From 3dabe5238de015aa163491558173d03f98973ce9 Mon Sep 17 00:00:00 2001
From: kokorokonekuto <199444877+kokorokonekuto@users.noreply.github.com>
Date: Mon, 16 Feb 2026 00:47:48 +0530
Subject: [PATCH 1/2] implement Sys_LowPhysicalMemory

Currently tested on Linux (this should work on FreeBSD as well).
---
 code/sys/sys_unix.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/code/sys/sys_unix.c b/code/sys/sys_unix.c
index 2ed5f1b0f2..38ae555d62 100644
--- a/code/sys/sys_unix.c
+++ b/code/sys/sys_unix.c
@@ -42,6 +42,15 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #include <time.h>
 #include <sys/resource.h>
 
+#if defined (__linux__) || defined (__FreeBSD__)
+#include <sys/sysinfo.h>
+#endif
+
+#ifdef __APPLE__
+#include <sys/sysctl.h>
+#include <sys/types.h>
+#endif
+
 qboolean stdinIsATTY;
 
 static char execBuffer[ 1024 ];
@@ -595,7 +604,26 @@ TODO
 */
 qboolean Sys_LowPhysicalMemory( void )
 {
+#if defined (__linux__) || defined (__FreeBSD__)
+        struct sysinfo info;
+
+	if ( sysinfo(&info) == -1 )
+		return qfalse;
+
+	return info.totalram <= MEM_THRESHOLD;
+#elif defined (__APPLE__)
+	int mib[2] = { CTL_HW, HW_MEMSIZE };
+        size_t len;
+	int64_t total_mem;
+
+	len = sizeof(int64_t);
+	if ( sysctl(mib, 2, &total_mem, &len, NULL, 0) == -1 )
+		return qfalse;
+
+	return total_mem <= MEM_THRESHOLD;
+#else
 	return qfalse;
+#endif
 }
 
 /*

From f55de6af1d534db73803efdc2cfe06bcff8a3232 Mon Sep 17 00:00:00 2001
From: kokorokonekuto <199444877+kokorokonekuto@users.noreply.github.com>
Date: Mon, 16 Feb 2026 01:15:21 +0530
Subject: [PATCH 2/2] fix on freebsd

FreeBSD doesn't have Linux specific sysinfo
---
 code/sys/sys_unix.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/code/sys/sys_unix.c b/code/sys/sys_unix.c
index 38ae555d62..60f6e643c8 100644
--- a/code/sys/sys_unix.c
+++ b/code/sys/sys_unix.c
@@ -42,11 +42,11 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #include <time.h>
 #include <sys/resource.h>
 
-#if defined (__linux__) || defined (__FreeBSD__)
+#if defined (__linux__)
 #include <sys/sysinfo.h>
 #endif
 
-#ifdef __APPLE__
+#if defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__APPLE__)
 #include <sys/sysctl.h>
 #include <sys/types.h>
 #endif
@@ -604,16 +604,23 @@ TODO
 */
 qboolean Sys_LowPhysicalMemory( void )
 {
-#if defined (__linux__) || defined (__FreeBSD__)
-        struct sysinfo info;
+#if defined (__linux__)
+	struct sysinfo info;
 
 	if ( sysinfo(&info) == -1 )
 		return qfalse;
 
 	return info.totalram <= MEM_THRESHOLD;
-#elif defined (__APPLE__)
+#elif defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__APPLE__)
+        #if defined (__FreeBSD__)
+	int mib[2] = { CTL_HW, HW_PHYSMEM };
+        #elif defined (__OpenBSD__)
+	int mib[2] = { CTL_HW, HW_PHYSMEM64 };
+        #elif defined (__APPLE__)
 	int mib[2] = { CTL_HW, HW_MEMSIZE };
-        size_t len;
+        #endif
+
+	size_t len;
 	int64_t total_mem;
 
 	len = sizeof(int64_t);