From: Mehdi Amini <mehdi.amini@apple.com>
Date: Tue, 15 Dec 2015 05:53:41 +0000 (+0000)
Subject: Fix MSVC build with LLVM_ENABLE_THREADS=OFF
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=d99f1b2161305f15e2ee6c1de1e397d53609c72e

Fix MSVC build with LLVM_ENABLE_THREADS=OFF

Follow-up to the ThreadPool implementation.

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255621 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Support/ThreadPool.cpp b/lib/Support/ThreadPool.cpp
index bc004dfb8a8..d4dcb2ee96d 100644
--- a/lib/Support/ThreadPool.cpp
+++ b/lib/Support/ThreadPool.cpp
@@ -125,16 +125,25 @@ void ThreadPool::wait() {
   while (!Tasks.empty()) {
     auto Task = std::move(Tasks.front());
     Tasks.pop();
-    Task();
+#ifndef _MSC_VER
+        Task();
+#else
+        Task(/* unused */ false);
+#endif
   }
 }
 
 std::shared_future<ThreadPool::VoidTy> ThreadPool::asyncImpl(TaskTy Task) {
+#ifndef _MSC_VER
   // Get a Future with launch::deferred execution using std::async
   auto Future = std::async(std::launch::deferred, std::move(Task)).share();
   // Wrap the future so that both ThreadPool::wait() can operate and the
   // returned future can be sync'ed on.
   PackagedTaskTy PackagedTask([Future]() { Future.get(); });
+#else
+  auto Future = std::async(std::launch::deferred, std::move(Task), false).share();
+  PackagedTaskTy PackagedTask([Future](bool) -> bool { Future.get(); return false; });
+#endif
   Tasks.push(std::move(PackagedTask));
   return Future;
 }