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diff --git a/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/src/core/posix/backtrace.h b/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/src/core/posix/backtrace.h
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+++ b/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/src/core/posix/backtrace.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: Thomas Voß <thomas.voss@canonical.com>
+ */
+
+#ifndef CORE_POSIX_BACKTRACE_H_
+#define CORE_POSIX_BACKTRACE_H_
+
+#include <core/posix/visibility.h>
+
+#include <functional>
+#include <memory>
+#include <string>
+
+namespace core
+{
+namespace posix
+{
+namespace backtrace
+{
+/**
+ * @brief The Frame class models an individual frame of a backtrace.
+ */
+class Frame
+{
+public:
+    /**
+     * @brief The Symbol class models the symbolic representation of a frame pointer.
+     */
+    class Symbol
+    {
+    public:
+
+        static std::shared_ptr<Symbol> for_testing_from_raw_symbol(const char* symbol);
+
+        Symbol(const Symbol&) = delete;
+        virtual ~Symbol() = default;
+
+        Symbol& operator=(const Symbol&) = delete;
+
+        /**
+         * @brief is_cxx checks whether the symbol refers to a mangled C++ symbol.
+         * @return true iff the symbol refers to a mangled C++ symbol.
+         */
+        virtual bool is_cxx() const = 0;
+
+        /**
+         * @brief demangled returns the demangled C++ symbol name or raw.
+         */
+        virtual std::string demangled() const = 0;
+
+        /**
+         * @brief raw The raw symbolic representation of a frame pointer.
+         * @return
+         */
+        virtual std::string raw() const = 0;
+
+    protected:
+        Symbol() = default;
+    };
+
+    Frame(const Frame&) = delete;
+    virtual ~Frame() = default;
+
+    Frame& operator=(const Frame&) = delete;
+
+    /**
+     * @brief depth returns the depth of this frame in the overall backtrace.
+     */
+    virtual std::size_t depth() const = 0;
+
+    /**
+     * @brief frame_pointer returns the the raw frame pointer of this frame.
+     * @return
+     */
+    virtual void* frame_pointer() const = 0;
+
+    /**
+     * @brief symbol returns the symbolic representation of this frame.
+     */
+    virtual const Symbol& symbol() const = 0;
+
+protected:
+    Frame() = default;
+};
+
+/**
+ * @brief FrameHandler is the functor invoked for every frame of a backtrace.
+ *
+ * A FrameHandler should return true if it wants to continue walking the stack
+ * or false otherwise.
+ */
+typedef std::function<bool(const Frame& frame)> FrameHandler;
+
+/**
+ *@brief visit_with_handler iterates the backtrace of the calling program,
+ *invoking the handler for every frame.
+ *
+ * A FrameHandler should return true if it wants to continue walking the stack
+ * or false otherwise
+ *
+ * @param handler The handler invoked for every frame.
+ */
+void CORE_POSIX_DLL_PUBLIC visit_with_handler(const FrameHandler& handler);
+}
+}
+}
+
+#endif // CORE_POSIX_BACKTRACE_H_