safepoints.patch

From 751aa448f441d79ec96160887198437aabb25445 Mon Sep 17 00:00:00 2001
From: Aleksey Kliger <alklig@microsoft.com>
Date: Mon, 26 Nov 2018 17:23:54 -0500
Subject: [PATCH] [hack][mtouch] set MONO_THREAD_SUSPEND to coop to emit
 safepoints

---
 tools/mtouch/Assembly.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/mtouch/Assembly.cs b/tools/mtouch/Assembly.cs
index ac37322c8..19aeeeca0 100644
--- a/tools/mtouch/Assembly.cs
+++ b/tools/mtouch/Assembly.cs
@@ -281,13 +281,15 @@ namespace Xamarin.Bundler {
 
 			var aotCompiler = Driver.GetAotCompiler (App, Target.Is64Build);
 			var aotArgs = Driver.GetAotArguments (App, assembly_path, abi, build_dir, asm_output, llvm_aot_ofile, data);
+			var startInfo = Driver.CreateStartInfo (App, aotCompiler, aotArgs, Path.GetDirectoryName (assembly_path));
+			startInfo.EnvironmentVariables ["MONO_THREADS_SUSPEND"] = "coop"; // HACK: causes safepoints to be emited
 			var task = new AOTTask
 			{
 				Assembly = this,
 				AssemblyName = assembly_path,
 				AddBitcodeMarkerSection = BuildTarget != AssemblyBuildTarget.StaticObject && App.EnableMarkerOnlyBitCode,
 				AssemblyPath = asm,
-				ProcessStartInfo = Driver.CreateStartInfo (App, aotCompiler, aotArgs, Path.GetDirectoryName (assembly_path)),
+				ProcessStartInfo = startInfo,
 				AotInfo = aotInfo,
 			};
 
-- 
2.19.1