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68fcd48baf
Add (disabled by default) option to skip the 'cache_tree_update()' at the end of 'unpack_trees()'. In many cases, this cache tree update is redundant because the caller of 'unpack_trees()' immediately follows it with 'prime_cache_tree()', rebuilding the entire cache tree from scratch. While these operations aren't the most expensive part of operations like 'git reset', the duplicate calls still create a minor unnecessary slowdown. Introduce an option for callers to skip the 'cache_tree_update()' in 'unpack_trees()' if it is redundant (that is, if 'prime_cache_tree()' is called afterwards). At the moment, no 'unpack_trees()' callers use the new option; they will be updated in subsequent patches. Signed-off-by: Victoria Dye <vdye@github.com> Signed-off-by: Taylor Blau <me@ttaylorr.com>
131 lines
3.4 KiB
C
131 lines
3.4 KiB
C
#ifndef UNPACK_TREES_H
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#define UNPACK_TREES_H
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#include "cache.h"
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#include "strvec.h"
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#include "string-list.h"
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#include "tree-walk.h"
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#define MAX_UNPACK_TREES MAX_TRAVERSE_TREES
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struct cache_entry;
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struct unpack_trees_options;
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struct pattern_list;
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typedef int (*merge_fn_t)(const struct cache_entry * const *src,
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struct unpack_trees_options *options);
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enum unpack_trees_error_types {
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ERROR_WOULD_OVERWRITE = 0,
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ERROR_NOT_UPTODATE_FILE,
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ERROR_NOT_UPTODATE_DIR,
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ERROR_CWD_IN_THE_WAY,
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ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN,
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ERROR_WOULD_LOSE_UNTRACKED_REMOVED,
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ERROR_BIND_OVERLAP,
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ERROR_WOULD_LOSE_SUBMODULE,
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NB_UNPACK_TREES_ERROR_TYPES,
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WARNING_SPARSE_NOT_UPTODATE_FILE,
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WARNING_SPARSE_UNMERGED_FILE,
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WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN,
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NB_UNPACK_TREES_WARNING_TYPES,
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};
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/*
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* Sets the list of user-friendly error messages to be used by the
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* command "cmd" (either merge or checkout), and show_all_errors to 1.
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*/
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void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
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const char *cmd);
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/*
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* Frees resources allocated by setup_unpack_trees_porcelain().
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*/
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void clear_unpack_trees_porcelain(struct unpack_trees_options *opts);
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enum unpack_trees_reset_type {
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UNPACK_RESET_NONE = 0, /* traditional "false" value; still valid */
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UNPACK_RESET_INVALID = 1, /* "true" no longer valid; use below values */
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UNPACK_RESET_PROTECT_UNTRACKED,
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UNPACK_RESET_OVERWRITE_UNTRACKED
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};
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struct unpack_trees_options {
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unsigned int merge,
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update,
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preserve_ignored,
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clone,
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index_only,
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nontrivial_merge,
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trivial_merges_only,
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verbose_update,
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aggressive,
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skip_unmerged,
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initial_checkout,
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diff_index_cached,
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debug_unpack,
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skip_sparse_checkout,
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quiet,
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exiting_early,
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show_all_errors,
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dry_run,
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skip_cache_tree_update;
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enum unpack_trees_reset_type reset;
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const char *prefix;
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int cache_bottom;
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struct pathspec *pathspec;
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merge_fn_t fn;
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const char *msgs[NB_UNPACK_TREES_WARNING_TYPES];
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struct strvec msgs_to_free;
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/*
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* Store error messages in an array, each case
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* corresponding to a error message type
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*/
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struct string_list unpack_rejects[NB_UNPACK_TREES_WARNING_TYPES];
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int head_idx;
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int merge_size;
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struct cache_entry *df_conflict_entry;
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void *unpack_data;
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struct index_state *dst_index;
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struct index_state *src_index;
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struct index_state result;
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struct pattern_list *pl; /* for internal use */
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struct dir_struct *dir; /* for internal use only */
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struct checkout_metadata meta;
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};
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int unpack_trees(unsigned n, struct tree_desc *t,
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struct unpack_trees_options *options);
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enum update_sparsity_result {
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UPDATE_SPARSITY_SUCCESS = 0,
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UPDATE_SPARSITY_WARNINGS = 1,
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UPDATE_SPARSITY_INDEX_UPDATE_FAILURES = -1,
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UPDATE_SPARSITY_WORKTREE_UPDATE_FAILURES = -2
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};
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enum update_sparsity_result update_sparsity(struct unpack_trees_options *options);
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int verify_uptodate(const struct cache_entry *ce,
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struct unpack_trees_options *o);
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int threeway_merge(const struct cache_entry * const *stages,
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struct unpack_trees_options *o);
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int twoway_merge(const struct cache_entry * const *src,
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struct unpack_trees_options *o);
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int bind_merge(const struct cache_entry * const *src,
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struct unpack_trees_options *o);
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int oneway_merge(const struct cache_entry * const *src,
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struct unpack_trees_options *o);
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int stash_worktree_untracked_merge(const struct cache_entry * const *src,
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struct unpack_trees_options *o);
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#endif
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