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Lazyfree: a first implementation of non blocking DEL.

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antirez
2015-07-30 11:46:31 +02:00
parent 712ea7296d
commit 0c05436cef
8 changed files with 341 additions and 53 deletions
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61
src/server.h
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@ -185,27 +185,6 @@ typedef long long mstime_t; /* millisecond time type. */
#define CMD_ASKING 4096 /* "k" flag */
#define CMD_FAST 8192 /* "F" flag */
/* Object types */
#define OBJ_STRING 0
#define OBJ_LIST 1
#define OBJ_SET 2
#define OBJ_ZSET 3
#define OBJ_HASH 4
/* Objects encoding. Some kind of objects like Strings and Hashes can be
* internally represented in multiple ways. The 'encoding' field of the object
* is set to one of this fields for this object. */
#define OBJ_ENCODING_RAW 0 /* Raw representation */
#define OBJ_ENCODING_INT 1 /* Encoded as integer */
#define OBJ_ENCODING_HT 2 /* Encoded as hash table */
#define OBJ_ENCODING_ZIPMAP 3 /* Encoded as zipmap */
#define OBJ_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
#define OBJ_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
#define OBJ_ENCODING_INTSET 6 /* Encoded as intset */
#define OBJ_ENCODING_SKIPLIST 7 /* Encoded as skiplist */
#define OBJ_ENCODING_EMBSTR 8 /* Embedded sds string encoding */
#define OBJ_ENCODING_QUICKLIST 9 /* Encoded as linked list of ziplists */
/* Defines related to the dump file format. To store 32 bits lengths for short
* keys requires a lot of space, so we check the most significant 2 bits of
* the first byte to interpreter the length:
@ -441,9 +420,31 @@ typedef long long mstime_t; /* millisecond time type. */
/* A redis object, that is a type able to hold a string / list / set */
/* The actual Redis Object */
#define OBJ_STRING 0
#define OBJ_LIST 1
#define OBJ_SET 2
#define OBJ_ZSET 3
#define OBJ_HASH 4
/* Objects encoding. Some kind of objects like Strings and Hashes can be
* internally represented in multiple ways. The 'encoding' field of the object
* is set to one of this fields for this object. */
#define OBJ_ENCODING_RAW 0 /* Raw representation */
#define OBJ_ENCODING_INT 1 /* Encoded as integer */
#define OBJ_ENCODING_HT 2 /* Encoded as hash table */
#define OBJ_ENCODING_ZIPMAP 3 /* Encoded as zipmap */
#define OBJ_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
#define OBJ_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
#define OBJ_ENCODING_INTSET 6 /* Encoded as intset */
#define OBJ_ENCODING_SKIPLIST 7 /* Encoded as skiplist */
#define OBJ_ENCODING_EMBSTR 8 /* Embedded sds string encoding */
#define OBJ_ENCODING_QUICKLIST 9 /* Encoded as linked list of ziplists */
#define LRU_BITS 24
#define LRU_CLOCK_MAX ((1<<LRU_BITS)-1) /* Max value of obj->lru */
#define LRU_CLOCK_RESOLUTION 1000 /* LRU clock resolution in ms */
#define OBJ_SHARED_REFCOUNT INT_MAX
typedef struct redisObject {
unsigned type:4;
unsigned encoding:4;
@ -702,6 +703,10 @@ struct redisServer {
int cronloops; /* Number of times the cron function run */
char runid[CONFIG_RUN_ID_SIZE+1]; /* ID always different at every exec. */
int sentinel_mode; /* True if this instance is a Sentinel. */
/* Lazy free */
list *lazyfree_dbs; /* List of DBs to free in background. */
list *lazyfree_obj; /* List of objects to free in background. */
size_t lazyfree_elements; /* Number of logical element in obj list. */
/* Networking */
int port; /* TCP listening port */
int tcp_backlog; /* TCP listen() backlog */
@ -1156,6 +1161,7 @@ void flagTransaction(client *c);
void decrRefCount(robj *o);
void decrRefCountVoid(void *o);
void incrRefCount(robj *o);
robj *makeObjectShared(robj *o);
robj *resetRefCount(robj *obj);
void freeStringObject(robj *o);
void freeListObject(robj *o);
@ -1376,6 +1382,7 @@ void dbOverwrite(redisDb *db, robj *key, robj *val);
void setKey(redisDb *db, robj *key, robj *val);
int dbExists(redisDb *db, robj *key);
robj *dbRandomKey(redisDb *db);
int dbSyncDelete(redisDb *db, robj *key);
int dbDelete(redisDb *db, robj *key);
robj *dbUnshareStringValue(redisDb *db, robj *key, robj *o);
long long emptyDb(void(callback)(void*));
@ -1388,6 +1395,17 @@ unsigned int delKeysInSlot(unsigned int hashslot);
int verifyClusterConfigWithData(void);
void scanGenericCommand(client *c, robj *o, unsigned long cursor);
int parseScanCursorOrReply(client *c, robj *o, unsigned long *cursor);
void slotToKeyAdd(robj *key);
void slotToKeyDel(robj *key);
void slotToKeyFlush(void);
/* Lazy free */
#define LAZYFREE_STEP_SLOW 0
#define LAZYFREE_STEP_FAST 1
int dbAsyncDelete(redisDb *db, robj *key);
void initLazyfreeEngine(void);
size_t lazyfreeStep(int type);
int lazyfreeCron(struct aeEventLoop *eventLoop, long long id, void *clientData);
/* API to get key arguments from commands */
int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys);
@ -1443,6 +1461,7 @@ void setexCommand(client *c);
void psetexCommand(client *c);
void getCommand(client *c);
void delCommand(client *c);
void unlinkCommand(client *c);
void existsCommand(client *c);
void setbitCommand(client *c);
void getbitCommand(client *c);