POSIX: don't allocate memory after forking.

base/dir_reader_posix.h

+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_DIR_READER_POSIX_H_
+#define BASE_DIR_READER_POSIX_H_
+
+#include "build/build_config.h"
+
+// This header provides a class, DirReaderPosix, which allows one to open and
+// read from directories without allocating memory. For the interface, see
+// the generic fallback in dir_reader_fallback.h.
+
+#if defined(OS_LINUX)
+#include "base/dir_reader_linux.h"
+#else
+#include "base/dir_reader_fallback.h"
+#endif
+
+namespace base {
+
+#if defined(OS_LINUX)
+typedef DirReaderLinux DirReaderPosix;
+#else
+typedef DirReaderFallback DirReaderPosix;
+#endif
+
+}  // namespace base
+
+#endif // BASE_DIR_READER_POSIX_H_