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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"
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#include "commit.h"
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#include "run-command.h"
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#include "resolve-undo.h"
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#include "tree-walk.h"
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#include "unpack-trees.h"
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#include "dir.h"
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static const char *merge_argument(struct commit *commit)
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{
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if (commit)
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return sha1_to_hex(commit->object.sha1);
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else
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return EMPTY_TREE_SHA1_HEX;
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}
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int try_merge_command(const char *strategy, size_t xopts_nr,
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const char **xopts, struct commit_list *common,
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const char *head_arg, struct commit_list *remotes)
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{
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struct argv_array args = ARGV_ARRAY_INIT;
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int i, ret;
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struct commit_list *j;
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argv_array_pushf(&args, "merge-%s", strategy);
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for (i = 0; i < xopts_nr; i++)
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argv_array_pushf(&args, "--%s", xopts[i]);
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for (j = common; j; j = j->next)
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argv_array_push(&args, merge_argument(j->item));
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argv_array_push(&args, "--");
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argv_array_push(&args, head_arg);
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for (j = remotes; j; j = j->next)
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argv_array_push(&args, merge_argument(j->item));
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ret = run_command_v_opt(args.argv, RUN_GIT_CMD);
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argv_array_clear(&args);
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discard_cache();
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if (read_cache() < 0)
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die(_("failed to read the cache"));
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resolve_undo_clear();
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return ret;
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}
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int checkout_fast_forward(const unsigned char *head,
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const unsigned char *remote,
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int overwrite_ignore)
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{
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struct tree *trees[MAX_UNPACK_TREES];
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struct unpack_trees_options opts;
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struct tree_desc t[MAX_UNPACK_TREES];
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int i, nr_trees = 0;
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struct dir_struct dir;
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struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
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refresh_cache(REFRESH_QUIET);
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hold_locked_index(lock_file, 1);
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memset(&trees, 0, sizeof(trees));
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memset(&opts, 0, sizeof(opts));
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memset(&t, 0, sizeof(t));
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if (overwrite_ignore) {
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memset(&dir, 0, sizeof(dir));
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dir.flags |= DIR_SHOW_IGNORED;
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setup_standard_excludes(&dir);
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opts.dir = &dir;
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}
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opts.head_idx = 1;
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opts.src_index = &the_index;
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opts.dst_index = &the_index;
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opts.update = 1;
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opts.verbose_update = 1;
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opts.merge = 1;
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opts.fn = twoway_merge;
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setup_unpack_trees_porcelain(&opts, "merge");
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trees[nr_trees] = parse_tree_indirect(head);
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if (!trees[nr_trees++])
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return -1;
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trees[nr_trees] = parse_tree_indirect(remote);
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if (!trees[nr_trees++])
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return -1;
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for (i = 0; i < nr_trees; i++) {
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parse_tree(trees[i]);
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init_tree_desc(t+i, trees[i]->buffer, trees[i]->size);
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}
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if (unpack_trees(nr_trees, t, &opts))
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return -1;
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if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
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die(_("unable to write new index file"));
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return 0;
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}
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