X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/f85cd526c155a1b1302b2d080502d40227af00ec..af0b220756571bc8faf57a0c7b7389dd86a60376:/src/t_string.c?ds=inline diff --git a/src/t_string.c b/src/t_string.c index ca3f564c..00510c71 100644 --- a/src/t_string.c +++ b/src/t_string.c @@ -1,4 +1,34 @@ +/* + * Copyright (c) 2009-2012, Salvatore Sanfilippo + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Redis nor the names of its contributors may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + #include "redis.h" +#include /* isnan(), isinf() */ /*----------------------------------------------------------------------------- * String Commands @@ -12,41 +42,47 @@ static int checkStringLength(redisClient *c, long long size) { return REDIS_OK; } -void setGenericCommand(redisClient *c, int nx, robj *key, robj *val, robj *expire) { - long seconds = 0; /* initialized to avoid an harmness warning */ +void setGenericCommand(redisClient *c, int nx, robj *key, robj *val, robj *expire, int unit) { + long long milliseconds = 0; /* initialized to avoid an harmness warning */ if (expire) { - if (getLongFromObjectOrReply(c, expire, &seconds, NULL) != REDIS_OK) + if (getLongLongFromObjectOrReply(c, expire, &milliseconds, NULL) != REDIS_OK) return; - if (seconds <= 0) { + if (milliseconds <= 0) { addReplyError(c,"invalid expire time in SETEX"); return; } + if (unit == UNIT_SECONDS) milliseconds *= 1000; } - if (lookupKeyWrite(c->db,key) != NULL && nx) { + if (nx && lookupKeyWrite(c->db,key) != NULL) { addReply(c,shared.czero); return; } setKey(c->db,key,val); server.dirty++; - if (expire) setExpire(c->db,key,time(NULL)+seconds); + if (expire) setExpire(c->db,key,mstime()+milliseconds); addReply(c, nx ? shared.cone : shared.ok); } void setCommand(redisClient *c) { c->argv[2] = tryObjectEncoding(c->argv[2]); - setGenericCommand(c,0,c->argv[1],c->argv[2],NULL); + setGenericCommand(c,0,c->argv[1],c->argv[2],NULL,0); } void setnxCommand(redisClient *c) { c->argv[2] = tryObjectEncoding(c->argv[2]); - setGenericCommand(c,1,c->argv[1],c->argv[2],NULL); + setGenericCommand(c,1,c->argv[1],c->argv[2],NULL,0); } void setexCommand(redisClient *c) { c->argv[3] = tryObjectEncoding(c->argv[3]); - setGenericCommand(c,0,c->argv[1],c->argv[3],c->argv[2]); + setGenericCommand(c,0,c->argv[1],c->argv[3],c->argv[2],UNIT_SECONDS); +} + +void psetexCommand(redisClient *c) { + c->argv[3] = tryObjectEncoding(c->argv[3]); + setGenericCommand(c,0,c->argv[1],c->argv[3],c->argv[2],UNIT_MILLISECONDS); } int getGenericCommand(redisClient *c) { @@ -73,105 +109,6 @@ void getsetCommand(redisClient *c) { c->argv[2] = tryObjectEncoding(c->argv[2]); setKey(c->db,c->argv[1],c->argv[2]); server.dirty++; - removeExpire(c->db,c->argv[1]); -} - -static int getBitOffsetFromArgument(redisClient *c, robj *o, size_t *offset) { - long long loffset; - char *err = "bit offset is not an integer or out of range"; - - if (getLongLongFromObjectOrReply(c,o,&loffset,err) != REDIS_OK) - return REDIS_ERR; - - /* Limit offset to 512MB in bytes */ - if ((loffset < 0) || ((unsigned long long)loffset >> 3) >= (512*1024*1024)) - { - addReplyError(c,err); - return REDIS_ERR; - } - - *offset = (size_t)loffset; - return REDIS_OK; -} - -void setbitCommand(redisClient *c) { - robj *o; - char *err = "bit is not an integer or out of range"; - size_t bitoffset; - int byte, bit; - int byteval, bitval; - long on; - - if (getBitOffsetFromArgument(c,c->argv[2],&bitoffset) != REDIS_OK) - return; - - if (getLongFromObjectOrReply(c,c->argv[3],&on,err) != REDIS_OK) - return; - - /* Bits can only be set or cleared... */ - if (on & ~1) { - addReplyError(c,err); - return; - } - - o = lookupKeyWrite(c->db,c->argv[1]); - if (o == NULL) { - o = createObject(REDIS_STRING,sdsempty()); - dbAdd(c->db,c->argv[1],o); - } else { - if (checkType(c,o,REDIS_STRING)) return; - - /* Create a copy when the object is shared or encoded. */ - if (o->refcount != 1 || o->encoding != REDIS_ENCODING_RAW) { - robj *decoded = getDecodedObject(o); - o = createStringObject(decoded->ptr, sdslen(decoded->ptr)); - decrRefCount(decoded); - dbOverwrite(c->db,c->argv[1],o); - } - } - - /* Grow sds value to the right length if necessary */ - byte = bitoffset >> 3; - o->ptr = sdsgrowzero(o->ptr,byte+1); - - /* Get current values */ - byteval = ((char*)o->ptr)[byte]; - bit = 7 - (bitoffset & 0x7); - bitval = byteval & (1 << bit); - - /* Update byte with new bit value and return original value */ - byteval &= ~(1 << bit); - byteval |= ((on & 0x1) << bit); - ((char*)o->ptr)[byte] = byteval; - signalModifiedKey(c->db,c->argv[1]); - server.dirty++; - addReply(c, bitval ? shared.cone : shared.czero); -} - -void getbitCommand(redisClient *c) { - robj *o; - char llbuf[32]; - size_t bitoffset; - size_t byte, bit; - size_t bitval = 0; - - if (getBitOffsetFromArgument(c,c->argv[2],&bitoffset) != REDIS_OK) - return; - - if ((o = lookupKeyReadOrReply(c,c->argv[1],shared.czero)) == NULL || - checkType(c,o,REDIS_STRING)) return; - - byte = bitoffset >> 3; - bit = 7 - (bitoffset & 0x7); - if (o->encoding != REDIS_ENCODING_RAW) { - if (byte < (size_t)ll2string(llbuf,sizeof(llbuf),(long)o->ptr)) - bitval = llbuf[byte] & (1 << bit); - } else { - if (byte < sdslen(o->ptr)) - bitval = ((char*)o->ptr)[byte] & (1 << bit); - } - - addReply(c, bitval ? shared.cone : shared.czero); } void setrangeCommand(redisClient *c) { @@ -338,11 +275,12 @@ void incrDecrCommand(redisClient *c, long long incr) { if (getLongLongFromObjectOrReply(c,o,&value,NULL) != REDIS_OK) return; oldvalue = value; - value += incr; - if ((incr < 0 && value > oldvalue) || (incr > 0 && value < oldvalue)) { + if ((incr < 0 && oldvalue < 0 && incr < (LLONG_MIN-oldvalue)) || + (incr > 0 && oldvalue > 0 && incr > (LLONG_MAX-oldvalue))) { addReplyError(c,"increment or decrement would overflow"); return; } + value += incr; new = createStringObjectFromLongLong(value); if (o) dbOverwrite(c->db,c->argv[1],new); @@ -377,6 +315,39 @@ void decrbyCommand(redisClient *c) { incrDecrCommand(c,-incr); } +void incrbyfloatCommand(redisClient *c) { + long double incr, value; + robj *o, *new, *aux; + + o = lookupKeyWrite(c->db,c->argv[1]); + if (o != NULL && checkType(c,o,REDIS_STRING)) return; + if (getLongDoubleFromObjectOrReply(c,o,&value,NULL) != REDIS_OK || + getLongDoubleFromObjectOrReply(c,c->argv[2],&incr,NULL) != REDIS_OK) + return; + + value += incr; + if (isnan(value) || isinf(value)) { + addReplyError(c,"increment would produce NaN or Infinity"); + return; + } + new = createStringObjectFromLongDouble(value); + if (o) + dbOverwrite(c->db,c->argv[1],new); + else + dbAdd(c->db,c->argv[1],new); + signalModifiedKey(c->db,c->argv[1]); + server.dirty++; + addReplyBulk(c,new); + + /* Always replicate INCRBYFLOAT as a SET command with the final value + * in order to make sure that differences in float pricision or formatting + * will not create differences in replicas or after an AOF restart. */ + aux = createStringObject("SET",3); + rewriteClientCommandArgument(c,0,aux); + decrRefCount(aux); + rewriteClientCommandArgument(c,2,new); +} + void appendCommand(redisClient *c) { size_t totlen; robj *o, *append; @@ -422,4 +393,3 @@ void strlenCommand(redisClient *c) { checkType(c,o,REDIS_STRING)) return; addReplyLongLong(c,stringObjectLen(o)); } -