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more non blocking VM changes

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antirez 2010-01-12 15:09:11 -05:00
parent d663729a12
commit f2d9f50f6c
1 changed files with 26 additions and 13 deletions
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39
redis.c
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@ -949,6 +949,7 @@ static unsigned int dictEncObjHash(const void *key) {
return hash;
}
/* Sets type and expires */
static dictType setDictType = {
dictEncObjHash, /* hash function */
NULL, /* key dup */
@ -958,6 +959,7 @@ static dictType setDictType = {
NULL /* val destructor */
};
/* Sorted sets hash (note: a skiplist is used in addition to the hash table) */
static dictType zsetDictType = {
dictEncObjHash, /* hash function */
NULL, /* key dup */
@ -967,6 +969,7 @@ static dictType zsetDictType = {
dictVanillaFree /* val destructor of malloc(sizeof(double)) */
};
/* Db->dict */
static dictType hashDictType = {
dictObjHash, /* hash function */
NULL, /* key dup */
@ -976,6 +979,16 @@ static dictType hashDictType = {
dictRedisObjectDestructor /* val destructor */
};
/* Db->expires */
static dictType keyptrDictType = {
dictObjHash, /* hash function */
NULL, /* key dup */
NULL, /* val dup */
dictObjKeyCompare, /* key compare */
dictRedisObjectDestructor, /* key destructor */
NULL /* val destructor */
};
/* Keylist hash table type has unencoded redis objects as keys and
* lists as values. It's used for blocking operations (BLPOP) */
static dictType keylistDictType = {
@ -1402,7 +1415,7 @@ static void initServer() {
}
for (j = 0; j < server.dbnum; j++) {
server.db[j].dict = dictCreate(&hashDictType,NULL);
server.db[j].expires = dictCreate(&setDictType,NULL);
server.db[j].expires = dictCreate(&keyptrDictType,NULL);
server.db[j].blockingkeys = dictCreate(&keylistDictType,NULL);
server.db[j].id = j;
}
@ -2854,21 +2867,16 @@ static int rdbSaveStringObjectRaw(FILE *fp, robj *obj) {
static int rdbSaveStringObject(FILE *fp, robj *obj) {
int retval;
if (obj->storage == REDIS_VM_MEMORY &&
obj->encoding != REDIS_ENCODING_RAW)
{
/* Avoid incr/decr ref count business when possible.
* This plays well with copy-on-write given that we are probably
* in a child process (BGSAVE). Also this makes sure key objects
* of swapped objects are not incRefCount-ed (an assert does not allow
* this in order to avoid bugs) */
if (obj->encoding != REDIS_ENCODING_RAW) {
obj = getDecodedObject(obj);
retval = rdbSaveStringObjectRaw(fp,obj);
decrRefCount(obj);
} else {
/* This is a fast path when we are sure the object is not encoded.
* Note that's any *faster* actually as we needed to add the conditional
* but because this may happen in a background process we don't want
* to touch the object fields with incr/decrRefCount in order to
* preveny copy on write of pages.
*
* Also incrRefCount() will have a failing assert() if we try to call
* it against an object with storage != REDIS_VM_MEMORY. */
retval = rdbSaveStringObjectRaw(fp,obj);
}
return retval;
@ -6670,7 +6678,12 @@ static int fwriteBulk(FILE *fp, robj *obj) {
char buf[128];
int decrrc = 0;
if (obj->storage == REDIS_VM_MEMORY && obj->encoding != REDIS_ENCODING_RAW){
/* Avoid the incr/decr ref count business if possible to help
* copy-on-write (we are often in a child process when this function
* is called).
* Also makes sure that key objects don't get incrRefCount-ed when VM
* is enabled */
if (obj->encoding != REDIS_ENCODING_RAW) {
obj = getDecodedObject(obj);
decrrc = 1;
}