From 797a36228bdb3b77b7314585a31de6f27feab51d Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Tue, 6 Apr 2021 04:42:24 +0200
Subject: Use malloc_trim to reduce memory usage after freeing memory

---
 src/ImageViewer.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/ImageViewer.cpp')

diff --git a/src/ImageViewer.cpp b/src/ImageViewer.cpp
index 6efc688..9297edf 100644
--- a/src/ImageViewer.cpp
+++ b/src/ImageViewer.cpp
@@ -5,6 +5,7 @@
 #include "../include/ResourceLoader.hpp"
 #include "../plugins/Manga.hpp"
 #include <cmath>
+#include <malloc.h>
 #include <SFML/Window/Event.hpp>
 #include <SFML/Graphics/RenderWindow.hpp>
 #include <SFML/Graphics/RectangleShape.hpp>
@@ -265,6 +266,7 @@ namespace QuickMedia {
         min_page_center_dist = 9999999.0;
         page_closest_to_center = -1;
 
+        bool loaded_textures_changed = false;
         int page_i = 0;
         for(auto &page_data : image_data) {
             if(page_data) {
@@ -287,6 +289,7 @@ namespace QuickMedia {
                         page_data->image_status = ImageStatus::FAILED_TO_LOAD;
                     }
                     page_data->image.reset();
+                    loaded_textures_changed = true;
                 }
                 page_data->visible_on_screen = false;
             }
@@ -349,10 +352,14 @@ namespace QuickMedia {
             if(page_data && !page_data->visible_on_screen) {
                 fprintf(stderr, "ImageViewer: Unloaded page %d\n", 1 + i);
                 page_data.reset();
+                loaded_textures_changed = true;
             }
             ++i;
         }
 
+        if(loaded_textures_changed)
+            malloc_trim(0);
+
         return ImageViewerAction::NONE;
     }
 
-- 
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