Welcome to mirror list, hosted at ThFree Co, Russian Federation.

git.blender.org/blender.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat (limited to 'source/blender/editors/space_file/filelist.c')
-rw-r--r--source/blender/editors/space_file/filelist.c364
1 files changed, 245 insertions, 119 deletions
diff --git a/source/blender/editors/space_file/filelist.c b/source/blender/editors/space_file/filelist.c
index 51a5c451f6d..d4e9118960a 100644
--- a/source/blender/editors/space_file/filelist.c
+++ b/source/blender/editors/space_file/filelist.c
@@ -89,6 +89,7 @@
#include "atomic_ops.h"
+#include "file_indexer.h"
#include "file_intern.h"
#include "filelist.h"
@@ -352,9 +353,6 @@ typedef struct FileListEntryPreview {
char path[FILE_MAX];
uint flags;
int index;
- /* Some file types load the memory from runtime data, not from disk. We just wait until it's done
- * generating (BKE_previewimg_is_finished()). */
- PreviewImage *in_memory_preview;
int icon_id;
} FileListEntryPreview;
@@ -399,6 +397,11 @@ typedef struct FileList {
FileListFilter filter_data;
+ /**
+ * File indexer to use. Attribute is always set.
+ */
+ const struct FileIndexerType *indexer;
+
struct FileListIntern filelist_intern;
struct FileListEntryCache filelist_cache;
@@ -1129,6 +1132,19 @@ void filelist_setfilter_options(FileList *filelist,
}
/**
+ * Set the indexer to be used by the filelist.
+ *
+ * The given indexer allocation should be handled by the caller or defined statically.
+ */
+void filelist_setindexer(FileList *filelist, const FileIndexerType *indexer)
+{
+ BLI_assert(filelist);
+ BLI_assert(indexer);
+
+ filelist->indexer = indexer;
+}
+
+/**
* \param catalog_id: The catalog that should be filtered by if \a catalog_visibility is
* #FILE_SHOW_ASSETS_FROM_CATALOG. May be NULL otherwise.
*/
@@ -1577,74 +1593,46 @@ static void filelist_cache_preview_runf(TaskPool *__restrict pool, void *taskdat
FileListEntryPreview *preview = preview_taskdata->preview;
ThumbSource source = 0;
- bool done = false;
// printf("%s: Start (%d)...\n", __func__, threadid);
- if (preview->in_memory_preview) {
- if (BKE_previewimg_is_finished(preview->in_memory_preview, ICON_SIZE_PREVIEW)) {
- ImBuf *imbuf = BKE_previewimg_to_imbuf(preview->in_memory_preview, ICON_SIZE_PREVIEW);
- if (imbuf) {
- preview->icon_id = BKE_icon_imbuf_create(imbuf);
- }
- done = true;
- }
- }
- else {
- // printf("%s: %d - %s - %p\n", __func__, preview->index, preview->path, preview->img);
- BLI_assert(preview->flags &
- (FILE_TYPE_IMAGE | FILE_TYPE_MOVIE | FILE_TYPE_FTFONT | FILE_TYPE_BLENDER |
- FILE_TYPE_BLENDER_BACKUP | FILE_TYPE_BLENDERLIB));
+ // printf("%s: %d - %s - %p\n", __func__, preview->index, preview->path, preview->img);
+ BLI_assert(preview->flags &
+ (FILE_TYPE_IMAGE | FILE_TYPE_MOVIE | FILE_TYPE_FTFONT | FILE_TYPE_BLENDER |
+ FILE_TYPE_BLENDER_BACKUP | FILE_TYPE_BLENDERLIB));
- if (preview->flags & FILE_TYPE_IMAGE) {
- source = THB_SOURCE_IMAGE;
- }
- else if (preview->flags &
- (FILE_TYPE_BLENDER | FILE_TYPE_BLENDER_BACKUP | FILE_TYPE_BLENDERLIB)) {
- source = THB_SOURCE_BLEND;
- }
- else if (preview->flags & FILE_TYPE_MOVIE) {
- source = THB_SOURCE_MOVIE;
- }
- else if (preview->flags & FILE_TYPE_FTFONT) {
- source = THB_SOURCE_FONT;
- }
-
- IMB_thumb_path_lock(preview->path);
- /* Always generate biggest preview size for now, it's simpler and avoids having to re-generate
- * in case user switch to a bigger preview size. */
- ImBuf *imbuf = IMB_thumb_manage(preview->path, THB_LARGE, source);
- IMB_thumb_path_unlock(preview->path);
- if (imbuf) {
- preview->icon_id = BKE_icon_imbuf_create(imbuf);
- }
-
- done = true;
+ if (preview->flags & FILE_TYPE_IMAGE) {
+ source = THB_SOURCE_IMAGE;
+ }
+ else if (preview->flags &
+ (FILE_TYPE_BLENDER | FILE_TYPE_BLENDER_BACKUP | FILE_TYPE_BLENDERLIB)) {
+ source = THB_SOURCE_BLEND;
+ }
+ else if (preview->flags & FILE_TYPE_MOVIE) {
+ source = THB_SOURCE_MOVIE;
+ }
+ else if (preview->flags & FILE_TYPE_FTFONT) {
+ source = THB_SOURCE_FONT;
}
- if (done) {
- /* That way task freeing function won't free th preview, since it does not own it anymore. */
- atomic_cas_ptr((void **)&preview_taskdata->preview, preview, NULL);
- BLI_thread_queue_push(cache->previews_done, preview);
- atomic_fetch_and_sub_z(&cache->previews_todo_count, 1);
+ IMB_thumb_path_lock(preview->path);
+ /* Always generate biggest preview size for now, it's simpler and avoids having to re-generate
+ * in case user switch to a bigger preview size. */
+ ImBuf *imbuf = IMB_thumb_manage(preview->path, THB_LARGE, source);
+ IMB_thumb_path_unlock(preview->path);
+ if (imbuf) {
+ preview->icon_id = BKE_icon_imbuf_create(imbuf);
}
+ BLI_thread_queue_push(cache->previews_done, preview);
+ atomic_fetch_and_sub_z(&cache->previews_todo_count, 1);
+
// printf("%s: End (%d)...\n", __func__, threadid);
}
static void filelist_cache_preview_freef(TaskPool *__restrict UNUSED(pool), void *taskdata)
{
FileListEntryPreviewTaskData *preview_taskdata = taskdata;
- FileListEntryPreview *preview = preview_taskdata->preview;
-
- /* preview_taskdata->preview is atomically set to NULL once preview has been processed and sent
- * to previews_done queue. */
- if (preview != NULL) {
- if (preview->icon_id) {
- BKE_icon_delete(preview->icon_id);
- }
- MEM_freeN(preview);
- }
MEM_freeN(preview_taskdata);
}
@@ -1710,7 +1698,7 @@ static void filelist_cache_previews_push(FileList *filelist, FileDirEntry *entry
return;
}
- if (entry->flags & FILE_ENTRY_INVALID_PREVIEW) {
+ if (entry->flags & (FILE_ENTRY_INVALID_PREVIEW | FILE_ENTRY_PREVIEW_LOADING)) {
return;
}
@@ -1719,33 +1707,51 @@ static void filelist_cache_previews_push(FileList *filelist, FileDirEntry *entry
return;
}
- FileListEntryPreview *preview = MEM_mallocN(sizeof(*preview), __func__);
FileListInternEntry *intern_entry = filelist->filelist_intern.filtered[index];
-
- if (entry->redirection_path) {
- BLI_strncpy(preview->path, entry->redirection_path, FILE_MAXDIR);
- }
- else {
- BLI_join_dirfile(
- preview->path, sizeof(preview->path), filelist->filelist.root, entry->relpath);
+ PreviewImage *preview_in_memory = intern_entry->local_data.preview_image;
+ if (preview_in_memory && !BKE_previewimg_is_finished(preview_in_memory, ICON_SIZE_PREVIEW)) {
+ /* Nothing to set yet. Wait for next call. */
+ return;
}
+ filelist_cache_preview_ensure_running(cache);
+ entry->flags |= FILE_ENTRY_PREVIEW_LOADING;
+
+ FileListEntryPreview *preview = MEM_mallocN(sizeof(*preview), __func__);
preview->index = index;
preview->flags = entry->typeflag;
- preview->in_memory_preview = intern_entry->local_data.preview_image;
preview->icon_id = 0;
- // printf("%s: %d - %s\n", __func__, preview->index, preview->path);
- filelist_cache_preview_ensure_running(cache);
+ if (preview_in_memory) {
+ /* TODO(mano-wii): No need to use the thread API here. */
+ BLI_assert(BKE_previewimg_is_finished(preview_in_memory, ICON_SIZE_PREVIEW));
+ preview->path[0] = '\0';
+ ImBuf *imbuf = BKE_previewimg_to_imbuf(preview_in_memory, ICON_SIZE_PREVIEW);
+ if (imbuf) {
+ preview->icon_id = BKE_icon_imbuf_create(imbuf);
+ }
+ BLI_thread_queue_push(cache->previews_done, preview);
+ atomic_fetch_and_sub_z(&cache->previews_todo_count, 1);
+ }
+ else {
+ if (entry->redirection_path) {
+ BLI_strncpy(preview->path, entry->redirection_path, FILE_MAXDIR);
+ }
+ else {
+ BLI_join_dirfile(
+ preview->path, sizeof(preview->path), filelist->filelist.root, entry->relpath);
+ }
+ // printf("%s: %d - %s\n", __func__, preview->index, preview->path);
- FileListEntryPreviewTaskData *preview_taskdata = MEM_mallocN(sizeof(*preview_taskdata),
- __func__);
- preview_taskdata->preview = preview;
- BLI_task_pool_push(cache->previews_pool,
- filelist_cache_preview_runf,
- preview_taskdata,
- true,
- filelist_cache_preview_freef);
+ FileListEntryPreviewTaskData *preview_taskdata = MEM_mallocN(sizeof(*preview_taskdata),
+ __func__);
+ preview_taskdata->preview = preview;
+ BLI_task_pool_push(cache->previews_pool,
+ filelist_cache_preview_runf,
+ preview_taskdata,
+ true,
+ filelist_cache_preview_freef);
+ }
}
static void filelist_cache_init(FileListEntryCache *cache, size_t cache_size)
@@ -1843,6 +1849,8 @@ FileList *filelist_new(short type)
p->filelist.nbr_entries = FILEDIR_NBR_ENTRIES_UNSET;
filelist_settype(p, type);
+ p->indexer = &file_indexer_noop;
+
return p;
}
@@ -1896,6 +1904,7 @@ static void filelist_clear_asset_library(FileList *filelist)
{
/* The AssetLibraryService owns the AssetLibrary pointer, so no need for us to free it. */
filelist->asset_library = NULL;
+ file_delete_asset_catalog_filter_settings(&filelist->filter_data.asset_catalog_filter);
}
void filelist_clear_ex(struct FileList *filelist,
@@ -1995,7 +2004,6 @@ void filelist_free(struct FileList *filelist)
filelist->selection_state = NULL;
}
- file_delete_asset_catalog_filter_settings(&filelist->filter_data.asset_catalog_filter);
MEM_SAFE_FREE(filelist->asset_library_ref);
memset(&filelist->filter_data, 0, sizeof(filelist->filter_data));
@@ -2659,24 +2667,27 @@ bool filelist_cache_previews_update(FileList *filelist)
// printf("%s: %d - %s - %p\n", __func__, preview->index, preview->path, preview->img);
- if (preview->icon_id) {
- /* Due to asynchronous process, a preview for a given image may be generated several times,
- * i.e. entry->image may already be set at this point. */
- if (entry && !entry->preview_icon_id) {
+ if (entry) {
+ if (preview->icon_id) {
+ /* The FILE_ENTRY_PREVIEW_LOADING flag should have prevented any other asynchronous
+ * process from trying to generate the same preview icon. */
+ BLI_assert_msg(!entry->preview_icon_id, "Preview icon should not have been generated yet");
+
/* Move ownership over icon. */
entry->preview_icon_id = preview->icon_id;
preview->icon_id = 0;
changed = true;
}
else {
- BKE_icon_delete(preview->icon_id);
+ /* We want to avoid re-processing this entry continuously!
+ * Note that, since entries only live in cache,
+ * preview will be retried quite often anyway. */
+ entry->flags |= FILE_ENTRY_INVALID_PREVIEW;
}
+ entry->flags &= ~FILE_ENTRY_PREVIEW_LOADING;
}
- else if (entry) {
- /* We want to avoid re-processing this entry continuously!
- * Note that, since entries only live in cache,
- * preview will be retried quite often anyway. */
- entry->flags |= FILE_ENTRY_INVALID_PREVIEW;
+ else {
+ BKE_icon_delete(preview->icon_id);
}
MEM_freeN(preview);
@@ -3130,6 +3141,29 @@ static FileListInternEntry *filelist_readjob_list_lib_group_create(const int idc
return entry;
}
+static void filelist_readjob_list_lib_add_datablock(ListBase *entries,
+ const BLODataBlockInfo *datablock_info,
+ const bool prefix_relpath_with_group_name,
+ const int idcode,
+ const char *group_name)
+{
+ FileListInternEntry *entry = MEM_callocN(sizeof(*entry), __func__);
+ if (prefix_relpath_with_group_name) {
+ entry->relpath = BLI_sprintfN("%s/%s", group_name, datablock_info->name);
+ }
+ else {
+ entry->relpath = BLI_strdup(datablock_info->name);
+ }
+ entry->typeflag |= FILE_TYPE_BLENDERLIB;
+ if (datablock_info && datablock_info->asset_data) {
+ entry->typeflag |= FILE_TYPE_ASSET;
+ /* Moves ownership! */
+ entry->imported_asset_data = datablock_info->asset_data;
+ }
+ entry->blentype = idcode;
+ BLI_addtail(entries, entry);
+}
+
static void filelist_readjob_list_lib_add_datablocks(ListBase *entries,
LinkNode *datablock_infos,
const bool prefix_relpath_with_group_name,
@@ -3137,29 +3171,71 @@ static void filelist_readjob_list_lib_add_datablocks(ListBase *entries,
const char *group_name)
{
for (LinkNode *ln = datablock_infos; ln; ln = ln->next) {
- struct BLODataBlockInfo *info = ln->link;
- FileListInternEntry *entry = MEM_callocN(sizeof(*entry), __func__);
- if (prefix_relpath_with_group_name) {
- entry->relpath = BLI_sprintfN("%s/%s", group_name, info->name);
- }
- else {
- entry->relpath = BLI_strdup(info->name);
- }
- entry->typeflag |= FILE_TYPE_BLENDERLIB;
- if (info && info->asset_data) {
- entry->typeflag |= FILE_TYPE_ASSET;
- /* Moves ownership! */
- entry->imported_asset_data = info->asset_data;
- }
- entry->blentype = idcode;
+ struct BLODataBlockInfo *datablock_info = ln->link;
+ filelist_readjob_list_lib_add_datablock(
+ entries, datablock_info, prefix_relpath_with_group_name, idcode, group_name);
+ }
+}
+
+static void filelist_readjob_list_lib_add_from_indexer_entries(
+ ListBase *entries,
+ const FileIndexerEntries *indexer_entries,
+ const bool prefix_relpath_with_group_name)
+{
+ for (const LinkNode *ln = indexer_entries->entries; ln; ln = ln->next) {
+ const FileIndexerEntry *indexer_entry = (const FileIndexerEntry *)ln->link;
+ const char *group_name = BKE_idtype_idcode_to_name(indexer_entry->idcode);
+ filelist_readjob_list_lib_add_datablock(entries,
+ &indexer_entry->datablock_info,
+ prefix_relpath_with_group_name,
+ indexer_entry->idcode,
+ group_name);
+ }
+}
+
+static FileListInternEntry *filelist_readjob_list_lib_navigate_to_parent_entry_create(void)
+{
+ FileListInternEntry *entry = MEM_callocN(sizeof(*entry), __func__);
+ entry->relpath = BLI_strdup(FILENAME_PARENT);
+ entry->typeflag |= (FILE_TYPE_BLENDERLIB | FILE_TYPE_DIR);
+ return entry;
+}
+
+/**
+ * Structure to keep the file indexer and its user data together.
+ */
+typedef struct FileIndexer {
+ const FileIndexerType *callbacks;
+
+ /**
+ * User data. Contains the result of `callbacks.init_user_data`.
+ */
+ void *user_data;
+} FileIndexer;
+
+static int filelist_readjob_list_lib_populate_from_index(ListBase *entries,
+ const ListLibOptions options,
+ const int read_from_index,
+ const FileIndexerEntries *indexer_entries)
+{
+ int navigate_to_parent_len = 0;
+ if (options & LIST_LIB_ADD_PARENT) {
+ FileListInternEntry *entry = filelist_readjob_list_lib_navigate_to_parent_entry_create();
BLI_addtail(entries, entry);
+ navigate_to_parent_len = 1;
}
+
+ filelist_readjob_list_lib_add_from_indexer_entries(entries, indexer_entries, true);
+ return read_from_index + navigate_to_parent_len;
}
static int filelist_readjob_list_lib(const char *root,
ListBase *entries,
- const ListLibOptions options)
+ const ListLibOptions options,
+ FileIndexer *indexer_runtime)
{
+ BLI_assert(indexer_runtime);
+
char dir[FILE_MAX_LIBEXTRA], *group;
struct BlendHandle *libfiledata = NULL;
@@ -3167,13 +3243,37 @@ static int filelist_readjob_list_lib(const char *root,
/* Check if the given root is actually a library. All folders are passed to
* `filelist_readjob_list_lib` and based on the number of found entries `filelist_readjob_do`
* will do a dir listing only when this function does not return any entries. */
- /* TODO: We should consider introducing its own function to detect if it is a lib and
+ /* TODO(jbakker): We should consider introducing its own function to detect if it is a lib and
* call it directly from `filelist_readjob_do` to increase readability. */
const bool is_lib = BLO_library_path_explode(root, dir, &group, NULL);
if (!is_lib) {
return 0;
}
+ const bool group_came_from_path = group != NULL;
+
+ /* Try read from indexer_runtime. */
+ /* Indexing returns all entries in a blend file. We should ignore the index when listing a group
+ * inside a blend file, so the `entries` isn't filled with undesired entries.
+ * This happens when linking or appending data-blocks, where you can navigate into a group (fe
+ * Materials/Objects) where you only want to work with partial indexes.
+ *
+ * Adding support for partial reading/updating indexes would increase the complexity.
+ */
+ const bool use_indexer = !group_came_from_path;
+ FileIndexerEntries indexer_entries = {NULL};
+ if (use_indexer) {
+ int read_from_index = 0;
+ eFileIndexerResult indexer_result = indexer_runtime->callbacks->read_index(
+ dir, &indexer_entries, &read_from_index, indexer_runtime->user_data);
+ if (indexer_result == FILE_INDEXER_ENTRIES_LOADED) {
+ int entries_read = filelist_readjob_list_lib_populate_from_index(
+ entries, options, read_from_index, &indexer_entries);
+ ED_file_indexer_entries_clear(&indexer_entries);
+ return entries_read;
+ }
+ }
+
/* Open the library file. */
BlendFileReadReport bf_reports = {.reports = NULL};
libfiledata = BLO_blendhandle_from_file(dir, &bf_reports);
@@ -3182,18 +3282,18 @@ static int filelist_readjob_list_lib(const char *root,
}
/* Add current parent when requested. */
- int parent_len = 0;
+ /* Is the navigate to previous level added to the list of entries. When added the return value
+ * should be increased to match the actual number of entries added. It is introduced to keep
+ * the code clean and readable and not counting in a single variable. */
+ int navigate_to_parent_len = 0;
if (options & LIST_LIB_ADD_PARENT) {
- FileListInternEntry *entry = MEM_callocN(sizeof(*entry), __func__);
- entry->relpath = BLI_strdup(FILENAME_PARENT);
- entry->typeflag |= (FILE_TYPE_BLENDERLIB | FILE_TYPE_DIR);
+ FileListInternEntry *entry = filelist_readjob_list_lib_navigate_to_parent_entry_create();
BLI_addtail(entries, entry);
- parent_len = 1;
+ navigate_to_parent_len = 1;
}
int group_len = 0;
int datablock_len = 0;
- const bool group_came_from_path = group != NULL;
if (group_came_from_path) {
const int idcode = groupname_to_code(group);
LinkNode *datablock_infos = BLO_blendhandle_get_datablock_info(
@@ -3218,6 +3318,10 @@ static int filelist_readjob_list_lib(const char *root,
libfiledata, idcode, options & LIST_LIB_ASSETS_ONLY, &group_datablock_len);
filelist_readjob_list_lib_add_datablocks(
entries, group_datablock_infos, true, idcode, group_name);
+ if (use_indexer) {
+ ED_file_indexer_entries_extend_from_datablock_infos(
+ &indexer_entries, group_datablock_infos, idcode);
+ }
BLI_linklist_freeN(group_datablock_infos);
datablock_len += group_datablock_len;
}
@@ -3228,8 +3332,14 @@ static int filelist_readjob_list_lib(const char *root,
BLO_blendhandle_close(libfiledata);
+ /* Update the index. */
+ if (use_indexer) {
+ indexer_runtime->callbacks->update_index(dir, &indexer_entries, indexer_runtime->user_data);
+ ED_file_indexer_entries_clear(&indexer_entries);
+ }
+
/* Return the number of items added to entries. */
- int added_entries_len = group_len + datablock_len + parent_len;
+ int added_entries_len = group_len + datablock_len + navigate_to_parent_len;
return added_entries_len;
}
@@ -3421,11 +3531,11 @@ typedef struct FileListReadJob {
* The job system calls #filelist_readjob_update which moves any read file from #tmp_filelist
* into #filelist in a thread-safe way.
*
- * #tmp_filelist also keeps an `AssetLibrary *` so that it can be loaded in the same thread, and
- * moved to #filelist once all categories are loaded.
+ * #tmp_filelist also keeps an `AssetLibrary *` so that it can be loaded in the same thread,
+ * and moved to #filelist once all categories are loaded.
*
- * NOTE: #tmp_filelist is freed in #filelist_readjob_free, so any copied pointers need to be set
- * to NULL to avoid double-freeing them. */
+ * NOTE: #tmp_filelist is freed in #filelist_readjob_free, so any copied pointers need to be
+ * set to NULL to avoid double-freeing them. */
struct FileList *tmp_filelist;
} FileListReadJob;
@@ -3462,8 +3572,8 @@ static bool filelist_readjob_should_recurse_into_entry(const int max_recursion,
/* No more levels of recursion left. */
return false;
}
- /* Show entries when recursion is set to `Blend file` even when `current_recursion_level` exceeds
- * `max_recursion`. */
+ /* Show entries when recursion is set to `Blend file` even when `current_recursion_level`
+ * exceeds `max_recursion`. */
if (!is_lib && (current_recursion_level >= max_recursion) &&
((entry->typeflag & (FILE_TYPE_BLENDER | FILE_TYPE_BLENDER_BACKUP)) == 0)) {
return false;
@@ -3511,6 +3621,12 @@ static void filelist_readjob_recursive_dir_add_items(const bool do_lib,
BLI_path_normalize_dir(job_params->main_name, dir);
td_dir->dir = BLI_strdup(dir);
+ /* Init the file indexer. */
+ FileIndexer indexer_runtime = {.callbacks = filelist->indexer};
+ if (indexer_runtime.callbacks->init_user_data) {
+ indexer_runtime.user_data = indexer_runtime.callbacks->init_user_data(dir, sizeof(dir));
+ }
+
while (!BLI_stack_is_empty(todo_dirs) && !(*stop)) {
FileListInternEntry *entry;
int nbr_entries = 0;
@@ -3553,7 +3669,8 @@ static void filelist_readjob_recursive_dir_add_items(const bool do_lib,
if (filelist->asset_library_ref) {
list_lib_options |= LIST_LIB_ASSETS_ONLY;
}
- nbr_entries = filelist_readjob_list_lib(subdir, &entries, list_lib_options);
+ nbr_entries = filelist_readjob_list_lib(
+ subdir, &entries, list_lib_options, &indexer_runtime);
if (nbr_entries > 0) {
is_lib = true;
}
@@ -3595,6 +3712,15 @@ static void filelist_readjob_recursive_dir_add_items(const bool do_lib,
MEM_freeN(subdir);
}
+ /* Finalize and free indexer. */
+ if (indexer_runtime.callbacks->filelist_finished && BLI_stack_is_empty(todo_dirs)) {
+ indexer_runtime.callbacks->filelist_finished(indexer_runtime.user_data);
+ }
+ if (indexer_runtime.callbacks->free_user_data && indexer_runtime.user_data) {
+ indexer_runtime.callbacks->free_user_data(indexer_runtime.user_data);
+ indexer_runtime.user_data = NULL;
+ }
+
/* If we were interrupted by stop, stack may not be empty and we need to free
* pending dir paths. */
while (!BLI_stack_is_empty(todo_dirs)) {