lib: write talloc report in notmuch_database_destroy

Since most memory allocation is (ultimately) in the talloc context
defined by a notmuch_database_t pointer, this gives a more complete
view of memory still allocated at program shutdown.

We also change the talloc report in notmuch.c to mode "a" to avoid
clobbering the newly reported log.

2 files changed, 10 insertions, 1 deletions

diff --git a/lib/database.cc b/lib/database.cc
index 96458f6f..0052cb65 100644
--- a/lib/database.cc
+++ b/lib/database.cc
@@ -733,6 +733,15 @@ notmuch_status_t
 notmuch_database_destroy (notmuch_database_t *notmuch)
 {
     notmuch_status_t status;
+    const char* talloc_report;
+
+    talloc_report = getenv ("NOTMUCH_TALLOC_REPORT");
+    if (talloc_report && strcmp (talloc_report, "") != 0) {
+	FILE *report = fopen (talloc_report, "a");
+	if (report) {
+	    talloc_report_full (notmuch, report);
+	}
+    }
 
     status = notmuch_database_close (notmuch);
 
diff --git a/notmuch.c b/notmuch.c
index d0a94fc2..1404b70c 100644
--- a/notmuch.c
+++ b/notmuch.c
@@ -589,7 +589,7 @@ main (int argc, char *argv[])
 	 * talloc_enable_null_tracking
 	 */
 
-	FILE *report = fopen (talloc_report, "w");
+	FILE *report = fopen (talloc_report, "a");
 	if (report) {
 	    talloc_report_full (NULL, report);
 	} else {