[tracker-miners] tracker-miner-fs: Clear memory after some time idle

[Carlos Garnacho <carlosg src gnome org>]

commit ccb0b4ebbff4dfacf17ea67ce56bb27c39741811
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Aug 30 22:44:19 2020 +0200

    tracker-miner-fs: Clear memory after some time idle
    
    Be more aggresive at releasing memory and call malloc_trim() after
    some time idle.

 src/miners/fs/tracker-main.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
---
diff --git a/src/miners/fs/tracker-main.c b/src/miners/fs/tracker-main.c
index 220916dc3..0c9ed2ac3 100644
--- a/src/miners/fs/tracker-main.c
+++ b/src/miners/fs/tracker-main.c
@@ -57,6 +57,7 @@
 static GMainLoop *main_loop;
 static GDBusProxy *index_proxy;
 static GPtrArray *proxy_folders;
+static guint cleanup_id;
 
 static gint initial_sleep = -1;
 static gboolean no_daemon;
@@ -432,6 +433,26 @@ miner_start (TrackerMiner  *miner,
                                                   miner);
 }
 
+static gboolean
+cleanup_cb (gpointer user_data)
+{
+       /* Reclaim as much memory as possible */
+       malloc_trim (0);
+
+       cleanup_id = 0;
+
+       return G_SOURCE_REMOVE;
+}
+
+static void
+miner_started_cb (TrackerMinerFS *fs)
+{
+       if (cleanup_id) {
+               g_source_remove (cleanup_id);
+               cleanup_id = 0;
+       }
+}
+
 static void
 miner_finished_cb (TrackerMinerFS *fs,
                    gdouble         seconds_elapsed,
@@ -451,6 +472,8 @@ miner_finished_cb (TrackerMinerFS *fs,
                                                         TRUE);
        }
 
+       cleanup_id = g_timeout_add_seconds (30, cleanup_cb, NULL);
+
        /* We're not sticking around for file updates, so stop
         * the mainloop and exit.
         */