Andrew's git - gitweb.git/blob

d03f8294eea9793bc93a44423f49e039888a9ffb
   1#include "cache.h"
   2#include "refs.h"
   3#include "tag.h"
   4#include "commit.h"
   5#include "blob.h"
   6#include "diff.h"
   7#include "revision.h"
   8#include "reachable.h"
   9#include "cache-tree.h"
  10#include "progress.h"
  11#include "list-objects.h"
  12
  13struct connectivity_progress {
  14        struct progress *progress;
  15        unsigned long count;
  16};
  17
  18static void update_progress(struct connectivity_progress *cp)
  19{
  20        cp->count++;
  21        if ((cp->count & 1023) == 0)
  22                display_progress(cp->progress, cp->count);
  23}
  24
  25static int add_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
  26{
  27        struct object *object = parse_object_or_die(sha1, path);
  28        struct rev_info *revs = (struct rev_info *)cb_data;
  29
  30        add_pending_object(revs, object, "");
  31
  32        return 0;
  33}
  34
  35static void add_one_tree(const unsigned char *sha1, struct rev_info *revs)
  36{
  37        struct tree *tree = lookup_tree(sha1);
  38        if (tree)
  39                add_pending_object(revs, &tree->object, "");
  40}
  41
  42static void add_cache_tree(struct cache_tree *it, struct rev_info *revs)
  43{
  44        int i;
  45
  46        if (it->entry_count >= 0)
  47                add_one_tree(it->sha1, revs);
  48        for (i = 0; i < it->subtree_nr; i++)
  49                add_cache_tree(it->down[i]->cache_tree, revs);
  50}
  51
  52static void add_cache_refs(struct rev_info *revs)
  53{
  54        int i;
  55
  56        read_cache();
  57        for (i = 0; i < active_nr; i++) {
  58                struct blob *blob;
  59
  60                /*
  61                 * The index can contain blobs and GITLINKs, GITLINKs are hashes
  62                 * that don't actually point to objects in the repository, it's
  63                 * almost guaranteed that they are NOT blobs, so we don't call
  64                 * lookup_blob() on them, to avoid populating the hash table
  65                 * with invalid information
  66                 */
  67                if (S_ISGITLINK(active_cache[i]->ce_mode))
  68                        continue;
  69
  70                blob = lookup_blob(active_cache[i]->sha1);
  71                if (blob)
  72                        blob->object.flags |= SEEN;
  73
  74                /*
  75                 * We could add the blobs to the pending list, but quite
  76                 * frankly, we don't care. Once we've looked them up, and
  77                 * added them as objects, we've really done everything
  78                 * there is to do for a blob
  79                 */
  80        }
  81        if (active_cache_tree)
  82                add_cache_tree(active_cache_tree, revs);
  83}
  84
  85/*
  86 * The traversal will have already marked us as SEEN, so we
  87 * only need to handle any progress reporting here.
  88 */
  89static void mark_object(struct object *obj, const struct name_path *path,
  90                        const char *name, void *data)
  91{
  92        update_progress(data);
  93}
  94
  95static void mark_commit(struct commit *c, void *data)
  96{
  97        mark_object(&c->object, NULL, NULL, data);
  98}
  99
 100void mark_reachable_objects(struct rev_info *revs, int mark_reflog,
 101                            struct progress *progress)
 102{
 103        struct connectivity_progress cp;
 104
 105        /*
 106         * Set up revision parsing, and mark us as being interested
 107         * in all object types, not just commits.
 108         */
 109        revs->tag_objects = 1;
 110        revs->blob_objects = 1;
 111        revs->tree_objects = 1;
 112
 113        /* Add all refs from the index file */
 114        add_cache_refs(revs);
 115
 116        /* Add all external refs */
 117        for_each_ref(add_one_ref, revs);
 118
 119        /* detached HEAD is not included in the list above */
 120        head_ref(add_one_ref, revs);
 121
 122        /* Add all reflog info */
 123        if (mark_reflog)
 124                add_reflogs_to_pending(revs, 0);
 125
 126        cp.progress = progress;
 127        cp.count = 0;
 128
 129        /*
 130         * Set up the revision walk - this will move all commits
 131         * from the pending list to the commit walking list.
 132         */
 133        if (prepare_revision_walk(revs))
 134                die("revision walk setup failed");
 135        traverse_commit_list(revs, mark_commit, mark_object, &cp);
 136        display_progress(cp.progress, cp.count);
 137}