LCOV - code coverage report
Current view: top level - usr/include/c++/4.9 - new (source / functions) Hit Total Coverage
Test: coverage.info Lines: 2 3 66.7 %
Date: 2016-09-12 13:07:23 Functions: 1 2 50.0 %

          Line data    Source code
       1             : // The -*- C++ -*- dynamic memory management header.
       2             : 
       3             : // Copyright (C) 1994-2014 Free Software Foundation, Inc.
       4             : 
       5             : // This file is part of GCC.
       6             : //
       7             : // GCC is free software; you can redistribute it and/or modify
       8             : // it under the terms of the GNU General Public License as published by
       9             : // the Free Software Foundation; either version 3, or (at your option)
      10             : // any later version.
      11             : // 
      12             : // GCC is distributed in the hope that it will be useful,
      13             : // but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15             : // GNU General Public License for more details.
      16             : // 
      17             : // Under Section 7 of GPL version 3, you are granted additional
      18             : // permissions described in the GCC Runtime Library Exception, version
      19             : // 3.1, as published by the Free Software Foundation.
      20             : 
      21             : // You should have received a copy of the GNU General Public License and
      22             : // a copy of the GCC Runtime Library Exception along with this program;
      23             : // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      24             : // <http://www.gnu.org/licenses/>.
      25             : 
      26             : /** @file new
      27             :  *  This is a Standard C++ Library header.
      28             :  *
      29             :  *  The header @c new defines several functions to manage dynamic memory and
      30             :  *  handling memory allocation errors; see
      31             :  *  http://gcc.gnu.org/onlinedocs/libstdc++/18_support/howto.html#4 for more.
      32             :  */
      33             : 
      34             : #ifndef _NEW
      35             : #define _NEW
      36             : 
      37             : #pragma GCC system_header
      38             : 
      39             : #include <bits/c++config.h>
      40             : #include <exception>
      41             : 
      42             : #pragma GCC visibility push(default)
      43             : 
      44             : extern "C++" {
      45             : 
      46             : namespace std 
      47             : {
      48             :   /**
      49             :    *  @brief  Exception possibly thrown by @c new.
      50             :    *  @ingroup exceptions
      51             :    *
      52             :    *  @c bad_alloc (or classes derived from it) is used to report allocation
      53             :    *  errors from the throwing forms of @c new.  */
      54             :   class bad_alloc : public exception 
      55             :   {
      56             :   public:
      57             :     bad_alloc() throw() { }
      58             : 
      59             :     // This declaration is not useless:
      60             :     // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118
      61             :     virtual ~bad_alloc() throw();
      62             : 
      63             :     // See comment in eh_exception.cc.
      64             :     virtual const char* what() const throw();
      65             :   };
      66             : 
      67             : #if __cplusplus >= 201103L
      68             :   class bad_array_new_length : public bad_alloc
      69             :   {
      70             :   public:
      71             :     bad_array_new_length() throw() { };
      72             : 
      73             :     // This declaration is not useless:
      74             :     // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118
      75             :     virtual ~bad_array_new_length() throw();
      76             : 
      77             :     // See comment in eh_exception.cc.
      78             :     virtual const char* what() const throw();
      79             :   };
      80             : #endif
      81             : 
      82             :   // We throw this exception for GNU VLAs of negative length in all C++
      83             :   // dialects, so declare it if we aren't in strict conformance mode.
      84             : #if __cplusplus > 201103L || !defined(__STRICT_ANSI__)
      85             :   class bad_array_length : public bad_alloc
      86             :   {
      87             :   public:
      88             :     bad_array_length() throw() { };
      89             : 
      90             :     // This declaration is not useless:
      91             :     // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118
      92             :     virtual ~bad_array_length() throw();
      93             : 
      94             :     // See comment in eh_exception.cc.
      95             :     virtual const char* what() const throw();
      96             :   };
      97             : #endif
      98             : 
      99             :   struct nothrow_t { };
     100             : 
     101             :   extern const nothrow_t nothrow;
     102             : 
     103             :   /** If you write your own error handler to be called by @c new, it must
     104             :    *  be of this type.  */
     105             :   typedef void (*new_handler)();
     106             : 
     107             :   /// Takes a replacement handler as the argument, returns the
     108             :   /// previous handler.
     109             :   new_handler set_new_handler(new_handler) throw();
     110             : 
     111             : #if __cplusplus >= 201103L
     112             :   /// Return the current new handler.
     113             :   new_handler get_new_handler() noexcept;
     114             : #endif
     115             : } // namespace std
     116             : 
     117             : //@{
     118             : /** These are replaceable signatures:
     119             :  *  - normal single new and delete (no arguments, throw @c bad_alloc on error)
     120             :  *  - normal array new and delete (same)
     121             :  *  - @c nothrow single new and delete (take a @c nothrow argument, return
     122             :  *    @c NULL on error)
     123             :  *  - @c nothrow array new and delete (same)
     124             :  *
     125             :  *  Placement new and delete signatures (take a memory address argument,
     126             :  *  does nothing) may not be replaced by a user's program.
     127             : */
     128             : void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc)
     129             :   __attribute__((__externally_visible__));
     130             : void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc)
     131             :   __attribute__((__externally_visible__));
     132             : void operator delete(void*) _GLIBCXX_USE_NOEXCEPT
     133             :   __attribute__((__externally_visible__));
     134             : void operator delete[](void*) _GLIBCXX_USE_NOEXCEPT
     135             :   __attribute__((__externally_visible__));
     136             : void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
     137             :   __attribute__((__externally_visible__));
     138             : void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
     139             :   __attribute__((__externally_visible__));
     140             : void operator delete(void*, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
     141             :   __attribute__((__externally_visible__));
     142             : void operator delete[](void*, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
     143             :   __attribute__((__externally_visible__));
     144             : 
     145             : // Default placement versions of operator new.
     146         247 : inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
     147         247 : { return __p; }
     148             : inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
     149             : { return __p; }
     150             : 
     151             : // Default placement versions of operator delete.
     152           0 : inline void operator delete  (void*, void*) _GLIBCXX_USE_NOEXCEPT { }
     153             : inline void operator delete[](void*, void*) _GLIBCXX_USE_NOEXCEPT { }
     154             : //@}
     155             : } // extern "C++"
     156             : 
     157             : #pragma GCC visibility pop
     158             : 
     159             : #endif

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