUM_CACHE_FRAG_TYPES] = { 0 }
CacheSync *	cacheDirSync = 0
Store	theCacheStore
CacheProcessor	cacheProcessor
Vol **	gvol = NULL
volatile int	gnvol = 0
ClassAllocator< CacheVC >	cacheVConnectionAllocator ("cacheVConnection")
ClassAllocator< EvacuationBlock >	evacuationBlockAllocator ("evacuationBlock")
ClassAllocator< CacheRemoveCont >	cacheRemoveContAllocator ("cacheRemoveCont")
ClassAllocator< EvacuationKey >	evacuationKeyAllocator ("evacuationKey")
CacheKey	zero_key
Queue< CacheVol >	cp_list
int	cp_list_len = 0
ConfigVolumes	config_volumes
static const int	DEFAULT_CACHE_OPTIONS = (O_RDWR \| _O_ATTRIB_OVERLAPPED)
static size_t const	cache_bc::HTTP_ALT_MARSHAL_SIZE = ROUND(sizeof(HTTPCacheAlt), HDR_PTR_SIZE)

Detailed Description

A brief file description.

License

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Definition in file Cache.cc.

Define Documentation

#define DOCACHE_CLEAR_DYN_STAT ( x )

Value:

do { \
        RecSetRawStatSum(rsb, x, 0); \
        RecSetRawStatCount(rsb, x, 0); \
} while (0);

Definition at line 50 of file Cache.cc.

Referenced by reg_int().

#define REG_INT	(	_str,
		_stat
	)		reg_int(_str, (int)_stat, rsb, prefix)

Definition at line 3417 of file Cache.cc.

Referenced by register_cache_stats().

#define STORE_COLLISION 1

Definition at line 2357 of file Cache.cc.

#define USELESS_REENABLES

Definition at line 42 of file Cache.cc.

Function Documentation

void build_vol_hash_table ( CacheHostRecord * cp )

Definition at line 2036 of file Cache.cc.

References ats_free(), ats_malloc(), CACHE_MEM_FREE_TIMEOUT, cmprtable(), Debug, Vol::disk, DISK_BAD, ats::CryptoHash::fold(), Vol::hash_id, rtable_pair::idx, ink_assert, Vol::len, map, new_Freer(), next_rand(), CacheHostRecord::num_vols, rtable_pair::rval, VOL_HASH_EMPTY, CacheHostRecord::vol_hash_table, VOL_HASH_TABLE_SIZE, and CacheHostRecord::vols.

Referenced by cache_disk_replacement_stability(), CacheHostRecord::Init(), and rebuild_host_table().

int64_t cache_bytes_used ( int volume )

Definition at line 217 of file Cache.cc.

References DISK_BAD, gnvol, Vol::header, Vol::len, Vol::start, vol_dirlen(), and VolHeaderFooter::write_pos.

Referenced by cache_stats_bytes_used_cb().

int cache_stats_bytes_used_cb	(	const char *	name,
		RecDataT	data_type,
		RecData *	data,
		RecRawStatBlock *	rsb,
		int	id
	)

Definition at line 234 of file Cache.cc.

References cache_bytes_total_stat, cache_bytes_used(), CACHE_INITIALIZED, cache_percent_full_stat, CacheProcessor::initialized, RecGetGlobalRawStatSum(), RecRawStatSyncSum(), and RecSetGlobalRawStatSum().

Referenced by register_cache_stats().

static int cmprtable	(	const void *	aa,
		const void *	bb
	)			`[static]`

Definition at line 2027 of file Cache.cc.

References a, and rtable_pair::rval.

Referenced by build_vol_hash_table().

void cplist_init ( )

Definition at line 2944 of file Cache.cc.

References ats_malloc(), CacheVol::disk_vols, CacheDisk::disk_vols, DiskVol::dpb_queue, Queue< C, L >::enqueue(), gndisks, DLL< C, L >::head, CacheDisk::header, ink_assert, DiskVol::num_volblocks, CacheVol::num_vols, DiskHeader::num_volumes, CacheVol::scheme, DiskVol::size, CacheVol::size, DiskVol::vol_number, and CacheVol::vol_number.

Referenced by CacheProcessor::diskInitialized(), and execute_and_verify().

int cplist_reconfigure ( )

void cplist_update ( ) [static]

Definition at line 2983 of file Cache.cc.

References ConfigVol::cachep, ConfigVolumes::cp_queue, CacheDisk::delete_volume(), DiskVol::disk, CacheVol::disk_vols, CacheDisk::forced_volume_num, gndisks, DLL< C, L >::head, ConfigVol::number, Queue< C, L >::remove(), ConfigVol::scheme, CacheVol::scheme, CacheVol::size, ConfigVol::size, and CacheVol::vol_number.

Referenced by cplist_reconfigure().

int create_volume	(	int	volume_number,
		off_t	size_in_blocks,
		int	scheme,
		CacheVol *	cp
	)			`[static]`

Definition at line 3300 of file Cache.cc.

References CacheDisk::create_volume(), Debug, CacheVol::disk_vols, fillExclusiveDisks(), CacheDisk::get_diskvol(), gndisks, ink_assert, DiskVolBlock::len, Note, CacheVol::num_vols, PATH_NAME_MAX, REC_ReadConfigString, CacheVol::scheme, CacheVol::size, VOL_BLOCK_SIZE, CacheVol::vol_number, and Warning.

Referenced by cplist_reconfigure().

static int fillExclusiveDisks ( CacheVol * cp ) [static]

Definition at line 3038 of file Cache.cc.

References CacheDisk::create_volume(), Debug, CacheDisk::delete_all_volumes(), CacheVol::disk_vols, CacheDisk::get_diskvol(), gndisks, DiskVolBlock::len, Note, CacheDisk::num_usable_blocks, CacheVol::num_vols, CacheVol::scheme, CacheVol::size, and CacheVol::vol_number.

Referenced by cplist_reconfigure(), and create_volume().

void ink_cache_init ( ModuleVersion v )

Definition at line 3478 of file Cache.cc.

References cache_config_agg_write_backlog, cache_config_alt_rewrite_max_size, cache_config_compatibility_4_2_0_fixup, cache_config_dir_sync_frequency, cache_config_enable_checksum, cache_config_force_sector_size, cache_config_hit_evacuate_percent, cache_config_hit_evacuate_size_limit, cache_config_http_max_alts, cache_config_max_disk_errors, cache_config_max_doc_size, cache_config_mutex_retry_delay, cache_config_permit_pinning, cache_config_ram_cache_algorithm, cache_config_ram_cache_compress, cache_config_ram_cache_compress_percent, cache_config_ram_cache_cutoff, cache_config_ram_cache_size, cache_config_ram_cache_use_seen_filter, cache_config_read_while_writer, cache_config_select_alternate, cache_config_target_fragment_size, cache_config_vary_on_user_agent, CACHE_MODULE_VERSION, cache_stat_count, checkModuleVersion(), Debug, ink_release_assert, Store::n_disks, Store::read_config(), REC_EstablishStaticConfigInt32, REC_EstablishStaticConfigInteger, REC_RegisterConfigUpdateFunc, RecAllocateRawStatBlock(), RecConfigReadConfigPath(), register_cache_stats(), update_cache_config(), validate_rww(), and Warning.

Referenced by main().

void rebuild_host_table ( Cache * cache ) [static]

Definition at line 3363 of file Cache.cc.

References build_vol_hash_table(), CacheHostTable::gen_host_rec, CacheHostMatcher::getDataArray(), CacheHostTable::getHostMatcher(), CacheHostMatcher::getNumElements(), Cache::hosttable, and CacheHostTable::m_numEntries.

Referenced by CacheProcessor::mark_storage_offline().

static void reg_int	(	const char *	str,
		int	stat,
		RecRawStatBlock *	rsb,
		const char *	prefix,
		RecRawStatSyncCb	sync_cb = `RecRawStatSyncSum`
	)			`[static]`