Merge remote branch 'origin/unstable' into unstable

TODO

@@ -52,42 +52,18 @@ OPTIMIZATIONS
 * Redis big lists as linked lists of small ziplists?
   Possibly a simple heuristic that join near nodes when some node gets smaller than the low_level, and split it into two if gets bigger than high_level.
 
-REPORTING
-=========
-
-* Better INFO output with sections.
-
 RANDOM
 ======
 
+* Server should abort when getcwd() fails if there is some kind of persistence configured. Check this in the cron loop.
 * Clients should be closed as far as the output buffer list is bigger than a given number of elements (configurable in redis.conf)
 * Should the redis default configuration, and the default redis.conf, just bind 127.0.0.1?
 
 KNOWN BUGS
 ==========
 
-* What happens in the following scenario:
-    1) We are reading an AOF file.
-    2) SETEX FOO 5 BAR
-    3) APPEND FOO ZAP
-    What happens if between 1 and 2 for some reason (system under huge load
-    or alike) too many time passes? We should prevent expires while the
-    AOF is loading.
 * #519: Slave may have expired keys that were never read in the master (so a DEL
   is not sent in the replication channel) but are already expired since
   a lot of time. Maybe after a given delay that is undoubltly greater than
   the replication link latency we should expire this key on the slave on
   access?
-
-DISKSTORE TODO
-==============
-
-* Fix FLUSHALL/FLUSHDB: the queue of pending reads/writes should be handled.
-* Check that 00/00 and ff/ff exist at startup, otherwise exit with error.
-* Implement sync flush option, where data is written synchronously on disk when a command is executed.
-* Implement MULTI/EXEC as transaction abstract API to diskstore.c, with transaction_start, transaction_end, and a journal to recover.
-* Stop BGSAVE thread on shutdown and any other condition where the child is killed during normal bgsave.
-* Fix RANDOMKEY to really do something interesting
-* Fix DBSIZE to really do something interesting
-* Add a DEBUG command to check if an entry is or not in memory currently
-* dscache.c near 236, kobj = createStringObject... we could use static obj.

src/Makefile

@@ -169,7 +169,7 @@ dependencies:
 ../deps/jemalloc/lib/libjemalloc.a:
 	cd ../deps/jemalloc && ./configure $(JEMALLOC_CFLAGS) --with-jemalloc-prefix=je_ --enable-cc-silence && $(MAKE) lib/libjemalloc.a
 
-redis-server: $(OBJ)
+redis-server: dependencies $(OBJ)
 	$(QUIET_LINK)$(CC) -o $(PRGNAME) $(CCOPT) $(DEBUG) $(OBJ) $(CCLINK) $(ALLOC_LINK) ../deps/lua/src/liblua.a
 
 redis-benchmark: dependencies $(BENCHOBJ)

src/config.c

@@ -508,12 +508,11 @@ void configGetCommand(redisClient *c) {
     if (stringmatch(pattern,"dir",0)) {
         char buf[1024];
 
-        addReplyBulkCString(c,"dir");
-        if (getcwd(buf,sizeof(buf)) == NULL) {
+        if (getcwd(buf,sizeof(buf)) == NULL)
             buf[0] = '\0';
-        } else {
-            addReplyBulkCString(c,buf);
-        }
+
+        addReplyBulkCString(c,"dir");
+        addReplyBulkCString(c,buf);
         matches++;
     }
     if (stringmatch(pattern,"dbfilename",0)) {

src/t_hash.c

@@ -403,8 +403,11 @@ void hdelCommand(redisClient *c) {
 
     for (j = 2; j < c->argc; j++) {
         if (hashTypeDelete(o,c->argv[j])) {
-            if (hashTypeLength(o) == 0) dbDelete(c->db,c->argv[1]);
             deleted++;
+            if (hashTypeLength(o) == 0) {
+                dbDelete(c->db,c->argv[1]);
+                break;
+            }
         }
     }
     if (deleted) {

tests/unit/type/hash.tcl

@@ -235,6 +235,13 @@ start_server {tags {"hash"}} {
         r hgetall myhash
     } {b 2}
 
+    test {HDEL - hash becomes empty before deleting all specified fields} {
+        r del myhash
+        r hmset myhash a 1 b 2 c 3
+        assert_equal 3 [r hdel myhash a b c d e]
+        assert_equal 0 [r exists myhash]
+    }
+
     test {HEXISTS} {
         set rv {}
         set k [lindex [array names smallhash *] 0]