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* Add optimization in gdiff based on function size boundaries

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- Makes bin diffing 5 times faster
This commit is contained in:
Nibble 2010-12-05 19:43:12 +01:00
parent 92baebdadd
commit ea73472ee6
1 changed files with 13 additions and 4 deletions
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17
libr/core/gdiff.c
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@ -54,9 +54,9 @@ static void gdiff_diff_bb(RAnalFcn *mfcn, RAnalFcn *mfcn2, RList *bbs, RList *bb
bb2->addr >= mfcn2->addr && bb2->addr < mfcn2->addr + mfcn2->size) {
r_diff_buffers_distance (NULL, bb->fingerprint, bb->size,
bb2->fingerprint, bb2->size, NULL, &t);
#if 0
eprintf ("BB: %llx - %llx => %i - %i - %i => %f\n", bb->addr, bb2->addr,
bb->ninstr, bb2->ninstr, p, t);
#if 0
eprintf ("BB: %llx - %llx => %lli - %lli => %f\n", bb->addr, bb2->addr,
bb->size, bb->size, t);
#endif
if (t > THRESHOLDBB && t > ot) {
ot = t;
@ -82,6 +82,7 @@ static void gdiff_diff_bb(RAnalFcn *mfcn, RAnalFcn *mfcn2, RList *bbs, RList *bb
static void gdiff_diff_fcn(RList *fcns, RList *fcns2, RList *bbs, RList *bbs2) {
RAnalFcn *fcn, *fcn2, *mfcn, *mfcn2;
RListIter *iter, *iter2;
ut64 maxsize, minsize;
double t, ot;
iter = r_list_iterator (fcns);
@ -94,7 +95,15 @@ static void gdiff_diff_fcn(RList *fcns, RList *fcns2, RList *bbs, RList *bbs2) {
iter2 = r_list_iterator (fcns2);
while (r_list_iter_next (iter2)) {
fcn2 = r_list_iter_get (iter2);
if (fcn2->type != R_ANAL_FCN_TYPE_FCN || fcn2->diff->type != R_ANAL_DIFF_TYPE_NULL)
if (fcn->size > fcn2->size) {
maxsize = fcn->size;
minsize = fcn2->size;
} else {
maxsize = fcn2->size;
minsize = fcn->size;
}
if (fcn2->type != R_ANAL_FCN_TYPE_FCN || fcn2->diff->type != R_ANAL_DIFF_TYPE_NULL ||
(maxsize * THRESHOLDFCN > minsize))
continue;
r_diff_buffers_distance (NULL, fcn->fingerprint, fcn->size,
fcn2->fingerprint, fcn2->size, NULL, &t);