* POSSIBILITY OF SUCH DAMAGE.
*/
-#define REDIS_VERSION "0.101"
+#define REDIS_VERSION "1.001"
#include "fmacros.h"
+#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define __USE_POSIX199309
#include <signal.h>
+
+#ifdef HAVE_BACKTRACE
#include <execinfo.h>
#include <ucontext.h>
+#endif /* HAVE_BACKTRACE */
+
#include <sys/wait.h>
#include <errno.h>
#include <assert.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <limits.h>
-#include <execinfo.h>
#include "redis.h"
#include "ae.h" /* Event driven programming library */
#include "lzf.h" /* LZF compression library */
#include "pqsort.h" /* Partial qsort for SORT+LIMIT */
-#include "config.h"
-
/* Error codes */
#define REDIS_OK 0
#define REDIS_ERR -1
#define REDIS_SET 2
#define REDIS_HASH 3
+/* Objects encoding */
+#define REDIS_ENCODING_RAW 0 /* Raw representation */
+#define REDIS_ENCODING_INT 1 /* Encoded as integer */
+
/* Object types only used for dumping to disk */
#define REDIS_EXPIRETIME 253
#define REDIS_SELECTDB 254
/* A redis object, that is a type able to hold a string / list / set */
typedef struct redisObject {
void *ptr;
- int type;
+ unsigned char type;
+ unsigned char encoding;
+ unsigned char notused[2];
int refcount;
} robj;
redisDb *db;
int dictid;
sds querybuf;
- robj **argv;
- int argc;
+ robj **argv, **mbargv;
+ int argc, mbargc;
int bulklen; /* bulk read len. -1 if not in bulk read mode */
+ int multibulk; /* multi bulk command format active */
list *reply;
int sentlen;
time_t lastinteraction; /* time of the last interaction, used for timeout */
redisClient *master; /* client that is master for this slave */
int replstate;
unsigned int maxclients;
- unsigned int maxmemory;
+ unsigned long maxmemory;
/* Sort parameters - qsort_r() is only available under BSD so we
* have to take this state global, in order to pass it to sortCompare() */
int sort_desc;
static void replicationFeedSlaves(list *slaves, struct redisCommand *cmd, int dictid, robj **argv, int argc);
static int syncWithMaster(void);
static robj *tryObjectSharing(robj *o);
+static int tryObjectEncoding(robj *o);
+static robj *getDecodedObject(const robj *o);
static int removeExpire(redisDb *db, robj *key);
static int expireIfNeeded(redisDb *db, robj *key);
static int deleteIfVolatile(redisDb *db, robj *key);
static int deleteKey(redisDb *db, robj *key);
static time_t getExpire(redisDb *db, robj *key);
static int setExpire(redisDb *db, robj *key, time_t when);
-static void updateSalvesWaitingBgsave(int bgsaveerr);
+static void updateSlavesWaitingBgsave(int bgsaveerr);
static void freeMemoryIfNeeded(void);
static int processCommand(redisClient *c);
static void setupSigSegvAction(void);
+static void rdbRemoveTempFile(pid_t childpid);
+static size_t stringObjectLen(robj *o);
+static void processInputBuffer(redisClient *c);
static void authCommand(redisClient *c);
static void pingCommand(redisClient *c);
static void mgetCommand(redisClient *c);
static void monitorCommand(redisClient *c);
static void expireCommand(redisClient *c);
-static void getSetCommand(redisClient *c);
+static void getsetCommand(redisClient *c);
static void ttlCommand(redisClient *c);
static void slaveofCommand(redisClient *c);
static void debugCommand(redisClient *c);
+static void msetCommand(redisClient *c);
+static void msetnxCommand(redisClient *c);
+
/*================================= Globals ================================= */
/* Global vars */
{"smembers",sinterCommand,2,REDIS_CMD_INLINE},
{"incrby",incrbyCommand,3,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM},
{"decrby",decrbyCommand,3,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM},
- {"getset",getSetCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM},
+ {"getset",getsetCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM},
+ {"mset",msetCommand,-3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM},
+ {"msetnx",msetnxCommand,-3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM},
{"randomkey",randomkeyCommand,1,REDIS_CMD_INLINE},
{"select",selectCommand,2,REDIS_CMD_INLINE},
{"move",moveCommand,3,REDIS_CMD_INLINE},
decrRefCount(val);
}
-static int dictSdsKeyCompare(void *privdata, const void *key1,
+static int dictObjKeyCompare(void *privdata, const void *key1,
const void *key2)
{
const robj *o1 = key1, *o2 = key2;
return sdsDictKeyCompare(privdata,o1->ptr,o2->ptr);
}
-static unsigned int dictSdsHash(const void *key) {
+static unsigned int dictObjHash(const void *key) {
const robj *o = key;
return dictGenHashFunction(o->ptr, sdslen((sds)o->ptr));
}
+static int dictEncObjKeyCompare(void *privdata, const void *key1,
+ const void *key2)
+{
+ const robj *o1 = key1, *o2 = key2;
+
+ if (o1->encoding == REDIS_ENCODING_RAW &&
+ o2->encoding == REDIS_ENCODING_RAW)
+ return sdsDictKeyCompare(privdata,o1->ptr,o2->ptr);
+ else {
+ robj *dec1, *dec2;
+ int cmp;
+
+ dec1 = o1->encoding != REDIS_ENCODING_RAW ?
+ getDecodedObject(o1) : (robj*)o1;
+ dec2 = o2->encoding != REDIS_ENCODING_RAW ?
+ getDecodedObject(o2) : (robj*)o2;
+ cmp = sdsDictKeyCompare(privdata,dec1->ptr,dec2->ptr);
+ if (dec1 != o1) decrRefCount(dec1);
+ if (dec2 != o2) decrRefCount(dec2);
+ return cmp;
+ }
+}
+
+static unsigned int dictEncObjHash(const void *key) {
+ const robj *o = key;
+
+ if (o->encoding == REDIS_ENCODING_RAW)
+ return dictGenHashFunction(o->ptr, sdslen((sds)o->ptr));
+ else {
+ robj *dec = getDecodedObject(o);
+ unsigned int hash = dictGenHashFunction(dec->ptr, sdslen((sds)dec->ptr));
+ decrRefCount(dec);
+ return hash;
+ }
+}
+
static dictType setDictType = {
- dictSdsHash, /* hash function */
+ dictEncObjHash, /* hash function */
NULL, /* key dup */
NULL, /* val dup */
- dictSdsKeyCompare, /* key compare */
+ dictEncObjKeyCompare, /* key compare */
dictRedisObjectDestructor, /* key destructor */
NULL /* val destructor */
};
static dictType hashDictType = {
- dictSdsHash, /* hash function */
+ dictObjHash, /* hash function */
NULL, /* key dup */
NULL, /* val dup */
- dictSdsKeyCompare, /* key compare */
+ dictObjKeyCompare, /* key compare */
dictRedisObjectDestructor, /* key destructor */
dictRedisObjectDestructor /* val destructor */
};
size = dictSlots(server.db[j].dict);
used = dictSize(server.db[j].dict);
vkeys = dictSize(server.db[j].expires);
- if (!(loops % 5) && used > 0) {
- redisLog(REDIS_DEBUG,"DB %d: %d keys (%d volatile) in %d slots HT.",j,used,vkeys,size);
+ if (!(loops % 5) && (used || vkeys)) {
+ redisLog(REDIS_DEBUG,"DB %d: %lld keys (%lld volatile) in %lld slots HT.",j,used,vkeys,size);
/* dictPrintStats(server.dict); */
}
}
/* Show information about connected clients */
if (!(loops % 5)) {
- redisLog(REDIS_DEBUG,"%d clients connected (%d slaves), %zu bytes in use",
+ redisLog(REDIS_DEBUG,"%d clients connected (%d slaves), %zu bytes in use, %d shared objects",
listLength(server.clients)-listLength(server.slaves),
listLength(server.slaves),
server.usedmemory,
} else {
redisLog(REDIS_WARNING,
"Background saving terminated by signal");
+ rdbRemoveTempFile(server.bgsavechildpid);
}
server.bgsaveinprogress = 0;
server.bgsavechildpid = -1;
- updateSalvesWaitingBgsave(exitcode == 0 ? REDIS_OK : REDIS_ERR);
+ updateSlavesWaitingBgsave(exitcode == 0 ? REDIS_OK : REDIS_ERR);
}
} else {
/* If there is not a background saving in progress check if
server.dbfilename = "dump.rdb";
server.requirepass = NULL;
server.shareobjects = 0;
+ server.sharingpoolsize = 1024;
server.maxclients = 0;
server.maxmemory = 0;
ResetServerSaveParams();
server.el = aeCreateEventLoop();
server.db = zmalloc(sizeof(redisDb)*server.dbnum);
server.sharingpool = dictCreate(&setDictType,NULL);
- server.sharingpoolsize = 1024;
if (!server.db || !server.clients || !server.slaves || !server.monitors || !server.el || !server.objfreelist)
oom("server initialization"); /* Fatal OOM */
server.fd = anetTcpServer(server.neterr, server.port, server.bindaddr);
} else if (!strcasecmp(argv[0],"maxclients") && argc == 2) {
server.maxclients = atoi(argv[1]);
} else if (!strcasecmp(argv[0],"maxmemory") && argc == 2) {
- server.maxmemory = atoi(argv[1]);
+ server.maxmemory = strtoll(argv[1], NULL, 10);
} else if (!strcasecmp(argv[0],"slaveof") && argc == 3) {
server.masterhost = sdsnew(argv[1]);
server.masterport = atoi(argv[2]);
for (j = 0; j < c->argc; j++)
decrRefCount(c->argv[j]);
+ for (j = 0; j < c->mbargc; j++)
+ decrRefCount(c->mbargv[j]);
c->argc = 0;
+ c->mbargc = 0;
}
static void freeClient(redisClient *c) {
server.replstate = REDIS_REPL_CONNECT;
}
zfree(c->argv);
+ zfree(c->mbargv);
zfree(c);
}
static void resetClient(redisClient *c) {
freeClientArgv(c);
c->bulklen = -1;
+ c->multibulk = 0;
}
/* If this function gets called we already read a whole
/* Free some memory if needed (maxmemory setting) */
if (server.maxmemory) freeMemoryIfNeeded();
+ /* Handle the multi bulk command type. This is an alternative protocol
+ * supported by Redis in order to receive commands that are composed of
+ * multiple binary-safe "bulk" arguments. The latency of processing is
+ * a bit higher but this allows things like multi-sets, so if this
+ * protocol is used only for MSET and similar commands this is a big win. */
+ if (c->multibulk == 0 && c->argc == 1 && ((char*)(c->argv[0]->ptr))[0] == '*') {
+ c->multibulk = atoi(((char*)c->argv[0]->ptr)+1);
+ if (c->multibulk <= 0) {
+ resetClient(c);
+ return 1;
+ } else {
+ decrRefCount(c->argv[c->argc-1]);
+ c->argc--;
+ return 1;
+ }
+ } else if (c->multibulk) {
+ if (c->bulklen == -1) {
+ if (((char*)c->argv[0]->ptr)[0] != '$') {
+ addReplySds(c,sdsnew("-ERR multi bulk protocol error\r\n"));
+ resetClient(c);
+ return 1;
+ } else {
+ int bulklen = atoi(((char*)c->argv[0]->ptr)+1);
+ decrRefCount(c->argv[0]);
+ if (bulklen < 0 || bulklen > 1024*1024*1024) {
+ c->argc--;
+ addReplySds(c,sdsnew("-ERR invalid bulk write count\r\n"));
+ resetClient(c);
+ return 1;
+ }
+ c->argc--;
+ c->bulklen = bulklen+2; /* add two bytes for CR+LF */
+ /*
+ if (sdslen(c->querybuf) > 0)
+ processInputBuffer(c);
+ */
+ return 1;
+ }
+ } else {
+ c->mbargv = zrealloc(c->mbargv,(sizeof(robj*))*(c->mbargc+1));
+ c->mbargv[c->mbargc] = c->argv[0];
+ c->mbargc++;
+ c->argc--;
+ c->multibulk--;
+ if (c->multibulk == 0) {
+ robj **auxargv;
+ int auxargc;
+
+ /* Here we need to swap the multi-bulk argc/argv with the
+ * normal argc/argv of the client structure. */
+ auxargv = c->argv;
+ c->argv = c->mbargv;
+ c->mbargv = auxargv;
+
+ auxargc = c->argc;
+ c->argc = c->mbargc;
+ c->mbargc = auxargc;
+
+ /* We need to set bulklen to something different than -1
+ * in order for the code below to process the command without
+ * to try to read the last argument of a bulk command as
+ * a special argument. */
+ c->bulklen = 0;
+ /* continue below and process the command */
+ } else {
+ c->bulklen = -1;
+ /*
+ if (sdslen(c->querybuf) > 0)
+ processInputBuffer(c);
+ */
+ return 1;
+ }
+ }
+ }
+ /* -- end of multi bulk commands processing -- */
+
/* The QUIT command is handled as a special case. Normal command
* procs are unable to close the client connection safely */
if (!strcasecmp(c->argv[0]->ptr,"quit")) {
for(j = 1; j < c->argc; j++)
c->argv[j] = tryObjectSharing(c->argv[j]);
}
+ /* Let's try to encode the bulk object to save space. */
+ if (cmd->flags & REDIS_CMD_BULK)
+ tryObjectEncoding(c->argv[c->argc-1]);
+
/* Check if the user is authenticated */
if (server.requirepass && !c->authenticated && cmd->proc != authCommand) {
addReplySds(c,sdsnew("-ERR operation not permitted\r\n"));
robj *lenobj;
lenobj = createObject(REDIS_STRING,
- sdscatprintf(sdsempty(),"%d\r\n",sdslen(argv[j]->ptr)));
+ sdscatprintf(sdsempty(),"%d\r\n",
+ stringObjectLen(argv[j])));
lenobj->refcount = 0;
outv[outc++] = lenobj;
}
if (outv != static_outv) zfree(outv);
}
-static void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask) {
- redisClient *c = (redisClient*) privdata;
- char buf[REDIS_IOBUF_LEN];
- int nread;
- REDIS_NOTUSED(el);
- REDIS_NOTUSED(mask);
-
- nread = read(fd, buf, REDIS_IOBUF_LEN);
- if (nread == -1) {
- if (errno == EAGAIN) {
- nread = 0;
- } else {
- redisLog(REDIS_DEBUG, "Reading from client: %s",strerror(errno));
- freeClient(c);
- return;
- }
- } else if (nread == 0) {
- redisLog(REDIS_DEBUG, "Client closed connection");
- freeClient(c);
- return;
- }
- if (nread) {
- c->querybuf = sdscatlen(c->querybuf, buf, nread);
- c->lastinteraction = time(NULL);
- } else {
- return;
- }
-
+static void processInputBuffer(redisClient *c) {
again:
if (c->bulklen == -1) {
/* Read the first line of the query */
/* Execute the command. If the client is still valid
* after processCommand() return and there is something
* on the query buffer try to process the next command. */
- if (processCommand(c) && sdslen(c->querybuf)) goto again;
+ if (c->argc && processCommand(c) && sdslen(c->querybuf)) goto again;
return;
} else if (sdslen(c->querybuf) >= REDIS_REQUEST_MAX_SIZE) {
redisLog(REDIS_DEBUG, "Client protocol error");
c->argv[c->argc] = createStringObject(c->querybuf,c->bulklen-2);
c->argc++;
c->querybuf = sdsrange(c->querybuf,c->bulklen,-1);
- processCommand(c);
+ /* Process the command. If the client is still valid after
+ * the processing and there is more data in the buffer
+ * try to parse it. */
+ if (processCommand(c) && sdslen(c->querybuf)) goto again;
return;
}
}
}
+static void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask) {
+ redisClient *c = (redisClient*) privdata;
+ char buf[REDIS_IOBUF_LEN];
+ int nread;
+ REDIS_NOTUSED(el);
+ REDIS_NOTUSED(mask);
+
+ nread = read(fd, buf, REDIS_IOBUF_LEN);
+ if (nread == -1) {
+ if (errno == EAGAIN) {
+ nread = 0;
+ } else {
+ redisLog(REDIS_DEBUG, "Reading from client: %s",strerror(errno));
+ freeClient(c);
+ return;
+ }
+ } else if (nread == 0) {
+ redisLog(REDIS_DEBUG, "Client closed connection");
+ freeClient(c);
+ return;
+ }
+ if (nread) {
+ c->querybuf = sdscatlen(c->querybuf, buf, nread);
+ c->lastinteraction = time(NULL);
+ } else {
+ return;
+ }
+ processInputBuffer(c);
+}
+
static int selectDb(redisClient *c, int id) {
if (id < 0 || id >= server.dbnum)
return REDIS_ERR;
c->argc = 0;
c->argv = NULL;
c->bulklen = -1;
+ c->multibulk = 0;
+ c->mbargc = 0;
+ c->mbargv = NULL;
c->sentlen = 0;
c->flags = 0;
c->lastinteraction = time(NULL);
c->replstate == REDIS_REPL_ONLINE) &&
aeCreateFileEvent(server.el, c->fd, AE_WRITABLE,
sendReplyToClient, c, NULL) == AE_ERR) return;
+ if (obj->encoding != REDIS_ENCODING_RAW) {
+ obj = getDecodedObject(obj);
+ } else {
+ incrRefCount(obj);
+ }
if (!listAddNodeTail(c->reply,obj)) oom("listAddNodeTail");
- incrRefCount(obj);
}
static void addReplySds(redisClient *c, sds s) {
decrRefCount(o);
}
+static void addReplyBulkLen(redisClient *c, robj *obj) {
+ size_t len;
+
+ if (obj->encoding == REDIS_ENCODING_RAW) {
+ len = sdslen(obj->ptr);
+ } else {
+ long n = (long)obj->ptr;
+
+ len = 1;
+ if (n < 0) {
+ len++;
+ n = -n;
+ }
+ while((n = n/10) != 0) {
+ len++;
+ }
+ }
+ addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",len));
+}
+
static void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
int cport, cfd;
char cip[128];
}
if (!o) oom("createObject");
o->type = type;
+ o->encoding = REDIS_ENCODING_RAW;
o->ptr = ptr;
o->refcount = 1;
return o;
}
static void freeStringObject(robj *o) {
- sdsfree(o->ptr);
+ if (o->encoding == REDIS_ENCODING_RAW) {
+ sdsfree(o->ptr);
+ }
}
static void freeListObject(robj *o) {
}
}
+static robj *lookupKey(redisDb *db, robj *key) {
+ dictEntry *de = dictFind(db->dict,key);
+ return de ? dictGetEntryVal(de) : NULL;
+}
+
+static robj *lookupKeyRead(redisDb *db, robj *key) {
+ expireIfNeeded(db,key);
+ return lookupKey(db,key);
+}
+
+static robj *lookupKeyWrite(redisDb *db, robj *key) {
+ deleteIfVolatile(db,key);
+ return lookupKey(db,key);
+}
+
+static int deleteKey(redisDb *db, robj *key) {
+ int retval;
+
+ /* We need to protect key from destruction: after the first dictDelete()
+ * it may happen that 'key' is no longer valid if we don't increment
+ * it's count. This may happen when we get the object reference directly
+ * from the hash table with dictRandomKey() or dict iterators */
+ incrRefCount(key);
+ if (dictSize(db->expires)) dictDelete(db->expires,key);
+ retval = dictDelete(db->dict,key);
+ decrRefCount(key);
+
+ return retval == DICT_OK;
+}
+
/* Try to share an object against the shared objects pool */
static robj *tryObjectSharing(robj *o) {
struct dictEntry *de;
}
}
-static robj *lookupKey(redisDb *db, robj *key) {
- dictEntry *de = dictFind(db->dict,key);
- return de ? dictGetEntryVal(de) : NULL;
+/* Check if the nul-terminated string 's' can be represented by a long
+ * (that is, is a number that fits into long without any other space or
+ * character before or after the digits).
+ *
+ * If so, the function returns REDIS_OK and *longval is set to the value
+ * of the number. Otherwise REDIS_ERR is returned */
+static int isStringRepresentableAsLong(char *s, long *longval) {
+ char buf[32], *endptr;
+ long value;
+ int slen;
+
+ value = strtol(s, &endptr, 10);
+ if (endptr[0] != '\0') return REDIS_ERR;
+ slen = snprintf(buf,32,"%ld",value);
+
+ /* If the number converted back into a string is not identical
+ * then it's not possible to encode the string as integer */
+ if (strlen(buf) != (unsigned)slen || memcmp(buf,s,slen)) return REDIS_ERR;
+ if (longval) *longval = value;
+ return REDIS_OK;
}
-static robj *lookupKeyRead(redisDb *db, robj *key) {
- expireIfNeeded(db,key);
- return lookupKey(db,key);
+/* Try to encode a string object in order to save space */
+static int tryObjectEncoding(robj *o) {
+ long value;
+ sds s = o->ptr;
+
+ if (o->encoding != REDIS_ENCODING_RAW)
+ return REDIS_ERR; /* Already encoded */
+
+ /* It's not save to encode shared objects: shared objects can be shared
+ * everywhere in the "object space" of Redis. Encoded objects can only
+ * appear as "values" (and not, for instance, as keys) */
+ if (o->refcount > 1) return REDIS_ERR;
+
+ /* Currently we try to encode only strings */
+ assert(o->type == REDIS_STRING);
+
+ /* Check if we can represent this string as a long integer */
+ if (isStringRepresentableAsLong(s,&value) == REDIS_ERR) return REDIS_ERR;
+
+ /* Ok, this object can be encoded */
+ o->encoding = REDIS_ENCODING_INT;
+ sdsfree(o->ptr);
+ o->ptr = (void*) value;
+ return REDIS_OK;
}
-static robj *lookupKeyWrite(redisDb *db, robj *key) {
- deleteIfVolatile(db,key);
- return lookupKey(db,key);
+/* Get a decoded version of an encoded object (returned as a new object) */
+static robj *getDecodedObject(const robj *o) {
+ robj *dec;
+
+ assert(o->encoding != REDIS_ENCODING_RAW);
+ if (o->type == REDIS_STRING && o->encoding == REDIS_ENCODING_INT) {
+ char buf[32];
+
+ snprintf(buf,32,"%ld",(long)o->ptr);
+ dec = createStringObject(buf,strlen(buf));
+ return dec;
+ } else {
+ assert(1 != 1);
+ }
}
-static int deleteKey(redisDb *db, robj *key) {
- int retval;
+static int compareStringObjects(robj *a, robj *b) {
+ assert(a->type == REDIS_STRING && b->type == REDIS_STRING);
- /* We need to protect key from destruction: after the first dictDelete()
- * it may happen that 'key' is no longer valid if we don't increment
- * it's count. This may happen when we get the object reference directly
- * from the hash table with dictRandomKey() or dict iterators */
- incrRefCount(key);
- if (dictSize(db->expires)) dictDelete(db->expires,key);
- retval = dictDelete(db->dict,key);
- decrRefCount(key);
+ if (a->encoding == REDIS_ENCODING_INT && b->encoding == REDIS_ENCODING_INT){
+ return (long)a->ptr - (long)b->ptr;
+ } else {
+ int retval;
- return retval == DICT_OK;
+ incrRefCount(a);
+ incrRefCount(b);
+ if (a->encoding != REDIS_ENCODING_RAW) a = getDecodedObject(a);
+ if (b->encoding != REDIS_ENCODING_RAW) b = getDecodedObject(a);
+ retval = sdscmp(a->ptr,b->ptr);
+ decrRefCount(a);
+ decrRefCount(b);
+ return retval;
+ }
+}
+
+static size_t stringObjectLen(robj *o) {
+ assert(o->type == REDIS_STRING);
+ if (o->encoding == REDIS_ENCODING_RAW) {
+ return sdslen(o->ptr);
+ } else {
+ char buf[32];
+
+ return snprintf(buf,32,"%ld",(long)o->ptr);
+ }
}
/*============================ DB saving/loading ============================ */
/* Save a string objet as [len][data] on disk. If the object is a string
* representation of an integer value we try to safe it in a special form */
-static int rdbSaveStringObject(FILE *fp, robj *obj) {
- size_t len = sdslen(obj->ptr);
+static int rdbSaveStringObjectRaw(FILE *fp, robj *obj) {
+ size_t len;
int enclen;
+ len = sdslen(obj->ptr);
+
/* Try integer encoding */
if (len <= 11) {
unsigned char buf[5];
/* Try LZF compression - under 20 bytes it's unable to compress even
* aaaaaaaaaaaaaaaaaa so skip it */
- if (1 && len > 20) {
+ if (len > 20) {
int retval;
retval = rdbSaveLzfStringObject(fp,obj);
return 0;
}
+/* Like rdbSaveStringObjectRaw() but handle encoded objects */
+static int rdbSaveStringObject(FILE *fp, robj *obj) {
+ int retval;
+ robj *dec;
+
+ if (obj->encoding != REDIS_ENCODING_RAW) {
+ dec = getDecodedObject(obj);
+ retval = rdbSaveStringObjectRaw(fp,dec);
+ decrRefCount(dec);
+ return retval;
+ } else {
+ return rdbSaveStringObjectRaw(fp,obj);
+ }
+}
+
/* Save the DB on disk. Return REDIS_ERR on error, REDIS_OK on success */
static int rdbSave(char *filename) {
dictIterator *di = NULL;
int j;
time_t now = time(NULL);
- snprintf(tmpfile,256,"temp-%d.%ld.rdb",(int)time(NULL),(long int)random());
+ snprintf(tmpfile,256,"temp-%d.rdb", (int) getpid());
fp = fopen(tmpfile,"w");
if (!fp) {
redisLog(REDIS_WARNING, "Failed saving the DB: %s", strerror(errno));
return REDIS_OK; /* unreached */
}
+static void rdbRemoveTempFile(pid_t childpid) {
+ char tmpfile[256];
+
+ snprintf(tmpfile,256,"temp-%d.rdb", (int) childpid);
+ unlink(tmpfile);
+}
+
static int rdbLoadType(FILE *fp) {
unsigned char type;
if (fread(&type,1,1,fp) == 0) return -1;
if (type == REDIS_STRING) {
/* Read string value */
if ((o = rdbLoadStringObject(fp,rdbver)) == NULL) goto eoferr;
+ tryObjectEncoding(o);
} else if (type == REDIS_LIST || type == REDIS_SET) {
/* Read list/set value */
uint32_t listlen;
robj *ele;
if ((ele = rdbLoadStringObject(fp,rdbver)) == NULL) goto eoferr;
+ tryObjectEncoding(ele);
if (type == REDIS_LIST) {
if (!listAddNodeTail((list*)o->ptr,ele))
oom("listAddNodeTail");
}
static void echoCommand(redisClient *c) {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",
- (int)sdslen(c->argv[1]->ptr)));
+ addReplyBulkLen(c,c->argv[1]);
addReply(c,c->argv[1]);
addReply(c,shared.crlf);
}
if (o->type != REDIS_STRING) {
addReply(c,shared.wrongtypeerr);
} else {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",(int)sdslen(o->ptr)));
+ addReplyBulkLen(c,o);
addReply(c,o);
addReply(c,shared.crlf);
}
}
}
-static void getSetCommand(redisClient *c) {
+static void getsetCommand(redisClient *c) {
getCommand(c);
if (dictAdd(c->db->dict,c->argv[1],c->argv[2]) == DICT_ERR) {
dictReplace(c->db->dict,c->argv[1],c->argv[2]);
if (o->type != REDIS_STRING) {
addReply(c,shared.nullbulk);
} else {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",(int)sdslen(o->ptr)));
+ addReplyBulkLen(c,o);
addReply(c,o);
addReply(c,shared.crlf);
}
} else {
char *eptr;
- value = strtoll(o->ptr, &eptr, 10);
+ if (o->encoding == REDIS_ENCODING_RAW)
+ value = strtoll(o->ptr, &eptr, 10);
+ else if (o->encoding == REDIS_ENCODING_INT)
+ value = (long)o->ptr;
+ else
+ assert(1 != 1);
}
}
value += incr;
o = createObject(REDIS_STRING,sdscatprintf(sdsempty(),"%lld",value));
+ tryObjectEncoding(o);
retval = dictAdd(c->db->dict,c->argv[1],o);
if (retval == DICT_ERR) {
dictReplace(c->db->dict,c->argv[1],o);
static void shutdownCommand(redisClient *c) {
redisLog(REDIS_WARNING,"User requested shutdown, saving DB...");
+ /* Kill the saving child if there is a background saving in progress.
+ We want to avoid race conditions, for instance our saving child may
+ overwrite the synchronous saving did by SHUTDOWN. */
if (server.bgsaveinprogress) {
redisLog(REDIS_WARNING,"There is a live saving child. Killing it!");
- signal(SIGCHLD, SIG_IGN);
kill(server.bgsavechildpid,SIGKILL);
+ rdbRemoveTempFile(server.bgsavechildpid);
}
+ /* SYNC SAVE */
if (rdbSave(server.dbfilename) == REDIS_OK) {
if (server.daemonize)
unlink(server.pidfile);
redisLog(REDIS_WARNING,"Server exit now, bye bye...");
exit(1);
} else {
- signal(SIGCHLD, SIG_DFL);
+ /* Ooops.. error saving! The best we can do is to continue operating.
+ * Note that if there was a background saving process, in the next
+ * cron() Redis will be notified that the background saving aborted,
+ * handling special stuff like slaves pending for synchronization... */
redisLog(REDIS_WARNING,"Error trying to save the DB, can't exit");
addReplySds(c,sdsnew("-ERR can't quit, problems saving the DB\r\n"));
}
addReply(c,shared.nullbulk);
} else {
robj *ele = listNodeValue(ln);
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",(int)sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
}
addReply(c,shared.nullbulk);
} else {
robj *ele = listNodeValue(ln);
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",(int)sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
listDelNode(list,ln);
addReplySds(c,sdscatprintf(sdsempty(),"*%d\r\n",rangelen));
for (j = 0; j < rangelen; j++) {
ele = listNodeValue(ln);
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",(int)sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
ln = ln->next;
ln = listLast(list);
listDelNode(list,ln);
}
- addReply(c,shared.ok);
server.dirty++;
+ addReply(c,shared.ok);
}
}
}
robj *ele = listNodeValue(ln);
next = fromtail ? ln->prev : ln->next;
- if (sdscmp(ele->ptr,c->argv[3]->ptr) == 0) {
+ if (compareStringObjects(ele,c->argv[3]) == 0) {
listDelNode(list,ln);
server.dirty++;
removed++;
} else {
robj *ele = dictGetEntryKey(de);
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
dictDelete(set->ptr,ele);
continue; /* at least one set does not contain the member */
ele = dictGetEntryKey(de);
if (!dstkey) {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
cardinality++;
robj *ele;
ele = dictGetEntryKey(de);
- addReplySds(c,sdscatprintf(sdsempty(),
- "$%d\r\n",sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
}
char buf[REDIS_SORTKEY_MAX+1];
} keyname;
+ if (subst->encoding == REDIS_ENCODING_RAW)
+ incrRefCount(subst);
+ else {
+ subst = getDecodedObject(subst);
+ }
+
spat = pattern->ptr;
ssub = subst->ptr;
if (sdslen(spat)+sdslen(ssub)-1 > REDIS_SORTKEY_MAX) return NULL;
keyobj.type = REDIS_STRING;
keyobj.ptr = ((char*)&keyname)+(sizeof(long)*2);
+ decrRefCount(subst);
+
/* printf("lookup '%s' => %p\n", keyname.buf,de); */
return lookupKeyRead(db,&keyobj);
}
}
} else {
/* Compare elements directly */
- cmp = strcoll(so1->obj->ptr,so2->obj->ptr);
+ if (so1->obj->encoding == REDIS_ENCODING_RAW &&
+ so2->obj->encoding == REDIS_ENCODING_RAW) {
+ cmp = strcoll(so1->obj->ptr,so2->obj->ptr);
+ } else {
+ robj *dec1, *dec2;
+
+ dec1 = so1->obj->encoding == REDIS_ENCODING_RAW ?
+ so1->obj : getDecodedObject(so1->obj);
+ dec2 = so2->obj->encoding == REDIS_ENCODING_RAW ?
+ so2->obj : getDecodedObject(so2->obj);
+ cmp = strcoll(dec1->ptr,dec2->ptr);
+ if (dec1 != so1->obj) decrRefCount(dec1);
+ if (dec2 != so2->obj) decrRefCount(dec2);
+ }
}
}
return server.sort_desc ? -cmp : cmp;
byval = lookupKeyByPattern(c->db,sortby,vector[j].obj);
if (!byval || byval->type != REDIS_STRING) continue;
if (alpha) {
- vector[j].u.cmpobj = byval;
- incrRefCount(byval);
+ if (byval->encoding == REDIS_ENCODING_RAW) {
+ vector[j].u.cmpobj = byval;
+ incrRefCount(byval);
+ } else {
+ vector[j].u.cmpobj = getDecodedObject(byval);
+ }
} else {
- vector[j].u.score = strtod(byval->ptr,NULL);
+ if (byval->encoding == REDIS_ENCODING_RAW) {
+ vector[j].u.score = strtod(byval->ptr,NULL);
+ } else {
+ if (byval->encoding == REDIS_ENCODING_INT) {
+ vector[j].u.score = (long)byval->ptr;
+ } else
+ assert(1 != 1);
+ }
}
} else {
- if (!alpha) vector[j].u.score = strtod(vector[j].obj->ptr,NULL);
+ if (!alpha) {
+ if (vector[j].obj->encoding == REDIS_ENCODING_RAW)
+ vector[j].u.score = strtod(vector[j].obj->ptr,NULL);
+ else {
+ if (vector[j].obj->encoding == REDIS_ENCODING_INT)
+ vector[j].u.score = (long) vector[j].obj->ptr;
+ else
+ assert(1 != 1);
+ }
+ }
}
}
}
for (j = start; j <= end; j++) {
listNode *ln;
if (!getop) {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",
- sdslen(vector[j].obj->ptr)));
+ addReplyBulkLen(c,vector[j].obj);
addReply(c,vector[j].obj);
addReply(c,shared.crlf);
}
if (!val || val->type != REDIS_STRING) {
addReply(c,shared.nullbulk);
} else {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",
- sdslen(val->ptr)));
+ addReplyBulkLen(c,val);
addReply(c,val);
addReply(c,shared.crlf);
}
static void infoCommand(redisClient *c) {
sds info;
time_t uptime = time(NULL)-server.stat_starttime;
+ int j;
info = sdscatprintf(sdsempty(),
"redis_version:%s\r\n"
+ "arch_bits:%s\r\n"
"uptime_in_seconds:%d\r\n"
"uptime_in_days:%d\r\n"
"connected_clients:%d\r\n"
"total_commands_processed:%lld\r\n"
"role:%s\r\n"
,REDIS_VERSION,
+ (sizeof(long) == 8) ? "64" : "32",
uptime,
uptime/(3600*24),
listLength(server.clients)-listLength(server.slaves),
(int)(time(NULL)-server.master->lastinteraction)
);
}
+ for (j = 0; j < server.dbnum; j++) {
+ long long keys, vkeys;
+
+ keys = dictSize(server.db[j].dict);
+ vkeys = dictSize(server.db[j].expires);
+ if (keys || vkeys) {
+ info = sdscatprintf(info, "db%d: keys=%lld,expires=%lld\r\n",
+ j, keys, vkeys);
+ }
+ }
addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",sdslen(info)));
addReplySds(c,info);
addReply(c,shared.crlf);
return;
} else {
time_t when = time(NULL)+seconds;
- if (setExpire(c->db,c->argv[1],when))
+ if (setExpire(c->db,c->argv[1],when)) {
addReply(c,shared.cone);
- else
+ server.dirty++;
+ } else {
addReply(c,shared.czero);
+ }
return;
}
}
addReplySds(c,sdscatprintf(sdsempty(),":%d\r\n",ttl));
}
+static void msetGenericCommand(redisClient *c, int nx) {
+ int j;
+
+ if ((c->argc % 2) == 0) {
+ addReplySds(c,sdsnew("-ERR wrong number of arguments\r\n"));
+ return;
+ }
+ /* Handle the NX flag. The MSETNX semantic is to return zero and don't
+ * set nothing at all if at least one already key exists. */
+ if (nx) {
+ for (j = 1; j < c->argc; j += 2) {
+ if (dictFind(c->db->dict,c->argv[j]) != NULL) {
+ addReply(c, shared.czero);
+ return;
+ }
+ }
+ }
+
+ for (j = 1; j < c->argc; j += 2) {
+ dictAdd(c->db->dict,c->argv[j],c->argv[j+1]);
+ incrRefCount(c->argv[j]);
+ incrRefCount(c->argv[j+1]);
+ removeExpire(c->db,c->argv[j]);
+ }
+ server.dirty += (c->argc-1)/2;
+ addReply(c, nx ? shared.cone : shared.ok);
+}
+
+static void msetCommand(redisClient *c) {
+ msetGenericCommand(c,0);
+}
+
+static void msetnxCommand(redisClient *c) {
+ msetGenericCommand(c,1);
+}
+
/* =============================== Replication ============================= */
static int syncWrite(int fd, char *ptr, ssize_t size, int timeout) {
}
}
-static void updateSalvesWaitingBgsave(int bgsaveerr) {
+/* This function is called at the end of every backgrond saving.
+ * The argument bgsaveerr is REDIS_OK if the background saving succeeded
+ * otherwise REDIS_ERR is passed to the function.
+ *
+ * The goal of this function is to handle slaves waiting for a successful
+ * background saving in order to perform non-blocking synchronization. */
+static void updateSlavesWaitingBgsave(int bgsaveerr) {
listNode *ln;
int startbgsave = 0;
key = dictGetEntryKey(de);
val = dictGetEntryVal(de);
addReplySds(c,sdscatprintf(sdsempty(),
- "+Key at:%p refcount:%d, value at:%p refcount:%d\r\n",
- key, key->refcount, val, val->refcount));
+ "+Key at:%p refcount:%d, value at:%p refcount:%d encoding:%d\r\n",
+ key, key->refcount, val, val->refcount, val->encoding));
} else {
addReplySds(c,sdsnew(
"-ERR Syntax error, try DEBUG [SEGFAULT|OBJECT <key>]\r\n"));
#ifdef HAVE_BACKTRACE
static struct redisFunctionSym symsTable[] = {
+{"compareStringObjects", (unsigned long)compareStringObjects},
+{"isStringRepresentableAsLong", (unsigned long)isStringRepresentableAsLong},
+{"dictEncObjKeyCompare", (unsigned long)dictEncObjKeyCompare},
+{"dictEncObjHash", (unsigned long)dictEncObjHash},
+{"incrDecrCommand", (unsigned long)incrDecrCommand},
{"freeStringObject", (unsigned long)freeStringObject},
{"freeListObject", (unsigned long)freeListObject},
{"freeSetObject", (unsigned long)freeSetObject},
{"createObject", (unsigned long)createObject},
{"freeClient", (unsigned long)freeClient},
{"rdbLoad", (unsigned long)rdbLoad},
+{"rdbSaveStringObject", (unsigned long)rdbSaveStringObject},
+{"rdbSaveStringObjectRaw", (unsigned long)rdbSaveStringObjectRaw},
{"addReply", (unsigned long)addReply},
{"addReplySds", (unsigned long)addReplySds},
{"incrRefCount", (unsigned long)incrRefCount},
{"replicationFeedSlaves", (unsigned long)replicationFeedSlaves},
{"syncWithMaster", (unsigned long)syncWithMaster},
{"tryObjectSharing", (unsigned long)tryObjectSharing},
+{"tryObjectEncoding", (unsigned long)tryObjectEncoding},
+{"getDecodedObject", (unsigned long)getDecodedObject},
{"removeExpire", (unsigned long)removeExpire},
{"expireIfNeeded", (unsigned long)expireIfNeeded},
{"deleteIfVolatile", (unsigned long)deleteIfVolatile},
{"deleteKey", (unsigned long)deleteKey},
{"getExpire", (unsigned long)getExpire},
{"setExpire", (unsigned long)setExpire},
-{"updateSalvesWaitingBgsave", (unsigned long)updateSalvesWaitingBgsave},
+{"updateSlavesWaitingBgsave", (unsigned long)updateSlavesWaitingBgsave},
{"freeMemoryIfNeeded", (unsigned long)freeMemoryIfNeeded},
{"authCommand", (unsigned long)authCommand},
{"pingCommand", (unsigned long)pingCommand},
{"mgetCommand", (unsigned long)mgetCommand},
{"monitorCommand", (unsigned long)monitorCommand},
{"expireCommand", (unsigned long)expireCommand},
-{"getSetCommand", (unsigned long)getSetCommand},
+{"getsetCommand", (unsigned long)getsetCommand},
{"ttlCommand", (unsigned long)ttlCommand},
{"slaveofCommand", (unsigned long)slaveofCommand},
{"debugCommand", (unsigned long)debugCommand},
{"processCommand", (unsigned long)processCommand},
{"setupSigSegvAction", (unsigned long)setupSigSegvAction},
{"readQueryFromClient", (unsigned long)readQueryFromClient},
+{"rdbRemoveTempFile", (unsigned long)rdbRemoveTempFile},
+{"msetGenericCommand", (unsigned long)msetGenericCommand},
+{"msetCommand", (unsigned long)msetCommand},
+{"msetnxCommand", (unsigned long)msetnxCommand},
{NULL,0}
};
return (void*) uc->uc_mcontext.mc_eip;
#elif defined(__dietlibc__)
return (void*) uc->uc_mcontext.eip;
-#elif defined(__APPLE__)
+#elif defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
return (void*) uc->uc_mcontext->__ss.__eip;
-#else /* Linux */
+#elif defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6)
+ #ifdef _STRUCT_X86_THREAD_STATE64
+ return (void*) uc->uc_mcontext->__ss.__rip;
+ #else
+ return (void*) uc->uc_mcontext->__ss.__eip;
+ #endif
+#elif defined(__i386__) || defined(__X86_64__) /* Linux x86 */
return (void*) uc->uc_mcontext.gregs[REG_EIP];
+#elif defined(__ia64__) /* Linux IA64 */
+ return (void*) uc->uc_mcontext.sc_ip;
+#else
+ return NULL;
#endif
}
trace_size = backtrace(trace, 100);
/* overwrite sigaction with caller's address */
- trace[1] = getMcontextEip(uc);
+ if (getMcontextEip(uc) != NULL) {
+ trace[1] = getMcontextEip(uc);
+ }
messages = backtrace_symbols(trace, trace_size);
for (i=1; i<trace_size; ++i) {
void linuxOvercommitMemoryWarning(void) {
if (linuxOvercommitMemoryValue() == 0) {
- redisLog(REDIS_WARNING,"WARNING overcommit_memory is set to 0! Background save may fail under low condition memory. To fix this issue add 'echo 1 > /proc/sys/vm/overcommit_memory' in your init scripts.");
+ redisLog(REDIS_WARNING,"WARNING overcommit_memory is set to 0! Background save may fail under low condition memory. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.");
}
}
#endif /* __linux__ */
}
int main(int argc, char **argv) {
-#ifdef __linux__
- linuxOvercommitMemoryWarning();
-#endif
-
initServerConfig();
if (argc == 2) {
ResetServerSaveParams();
initServer();
if (server.daemonize) daemonize();
redisLog(REDIS_NOTICE,"Server started, Redis version " REDIS_VERSION);
+#ifdef __linux__
+ linuxOvercommitMemoryWarning();
+#endif
if (rdbLoad(server.dbfilename) == REDIS_OK)
redisLog(REDIS_NOTICE,"DB loaded from disk");
if (aeCreateFileEvent(server.el, server.fd, AE_READABLE,
projects / redis.git / blobdiff