Support/FileSystem: Implement canonicalize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146363 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 20 insertions, 0 deletions

diff --git a/lib/Support/Windows/Windows.h b/lib/Support/Windows/Windows.h
index 5c1da0d617..2754075035 100644
--- a/lib/Support/Windows/Windows.h
+++ b/lib/Support/Windows/Windows.h
@@ -128,6 +128,24 @@ struct FindHandleTraits : CommonHandleTraits {
   }
 };
 
+struct FileMappingHandleTraits : CommonHandleTraits {
+  static handle_type GetInvalid() {
+    return 0;
+  }
+};
+
+struct MappedViewOfFileHandleTraits : CommonHandleTraits {
+  typedef LPVOID handle_type;
+
+  static handle_type GetInvalid() {
+    return 0;
+  }
+
+  static void Close(handle_type h) {
+    ::UnmapViewOfFile(h);
+  }
+};
+
 struct FileHandleTraits : CommonHandleTraits {};
 
 typedef ScopedHandle<CommonHandleTraits> ScopedCommonHandle;
@@ -135,6 +153,8 @@ typedef ScopedHandle<FileHandleTraits>   ScopedFileHandle;
 typedef ScopedHandle<CryptContextTraits> ScopedCryptContext;
 typedef ScopedHandle<FindHandleTraits>   ScopedFindHandle;
 typedef ScopedHandle<JobHandleTraits>    ScopedJobHandle;
+typedef ScopedHandle<FileMappingHandleTraits> ScopedFileMappingHandle;
+typedef ScopedHandle<MappedViewOfFileHandleTraits> ScopedMappedViewOfFileHandle;
 
 namespace llvm {
 template <class T>