* POSSIBILITY OF SUCH DAMAGE.
*/
-#define REDIS_VERSION "0.101"
+#define REDIS_VERSION "1.000"
#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
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 void authCommand(redisClient *c);
static void pingCommand(redisClient *c);
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);
/* 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");
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;
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"));
}
ln = listLast(list);
listDelNode(list,ln);
}
- addReply(c,shared.ok);
server.dirty++;
+ addReply(c,shared.ok);
}
}
}
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"
(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;
}
}
}
}
-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;
{"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},
{"processCommand", (unsigned long)processCommand},
{"setupSigSegvAction", (unsigned long)setupSigSegvAction},
{"readQueryFromClient", (unsigned long)readQueryFromClient},
+{"rdbRemoveTempFile", (unsigned long)rdbRemoveTempFile},
{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;
+#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;
-#else /* Linux */
+ #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