[tracker/wip/carlosg/domain-ontologies: 121/124] tracker-store: Use wal_checkpoint API from TrackerDBInterface

[Carlos Garnacho <carlosg src gnome org>]

commit 9c455f1afee0ba269888aa3bed9f6b60460bfb27
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sat Jun 24 19:24:24 2017 +0200

    tracker-store: Use wal_checkpoint API from TrackerDBInterface
    
    Better than calling the pragma and involving prepared statements

 src/tracker-store/tracker-resources.vala |    2 +-
 src/tracker-store/tracker-store.vala     |   12 +++++++-----
 2 files changed, 8 insertions(+), 6 deletions(-)
---
diff --git a/src/tracker-store/tracker-resources.vala b/src/tracker-store/tracker-resources.vala
index 2f524f6..96b729c 100644
--- a/src/tracker-store/tracker-resources.vala
+++ b/src/tracker-store/tracker-resources.vala
@@ -177,7 +177,7 @@ public class Tracker.Resources : Object {
                var iface = data_manager.get_db_interface ();
 
                // wal checkpoint implies sync
-               Tracker.Store.wal_checkpoint (iface);
+               Tracker.Store.wal_checkpoint (iface, true);
                // sync journal if available
                data.sync ();
 
diff --git a/src/tracker-store/tracker-store.vala b/src/tracker-store/tracker-store.vala
index 4445575..20aa212 100644
--- a/src/tracker-store/tracker-store.vala
+++ b/src/tracker-store/tracker-store.vala
@@ -251,10 +251,10 @@ public class Tracker.Store {
                });
        }
 
-       public static void wal_checkpoint (DBInterface iface) {
+       public static void wal_checkpoint (DBInterface iface, bool blocking) {
                try {
                        debug ("Checkpointing database...");
-                       iface.execute_query ("PRAGMA wal_checkpoint");
+                       iface.sqlite_wal_checkpoint (blocking);
                        debug ("Checkpointing complete...");
                } catch (Error e) {
                        warning (e.message);
@@ -271,7 +271,7 @@ public class Tracker.Store {
                if (n_pages >= 10000) {
                        // do immediate checkpointing (blocking updates)
                        // to prevent excessive wal file growth
-                       wal_checkpoint (iface);
+                       wal_checkpoint (iface, true);
                } else if (n_pages >= 1000) {
                        if (AtomicInt.compare_and_exchange (ref checkpointing, 0, 1)) {
                                // initiate asynchronous checkpointing (not blocking updates)
@@ -286,9 +286,11 @@ public class Tracker.Store {
        }
 
        static void checkpoint_dispatch_cb (DBInterface iface) {
-               // run in checkpoint thread
+               // run in checkpoint thread, we must fetch the right
+               // interface for this thread.
+               var manager = (Data.Manager) iface.get_user_data ();
 
-               wal_checkpoint (iface);
+               wal_checkpoint (manager.get_db_interface (), false);
                AtomicInt.set (ref checkpointing, 0);
        }