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hand written code to turn a long long into a string -> very big speed win

This commit is contained in:
antirez 2010-05-11 12:13:37 +02:00
parent bf02809825
commit e5b7a215e8
1 changed files with 14 additions and 2 deletions
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16
redis.c
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@ -2897,7 +2897,19 @@ static robj *createStringObjectFromLongLong(long long value) {
o->encoding = REDIS_ENCODING_INT;
o->ptr = (void*)((long)value);
} else {
o->ptr = sdscatprintf(sdsempty(),"%lld",value);
char buf[32], *p;
char *c = "0123456789";
unsigned long v;
v = (value < 0) ? -value : value;
p = buf+31; /* point to the last character */
while(v) {
*p-- = c[v%10];
v /= 10;
}
if (value < 0) *p-- = '-';
p++;
o = createObject(REDIS_STRING,sdsnewlen(p,32-(p-buf+1)));
}
}
return o;
@ -3794,7 +3806,7 @@ static robj *rdbLoadIntegerObject(FILE *fp, int enctype) {
val = 0; /* anti-warning */
redisPanic("Unknown RDB integer encoding type");
}
return createObject(REDIS_STRING,sdscatprintf(sdsempty(),"%lld",val));
return createStringObjectFromLongLong(val);
}
static robj *rdbLoadLzfStringObject(FILE*fp) {