1 files changed, 38 insertions, 0 deletions
diff --git a/devtools/shared/heapsnapshot/FileDescriptorOutputStream.h b/devtools/shared/heapsnapshot/FileDescriptorOutputStream.h
new file mode 100644
index 0000000000..5d8f31424c
--- /dev/null
+++ b/devtools/shared/heapsnapshot/FileDescriptorOutputStream.h
@@ -0,0 +1,38 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_devtools_FileDescriptorOutputStream_h
+#define mozilla_devtools_FileDescriptorOutputStream_h
+
+#include <prio.h>
+
+#include "mozilla/AlreadyAddRefed.h"
+#include "mozilla/ipc/FileDescriptor.h"
+#include "nsIOutputStream.h"
+
+namespace mozilla {
+namespace devtools {
+
+class FileDescriptorOutputStream final : public nsIOutputStream {
+ private:
+  PRFileDesc* fd;
+
+ public:
+  static already_AddRefed<FileDescriptorOutputStream> Create(
+      const ipc::FileDescriptor& fileDescriptor);
+
+ private:
+  explicit FileDescriptorOutputStream(PRFileDesc* prfd) : fd(prfd) {}
+
+  virtual ~FileDescriptorOutputStream() {}
+
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIOUTPUTSTREAM
+};
+
+}  // namespace devtools
+}  // namespace mozilla
+
+#endif  // mozilla_devtools_FileDescriptorOutputStream_h