X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=fsck-cache.c;h=3fbcd2c7e99fa5e27fa7edad0e2bd65d3b557fe7;hb=13e897e58072678cdae3ec1db51cc91110dc559d;hp=e7014a064e1a1562b35b7c5c95fb0e9843a54ebd;hpb=bcee6fd8e7164aa7a4170f109af8347d88f0175e;p=git.git diff --git a/fsck-cache.c b/fsck-cache.c index e7014a06..3fbcd2c7 100644 --- a/fsck-cache.c +++ b/fsck-cache.c @@ -3,120 +3,11 @@ #include #include -/* - * The low 16 bits of the "flags" field shows whether - * a commit is part of the path to the root for that - * parent. - * - * Bit 16 is an internal flag that we've seen the - * definition for this rev, and not just seen it as - * a parent target. - */ -#define MAX_COMMITS (16) -#define marked(rev) ((rev)->flags & 0xffff) -#define SEEN 0x10000 -#define USED 0x20000 -#define REACHABLE 0x40000 +#include "revision.h" static int show_unreachable = 0; static unsigned char head_sha1[20]; -struct parent { - struct revision *parent; - struct parent *next; -}; - -struct revision { - unsigned int flags; - unsigned char sha1[20]; - unsigned long date; - 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)); - - n->flags = 0; - memcpy(n->sha1, sha1, 20); - n->parent = NULL; - - /* Insert it into the right place */ - memmove(revs + pos + 1, revs + pos, (nr_revs - pos) * sizeof(struct revision *)); - revs[pos] = n; - nr_revs++; - - return n; -} - -static struct revision *add_relationship(struct revision *rev, unsigned char *needs) -{ - struct revision *parent_rev = lookup_rev(needs); - struct parent **pp = &rev->parent, *p; - - while ((p = *pp) != NULL) { - if (p->parent == parent_rev) - return parent_rev; - pp = &p->next; - } - - p = malloc(sizeof(*p)); - p->parent = parent_rev; - p->next = NULL; - *pp = p; - return parent_rev; -} - -static void mark_reachable(struct revision *rev) -{ - struct parent *p = rev->parent; - - /* If we've been here already, don't bother */ - if (rev->flags & REACHABLE) - return; - rev->flags |= REACHABLE | USED; - while (p) { - mark_reachable(p->parent); - p = p->next; - } -} - static void check_connectivity(void) { int i;