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authorPřemysl Eric Janouch <p@janouch.name>2021-11-12 12:20:39 +0100
committerPřemysl Eric Janouch <p@janouch.name>2021-11-12 12:22:36 +0100
commit3299cbf8254a8bc5a39f48836d8d4dc1b3eaab87 (patch)
treef96fd4e3840a9f738f6607ab29653e0cbba55910
parent972bd80fa5a3964c59f1bc9fb2938ee6a662c76f (diff)
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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.
-rw-r--r--fastiv-browser.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/fastiv-browser.c b/fastiv-browser.c
index e4ffa4e..385096f 100644
--- a/fastiv-browser.c
+++ b/fastiv-browser.c
@@ -561,6 +561,14 @@ rescale_thumbnail(cairo_surface_t *thumbnail)
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
fastiv_browser_load(FastivBrowser *self, const char *path)
{
@@ -577,15 +585,17 @@ fastiv_browser_load(FastivBrowser *self, const char *path)
continue;
gchar *subpath = g_build_filename(path, filename, NULL);
- g_array_append_val(self->entries,
- ((Entry){
- .thumbnail =
- rescale_thumbnail(fastiv_io_lookup_thumbnail(subpath)),
- .filename = subpath,
- }));
+ g_array_append_val(
+ self->entries, ((Entry) {.thumbnail = NULL, .filename = subpath}));
}
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.
gtk_widget_queue_resize(GTK_WIDGET(self));
}