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mojo/public/system/core.h

Index: mojo/public/system/core.h
diff --git a/mojo/public/system/core.h b/mojo/public/system/core.h
index 88f2af5c9423a87672f80df577fd449be83bc472..c19ae734b315ffe067a82115195783398fa50bac 100644
--- a/mojo/public/system/core.h
+++ b/mojo/public/system/core.h
@@ -310,6 +310,31 @@ inline MojoResult ReadMessage(Handle handle,
                          flags);
 }
 
+// Closes handle_ when deleted.

[darin (slow to review), 2013/11/01 21:48:52]

nit: how about breaking this out into its own header file. I suspect we may have
more utilities like this in the future.

(We may also want to embolden this class with move semantic goodness as in
scoped_ptr.h, but that can be for another day.)

+// This probably wants tons of improvements, but those can be made as needed.
+class ScopedHandle {
+ public:
+  ScopedHandle(Handle handle) : handle_(handle) {
+  }
+
+  ~ScopedHandle() {
+    if (handle_.value == kInvalidHandle.value)
+      return;
+    Close(handle_);
+    release();
+  }
+
+  Handle get() const { return handle_; }
+  Handle release() {
+    Handle temp = handle_;
+    handle_ = kInvalidHandle;
+    return temp;
+  }
+
+ private:
+  Handle handle_;
+};
+
 }  // namespace mojo
 #endif