diff options
Diffstat (limited to 'third_party/git/preload-index.c')
| -rw-r--r-- | third_party/git/preload-index.c | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/third_party/git/preload-index.c b/third_party/git/preload-index.c deleted file mode 100644 index ed6eaa47388a..000000000000 --- a/third_party/git/preload-index.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * Copyright (C) 2008 Linus Torvalds - */ -#include "cache.h" -#include "pathspec.h" -#include "dir.h" -#include "fsmonitor.h" -#include "config.h" -#include "progress.h" -#include "thread-utils.h" -#include "repository.h" - -/* - * Mostly randomly chosen maximum thread counts: we - * cap the parallelism to 20 threads, and we want - * to have at least 500 lstat's per thread for it to - * be worth starting a thread. - */ -#define MAX_PARALLEL (20) -#define THREAD_COST (500) - -struct progress_data { - unsigned long n; - struct progress *progress; - pthread_mutex_t mutex; -}; - -struct thread_data { - pthread_t pthread; - struct index_state *index; - struct pathspec pathspec; - struct progress_data *progress; - int offset, nr; -}; - -static void *preload_thread(void *_data) -{ - int nr, last_nr; - struct thread_data *p = _data; - struct index_state *index = p->index; - struct cache_entry **cep = index->cache + p->offset; - struct cache_def cache = CACHE_DEF_INIT; - - nr = p->nr; - if (nr + p->offset > index->cache_nr) - nr = index->cache_nr - p->offset; - last_nr = nr; - - do { - struct cache_entry *ce = *cep++; - struct stat st; - - if (ce_stage(ce)) - continue; - if (S_ISGITLINK(ce->ce_mode)) - continue; - if (ce_uptodate(ce)) - continue; - if (ce_skip_worktree(ce)) - continue; - if (ce->ce_flags & CE_FSMONITOR_VALID) - continue; - if (p->progress && !(nr & 31)) { - struct progress_data *pd = p->progress; - - pthread_mutex_lock(&pd->mutex); - pd->n += last_nr - nr; - display_progress(pd->progress, pd->n); - pthread_mutex_unlock(&pd->mutex); - last_nr = nr; - } - if (!ce_path_match(index, ce, &p->pathspec, NULL)) - continue; - if (threaded_has_symlink_leading_path(&cache, ce->name, ce_namelen(ce))) - continue; - if (lstat(ce->name, &st)) - continue; - if (ie_match_stat(index, ce, &st, CE_MATCH_RACY_IS_DIRTY|CE_MATCH_IGNORE_FSMONITOR)) - continue; - ce_mark_uptodate(ce); - mark_fsmonitor_valid(index, ce); - } while (--nr > 0); - if (p->progress) { - struct progress_data *pd = p->progress; - - pthread_mutex_lock(&pd->mutex); - display_progress(pd->progress, pd->n + last_nr); - pthread_mutex_unlock(&pd->mutex); - } - cache_def_clear(&cache); - return NULL; -} - -void preload_index(struct index_state *index, - const struct pathspec *pathspec, - unsigned int refresh_flags) -{ - int threads, i, work, offset; - struct thread_data data[MAX_PARALLEL]; - struct progress_data pd; - - if (!HAVE_THREADS || !core_preload_index) - return; - - threads = index->cache_nr / THREAD_COST; - if ((index->cache_nr > 1) && (threads < 2) && git_env_bool("GIT_TEST_PRELOAD_INDEX", 0)) - threads = 2; - if (threads < 2) - return; - trace_performance_enter(); - if (threads > MAX_PARALLEL) - threads = MAX_PARALLEL; - offset = 0; - work = DIV_ROUND_UP(index->cache_nr, threads); - memset(&data, 0, sizeof(data)); - - memset(&pd, 0, sizeof(pd)); - if (refresh_flags & REFRESH_PROGRESS && isatty(2)) { - pd.progress = start_delayed_progress(_("Refreshing index"), index->cache_nr); - pthread_mutex_init(&pd.mutex, NULL); - } - - for (i = 0; i < threads; i++) { - struct thread_data *p = data+i; - int err; - - p->index = index; - if (pathspec) - copy_pathspec(&p->pathspec, pathspec); - p->offset = offset; - p->nr = work; - if (pd.progress) - p->progress = &pd; - offset += work; - err = pthread_create(&p->pthread, NULL, preload_thread, p); - - if (err) - die(_("unable to create threaded lstat: %s"), strerror(err)); - } - for (i = 0; i < threads; i++) { - struct thread_data *p = data+i; - if (pthread_join(p->pthread, NULL)) - die("unable to join threaded lstat"); - } - stop_progress(&pd.progress); - - trace_performance_leave("preload index"); -} - -int repo_read_index_preload(struct repository *repo, - const struct pathspec *pathspec, - unsigned int refresh_flags) -{ - int retval = repo_read_index(repo); - - preload_index(repo->index, pathspec, refresh_flags); - return retval; -} |