From 3167529fbf49437fcbe2c2117ef6a52a0a435966 Mon Sep 17 00:00:00 2001
From: Joe Osborn <jcoa2018@pomona.edu>
Date: Tue, 31 Oct 2023 07:18:45 -0700
Subject: [PATCH] increase chunk size for reads/writes under emscripten
 (#15845)

---
 tasks/task_save.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tasks/task_save.c b/tasks/task_save.c
index 859f1629c7f..fd4b1975078 100644
--- a/tasks/task_save.c
+++ b/tasks/task_save.c
@@ -62,7 +62,11 @@
 #include "../cheat_manager.h"
 #endif
 
-#if defined(HAVE_LIBNX) || defined(_3DS)
+#ifdef EMSCRIPTEN
+/* Filesystem is in-memory anyway, use huge chunks since each
+   read/write is a possible suspend to JS code */
+#define SAVE_STATE_CHUNK 4096 * 4096
+#elif defined(HAVE_LIBNX) || defined(_3DS)
 #define SAVE_STATE_CHUNK 4096 * 10
 #else
 #define SAVE_STATE_CHUNK 4096