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store static function pointer for a useful stack trace

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hrothgar 2009-06-06 08:50:43 +00:00
parent fe3bbfbe16
commit de96dbfedf
1 changed files with 122 additions and 4 deletions
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126
redis.c
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@ -273,6 +273,11 @@ struct redisCommand {
int flags;
};
struct redisFunctionSym {
char *name;
long pointer;
};
typedef struct _redisSortObject {
robj *obj;
union {
@ -320,6 +325,7 @@ 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 freeMemoryIfNeeded(void);
static int processCommand(redisClient *c);
static void authCommand(redisClient *c);
static void pingCommand(redisClient *c);
@ -444,7 +450,91 @@ static struct redisCommand cmdTable[] = {
{"debug",debugCommand,-2,REDIS_CMD_INLINE},
{NULL,NULL,0,0}
};
static struct redisFunctionSym symsTable[] = {
{"freeStringObject", (long)freeStringObject},
{"freeListObject", (long)freeListObject},
{"freeSetObject", (long)freeSetObject},
{"decrRefCount", (long)decrRefCount},
{"createObject", (long)createObject},
{"freeClient", (long)freeClient},
{"rdbLoad", (long)rdbLoad},
{"addReply", (long)addReply},
{"addReplySds", (long)addReplySds},
{"incrRefCount", (long)incrRefCount},
{"rdbSaveBackground", (long)rdbSaveBackground},
{"createStringObject", (long)createStringObject},
{"replicationFeedSlaves", (long)replicationFeedSlaves},
{"syncWithMaster", (long)syncWithMaster},
{"tryObjectSharing", (long)tryObjectSharing},
{"removeExpire", (long)removeExpire},
{"expireIfNeeded", (long)expireIfNeeded},
{"deleteIfVolatile", (long)deleteIfVolatile},
{"deleteKey", (long)deleteKey},
{"getExpire", (long)getExpire},
{"setExpire", (long)setExpire},
{"updateSalvesWaitingBgsave", (long)updateSalvesWaitingBgsave},
{"freeMemoryIfNeeded", (long)freeMemoryIfNeeded},
{"authCommand", (long)authCommand},
{"pingCommand", (long)pingCommand},
{"echoCommand", (long)echoCommand},
{"setCommand", (long)setCommand},
{"setnxCommand", (long)setnxCommand},
{"getCommand", (long)getCommand},
{"delCommand", (long)delCommand},
{"existsCommand", (long)existsCommand},
{"incrCommand", (long)incrCommand},
{"decrCommand", (long)decrCommand},
{"incrbyCommand", (long)incrbyCommand},
{"decrbyCommand", (long)decrbyCommand},
{"selectCommand", (long)selectCommand},
{"randomkeyCommand", (long)randomkeyCommand},
{"keysCommand", (long)keysCommand},
{"dbsizeCommand", (long)dbsizeCommand},
{"lastsaveCommand", (long)lastsaveCommand},
{"saveCommand", (long)saveCommand},
{"bgsaveCommand", (long)bgsaveCommand},
{"shutdownCommand", (long)shutdownCommand},
{"moveCommand", (long)moveCommand},
{"renameCommand", (long)renameCommand},
{"renamenxCommand", (long)renamenxCommand},
{"lpushCommand", (long)lpushCommand},
{"rpushCommand", (long)rpushCommand},
{"lpopCommand", (long)lpopCommand},
{"rpopCommand", (long)rpopCommand},
{"llenCommand", (long)llenCommand},
{"lindexCommand", (long)lindexCommand},
{"lrangeCommand", (long)lrangeCommand},
{"ltrimCommand", (long)ltrimCommand},
{"typeCommand", (long)typeCommand},
{"lsetCommand", (long)lsetCommand},
{"saddCommand", (long)saddCommand},
{"sremCommand", (long)sremCommand},
{"smoveCommand", (long)smoveCommand},
{"sismemberCommand", (long)sismemberCommand},
{"scardCommand", (long)scardCommand},
{"sinterCommand", (long)sinterCommand},
{"sinterstoreCommand", (long)sinterstoreCommand},
{"sunionCommand", (long)sunionCommand},
{"sunionstoreCommand", (long)sunionstoreCommand},
{"sdiffCommand", (long)sdiffCommand},
{"sdiffstoreCommand", (long)sdiffstoreCommand},
{"syncCommand", (long)syncCommand},
{"flushdbCommand", (long)flushdbCommand},
{"flushallCommand", (long)flushallCommand},
{"sortCommand", (long)sortCommand},
{"lremCommand", (long)lremCommand},
{"infoCommand", (long)infoCommand},
{"mgetCommand", (long)mgetCommand},
{"monitorCommand", (long)monitorCommand},
{"expireCommand", (long)expireCommand},
{"getSetCommand", (long)getSetCommand},
{"ttlCommand", (long)ttlCommand},
{"slaveofCommand", (long)slaveofCommand},
{"debugCommand", (long)debugCommand},
{"processCommand", (long)processCommand},
{"setupSigSegvAction", (long)setupSigSegvAction},
{NULL,0}
};
/*============================ Utility functions ============================ */
/* Glob-style pattern matching. */
@ -4080,12 +4170,30 @@ static void debugCommand(redisClient *c) {
"-ERR Syntax error, try DEBUG [SEGFAULT|OBJECT <key>]\r\n"));
}
}
char *findFuncName(void *pointer, long *offset){
int i, ret=-1;
long val, off;
for(i=0; symsTable[i].pointer!=0; i++){
val=(long)pointer-symsTable[i].pointer;
if(val>=0 && (off<0 || val <= off)){
off=val;
ret=i;
}
}
if(ret<0)
*offset=0;
else
*offset=off;
return ret>=0?symsTable[ret].name:"unknown";
}
static void segvHandler (int sig, siginfo_t *info, void *secret) {
void *trace[100];
char **messages = (char **)NULL;
char *tmp;
int i, trace_size = 0;
long offset=0;
ucontext_t *uc = (ucontext_t *)secret;
redisLog(REDIS_DEBUG, "Segmentation fault -%d- Redis %s", sig, REDIS_VERSION );
@ -4094,13 +4202,23 @@ static void segvHandler (int sig, siginfo_t *info, void *secret) {
trace_size = backtrace(trace, 100);
/* overwrite sigaction with caller's address */
char pointer[trace_size][11];
/* overwrite sigaction with caller's address */
trace[1] = (void *) uc->uc_mcontext.gregs[REG_EIP];
for (i=1; i<trace_size; ++i)
snprintf(pointer[i],11,"[%p]", trace[i]);
messages = backtrace_symbols(trace, trace_size);
for (i=1; i<trace_size; ++i)
redisLog(REDIS_DEBUG,"[bt] %s", messages[i]);
for (i=1; i<trace_size; ++i){
tmp=strstr(messages[i],pointer[i]);
if((tmp-2)[0]!=')'){
char *a=findFuncName(trace[i], &offset);
redisLog(REDIS_DEBUG,"[bt] (%s+%x) %s", a, (unsigned int)offset, tmp);
}
else
redisLog(REDIS_DEBUG,"[bt] %s", messages[i]);
}
free(messages);
exit(0);