From c205570127c9f35607e55e96c4a2fac4c2553e99 Mon Sep 17 00:00:00 2001
From: Zachary Turner <zturner@google.com>
Date: Mon, 27 Apr 2015 17:19:26 +0000
Subject: Make an RAII com initializer.

Differential Revision: http://reviews.llvm.org/D9267
Reviewed By: Aaron Ballman, David Majnemer

llvm-svn: 235898
---
 llvm/lib/Support/Windows/COM.inc | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 llvm/lib/Support/Windows/COM.inc

(limited to 'llvm/lib/Support/Windows')

diff --git a/llvm/lib/Support/Windows/COM.inc b/llvm/lib/Support/Windows/COM.inc
new file mode 100644
index 00000000000..0c50d6f74ea
--- /dev/null
+++ b/llvm/lib/Support/Windows/COM.inc
@@ -0,0 +1,37 @@
+//===- llvm/Support/Windows/COM.inc - Windows COM Implementation *- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Windows portion of COM support.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+//=== WARNING: Implementation here must contain only Windows code.
+//===----------------------------------------------------------------------===//
+
+#include <objbase.h>
+
+namespace llvm {
+namespace sys {
+
+InitializeCOMRAII::InitializeCOMRAII(COMThreadingMode Threading,
+                                     bool SpeedOverMemory) {
+  DWORD Coinit = 0;
+  if (Threading == COMThreadingMode::SingleThreaded)
+    Coinit |= COINIT_APARTMENTTHREADED;
+  else
+    Coinit |= COINIT_MULTITHREADED;
+  if (SpeedOverMemory)
+    Coinit |= COINIT_SPEED_OVER_MEMORY;
+  ::CoInitializeEx(nullptr, Coinit);
+}
+
+InitializeCOMRAII::~InitializeCOMRAII() { ::CoUninitialize(); }
+}
+}
-- 
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