From e98eb4659e1c5c2b0afd0df1a207febaa3882eb3 Mon Sep 17 00:00:00 2001
From: Nekotekina <nekotekina@gmail.com>
Date: Mon, 9 Nov 2020 17:15:57 +0300
Subject: [PATCH] Implement utils::memory_lock

---
 rpcs3/util/vm.hpp        | 3 +++
 rpcs3/util/vm_native.cpp | 9 +++++++++
 2 files changed, 12 insertions(+)

diff --git a/rpcs3/util/vm.hpp b/rpcs3/util/vm.hpp
index 0dcc02d574..689eded128 100644
--- a/rpcs3/util/vm.hpp
+++ b/rpcs3/util/vm.hpp
@@ -39,6 +39,9 @@ namespace utils
 	// Set memory protection
 	void memory_protect(void* pointer, std::size_t size, protection prot);
 
+	// Lock pages in memory
+	void memory_lock(void* pointer, std::size_t size);
+
 	// Shared memory handle
 	class shm
 	{
diff --git a/rpcs3/util/vm_native.cpp b/rpcs3/util/vm_native.cpp
index 2493142ab7..6a8190d714 100644
--- a/rpcs3/util/vm_native.cpp
+++ b/rpcs3/util/vm_native.cpp
@@ -180,6 +180,15 @@ namespace utils
 #endif
 	}
 
+	void memory_lock(void* pointer, std::size_t size)
+	{
+#ifdef _WIN32
+		verify("VirtualLock" HERE), ::VirtualLock(pointer, size);
+#else
+		verify("mlock" HERE), !::mlock(pointer, size);
+#endif
+	}
+
 	shm::shm(u32 size, u32 flags)
 		: m_size(::align(size, 0x10000))
 		, m_flags(flags)