TYPE3

[iec.git] / src / type3_AndroidCloud / anbox-master / src / anbox / common / fd.h

diff --git a/src/type3_AndroidCloud/anbox-master/src/anbox/common/fd.h b/src/type3_AndroidCloud/anbox-master/src/anbox/common/fd.h
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+/*
+ * Copyright © 2014 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authored by: Kevin DuBois <kevin.dubois@canonical.com>
+ */
+
+#ifndef ANBOX_COMMON_FD_H_
+#define ANBOX_COMMON_FD_H_
+
+#include <memory>
+
+namespace anbox {
+struct IntOwnedFd {
+  int int_owned_fd;
+};
+class Fd {
+ public:
+  // transfer ownership of the POD-int to the object. The int no longer needs
+  // close()ing,
+  // and has the lifetime of the Fd object.
+  explicit Fd(int fd);
+  explicit Fd(IntOwnedFd);
+  static int const invalid{-1};
+  Fd();  // Initializes fd to the anbox::Fd::invalid;
+  Fd(Fd&&);
+  Fd(Fd const&) = default;
+  Fd& operator=(Fd);
+
+  // bit of a convenient kludge. take care not to close or otherwise destroy the
+  // FD.
+  operator int() const;
+
+ private:
+  std::shared_ptr<int> fd;
+};
+}  // namespace anbox
+
+#endif