From 751573ce6fff547b6a53769245814bc2d3fed17f Mon Sep 17 00:00:00 2001
From: Sergey Sharybin <sergey.vfx@gmail.com>
Date: Tue, 22 Nov 2016 16:03:16 +0100
Subject: Fix T50034: Blender changes processor affinity unauthorized

---
 intern/cycles/util/util_system.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'intern/cycles/util/util_system.cpp')

diff --git a/intern/cycles/util/util_system.cpp b/intern/cycles/util/util_system.cpp
index d5fac9a0e34..2c7abbaacbb 100644
--- a/intern/cycles/util/util_system.cpp
+++ b/intern/cycles/util/util_system.cpp
@@ -89,6 +89,20 @@ int system_cpu_thread_count()
 	return count;
 }
 
+unsigned short system_cpu_process_groups(unsigned short max_groups,
+                                         unsigned short *grpups)
+{
+#ifdef _WIN32
+	unsigned short group_count = max_groups;
+	if(!GetProcessGroupAffinity(GetCurrentProcess(), &group_count, grpups)) {
+		return 0;
+	}
+	return group_count;
+#else
+	return 0;
+#endif
+}
+
 #if !defined(_WIN32) || defined(FREE_WINDOWS)
 static void __cpuid(int data[4], int selector)
 {
-- 
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