#include <float.h>
#include <math.h>
#include <pthread.h>
+#include <sys/resource.h>
/* Our shared "common" objects */
{"info",infoCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
{"monitor",monitorCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
{"ttl",ttlCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
+ {"persist",persistCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
{"slaveof",slaveofCommand,3,REDIS_CMD_INLINE,NULL,0,0,0},
{"debug",debugCommand,-2,REDIS_CMD_INLINE,NULL,0,0,0},
{"config",configCommand,-2,REDIS_CMD_BULK,NULL,0,0,0},
NULL, /* val dup */
dictEncObjKeyCompare, /* key compare */
dictRedisObjectDestructor, /* key destructor */
- dictVanillaFree /* val destructor of malloc(sizeof(double)) */
+ NULL /* val destructor */
};
/* Db->dict, keys are sds strings, vals are Redis objects. */
/* ======================= Cron: called every 100 ms ======================== */
+/* Try to expire a few timed out keys. The algorithm used is adaptive and
+ * will use few CPU cycles if there are few expiring keys, otherwise
+ * it will get more aggressive to avoid that too much memory is used by
+ * keys that can be removed from the keyspace. */
+void activeExpireCycle(void) {
+ int j;
+
+ for (j = 0; j < server.dbnum; j++) {
+ int expired;
+ redisDb *db = server.db+j;
+
+ /* Continue to expire if at the end of the cycle more than 25%
+ * of the keys were expired. */
+ do {
+ long num = dictSize(db->expires);
+ time_t now = time(NULL);
+
+ expired = 0;
+ if (num > REDIS_EXPIRELOOKUPS_PER_CRON)
+ num = REDIS_EXPIRELOOKUPS_PER_CRON;
+ while (num--) {
+ dictEntry *de;
+ time_t t;
+
+ if ((de = dictGetRandomKey(db->expires)) == NULL) break;
+ t = (time_t) dictGetEntryVal(de);
+ if (now > t) {
+ sds key = dictGetEntryKey(de);
+ robj *keyobj = createStringObject(key,sdslen(key));
+
+ propagateExpire(db,keyobj);
+ dbDelete(db,keyobj);
+ decrRefCount(keyobj);
+ expired++;
+ server.stat_expiredkeys++;
+ }
+ }
+ } while (expired > REDIS_EXPIRELOOKUPS_PER_CRON/4);
+ }
+}
+
+
int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
int j, loops = server.cronloops++;
REDIS_NOTUSED(eventLoop);
}
}
- /* Try to expire a few timed out keys. The algorithm used is adaptive and
- * will use few CPU cycles if there are few expiring keys, otherwise
- * it will get more aggressive to avoid that too much memory is used by
- * keys that can be removed from the keyspace. */
- for (j = 0; j < server.dbnum; j++) {
- int expired;
- redisDb *db = server.db+j;
-
- /* Continue to expire if at the end of the cycle more than 25%
- * of the keys were expired. */
- do {
- long num = dictSize(db->expires);
- time_t now = time(NULL);
-
- expired = 0;
- if (num > REDIS_EXPIRELOOKUPS_PER_CRON)
- num = REDIS_EXPIRELOOKUPS_PER_CRON;
- while (num--) {
- dictEntry *de;
- time_t t;
-
- if ((de = dictGetRandomKey(db->expires)) == NULL) break;
- t = (time_t) dictGetEntryVal(de);
- if (now > t) {
- sds key = dictGetEntryKey(de);
- robj *keyobj = createStringObject(key,sdslen(key));
-
- dbDelete(db,keyobj);
- decrRefCount(keyobj);
- expired++;
- server.stat_expiredkeys++;
- }
- }
- } while (expired > REDIS_EXPIRELOOKUPS_PER_CRON/4);
- }
+ /* Expire a few keys per cycle, only if this is a master.
+ * On slaves we wait for DEL operations synthesized by the master
+ * in order to guarantee a strict consistency. */
+ if (server.masterhost == NULL) activeExpireCycle();
/* Swap a few keys on disk if we are over the memory limit and VM
* is enbled. Try to free objects from the free list first. */
server.hash_max_zipmap_value = REDIS_HASH_MAX_ZIPMAP_VALUE;
server.list_max_ziplist_entries = REDIS_LIST_MAX_ZIPLIST_ENTRIES;
server.list_max_ziplist_value = REDIS_LIST_MAX_ZIPLIST_VALUE;
+ server.set_max_intset_entries = REDIS_SET_MAX_INTSET_ENTRIES;
server.shutdown_asap = 0;
resetServerSaveParams();
int processCommand(redisClient *c) {
struct redisCommand *cmd;
- /* 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
} 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"));
+ addReplyError(c,"multi bulk protocol error");
resetClient(c);
return 1;
} else {
- int bulklen = atoi(((char*)c->argv[0]->ptr)+1);
+ char *eptr;
+ long bulklen = strtol(((char*)c->argv[0]->ptr)+1,&eptr,10);
+ int perr = eptr[0] != '\0';
+
decrRefCount(c->argv[0]);
- if (bulklen < 0 || bulklen > 1024*1024*1024) {
+ if (perr || bulklen == LONG_MIN || bulklen == LONG_MAX ||
+ bulklen < 0 || bulklen > 1024*1024*1024)
+ {
c->argc--;
- addReplySds(c,sdsnew("-ERR invalid bulk write count\r\n"));
+ addReplyError(c,"invalid bulk write count");
resetClient(c);
return 1;
}
* such wrong arity, bad command name and so forth. */
cmd = lookupCommand(c->argv[0]->ptr);
if (!cmd) {
- addReplySds(c,
- sdscatprintf(sdsempty(), "-ERR unknown command '%s'\r\n",
- (char*)c->argv[0]->ptr));
+ addReplyErrorFormat(c,"unknown command '%s'",
+ (char*)c->argv[0]->ptr);
resetClient(c);
return 1;
} else if ((cmd->arity > 0 && cmd->arity != c->argc) ||
(c->argc < -cmd->arity)) {
- addReplySds(c,
- sdscatprintf(sdsempty(),
- "-ERR wrong number of arguments for '%s' command\r\n",
- cmd->name));
+ addReplyErrorFormat(c,"wrong number of arguments for '%s' command",
+ cmd->name);
resetClient(c);
return 1;
} else if (cmd->flags & REDIS_CMD_BULK && c->bulklen == -1) {
/* This is a bulk command, we have to read the last argument yet. */
- int bulklen = atoi(c->argv[c->argc-1]->ptr);
+ char *eptr;
+ long bulklen = strtol(c->argv[c->argc-1]->ptr,&eptr,10);
+ int perr = eptr[0] != '\0';
decrRefCount(c->argv[c->argc-1]);
- if (bulklen < 0 || bulklen > 1024*1024*1024) {
+ if (perr || bulklen == LONG_MAX || bulklen == LONG_MIN ||
+ bulklen < 0 || bulklen > 1024*1024*1024)
+ {
c->argc--;
- addReplySds(c,sdsnew("-ERR invalid bulk write count\r\n"));
+ addReplyError(c,"invalid bulk write count");
resetClient(c);
return 1;
}
/* Check if the user is authenticated */
if (server.requirepass && !c->authenticated && cmd->proc != authCommand) {
- addReplySds(c,sdsnew("-ERR operation not permitted\r\n"));
+ addReplyError(c,"operation not permitted");
resetClient(c);
return 1;
}
- /* Handle the maxmemory directive */
+ /* Handle the maxmemory directive.
+ *
+ * First we try to free some memory if possible (if there are volatile
+ * keys in the dataset). If there are not the only thing we can do
+ * is returning an error. */
+ if (server.maxmemory) freeMemoryIfNeeded();
if (server.maxmemory && (cmd->flags & REDIS_CMD_DENYOOM) &&
zmalloc_used_memory() > server.maxmemory)
{
- addReplySds(c,sdsnew("-ERR command not allowed when used memory > 'maxmemory'\r\n"));
+ addReplyError(c,"command not allowed when used memory > 'maxmemory'");
resetClient(c);
return 1;
}
&&
cmd->proc != subscribeCommand && cmd->proc != unsubscribeCommand &&
cmd->proc != psubscribeCommand && cmd->proc != punsubscribeCommand) {
- addReplySds(c,sdsnew("-ERR only (P)SUBSCRIBE / (P)UNSUBSCRIBE / QUIT allowed in this context\r\n"));
+ addReplyError(c,"only (P)SUBSCRIBE / (P)UNSUBSCRIBE / QUIT allowed in this context");
resetClient(c);
return 1;
}
if (server.vm_enabled) unlink(server.vm_swap_file);
} else {
/* Snapshotting. Perform a SYNC SAVE and exit */
- if (rdbSave(server.dbfilename) == REDIS_OK) {
- if (server.daemonize)
- unlink(server.pidfile);
- redisLog(REDIS_WARNING,"%zu bytes used at exit",zmalloc_used_memory());
- } else {
+ if (rdbSave(server.dbfilename) != REDIS_OK) {
/* 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
return REDIS_ERR;
}
}
+ if (server.daemonize) unlink(server.pidfile);
redisLog(REDIS_WARNING,"Server exit now, bye bye...");
return REDIS_OK;
}
addReply(c,shared.ok);
} else {
c->authenticated = 0;
- addReplySds(c,sdscatprintf(sdsempty(),"-ERR invalid password\r\n"));
+ addReplyError(c,"invalid password");
}
}
time_t uptime = time(NULL)-server.stat_starttime;
int j;
char hmem[64];
+ struct rusage self_ru, c_ru;
+
+ getrusage(RUSAGE_SELF, &self_ru);
+ getrusage(RUSAGE_CHILDREN, &c_ru);
bytesToHuman(hmem,zmalloc_used_memory());
info = sdscatprintf(sdsempty(),
"process_id:%ld\r\n"
"uptime_in_seconds:%ld\r\n"
"uptime_in_days:%ld\r\n"
+ "used_cpu_sys:%.2f\r\n"
+ "used_cpu_user:%.2f\r\n"
+ "used_cpu_sys_childrens:%.2f\r\n"
+ "used_cpu_user_childrens:%.2f\r\n"
"connected_clients:%d\r\n"
"connected_slaves:%d\r\n"
"blocked_clients:%d\r\n"
"used_memory:%zu\r\n"
"used_memory_human:%s\r\n"
+ "mem_fragmentation_ratio:%.2f\r\n"
"changes_since_last_save:%lld\r\n"
"bgsave_in_progress:%d\r\n"
"last_save_time:%ld\r\n"
(long) getpid(),
uptime,
uptime/(3600*24),
+ (float)self_ru.ru_utime.tv_sec+(float)self_ru.ru_utime.tv_usec/1000000,
+ (float)self_ru.ru_stime.tv_sec+(float)self_ru.ru_stime.tv_usec/1000000,
+ (float)c_ru.ru_utime.tv_sec+(float)c_ru.ru_utime.tv_usec/1000000,
+ (float)c_ru.ru_stime.tv_sec+(float)c_ru.ru_stime.tv_usec/1000000,
listLength(server.clients)-listLength(server.slaves),
listLength(server.slaves),
server.blpop_blocked_clients,
zmalloc_used_memory(),
hmem,
+ zmalloc_get_fragmentation_ratio(),
server.dirty,
server.bgsavechildpid != -1,
server.lastsave,
if (tryFreeOneObjectFromFreelist() == REDIS_OK) continue;
for (j = 0; j < server.dbnum; j++) {
int minttl = -1;
- robj *minkey = NULL;
+ sds minkey = NULL;
+ robj *keyobj = NULL;
struct dictEntry *de;
if (dictSize(server.db[j].expires)) {
minttl = t;
}
}
- dbDelete(server.db+j,minkey);
+ keyobj = createStringObject(minkey,sdslen(minkey));
+ dbDelete(server.db+j,keyobj);
+ server.stat_expiredkeys++;
+ decrRefCount(keyobj);
}
}
if (!freed) return; /* nothing to free... */
}
#endif /* __linux__ */
+void createPidFile(void) {
+ /* Try to write the pid file in a best-effort way. */
+ FILE *fp = fopen(server.pidfile,"w");
+ if (fp) {
+ fprintf(fp,"%d\n",getpid());
+ fclose(fp);
+ }
+}
+
void daemonize(void) {
int fd;
- FILE *fp;
if (fork() != 0) exit(0); /* parent exits */
setsid(); /* create a new session */
dup2(fd, STDERR_FILENO);
if (fd > STDERR_FILENO) close(fd);
}
- /* Try to write the pid file */
- fp = fopen(server.pidfile,"w");
- if (fp) {
- fprintf(fp,"%d\n",getpid());
- fclose(fp);
- }
}
void version() {
}
if (server.daemonize) daemonize();
initServer();
+ if (server.daemonize) createPidFile();
redisLog(REDIS_NOTICE,"Server started, Redis version " REDIS_VERSION);
#ifdef __linux__
linuxOvercommitMemoryWarning();
redisLog(REDIS_WARNING,"%s", messages[i]);
/* free(messages); Don't call free() with possibly corrupted memory. */
+ if (server.daemonize) unlink(server.pidfile);
_exit(0);
}
projects / redis.git / blobdiff