mirror of
https://github.com/git/git.git
synced 2024-11-16 14:04:52 +01:00
788cef81d4
An experiment to use two files (the base file and incremental changes relative to it) to represent the index to reduce I/O cost of rewriting a large index when only small part of the working tree changes. * nd/split-index: (32 commits) t1700: new tests for split-index mode t2104: make sure split index mode is off for the version test read-cache: force split index mode with GIT_TEST_SPLIT_INDEX read-tree: note about dropping split-index mode or index version read-tree: force split-index mode off on --index-output rev-parse: add --shared-index-path to get shared index path update-index --split-index: do not split if $GIT_DIR is read only update-index: new options to enable/disable split index mode split-index: strip pathname of on-disk replaced entries split-index: do not invalidate cache-tree at read time split-index: the reading part split-index: the writing part read-cache: mark updated entries for split index read-cache: save deleted entries in split index read-cache: mark new entries for split index read-cache: split-index mode read-cache: save index SHA-1 after reading entry.c: update cache_changed if refresh_cache is set in checkout_entry() cache-tree: mark istate->cache_changed on prime_cache_tree() cache-tree: mark istate->cache_changed on cache tree update ...
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
#include "cache.h"
|
|
#include "commit.h"
|
|
#include "run-command.h"
|
|
#include "resolve-undo.h"
|
|
#include "tree-walk.h"
|
|
#include "unpack-trees.h"
|
|
#include "dir.h"
|
|
|
|
static const char *merge_argument(struct commit *commit)
|
|
{
|
|
if (commit)
|
|
return sha1_to_hex(commit->object.sha1);
|
|
else
|
|
return EMPTY_TREE_SHA1_HEX;
|
|
}
|
|
|
|
int try_merge_command(const char *strategy, size_t xopts_nr,
|
|
const char **xopts, struct commit_list *common,
|
|
const char *head_arg, struct commit_list *remotes)
|
|
{
|
|
struct argv_array args = ARGV_ARRAY_INIT;
|
|
int i, ret;
|
|
struct commit_list *j;
|
|
|
|
argv_array_pushf(&args, "merge-%s", strategy);
|
|
for (i = 0; i < xopts_nr; i++)
|
|
argv_array_pushf(&args, "--%s", xopts[i]);
|
|
for (j = common; j; j = j->next)
|
|
argv_array_push(&args, merge_argument(j->item));
|
|
argv_array_push(&args, "--");
|
|
argv_array_push(&args, head_arg);
|
|
for (j = remotes; j; j = j->next)
|
|
argv_array_push(&args, merge_argument(j->item));
|
|
|
|
ret = run_command_v_opt(args.argv, RUN_GIT_CMD);
|
|
argv_array_clear(&args);
|
|
|
|
discard_cache();
|
|
if (read_cache() < 0)
|
|
die(_("failed to read the cache"));
|
|
resolve_undo_clear();
|
|
|
|
return ret;
|
|
}
|
|
|
|
int checkout_fast_forward(const unsigned char *head,
|
|
const unsigned char *remote,
|
|
int overwrite_ignore)
|
|
{
|
|
struct tree *trees[MAX_UNPACK_TREES];
|
|
struct unpack_trees_options opts;
|
|
struct tree_desc t[MAX_UNPACK_TREES];
|
|
int i, nr_trees = 0;
|
|
struct dir_struct dir;
|
|
struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
|
|
|
|
refresh_cache(REFRESH_QUIET);
|
|
|
|
hold_locked_index(lock_file, 1);
|
|
|
|
memset(&trees, 0, sizeof(trees));
|
|
memset(&opts, 0, sizeof(opts));
|
|
memset(&t, 0, sizeof(t));
|
|
if (overwrite_ignore) {
|
|
memset(&dir, 0, sizeof(dir));
|
|
dir.flags |= DIR_SHOW_IGNORED;
|
|
setup_standard_excludes(&dir);
|
|
opts.dir = &dir;
|
|
}
|
|
|
|
opts.head_idx = 1;
|
|
opts.src_index = &the_index;
|
|
opts.dst_index = &the_index;
|
|
opts.update = 1;
|
|
opts.verbose_update = 1;
|
|
opts.merge = 1;
|
|
opts.fn = twoway_merge;
|
|
setup_unpack_trees_porcelain(&opts, "merge");
|
|
|
|
trees[nr_trees] = parse_tree_indirect(head);
|
|
if (!trees[nr_trees++])
|
|
return -1;
|
|
trees[nr_trees] = parse_tree_indirect(remote);
|
|
if (!trees[nr_trees++])
|
|
return -1;
|
|
for (i = 0; i < nr_trees; i++) {
|
|
parse_tree(trees[i]);
|
|
init_tree_desc(t+i, trees[i]->buffer, trees[i]->size);
|
|
}
|
|
if (unpack_trees(nr_trees, t, &opts))
|
|
return -1;
|
|
if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
|
|
die(_("unable to write new index file"));
|
|
return 0;
|
|
}
|