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Group MEMORY command related APIs together in the source code.

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This commit is contained in:
antirez 2016-09-16 10:11:52 +02:00
parent adcfb77b5b
commit 123891dbbf
1 changed files with 53 additions and 53 deletions
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106
src/object.c
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@ -692,7 +692,7 @@ char *strEncoding(int encoding) {
}
}
/* ========================== Objects introspection ========================= */
/* =========================== Memory introspection ========================== */
/* Returns the size in bytes consumed by the key's value in RAM.
* Note that the returned value is just an approximation, especially in the
@ -792,58 +792,6 @@ size_t objectComputeSize(robj *o, size_t sample_size) {
return asize;
}
/* ======================= The OBJECT and MEMORY commands =================== */
/* This is a helper function for the OBJECT command. We need to lookup keys
* without any modification of LRU or other parameters. */
robj *objectCommandLookup(client *c, robj *key) {
dictEntry *de;
if ((de = dictFind(c->db->dict,key->ptr)) == NULL) return NULL;
return (robj*) dictGetVal(de);
}
robj *objectCommandLookupOrReply(client *c, robj *key, robj *reply) {
robj *o = objectCommandLookup(c,key);
if (!o) addReply(c, reply);
return o;
}
/* Object command allows to inspect the internals of an Redis Object.
* Usage: OBJECT <refcount|encoding|idletime> <key> */
void objectCommand(client *c) {
robj *o;
if (!strcasecmp(c->argv[1]->ptr,"refcount") && c->argc == 3) {
if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nullbulk))
== NULL) return;
addReplyLongLong(c,o->refcount);
} else if (!strcasecmp(c->argv[1]->ptr,"encoding") && c->argc == 3) {
if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nullbulk))
== NULL) return;
addReplyBulkCString(c,strEncoding(o->encoding));
} else if (!strcasecmp(c->argv[1]->ptr,"idletime") && c->argc == 3) {
if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nullbulk))
== NULL) return;
if (server.maxmemory_policy & MAXMEMORY_FLAG_LFU) {
addReplyError(c,"An LFU maxmemory policy is selected, idle time not tracked. Please note that when switching between policies at runtime LRU and LFU data will take some time to adjust.");
return;
}
addReplyLongLong(c,estimateObjectIdleTime(o)/1000);
} else if (!strcasecmp(c->argv[1]->ptr,"freq") && c->argc == 3) {
if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nullbulk))
== NULL) return;
if (server.maxmemory_policy & MAXMEMORY_FLAG_LRU) {
addReplyError(c,"An LRU maxmemory policy is selected, access frequency not tracked. Please note that when switching between policies at runtime LRU and LFU data will take some time to adjust.");
return;
}
addReplyLongLong(c,o->lru&255);
} else {
addReplyError(c,"Syntax error. Try OBJECT (refcount|encoding|idletime|freq)");
}
}
/* Release data obtained with getMemoryOverheadData(). */
void freeMemoryOverheadData(struct redisMemOverhead *mh) {
zfree(mh->db);
@ -945,6 +893,58 @@ struct redisMemOverhead *getMemoryOverheadData(void) {
return mh;
}
/* ======================= The OBJECT and MEMORY commands =================== */
/* This is a helper function for the OBJECT command. We need to lookup keys
* without any modification of LRU or other parameters. */
robj *objectCommandLookup(client *c, robj *key) {
dictEntry *de;
if ((de = dictFind(c->db->dict,key->ptr)) == NULL) return NULL;
return (robj*) dictGetVal(de);
}
robj *objectCommandLookupOrReply(client *c, robj *key, robj *reply) {
robj *o = objectCommandLookup(c,key);
if (!o) addReply(c, reply);
return o;
}
/* Object command allows to inspect the internals of an Redis Object.
* Usage: OBJECT <refcount|encoding|idletime> <key> */
void objectCommand(client *c) {
robj *o;
if (!strcasecmp(c->argv[1]->ptr,"refcount") && c->argc == 3) {
if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nullbulk))
== NULL) return;
addReplyLongLong(c,o->refcount);
} else if (!strcasecmp(c->argv[1]->ptr,"encoding") && c->argc == 3) {
if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nullbulk))
== NULL) return;
addReplyBulkCString(c,strEncoding(o->encoding));
} else if (!strcasecmp(c->argv[1]->ptr,"idletime") && c->argc == 3) {
if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nullbulk))
== NULL) return;
if (server.maxmemory_policy & MAXMEMORY_FLAG_LFU) {
addReplyError(c,"An LFU maxmemory policy is selected, idle time not tracked. Please note that when switching between policies at runtime LRU and LFU data will take some time to adjust.");
return;
}
addReplyLongLong(c,estimateObjectIdleTime(o)/1000);
} else if (!strcasecmp(c->argv[1]->ptr,"freq") && c->argc == 3) {
if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nullbulk))
== NULL) return;
if (server.maxmemory_policy & MAXMEMORY_FLAG_LRU) {
addReplyError(c,"An LRU maxmemory policy is selected, access frequency not tracked. Please note that when switching between policies at runtime LRU and LFU data will take some time to adjust.");
return;
}
addReplyLongLong(c,o->lru&255);
} else {
addReplyError(c,"Syntax error. Try OBJECT (refcount|encoding|idletime|freq)");
}
}
/* The memory command will eventually be a complete interface for the
* memory introspection capabilities of Redis.
*