X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/aaada3f962a9f87fb239e55e3d26c1e794d411d5..5171777bf112a6a930c4750949037ce741f3bf28:/src/redis.c diff --git a/src/redis.c b/src/redis.c index 7b2ed42e..caa96247 100644 --- a/src/redis.c +++ b/src/redis.c @@ -51,6 +51,7 @@ #include #include #include +#include /* Our shared "common" objects */ @@ -909,15 +910,20 @@ int processCommand(redisClient *c) { } 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; } @@ -970,27 +976,28 @@ int processCommand(redisClient *c) { * 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; } @@ -1017,7 +1024,7 @@ int processCommand(redisClient *c) { /* 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; } @@ -1026,7 +1033,7 @@ int processCommand(redisClient *c) { 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; } @@ -1036,7 +1043,7 @@ int processCommand(redisClient *c) { && 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; } @@ -1077,11 +1084,7 @@ int prepareForShutdown() { 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 @@ -1091,6 +1094,7 @@ int prepareForShutdown() { return REDIS_ERR; } } + if (server.daemonize) unlink(server.pidfile); redisLog(REDIS_WARNING,"Server exit now, bye bye..."); return REDIS_OK; } @@ -1103,7 +1107,7 @@ void authCommand(redisClient *c) { addReply(c,shared.ok); } else { c->authenticated = 0; - addReplySds(c,sdscatprintf(sdsempty(),"-ERR invalid password\r\n")); + addReplyError(c,"invalid password"); } } @@ -1144,6 +1148,10 @@ sds genRedisInfoString(void) { 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(), @@ -1155,11 +1163,16 @@ sds genRedisInfoString(void) { "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" @@ -1181,11 +1194,16 @@ sds genRedisInfoString(void) { (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, @@ -1315,7 +1333,8 @@ void freeMemoryIfNeeded(void) { 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)) { @@ -1332,7 +1351,10 @@ void freeMemoryIfNeeded(void) { 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... */ @@ -1363,9 +1385,17 @@ void linuxOvercommitMemoryWarning(void) { } #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 */ @@ -1379,12 +1409,6 @@ void daemonize(void) { 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() { @@ -1417,6 +1441,7 @@ int main(int argc, char **argv) { } if (server.daemonize) daemonize(); initServer(); + if (server.daemonize) createPidFile(); redisLog(REDIS_NOTICE,"Server started, Redis version " REDIS_VERSION); #ifdef __linux__ linuxOvercommitMemoryWarning(); @@ -1493,6 +1518,7 @@ void segvHandler(int sig, siginfo_t *info, void *secret) { redisLog(REDIS_WARNING,"%s", messages[i]); /* free(messages); Don't call free() with possibly corrupted memory. */ + if (server.daemonize) unlink(server.pidfile); _exit(0); }