Merge branch '2.2' of git://github.com/antirez/redis into 2.2

redis.conf

@@ -369,8 +369,8 @@ vm-max-threads 4
 # have at max a given numer of elements, and the biggest element does not
 # exceed a given threshold. You can configure this limits with the following
 # configuration directives.
-hash-max-zipmap-entries 64
-hash-max-zipmap-value 512
+hash-max-zipmap-entries 512
+hash-max-zipmap-value 64
 
 # Similarly to hashes, small lists are also encoded in a special way in order
 # to save a lot of space. The special representation is only used when

src/db.c

@@ -453,6 +453,8 @@ void propagateExpire(redisDb *db, robj *key) {
 int expireIfNeeded(redisDb *db, robj *key) {
     time_t when = getExpire(db,key);
 
+    if (when < 0) return 0; /* No expire for this key */
+
     /* If we are running in the context of a slave, return ASAP:
      * the slave key expiration is controlled by the master that will
      * send us synthesized DEL operations for expired keys.
@@ -464,8 +466,6 @@ int expireIfNeeded(redisDb *db, robj *key) {
         return time(NULL) > when;
     }
 
-    if (when < 0) return 0;
-
     /* Return when this key has not expired */
     if (time(NULL) <= when) return 0;
 

src/networking.c

@@ -821,3 +821,22 @@ void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask) {
     }
     processInputBuffer(c);
 }
+
+void getClientsMaxBuffers(unsigned long *longest_output_list,
+                          unsigned long *biggest_input_buffer) {
+    redisClient *c;
+    listNode *ln;
+    listIter li;
+    unsigned long lol = 0, bib = 0;
+
+    listRewind(server.clients,&li);
+    while ((ln = listNext(&li)) != NULL) {
+        c = listNodeValue(ln);
+
+        if (listLength(c->reply) > lol) lol = listLength(c->reply);
+        if (sdslen(c->querybuf) > bib) bib = sdslen(c->querybuf);
+    }
+    *longest_output_list = lol;
+    *biggest_input_buffer = bib;
+}
+

src/redis.c

@@ -1141,9 +1141,11 @@ sds genRedisInfoString(void) {
     int j;
     char hmem[64];
     struct rusage self_ru, c_ru;
+    unsigned long lol, bib;
 
     getrusage(RUSAGE_SELF, &self_ru);
     getrusage(RUSAGE_CHILDREN, &c_ru);
+    getClientsMaxBuffers(&lol,&bib);
 
     bytesToHuman(hmem,zmalloc_used_memory());
     info = sdscatprintf(sdsempty(),
@@ -1162,6 +1164,8 @@ sds genRedisInfoString(void) {
         "used_cpu_user_childrens:%.2f\r\n"
         "connected_clients:%d\r\n"
         "connected_slaves:%d\r\n"
+        "client_longest_output_list:%lu\r\n"
+        "client_biggest_input_buf:%lu\r\n"
         "blocked_clients:%d\r\n"
         "used_memory:%zu\r\n"
         "used_memory_human:%s\r\n"
@@ -1201,6 +1205,7 @@ sds genRedisInfoString(void) {
         (float)c_ru.ru_stime.tv_sec+(float)c_ru.ru_stime.tv_usec/1000000,
         listLength(server.clients)-listLength(server.slaves),
         listLength(server.slaves),
+        lol, bib,
         server.bpop_blocked_clients,
         zmalloc_used_memory(),
         hmem,
@@ -1313,6 +1318,19 @@ sds genRedisInfoString(void) {
             eta
         );
     }
+
+    info = sdscat(info,"allocation_stats:");
+    for (j = 0; j <= ZMALLOC_MAX_ALLOC_STAT; j++) {
+        size_t count = zmalloc_allocations_for_size(j);
+        if (count) {
+            if (info[sdslen(info)-1] != ':') info = sdscatlen(info,",",1);
+            info = sdscatprintf(info,"%s%d=%zu",
+                (j == ZMALLOC_MAX_ALLOC_STAT) ? ">=" : "",
+                j,count);
+        }
+    }
+    info = sdscat(info,"\r\n");
+
     for (j = 0; j < server.dbnum; j++) {
         long long keys, vkeys;
 

src/redis.h

@@ -189,8 +189,8 @@
 #define APPENDFSYNC_EVERYSEC 2
 
 /* Zip structure related defaults */
-#define REDIS_HASH_MAX_ZIPMAP_ENTRIES 64
-#define REDIS_HASH_MAX_ZIPMAP_VALUE 512
+#define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
+#define REDIS_HASH_MAX_ZIPMAP_VALUE 64
 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
 #define REDIS_SET_MAX_INTSET_ENTRIES 512
@@ -656,6 +656,8 @@ void addReplyDouble(redisClient *c, double d);
 void addReplyLongLong(redisClient *c, long long ll);
 void addReplyMultiBulkLen(redisClient *c, long length);
 void *dupClientReplyValue(void *o);
+void getClientsMaxBuffers(unsigned long *longest_output_list,
+                          unsigned long *biggest_input_buffer);
 
 #ifdef __GNUC__
 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)

src/zmalloc.c

@@ -33,6 +33,7 @@
 #include <string.h>
 #include <pthread.h>
 #include "config.h"
+#include "zmalloc.h"
 
 #ifdef HAVE_MALLOC_SIZE
 #define PREFIX_SIZE (0)
@@ -52,19 +53,22 @@
 #define free(ptr) tc_free(ptr)
 #endif
 
-#define increment_used_memory(__n) do { \
+#define update_zmalloc_stat_alloc(__n,__size) do { \
     size_t _n = (__n); \
+    size_t _stat_slot = (__size < ZMALLOC_MAX_ALLOC_STAT) ? __size : ZMALLOC_MAX_ALLOC_STAT; \
     if (_n&(sizeof(long)-1)) _n += sizeof(long)-(_n&(sizeof(long)-1)); \
     if (zmalloc_thread_safe) { \
         pthread_mutex_lock(&used_memory_mutex);  \
         used_memory += _n; \
+        zmalloc_allocations[_stat_slot]++; \
         pthread_mutex_unlock(&used_memory_mutex); \
     } else { \
         used_memory += _n; \
+        zmalloc_allocations[_stat_slot]++; \
     } \
 } while(0)
 
-#define decrement_used_memory(__n) do { \
+#define update_zmalloc_stat_free(__n) do { \
     size_t _n = (__n); \
     if (_n&(sizeof(long)-1)) _n += sizeof(long)-(_n&(sizeof(long)-1)); \
     if (zmalloc_thread_safe) { \
@@ -79,6 +83,8 @@
 static size_t used_memory = 0;
 static int zmalloc_thread_safe = 0;
 pthread_mutex_t used_memory_mutex = PTHREAD_MUTEX_INITIALIZER;
+/* Note that malloc_allocations elements are initialized to zero by C */
+size_t zmalloc_allocations[ZMALLOC_MAX_ALLOC_STAT+1];
 
 static void zmalloc_oom(size_t size) {
     fprintf(stderr, "zmalloc: Out of memory trying to allocate %zu bytes\n",
@@ -92,11 +98,11 @@ void *zmalloc(size_t size) {
 
     if (!ptr) zmalloc_oom(size);
 #ifdef HAVE_MALLOC_SIZE
-    increment_used_memory(redis_malloc_size(ptr));
+    update_zmalloc_stat_alloc(redis_malloc_size(ptr),size);
     return ptr;
 #else
     *((size_t*)ptr) = size;
-    increment_used_memory(size+PREFIX_SIZE);
+    update_zmalloc_stat_alloc(size+PREFIX_SIZE,size);
     return (char*)ptr+PREFIX_SIZE;
 #endif
 }
@@ -106,11 +112,11 @@ void *zcalloc(size_t size) {
 
     if (!ptr) zmalloc_oom(size);
 #ifdef HAVE_MALLOC_SIZE
-    increment_used_memory(redis_malloc_size(ptr));
+    update_zmalloc_stat_alloc(redis_malloc_size(ptr),size);
     return ptr;
 #else
     *((size_t*)ptr) = size;
-    increment_used_memory(size+PREFIX_SIZE);
+    update_zmalloc_stat_alloc(size+PREFIX_SIZE,size);
     return (char*)ptr+PREFIX_SIZE;
 #endif
 }
@@ -128,8 +134,8 @@ void *zrealloc(void *ptr, size_t size) {
     newptr = realloc(ptr,size);
     if (!newptr) zmalloc_oom(size);
 
-    decrement_used_memory(oldsize);
-    increment_used_memory(redis_malloc_size(newptr));
+    update_zmalloc_stat_free(oldsize);
+    update_zmalloc_stat_alloc(redis_malloc_size(newptr),size);
     return newptr;
 #else
     realptr = (char*)ptr-PREFIX_SIZE;
@@ -138,8 +144,8 @@ void *zrealloc(void *ptr, size_t size) {
     if (!newptr) zmalloc_oom(size);
 
     *((size_t*)newptr) = size;
-    decrement_used_memory(oldsize);
-    increment_used_memory(size);
+    update_zmalloc_stat_free(oldsize);
+    update_zmalloc_stat_alloc(size,size);
     return (char*)newptr+PREFIX_SIZE;
 #endif
 }
@@ -152,12 +158,12 @@ void zfree(void *ptr) {
 
     if (ptr == NULL) return;
 #ifdef HAVE_MALLOC_SIZE
-    decrement_used_memory(redis_malloc_size(ptr));
+    update_zmalloc_stat_free(redis_malloc_size(ptr));
     free(ptr);
 #else
     realptr = (char*)ptr-PREFIX_SIZE;
     oldsize = *((size_t*)realptr);
-    decrement_used_memory(oldsize+PREFIX_SIZE);
+    update_zmalloc_stat_free(oldsize+PREFIX_SIZE);
     free(realptr);
 #endif
 }
@@ -179,6 +185,11 @@ size_t zmalloc_used_memory(void) {
     return um;
 }
 
+size_t zmalloc_allocations_for_size(size_t size) {
+    if (size > ZMALLOC_MAX_ALLOC_STAT) return 0;
+    return zmalloc_allocations[size];
+}
+
 void zmalloc_enable_thread_safeness(void) {
     zmalloc_thread_safe = 1;
 }

src/zmalloc.h

@@ -40,5 +40,8 @@ size_t zmalloc_used_memory(void);
 void zmalloc_enable_thread_safeness(void);
 float zmalloc_get_fragmentation_ratio(void);
 size_t zmalloc_get_rss(void);
+size_t zmalloc_allocations_for_size(size_t size);
+
+#define ZMALLOC_MAX_ALLOC_STAT 256
 
 #endif /* _ZMALLOC_H */