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speedup the wbuf_int and wbuf_bytes functions based on profile

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data from a long benchmark-test.



git-svn-id: file:///svn/tokudb@155 c7de825b-a66e-492c-adef-691d508d4ae1
This commit is contained in:
Rich Prohaska
2007-08-17 12:06:31 +00:00
parent cda74f7896
commit f206871b8e
1 changed files with 20 additions and 6 deletions
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26
newbrt/brt-serialize.c
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@@ -25,17 +25,31 @@ void wbuf_char (struct cursor *w, int ch) {
}
void wbuf_int (struct cursor *w, unsigned int i) {
wbuf_char(w, (i>>24)&0xff);
wbuf_char(w, (i>>16)&0xff);
wbuf_char(w, (i>>8)&0xff);
wbuf_char(w, (i>>0)&0xff);
#if 0
wbuf_char(w, i>>24);
wbuf_char(w, i>>16);
wbuf_char(w, i>>8);
wbuf_char(w, i>>0);
#else
assert(w->ndone + 4 <= w->size);
w->buf[w->ndone+0] = i>>24;
w->buf[w->ndone+1] = i>>16;
w->buf[w->ndone+2] = i>>8;
w->buf[w->ndone+3] = i>>0;
w->ndone += 4;
#endif
}
void wbuf_bytes (struct cursor *w, bytevec bytes_bv, int nbytes) {
const unsigned char *bytes=bytes_bv;
int i;
wbuf_int(w, nbytes);
for (i=0; i<nbytes; i++) wbuf_char(w, bytes[i]);
#if 0
{ int i; for (i=0; i<nbytes; i++) wbuf_char(w, bytes[i]); }
#else
assert(w->ndone + nbytes <= w->size);
memcpy(w->buf + w->ndone, bytes, nbytes);
w->ndone += nbytes;
#endif
}
void wbuf_diskoff (struct cursor *w, diskoff off) {