[Xcode9] Add IOSurface bindings

src/Constants.iOS.cs.in

@@ -115,6 +115,17 @@ namespace MonoTouch {
 		public const string VisionLibrary = "/System/Library/Frameworks/Vision.framework/Vision";
 		public const string FileProviderLibrary = "/System/Library/Frameworks/FileProvider.framework/FileProvider";
 		public const string FileProviderUILibrary = "/System/Library/Frameworks/FileProviderUI.framework/FileProviderUI";
+		public static string IOSurfaceLibrary {
+			get {
+// Disabled because of bug #59201
+// #if !COREBUILD && !MTOUCH
+// // Sidenote: this is in /System/Library/Frameworks/IOSurface.framework/IOSurface in macOS 10.12.
+// 				if (!XamCore.UIKit.UIDevice.CurrentDevice.CheckSystemVersion (11, 0))
+// 					return "/System/Library/PrivateFrameworks/IOSurface.framework/IOSurface";
+// #endif
+				return "/System/Library/Frameworks/IOSurface.framework/IOSurface";
+			}
+		}
 		public const string PdfKitLibrary = "/System/Library/Frameworks/PDFKit.framework/PDFKit";
 	}
 }

src/Constants.mac.cs.in

@@ -129,6 +129,7 @@ namespace MonoMac {
 		// macOS 10.13
 		public const string CoreMLLibrary = "/System/Library/Frameworks/CoreML.framework/CoreML";
 		public const string VisionLibrary = "/System/Library/Frameworks/Vision.framework/Vision";
+		public const string IOSurfaceLibrary = "/System/Library/Frameworks/IOSurface.framework/IOSurface";
 		public const string PhotosUILibrary = "/System/Library/Frameworks/Photos.framework/PhotosUI";
 		public const string ExternalAccessoryLibrary = "/System/Library/Frameworks/ExternalAccessory.framework/ExternalAccessory";
 	}

src/Foundation/NSObject.mac.cs

@@ -99,6 +99,7 @@ public partial class NSObject : INativeObject
 		static IntPtr pc = Dlfcn.dlopen (Constants.PrintCoreLibrary, 1);
 		static IntPtr cml = Dlfcn.dlopen (Constants.CoreMLLibrary, 1);
 		static IntPtr vn = Dlfcn.dlopen (Constants.VisionLibrary, 1);
+		static IntPtr ios = Dlfcn.dlopen (Constants.IOSurfaceLibrary, 1);
 		static IntPtr ex = Dlfcn.dlopen (Constants.ExternalAccessoryLibrary, 1);
 #endif
 		// ** IF YOU ADD ITEMS HERE PLEASE UPDATE linker/ObjCExtensions.cs and mmp/linker/MonoMac.Tuner/MonoMacNamespaces.cs

src/IOSurface/IODefs.cs

@@ -0,0 +1,38 @@
+//
+// IOSurface
+//
+// Authors: 
+//    Miguel de Icaza (miguel@xamarin.com)
+//
+// Copyright 2017 Microsoft
+//
+
+using System;
+using XamCore.ObjCRuntime;
+
+namespace XamCore.IOSurface {
+
+	public enum IOSurfaceLockOptions : uint {
+		ReadOnly = 1,
+		AvoidSync = 2,
+	}
+
+	public enum IOSurfacePurgeabilityState : uint {
+		NonVolatile = 0,
+		Volatile = 1,
+		Empty = 2,
+		KeepCurrent = 3,
+	}
+
+	// To be used with kIOSurfaceCacheMode or IOSurfacePropertyKeyCacheMode
+	public enum IOSurfaceMemoryMap {
+		DefaultCache = 0,
+		InhibitCache = 1 << 8,
+		WriteThruCache = 2 << 8,
+		CopybackCache = 3 << 8,
+		WriteCombineCache = 4 << 8,
+		CopybackInnerCache = 5 << 8,
+	};
+
+
+}

src/IOSurface/IOSurface.cs

@@ -0,0 +1,98 @@
+// 
+// IOSurface.cs
+//
+// Copyright 2016 Microsoft 
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+#if XAMCORE_2_0
+using System;
+using System.Runtime.InteropServices;
+using XamCore.CoreFoundation;
+using XamCore.ObjCRuntime;
+
+namespace XamCore.IOSurface {
+	public partial class IOSurface {
+
+		// kern_return_t
+		// See bug #59201 [iOS (10,0)]
+		[iOS (11, 0)]
+		[Mac (10, 12)]
+		public int Lock (IOSurfaceLockOptions options, ref int seed)
+		{
+			unsafe {
+				fixed (int *p = &seed){
+					return _Lock (options, (IntPtr) p);
+				}
+			}
+		}
+
+		// kern_return_t
+		// See bug #59201 [iOS (10,0)]
+		[iOS (11, 0)]
+		[Mac (10, 12)]
+		public int Lock (IOSurfaceLockOptions options)
+		{
+			return _Lock (options, IntPtr.Zero);
+		}
+
+		// kern_return_t
+		// See bug #59201 [iOS (10,0)]
+		[iOS (11, 0)]
+		[Mac (10, 12)]
+		public int Unlock (IOSurfaceLockOptions options, ref int seed)
+		{
+			unsafe {
+				fixed (int *p = &seed){
+					return _Unlock (options, (IntPtr) p);
+				}
+			}
+		}
+
+		// kern_return_t
+		// See bug #59201 [iOS (10,0)]
+		[iOS (11, 0)]
+		[Mac (10, 12)]
+		public int Unlock (IOSurfaceLockOptions options)
+		{
+			return _Unlock (options, IntPtr.Zero);
+		}
+
+#if !MONOMAC
+		// kern_return_t
+		[iOS (11, 0)]
+		public int SetPurgeable (IOSurfacePurgeabilityState newState, ref IOSurfacePurgeabilityState oldState)
+		{
+			unsafe {
+				fixed (IOSurfacePurgeabilityState *p = &oldState){
+					return _SetPurgeable (newState, (IntPtr) p);
+				}
+			}
+		}
+
+		[iOS (11, 0)]
+		public int SetPurgeable (IOSurfacePurgeabilityState newState)
+		{
+			return _SetPurgeable (newState, IntPtr.Zero);
+		}
+#endif
+	}
+}
+#endif

src/frameworks.sources

@@ -879,6 +879,13 @@ INTENTS_SOURCES = \
 	Intents/INWorkoutGoalUnitTypeResolutionResult.cs \
 	Intents/INWorkoutLocationTypeResolutionResult.cs \
 
+# IOSurface
+IOSURFACE_CORE_SOURCES = \
+	IOSurface/IODefs.cs
+
+IOSURFACE_SOURCES = \
+	IOSurface/IOSurface.cs
+
 # JavaScriptCore
 
 JAVASCRIPTCORE_SOURCES = \
@@ -1611,6 +1618,7 @@ MAC_FRAMEWORKS =            \
 	ImageIO                 \
 	ImageKit                \
 	Intents                 \
+	IOSurface 		\
 	JavaScriptCore          \
 	LocalAuthentication     \
 	MapKit                  \
@@ -1692,6 +1700,7 @@ IOS_FRAMEWORKS =         \
 	ImageIO \
 	Intents \
 	IntentsUI \
+	IOSurface \
 	JavaScriptCore \
 	LocalAuthentication \
 	MapKit \