[PATCH] Add a method to reparent threads to the database.

[Steven Allen <steven@stebalien.com>]

This allows threads yielded from a query to outlive the query.
---
 lib/notmuch.h | 11 +++++++++++
 lib/thread.cc |  6 ++++++
 2 files changed, 17 insertions(+)

diff --git a/lib/notmuch.h b/lib/notmuch.h
index 310a8b8..9a2869b 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -1188,6 +1188,17 @@ notmuch_tags_t *
 notmuch_thread_get_tags (notmuch_thread_t *thread);
 
 /**
+ * Reparent a notmuch_thread_t object onto the database.
+ *
+ * Calling this function allows a notmuch_thread_t object to outlive its
+ * query. The query will automatically be reclaimed when the database is
+ * destroyed but if you want to free its memory before then, you should call
+ * notmuch_thread_destroy.
+ */
+void
+notmuch_thread_own (notmuch_thread_t *thread);
+
+/**
  * Destroy a notmuch_thread_t object.
  */
 void
diff --git a/lib/thread.cc b/lib/thread.cc
index 0c937d7..06fa155 100644
--- a/lib/thread.cc
+++ b/lib/thread.cc
@@ -623,3 +623,9 @@ notmuch_thread_destroy (notmuch_thread_t *thread)
 {
     talloc_free (thread);
 }
+
+void
+notmuch_thread_own (notmuch_thread_t *thread)
+{
+    talloc_steal (thread->notmuch, thread);
+}
-- 
2.6.2