} pubsubPattern;
typedef void redisCommandProc(redisClient *c);
+typedef void redisVmPreloadProc(redisClient *c, struct redisCommand *cmd, int argc, robj **argv);
struct redisCommand {
char *name;
redisCommandProc *proc;
/* Use a function to determine which keys need to be loaded
* in the background prior to executing this command. Takes precedence
* over vm_firstkey and others, ignored when NULL */
- redisCommandProc *vm_preload_proc;
+ redisVmPreloadProc *vm_preload_proc;
/* What keys should be loaded in background when calling this command? */
int vm_firstkey; /* The first argument that's a key (0 = no keys) */
int vm_lastkey; /* THe last argument that's a key */
static void waitEmptyIOJobsQueue(void);
static void vmReopenSwapFile(void);
static int vmFreePage(off_t page);
-static void zunionInterBlockClientOnSwappedKeys(redisClient *c);
+static void zunionInterBlockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv);
static int blockClientOnSwappedKeys(struct redisCommand *cmd, redisClient *c);
static int dontWaitForSwappedKey(redisClient *c, robj *key);
static void handleClientsBlockedOnSwappedKey(redisDb *db, robj *key);
if ((server.appendonly = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
+ } else if (!strcasecmp(argv[0],"appendfilename") && argc == 2) {
+ zfree(server.appendfilename);
+ server.appendfilename = zstrdup(argv[1]);
} else if (!strcasecmp(argv[0],"appendfsync") && argc == 2) {
if (!strcasecmp(argv[1],"no")) {
server.appendfsync = APPENDFSYNC_NO;
} else if (o->encoding == REDIS_ENCODING_INT) {
value = (long)o->ptr;
} else {
- redisAssert(1 != 1);
+ redisPanic("Unknown string encoding");
}
}
} else if (o->encoding == REDIS_ENCODING_INT) {
value = (long)o->ptr;
} else {
- redisAssert(1 != 1);
+ redisPanic("Unknown string encoding");
}
}
}
static void existsCommand(redisClient *c) {
- addReply(c,lookupKeyRead(c->db,c->argv[1]) ? shared.cone : shared.czero);
+ expireIfNeeded(c->db,c->argv[1]);
+ if (dictFind(c->db->dict,c->argv[1])) {
+ addReply(c, shared.cone);
+ } else {
+ addReply(c, shared.czero);
+ }
}
static void selectCommand(redisClient *c) {
unlink(server.pidfile);
redisLog(REDIS_WARNING,"%zu bytes used at exit",zmalloc_used_memory());
redisLog(REDIS_WARNING,"Server exit now, bye bye...");
- if (server.vm_enabled) unlink(server.vm_swap_file);
exit(0);
} else {
/* Ooops.. error saving! The best we can do is to continue
if (getLongLongFromObjectOrReply(c,c->argv[3],&incr,NULL) != REDIS_OK) return;
if ((o = hashLookupWriteOrCreate(c,c->argv[1])) == NULL) return;
if ((current = hashGet(o,c->argv[2])) != NULL) {
- if (current->encoding == REDIS_ENCODING_RAW)
- value = strtoll(current->ptr,NULL,10);
- else if (current->encoding == REDIS_ENCODING_INT)
- value = (long)current->ptr;
- else
- redisAssert(1 != 1);
+ if (getLongLongFromObjectOrReply(c,current,&value,
+ "hash value is not an integer") != REDIS_OK) {
+ decrRefCount(current);
+ return;
+ }
decrRefCount(current);
} else {
value = 0;
c->reply = listCreate();
listSetFreeMethod(c->reply,decrRefCount);
listSetDupMethod(c->reply,dupClientReplyValue);
+ initClientMultiState(c);
return c;
}
static void freeFakeClient(struct redisClient *c) {
sdsfree(c->querybuf);
listRelease(c->reply);
+ freeClientMultiState(c);
zfree(c);
}
FILE *fp = fopen(filename,"r");
struct redis_stat sb;
unsigned long long loadedkeys = 0;
+ int appendonly = server.appendonly;
if (redis_fstat(fileno(fp),&sb) != -1 && sb.st_size == 0)
return REDIS_ERR;
exit(1);
}
+ /* Temporarily disable AOF, to prevent EXEC from feeding a MULTI
+ * to the same file we're about to read. */
+ server.appendonly = 0;
+
fakeClient = createFakeClient();
while(1) {
int argc, j;
}
}
}
+
+ /* This point can only be reached when EOF is reached without errors.
+ * If the client is in the middle of a MULTI/EXEC, log error and quit. */
+ if (fakeClient->flags & REDIS_MULTI) goto readerr;
+
fclose(fp);
freeFakeClient(fakeClient);
+ server.appendonly = appendonly;
return REDIS_OK;
readerr:
/* =================== Virtual Memory - Blocking Side ====================== */
-/* substitute the first occurrence of '%p' with the process pid in the
- * swap file name. */
-static void expandVmSwapFilename(void) {
- char *p = strstr(server.vm_swap_file,"%p");
- sds new;
-
- if (!p) return;
- new = sdsempty();
- *p = '\0';
- new = sdscat(new,server.vm_swap_file);
- new = sdscatprintf(new,"%ld",(long) getpid());
- new = sdscat(new,p+2);
- zfree(server.vm_swap_file);
- server.vm_swap_file = new;
-}
-
static void vmInit(void) {
off_t totsize;
int pipefds[2];
size_t stacksize;
+ struct flock fl;
if (server.vm_max_threads != 0)
zmalloc_enable_thread_safeness(); /* we need thread safe zmalloc() */
- expandVmSwapFilename();
redisLog(REDIS_NOTICE,"Using '%s' as swap file",server.vm_swap_file);
+ /* Try to open the old swap file, otherwise create it */
if ((server.vm_fp = fopen(server.vm_swap_file,"r+b")) == NULL) {
server.vm_fp = fopen(server.vm_swap_file,"w+b");
}
if (server.vm_fp == NULL) {
redisLog(REDIS_WARNING,
- "Impossible to open the swap file: %s. Exiting.",
+ "Can't open the swap file: %s. Exiting.",
strerror(errno));
exit(1);
}
server.vm_fd = fileno(server.vm_fp);
+ /* Lock the swap file for writing, this is useful in order to avoid
+ * another instance to use the same swap file for a config error. */
+ fl.l_type = F_WRLCK;
+ fl.l_whence = SEEK_SET;
+ fl.l_start = fl.l_len = 0;
+ if (fcntl(server.vm_fd,F_SETLK,&fl) == -1) {
+ redisLog(REDIS_WARNING,
+ "Can't lock the swap file at '%s': %s. Make sure it is not used by another Redis instance.", server.vm_swap_file, strerror(errno));
+ exit(1);
+ }
+ /* Initialize */
server.vm_next_page = 0;
server.vm_near_pages = 0;
server.vm_stats_used_pages = 0;
return 1;
}
-/* Preload keys needed for the ZUNION and ZINTER commands. */
-static void zunionInterBlockClientOnSwappedKeys(redisClient *c) {
+/* Preload keys for any command with first, last and step values for
+ * the command keys prototype, as defined in the command table. */
+static void waitForMultipleSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv) {
+ int j, last;
+ if (cmd->vm_firstkey == 0) return;
+ last = cmd->vm_lastkey;
+ if (last < 0) last = argc+last;
+ for (j = cmd->vm_firstkey; j <= last; j += cmd->vm_keystep) {
+ redisAssert(j < argc);
+ waitForSwappedKey(c,argv[j]);
+ }
+}
+
+/* Preload keys needed for the ZUNION and ZINTER commands.
+ * Note that the number of keys to preload is user-defined, so we need to
+ * apply a sanity check against argc. */
+static void zunionInterBlockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv) {
int i, num;
- num = atoi(c->argv[2]->ptr);
+ REDIS_NOTUSED(cmd);
+
+ num = atoi(argv[2]->ptr);
+ if (num > (argc-3)) return;
for (i = 0; i < num; i++) {
- waitForSwappedKey(c,c->argv[3+i]);
+ waitForSwappedKey(c,argv[3+i]);
}
}
* Return 1 if the client is marked as blocked, 0 if the client can
* continue as the keys it is going to access appear to be in memory. */
static int blockClientOnSwappedKeys(struct redisCommand *cmd, redisClient *c) {
- int j, last;
-
if (cmd->vm_preload_proc != NULL) {
- cmd->vm_preload_proc(c);
+ cmd->vm_preload_proc(c,cmd,c->argc,c->argv);
} else {
- if (cmd->vm_firstkey == 0) return 0;
- last = cmd->vm_lastkey;
- if (last < 0) last = c->argc+last;
- for (j = cmd->vm_firstkey; j <= last; j += cmd->vm_keystep)
- waitForSwappedKey(c,c->argv[j]);
+ waitForMultipleSwappedKeys(c,cmd,c->argc,c->argv);
}
/* If the client was blocked for at least one key, mark it as blocked. */
projects / redis.git / blobdiff