[gnome-builder] code-index: try harder to drop caches after indexing

[Christian Hergert <chergert src gnome org>]

commit bd04f32473e2a5dbc7a98830bed0812e51c27b72
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jan 3 18:20:18 2018 -0800

    code-index: try harder to drop caches after indexing
    
    This can hold onto IdeFile instances forever unless we drop the cache
    after our work is done.

 src/plugins/code-index/ide-code-index-builder.c |   14 ++++++++++++++
 src/plugins/code-index/ide-code-index-builder.h |    1 +
 src/plugins/code-index/ide-code-index-service.c |    6 +++++-
 3 files changed, 20 insertions(+), 1 deletions(-)
---
diff --git a/src/plugins/code-index/ide-code-index-builder.c b/src/plugins/code-index/ide-code-index-builder.c
index 9bba732..437a722 100644
--- a/src/plugins/code-index/ide-code-index-builder.c
+++ b/src/plugins/code-index/ide-code-index-builder.c
@@ -861,3 +861,17 @@ ide_code_index_builder_new (IdeContext          *context,
                        "service", service,
                        NULL);
 }
+
+void
+ide_code_index_builder_drop_caches (IdeCodeIndexBuilder *self)
+{
+  g_return_if_fail (IDE_IS_CODE_INDEX_BUILDER (self));
+
+  /*
+   * Drop our caches so that we force the data to be regenereted
+   * upon the next request. Also helps keep IdeFile from lingering
+   * around forever.
+   */
+
+  g_hash_table_remove_all (self->build_flags);
+}
diff --git a/src/plugins/code-index/ide-code-index-builder.h b/src/plugins/code-index/ide-code-index-builder.h
index 761cc84..667d9d4 100644
--- a/src/plugins/code-index/ide-code-index-builder.h
+++ b/src/plugins/code-index/ide-code-index-builder.h
@@ -29,6 +29,7 @@ G_BEGIN_DECLS
 
 G_DECLARE_FINAL_TYPE (IdeCodeIndexBuilder, ide_code_index_builder, IDE, CODE_INDEX_BUILDER, IdeObject)
 
+void                    ide_code_index_builder_drop_caches     (IdeCodeIndexBuilder     *self);
 void                    ide_code_index_builder_build_async     (IdeCodeIndexBuilder     *self,
                                                                 GFile                   *directory,
                                                                 gboolean                 recursive,
diff --git a/src/plugins/code-index/ide-code-index-service.c b/src/plugins/code-index/ide-code-index-service.c
index 85f0830..c056a2c 100644
--- a/src/plugins/code-index/ide-code-index-service.c
+++ b/src/plugins/code-index/ide-code-index-service.c
@@ -124,6 +124,7 @@ ide_code_index_service_build_cb (GObject      *object,
   g_autoptr(GError) error = NULL;
 
   g_assert (IDE_IS_CODE_INDEX_SERVICE (self));
+  g_assert (G_IS_ASYNC_RESULT (result));
   g_assert (IDE_IS_CODE_INDEX_BUILDER (builder));
 
   bdata = g_queue_pop_head (&self->build_queue);
@@ -175,7 +176,10 @@ ide_code_index_service_build_cb (GObject      *object,
                                           g_steal_pointer (&self));
     }
   else
-    unregister_pausable (self);
+    {
+      unregister_pausable (self);
+      ide_code_index_builder_drop_caches (builder);
+    }
 }
 
 static gboolean