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Parallelize thumbnail loading 

GLib makes this easy.

They should all be local, and fast to access, so the CPU is the limit.
This commit is contained in:
Přemysl Eric Janouch 2021-11-12 12:20:39 +01:00
parent 972bd80fa5
commit 3299cbf825
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 16 additions and 6 deletions
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22
fastiv-browser.c
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@ -561,6 +561,14 @@ rescale_thumbnail(cairo_surface_t *thumbnail)
return scaled; return scaled;
} }
static void
entry_add_thumbnail(gpointer data, G_GNUC_UNUSED gpointer user_data)
{
Entry *self = data;
self->thumbnail =
rescale_thumbnail(fastiv_io_lookup_thumbnail(self->filename));
}
void void
fastiv_browser_load(FastivBrowser *self, const char *path) fastiv_browser_load(FastivBrowser *self, const char *path)
{ {
@ -577,15 +585,17 @@ fastiv_browser_load(FastivBrowser *self, const char *path)
continue; continue;
gchar *subpath = g_build_filename(path, filename, NULL); gchar *subpath = g_build_filename(path, filename, NULL);
g_array_append_val(self->entries, g_array_append_val(
((Entry){ self->entries, ((Entry) {.thumbnail = NULL, .filename = subpath}));
.thumbnail =
rescale_thumbnail(fastiv_io_lookup_thumbnail(subpath)),
.filename = subpath,
}));
} }
g_dir_close(dir); g_dir_close(dir);
GThreadPool *pool = g_thread_pool_new(
entry_add_thumbnail, NULL, g_get_num_processors(), FALSE, NULL);
for (guint i = 0; i < self->entries->len; i++)
g_thread_pool_push(pool, &g_array_index(self->entries, Entry, i), NULL);
g_thread_pool_free(pool, FALSE, TRUE);
// TODO(p): Sort the entries. // TODO(p): Sort the entries.
gtk_widget_queue_resize(GTK_WIDGET(self)); gtk_widget_queue_resize(GTK_WIDGET(self));
} }