[PATCH] debuginfod.cxx: periodically malloc_trim()

[Di Chen]

>From 93cfe0b3e8d51eb18c5807e4b72c17920aefb422 Mon Sep 17 00:00:00 2001
From: Di Chen <dichen@redhat.com>
Date: Mon, 18 Mar 2024 09:06:19 +0800
Subject: [PATCH] debuginfod.cxx: periodically malloc_trim()

Add malloc_trim() for releasing memory which is allocated for temporary
purposes, e.g. answering queries, adding data to the database during
scans.

https://sourceware.org/bugzilla/show_bug.cgi?id=31103

Signed-off-by: Di Chen <dichen@redhat.com>
---
 debuginfod/debuginfod.cxx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/debuginfod/debuginfod.cxx b/debuginfod/debuginfod.cxx
index 72617848..6e1b43ad 100644
--- a/debuginfod/debuginfod.cxx
+++ b/debuginfod/debuginfod.cxx
@@ -70,6 +70,7 @@ extern "C" {
 #include <fcntl.h>
 #include <netdb.h>
 #include <math.h>
+#include <malloc.h>
 #include <float.h>


@@ -4225,6 +4226,7 @@ void groom()

   sqlite3_db_release_memory(db); // shrink the process if possible
   sqlite3_db_release_memory(dbq); // ... for both connections
+  malloc_trim(0); // PR31103: release memory allocated for temporary
purposes
   debuginfod_pool_groom(); // and release any debuginfod_client objects
we've been holding onto

 #if 0 /* PR31265: don't jettison cache unnecessarily */
-- 
2.41.0
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