-#define MAX_COMMITS (16)
-#define marked(rev) ((rev)->flags & 0xffff)
-#define SEEN 0x10000
-
-static int show_edges = 0;
-
-struct parent {
- struct revision *parent;
- struct parent *next;
-};
-
-struct revision {
- unsigned int flags;
- unsigned char sha1[20];
- struct parent *parent;
-};
-
-static struct revision **revs;
-static int nr_revs, rev_allocs;
-
-static int find_rev(unsigned char *sha1)
-{
- int first = 0, last = nr_revs;
-
- while (first < last) {
- int next = (first + last) / 2;
- struct revision *rev = revs[next];
- int cmp;
-
- cmp = memcmp(sha1, rev->sha1, 20);
- if (!cmp)
- return next;
- if (cmp < 0) {
- last = next;
- continue;
- }
- first = next+1;
- }
- return -first-1;
-}
-
-static struct revision *lookup_rev(unsigned char *sha1)
-{
- int pos = find_rev(sha1);
- struct revision *n;
-
- if (pos >= 0)
- return revs[pos];
-
- pos = -pos-1;
-
- if (rev_allocs == nr_revs) {
- rev_allocs = alloc_nr(rev_allocs);
- revs = realloc(revs, rev_allocs * sizeof(struct revision *));
- }
- n = malloc(sizeof(struct revision));