Enable selecting the sgen major mode (#1546)

* [mmp/mtouch] Add option for concurrent sgen

* [msbuild] Add support for concurrent sgen properties

* [mmp] Test for concurrent sgen option

msbuild/Xamarin.Mac.Tasks.Core/Tasks/MmpTaskBase.cs

@@ -58,6 +58,9 @@ namespace Xamarin.Mac.Tasks
 
 		public bool IsAppExtension { get; set; }
 
+		[Required]
+		public bool EnableSGenConc { get; set; }
+
 		public bool UseXamMacFullFramework { get; set; }
 
 		public string ApplicationName { get; set; }
@@ -150,6 +153,9 @@ namespace Xamarin.Mac.Tasks
 			if (Profiling)
 				args.Add ("/profiling");
 
+			if (EnableSGenConc)
+				args.Add ("/sgen-conc");
+
 			switch ((LinkMode ?? string.Empty).ToLower ()) {
 			case "full":
 				break;
@@ -240,6 +246,7 @@ namespace Xamarin.Mac.Tasks
 			Log.LogTaskProperty ("Architecture", Architecture);
 			Log.LogTaskProperty ("ArchiveSymbols", ArchiveSymbols);
 			Log.LogTaskProperty ("Debug", Debug);
+			Log.LogTaskProperty ("EnableSGenConc", EnableSGenConc);
 			Log.LogTaskProperty ("ExplicitReferences", ExplicitReferences);
 			Log.LogTaskProperty ("ExtraArguments", ExtraArguments);
 			Log.LogTaskProperty ("FrameworkRoot", FrameworkRoot);

msbuild/Xamarin.Mac.Tasks/Xamarin.Mac.Common.props

@@ -54,6 +54,7 @@ Copyright (C) 2013-2014 Xamarin. All rights reserved.
 		<MonoMacResourcePrefix Condition="'$(MonoMacResourcePrefix)' == ''">Resources</MonoMacResourcePrefix>
 		<XamMacResourcePrefix Condition="'$(XamMacResourcePrefix)' == ''">$(MonoMacResourcePrefix)</XamMacResourcePrefix>
 		<IsAppExtension Condition="'$(IsAppExtension)' == ''">False</IsAppExtension>
+		<EnableSGenConc Condition="'$(EnableSGenConc)' == ''">false</EnableSGenConc>
 	</PropertyGroup>
 
 	<PropertyGroup>

msbuild/Xamarin.Mac.Tasks/Xamarin.Mac.Common.targets

@@ -536,7 +536,8 @@ Copyright (C) 2014 Xamarin. All rights reserved.
 			IntermediateOutputPath="$(IntermediateOutputPath)mmp-cache"
 			AppManifest="$(_AppManifest)"
 			SdkVersion="$(MacOSXSdkVersion)"
-			IsAppExtension="$(IsAppExtension)">
+			IsAppExtension="$(IsAppExtension)"
+			EnableSGenConc="$(EnableSGenConc)">
 			<Output TaskParameter="NativeLibraries" ItemName="_NativeLibrary" />
 		</Mmp>
 	</Target>

msbuild/Xamarin.iOS.Tasks.Core/Tasks/MTouchTaskBase.cs

@@ -106,6 +106,9 @@ namespace Xamarin.iOS.Tasks
 
 		public ITaskItem[] LinkDescriptions { get; set; }
 
+		[Required]
+		public bool EnableSGenConc { get; set; }
+
 		[Required]
 		public bool LinkerDumpDependencies { get; set; }
 
@@ -400,6 +403,9 @@ namespace Xamarin.iOS.Tasks
 			if (LinkerDumpDependencies)
 				args.Add ("--linkerdumpdependencies");
 
+			if (EnableSGenConc)
+				args.Add ("--sgen-conc");
+
 			switch (LinkMode.ToLowerInvariant ()) {
 			case "sdkonly": args.Add ("--linksdkonly"); break;
 			case "none":    args.Add ("--nolink"); break;
@@ -638,6 +644,7 @@ namespace Xamarin.iOS.Tasks
 			Log.LogTaskProperty ("CompiledEntitlements", CompiledEntitlements);
 			Log.LogTaskProperty ("Debug", Debug);
 			Log.LogTaskProperty ("EnableGenericValueTypeSharing", EnableGenericValueTypeSharing);
+			Log.LogTaskProperty ("EnableSGenConc", EnableSGenConc);
 			Log.LogTaskProperty ("Entitlements", Entitlements);
 			Log.LogTaskProperty ("ExecutableName", ExecutableName);
 			Log.LogTaskProperty ("ExtraArgs", ExtraArgs);

msbuild/Xamarin.iOS.Tasks.Core/Xamarin.iOS.Common.props

@@ -49,6 +49,7 @@ Copyright (C) 2013-2016 Xamarin. All rights reserved.
 		<MtouchEnableBitcode Condition="'$(MtouchEnableBitcode)' == ''">False</MtouchEnableBitcode>
 		<MtouchUseThumb Condition="'$(MtouchUseThumb)' == ''">False</MtouchUseThumb>
 		<MtouchProjectDirectory>$(MSBuildProjectDirectory)</MtouchProjectDirectory>
+		<MtouchEnableSGenConc Condition="'$(MtouchEnableSGenConc)' == ''">False</MtouchEnableSGenConc>
 
 		<IsMacEnabled>true</IsMacEnabled>
 		<MtouchTargetsEnabled>$(IsMacEnabled)</MtouchTargetsEnabled>

msbuild/Xamarin.iOS.Tasks.Core/Xamarin.iOS.Common.targets

@@ -747,6 +747,7 @@ Copyright (C) 2013-2016 Xamarin. All rights reserved.
 			UseFloat32="$(MtouchFloat32)"
 			UseThumb="$(MtouchUseThumb)"
 			EnableBitcode="$(MtouchEnableBitcode)"
+			EnableSGenConc="$(MtouchEnableSGenConc)"
 			AppExtensionReferences="@(_ResolvedAppExtensionReferences)"
 			ArchiveSymbols="$(MonoSymbolArchive)"
 			Verbosity="$(MtouchVerbosity)"

tests/mmptest/src/MMPTest.cs

@@ -427,6 +427,17 @@ namespace Xamarin.MMP.Tests
 			});
 		}
 
+		[Test]
+		public void Unified_SgenConcurrent_Test ()
+		{
+			RunMMPTest (tmpDir => {
+				TI.UnifiedTestConfig test = new TI.UnifiedTestConfig (tmpDir) {
+					CSProjConfig = "<MonoBundlingExtraArgs>--sgen-conc</MonoBundlingExtraArgs>"
+				};
+				TI.TestUnifiedExecutable (test);
+			});
+		}
+
 		[Test]
 		public void Unified_ShouldGenerateMachineConfigInBundle_WithEmptyOption ()
 		{

tools/common/Application.cs

@@ -55,6 +55,7 @@ namespace Xamarin.Bundler {
 		public Mono.Linker.I18nAssemblies I18n;
 
 		public bool? EnableCoopGC;
+		public bool EnableSGenConc;
 		public MarshalObjectiveCExceptionMode MarshalObjectiveCExceptions;
 		public MarshalManagedExceptionMode MarshalManagedExceptions;
 		public bool IsDefaultMarshalManagedExceptionMode;

tools/common/Driver.cs

@@ -21,6 +21,7 @@ namespace Xamarin.Bundler {
 		static void AddSharedOptions (Application app, Mono.Options.OptionSet options)
 		{
 			options.Add ("coop:", "If the GC should run in cooperative mode.", v => { app.EnableCoopGC = ParseBool (v, "coop"); }, hidden: true);
+			options.Add ("sgen-conc", "Enable the concurrent garbage collector.", v => { app.EnableSGenConc = true; });
 			options.Add ("marshal-objectivec-exceptions:", "Specify how Objective-C exceptions should be marshalled. Valid values: default, unwindmanagedcode, throwmanagedexception, abort and disable. The default depends on the target platform (on watchOS the default is 'throwmanagedexception', while on all other platforms it's 'disable').", v => {
 				switch (v) {
 				case "default":

tools/mmp/driver.cs

@@ -1080,6 +1080,11 @@ namespace Xamarin.Bundler {
 				if (App.EnableDebug)
 					sw.WriteLine ("\txamarin_debug_mode = TRUE;");
 
+				if (App.EnableSGenConc)
+					sw.WriteLine ("\tsetenv (\"MONO_GC_PARAMS\", \"major=marksweep-conc\", 1);");
+				else
+					sw.WriteLine ("\tsetenv (\"MONO_GC_PARAMS\", \"major=marksweep\", 1);");
+
 				if (aot.IsAOT)
 					sw.WriteLine ("\txamarin_mac_aot = TRUE;");
 

tools/mtouch/Application.cs

@@ -242,16 +242,18 @@ namespace Xamarin.Bundler {
 		public string MonoGCParams {
 			get {
 				// Configure sgen to use a small nursery
-				if (IsTodayExtension) {
+				string ret = "nursery-size=512k";
-					return "nursery-size=512k,soft-heap-limit=8m";
+				if (IsTodayExtension || Platform == ApplePlatform.WatchOS) {
-				} else if (Platform == ApplePlatform.WatchOS) {
 					// A bit test shows different behavior
 					// Sometimes apps are killed with ~100mb allocated,
 					// but I've seen apps allocate up to 240+mb as well
-					return "nursery-size=512k,soft-heap-limit=8m";
+					ret += ",soft-heap-limit=8m";
-				} else {
-					return "nursery-size=512k";
 				}
+				if (EnableSGenConc)
+					ret += ",major=marksweep-conc";
+				else
+					ret += ",major=marksweep";
+				return ret;
 			}
 		}