Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / libsupc++ / exception_ptr.h

diff --git a/libstdc++-v3/libsupc++/exception_ptr.h b/libstdc++-v3/libsupc++/exception_ptr.h
new file mode 100644 (file)
index 0000000..b24ec21
--- /dev/null
+++ b/libstdc++-v3/libsupc++/exception_ptr.h
@@ -0,0 +1,171 @@
+// Exception Handling support header (exception_ptr class) for -*- C++ -*-
+
+// Copyright (C) 2008, 2009 Free Software Foundation
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+// 
+// GCC 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 General Public License for more details.
+// 
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file exception_ptr.h
+ *  This is an internal header file, included by other headers and the
+ *  implementation. You should not attempt to use it directly.
+ */
+
+#ifndef _EXCEPTION_PTR_H
+#define _EXCEPTION_PTR_H
+
+#pragma GCC visibility push(default)
+
+#include <bits/c++config.h>
+#include <exception_defines.h>
+
+#if !defined(_GLIBCXX_ATOMIC_BUILTINS_4)
+#  error This platform does not support exception propagation.
+#endif
+
+extern "C++" {
+
+namespace std 
+{
+  /**
+   * @addtogroup exceptions
+   * @{
+   */
+
+  // Hide the free operators from other types
+  namespace __exception_ptr
+  {
+    /**
+     * @brief An opaque pointer to an arbitrary exception.
+     */
+    class exception_ptr;
+  }
+
+  using __exception_ptr::exception_ptr;
+
+  /** Obtain an %exception_ptr to the currently handled exception. If there
+   *  is none, or the currently handled exception is foreign, return the null
+   *  value.
+   */
+  exception_ptr current_exception() throw();
+
+  /// Throw the object pointed to by the %exception_ptr.
+  void rethrow_exception(exception_ptr) __attribute__ ((__noreturn__));
+
+  /// Obtain an %exception_ptr pointing to a copy of the supplied object.
+  template<typename _Ex>
+    exception_ptr 
+    copy_exception(_Ex __ex) throw();
+
+  namespace __exception_ptr
+  {
+    bool 
+    operator==(const exception_ptr&, const exception_ptr&) throw();
+
+    bool 
+    operator!=(const exception_ptr&, const exception_ptr&) throw();
+
+    class exception_ptr
+    {
+      void* _M_exception_object;
+
+      explicit exception_ptr(void* __e) throw();
+
+      void _M_addref() throw();
+      void _M_release() throw();
+
+      void *_M_get() const throw();
+
+      void _M_safe_bool_dummy();
+
+      friend exception_ptr std::current_exception() throw();
+      friend void std::rethrow_exception(exception_ptr);
+
+    public:
+      exception_ptr() throw();
+
+      typedef void (exception_ptr::*__safe_bool)();
+
+      // For construction from nullptr or 0.
+      exception_ptr(__safe_bool) throw();
+
+      exception_ptr(const exception_ptr&) throw();
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+      exception_ptr(exception_ptr&& __o) throw()
+      : _M_exception_object(__o._M_exception_object)
+      { __o._M_exception_object = 0; }
+#endif
+
+      exception_ptr& 
+      operator=(const exception_ptr&) throw();
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+      exception_ptr& 
+      operator=(exception_ptr&& __o) throw()
+      {
+        exception_ptr(static_cast<exception_ptr&&>(__o)).swap(*this);
+        return *this;
+      }
+#endif
+
+      ~exception_ptr() throw();
+
+      void 
+      swap(exception_ptr&) throw();
+
+#ifdef _GLIBCXX_EH_PTR_COMPAT
+      // Retained for compatibility with CXXABI_1.3.
+      bool operator!() const throw();
+      operator __safe_bool() const throw();
+#endif
+
+      friend bool 
+      operator==(const exception_ptr&, const exception_ptr&) throw();
+
+      const type_info*
+      __cxa_exception_type() const throw();
+    };
+
+  } // namespace __exception_ptr
+
+
+  template<typename _Ex>
+    exception_ptr 
+    copy_exception(_Ex __ex) throw()
+    {
+      __try
+       {
+         throw __ex;
+       }
+      __catch(...)
+       {
+         return current_exception ();
+       }
+    }
+
+  // @} group exceptions
+} // namespace std
+
+} // extern "C++"
+
+#pragma GCC visibility pop
+
+#endif