#include "zmalloc.h"
#include "util.h"
#include "ziplist.h"
-#include "endian.h"
+#include "endianconv.h"
#define ZIP_END 255
#define ZIP_BIGLEN 254
#define ZIPLIST_LENGTH(zl) (*((uint16_t*)((zl)+sizeof(uint32_t)*2)))
#define ZIPLIST_HEADER_SIZE (sizeof(uint32_t)*2+sizeof(uint16_t))
#define ZIPLIST_ENTRY_HEAD(zl) ((zl)+ZIPLIST_HEADER_SIZE)
-#define ZIPLIST_ENTRY_TAIL(zl) ((zl)+ZIPLIST_TAIL_OFFSET(zl))
-#define ZIPLIST_ENTRY_END(zl) ((zl)+ZIPLIST_BYTES(zl)-1)
+#define ZIPLIST_ENTRY_TAIL(zl) ((zl)+intrev32ifbe(ZIPLIST_TAIL_OFFSET(zl)))
+#define ZIPLIST_ENTRY_END(zl) ((zl)+intrev32ifbe(ZIPLIST_BYTES(zl))-1)
/* We know a positive increment can only be 1 because entries can only be
* pushed one at a time. */
#define ZIPLIST_INCR_LENGTH(zl,incr) { \
- if (ZIPLIST_LENGTH(zl) < UINT16_MAX) ZIPLIST_LENGTH(zl)+=incr; }
+ if (ZIPLIST_LENGTH(zl) < UINT16_MAX) \
+ ZIPLIST_LENGTH(zl) = intrev16ifbe(intrev16ifbe(ZIPLIST_LENGTH(zl))+incr); \
+}
typedef struct zlentry {
unsigned int prevrawlensize, prevrawlen;
ret = i16;
} else if (encoding == ZIP_INT_32B) {
memcpy(&i32,p,sizeof(i32));
- memrev16ifbe(&i32);
+ memrev32ifbe(&i32);
ret = i32;
} else if (encoding == ZIP_INT_64B) {
memcpy(&i64,p,sizeof(i64));
- memrev16ifbe(&i64);
+ memrev64ifbe(&i64);
ret = i64;
} else {
assert(NULL);
unsigned char *ziplistNew(void) {
unsigned int bytes = ZIPLIST_HEADER_SIZE+1;
unsigned char *zl = zmalloc(bytes);
- ZIPLIST_BYTES(zl) = bytes;
- ZIPLIST_TAIL_OFFSET(zl) = ZIPLIST_HEADER_SIZE;
+ ZIPLIST_BYTES(zl) = intrev32ifbe(bytes);
+ ZIPLIST_TAIL_OFFSET(zl) = intrev32ifbe(ZIPLIST_HEADER_SIZE);
ZIPLIST_LENGTH(zl) = 0;
zl[bytes-1] = ZIP_END;
return zl;
/* Resize the ziplist. */
static unsigned char *ziplistResize(unsigned char *zl, unsigned int len) {
zl = zrealloc(zl,len);
- ZIPLIST_BYTES(zl) = len;
+ ZIPLIST_BYTES(zl) = intrev32ifbe(len);
zl[len-1] = ZIP_END;
return zl;
}
* The pointer "p" points to the first entry that does NOT need to be
* updated, i.e. consecutive fields MAY need an update. */
static unsigned char *__ziplistCascadeUpdate(unsigned char *zl, unsigned char *p) {
- size_t curlen = ZIPLIST_BYTES(zl), rawlen, rawlensize;
+ size_t curlen = intrev32ifbe(ZIPLIST_BYTES(zl)), rawlen, rawlensize;
size_t offset, noffset, extra;
unsigned char *np;
zlentry cur, next;
noffset = np-zl;
/* Update tail offset when next element is not the tail element. */
- if ((zl+ZIPLIST_TAIL_OFFSET(zl)) != np)
- ZIPLIST_TAIL_OFFSET(zl) += extra;
+ if ((zl+intrev32ifbe(ZIPLIST_TAIL_OFFSET(zl))) != np) {
+ ZIPLIST_TAIL_OFFSET(zl) =
+ intrev32ifbe(intrev32ifbe(ZIPLIST_TAIL_OFFSET(zl))+extra);
+ }
/* Move the tail to the back. */
memmove(np+rawlensize,
zipPrevEncodeLength(p-nextdiff,first.prevrawlen);
/* Update offset for tail */
- ZIPLIST_TAIL_OFFSET(zl) -= totlen;
+ ZIPLIST_TAIL_OFFSET(zl) =
+ intrev32ifbe(intrev32ifbe(ZIPLIST_TAIL_OFFSET(zl))-totlen);
/* When the tail contains more than one entry, we need to take
* "nextdiff" in account as well. Otherwise, a change in the
* size of prevlen doesn't have an effect on the *tail* offset. */
tail = zipEntry(p);
- if (p[tail.headersize+tail.len] != ZIP_END)
- ZIPLIST_TAIL_OFFSET(zl) += nextdiff;
+ if (p[tail.headersize+tail.len] != ZIP_END) {
+ ZIPLIST_TAIL_OFFSET(zl) =
+ intrev32ifbe(intrev32ifbe(ZIPLIST_TAIL_OFFSET(zl))+nextdiff);
+ }
/* Move tail to the front of the ziplist */
- memmove(first.p,p-nextdiff,ZIPLIST_BYTES(zl)-(p-zl)-1+nextdiff);
+ memmove(first.p,p-nextdiff,
+ intrev32ifbe(ZIPLIST_BYTES(zl))-(p-zl)-1+nextdiff);
} else {
/* The entire tail was deleted. No need to move memory. */
- ZIPLIST_TAIL_OFFSET(zl) = (first.p-zl)-first.prevrawlen;
+ ZIPLIST_TAIL_OFFSET(zl) =
+ intrev32ifbe((first.p-zl)-first.prevrawlen);
}
/* Resize and update length */
offset = first.p-zl;
- zl = ziplistResize(zl, ZIPLIST_BYTES(zl)-totlen+nextdiff);
+ zl = ziplistResize(zl, intrev32ifbe(ZIPLIST_BYTES(zl))-totlen+nextdiff);
ZIPLIST_INCR_LENGTH(zl,-deleted);
p = zl+offset;
/* Insert item at "p". */
static unsigned char *__ziplistInsert(unsigned char *zl, unsigned char *p, unsigned char *s, unsigned int slen) {
- size_t curlen = ZIPLIST_BYTES(zl), reqlen, prevlen = 0;
+ size_t curlen = intrev32ifbe(ZIPLIST_BYTES(zl)), reqlen, prevlen = 0;
size_t offset;
int nextdiff = 0;
unsigned char encoding = 0;
zipPrevEncodeLength(p+reqlen,reqlen);
/* Update offset for tail */
- ZIPLIST_TAIL_OFFSET(zl) += reqlen;
+ ZIPLIST_TAIL_OFFSET(zl) =
+ intrev32ifbe(intrev32ifbe(ZIPLIST_TAIL_OFFSET(zl))+reqlen);
/* When the tail contains more than one entry, we need to take
* "nextdiff" in account as well. Otherwise, a change in the
* size of prevlen doesn't have an effect on the *tail* offset. */
tail = zipEntry(p+reqlen);
- if (p[reqlen+tail.headersize+tail.len] != ZIP_END)
- ZIPLIST_TAIL_OFFSET(zl) += nextdiff;
+ if (p[reqlen+tail.headersize+tail.len] != ZIP_END) {
+ ZIPLIST_TAIL_OFFSET(zl) =
+ intrev32ifbe(intrev32ifbe(ZIPLIST_TAIL_OFFSET(zl))+nextdiff);
+ }
} else {
/* This element will be the new tail. */
- ZIPLIST_TAIL_OFFSET(zl) = p-zl;
+ ZIPLIST_TAIL_OFFSET(zl) = intrev32ifbe(p-zl);
}
/* When nextdiff != 0, the raw length of the next entry has changed, so
/* Return length of ziplist. */
unsigned int ziplistLen(unsigned char *zl) {
unsigned int len = 0;
- if (ZIPLIST_LENGTH(zl) < UINT16_MAX) {
- len = ZIPLIST_LENGTH(zl);
+ if (intrev16ifbe(ZIPLIST_LENGTH(zl)) < UINT16_MAX) {
+ len = intrev16ifbe(ZIPLIST_LENGTH(zl));
} else {
unsigned char *p = zl+ZIPLIST_HEADER_SIZE;
while (*p != ZIP_END) {
}
/* Re-store length if small enough */
- if (len < UINT16_MAX) ZIPLIST_LENGTH(zl) = len;
+ if (len < UINT16_MAX) ZIPLIST_LENGTH(zl) = intrev16ifbe(len);
}
return len;
}
/* Return ziplist blob size in bytes. */
size_t ziplistBlobLen(unsigned char *zl) {
- return ZIPLIST_BYTES(zl);
+ return intrev32ifbe(ZIPLIST_BYTES(zl));
}
void ziplistRepr(unsigned char *zl) {
"{total bytes %d} "
"{length %u}\n"
"{tail offset %u}\n",
- ZIPLIST_BYTES(zl),
- ZIPLIST_LENGTH(zl),
- ZIPLIST_TAIL_OFFSET(zl));
+ intrev32ifbe(ZIPLIST_BYTES(zl)),
+ intrev16ifbe(ZIPLIST_LENGTH(zl)),
+ intrev32ifbe(ZIPLIST_TAIL_OFFSET(zl)));
p = ZIPLIST_ENTRY_HEAD(zl);
while(*p != ZIP_END) {
entry = zipEntry(p);
zl = ziplistDeleteRange(zl,0,1);
}
printf("List size: %8d, bytes: %8d, %dx push+pop (%s): %6lld usec\n",
- i,ZIPLIST_BYTES(zl),num,posstr[pos],usec()-start);
+ i,intrev32ifbe(ZIPLIST_BYTES(zl)),num,posstr[pos],usec()-start);
zfree(zl);
}
}
projects / redis.git / blobdiff