if (!tag_table || !targets)
out_of_memory("build_hash_table");
- for (i=0;i<s->count;i++) {
+ for (i=0;i<(int) s->count;i++) {
targets[i].i = i;
targets[i].t = gettag(s->sums[i].sum1);
}
static OFF_T last_match;
+/**
+ * Transmit a literal and/or match token.
+ *
+ * This delightfully-named function is called either when we find a
+ * match and need to transmit all the unmatched data leading up to it,
+ * or when we get bored of accumulating literal data and just need to
+ * transmit it. As a result of this second case, it is called even if
+ * we have not matched at all!
+ *
+ * @param i If >0, the number of a matched token. If 0, indicates we
+ * have only literal data.
+ **/
static void matched(int f,struct sum_struct *s,struct map_struct *buf,
OFF_T offset,int i)
{
else
last_match = offset;
- if (buf)
+ if (buf) {
show_progress(last_match, buf->file_size);
- if (i == -1) end_progress(buf->file_size);
+ if (i == -1) end_progress(buf->file_size);
+ }
}
last_i = -1;
if (verbose > 2)
- rprintf(FINFO,"hash search b=%d len=%.0f\n",s->n,(double)len);
+ rprintf(FINFO,"hash search b=%ld len=%.0f\n",
+ (long) s->n, (double)len);
- k = MIN(len, s->n);
+ /* cast is to make s->n signed; it should always be reasonably
+ * small */
+ k = MIN(len, (OFF_T) s->n);
map = (schar *)map_ptr(buf,0,k);
end = len + 1 - s->sums[s->count-1].len;
if (verbose > 3)
- rprintf(FINFO,"hash search s->n=%d len=%.0f count=%d\n",
- s->n,(double)len,s->count);
+ rprintf(FINFO, "hash search s->n=%ld len=%.0f count=%ld\n",
+ (long) s->n, (double) len, (long) s->count);
do {
tag t = gettag2(s1,s2);
sum = (s1 & 0xffff) | (s2 << 16);
tag_hits++;
- for (; j<s->count && targets[j].t == t; j++) {
+ for (; j < (int) s->count && targets[j].t == t; j++) {
int l, i = targets[j].i;
if (sum != s->sums[i].sum1) continue;
/* we've found a match, but now check to see
if last_i can hint at a better match */
- for (j++; j<s->count && targets[j].t == t; j++) {
+ for (j++; j < (int) s->count && targets[j].t == t; j++) {
int i2 = targets[j].i;
if (i2 == last_i + 1) {
if (sum != s->sums[i2].sum1) break;
match. The 3 reads are caused by the
running match, the checksum update and the
literal send. */
- if (offset-last_match >= CHUNK_SIZE+s->n &&
+ if (offset > last_match &&
+ offset-last_match >= CHUNK_SIZE+s->n &&
(end-offset > CHUNK_SIZE)) {
matched(f,s,buf,offset - s->n, -2);
}
}
-void match_sums(int f,struct sum_struct *s,struct map_struct *buf,OFF_T len)
+/**
+ * Scan through a origin file, looking for sections that match
+ * checksums from the generator, and transmit either literal or token
+ * data.
+ *
+ * Also calculates the MD4 checksum of the whole file, using the md
+ * accumulator. This is transmitted with the file as protection
+ * against corruption on the wire.
+ *
+ * @param s Checksums received from the generator. If <tt>s->count ==
+ * 0</tt>, then there are actually no checksums for this file.
+ *
+ * @param len Length of the file to send.
+ **/
+void match_sums(int f, struct sum_struct *s, struct map_struct *buf, OFF_T len)
{
char file_sum[MD4_SUM_LENGTH];
+ extern int write_batch; /* dw */
last_match = 0;
false_alarms = 0;
if (verbose > 2)
rprintf(FINFO,"sending file_sum\n");
write_buf(f,file_sum,MD4_SUM_LENGTH);
+ if (write_batch) /* dw */
+ write_batch_delta_file(file_sum, MD4_SUM_LENGTH);
}
if (targets) {