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authorBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
committerBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/libstdc++-v3/libsupc++/new
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
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Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/libstdc++-v3/libsupc++/new')
-rw-r--r--gcc-4.9/libstdc++-v3/libsupc++/new159
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diff --git a/gcc-4.9/libstdc++-v3/libsupc++/new b/gcc-4.9/libstdc++-v3/libsupc++/new
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+// The -*- C++ -*- dynamic memory management header.
+
+// Copyright (C) 1994-2014 Free Software Foundation, Inc.
+
+// 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 new
+ * This is a Standard C++ Library header.
+ *
+ * The header @c new defines several functions to manage dynamic memory and
+ * handling memory allocation errors; see
+ * http://gcc.gnu.org/onlinedocs/libstdc++/18_support/howto.html#4 for more.
+ */
+
+#ifndef _NEW
+#define _NEW
+
+#pragma GCC system_header
+
+#include <bits/c++config.h>
+#include <exception>
+
+#pragma GCC visibility push(default)
+
+extern "C++" {
+
+namespace std
+{
+ /**
+ * @brief Exception possibly thrown by @c new.
+ * @ingroup exceptions
+ *
+ * @c bad_alloc (or classes derived from it) is used to report allocation
+ * errors from the throwing forms of @c new. */
+ class bad_alloc : public exception
+ {
+ public:
+ bad_alloc() throw() { }
+
+ // This declaration is not useless:
+ // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118
+ virtual ~bad_alloc() throw();
+
+ // See comment in eh_exception.cc.
+ virtual const char* what() const throw();
+ };
+
+#if __cplusplus >= 201103L
+ class bad_array_new_length : public bad_alloc
+ {
+ public:
+ bad_array_new_length() throw() { };
+
+ // This declaration is not useless:
+ // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118
+ virtual ~bad_array_new_length() throw();
+
+ // See comment in eh_exception.cc.
+ virtual const char* what() const throw();
+ };
+#endif
+
+ // We throw this exception for GNU VLAs of negative length in all C++
+ // dialects, so declare it if we aren't in strict conformance mode.
+#if __cplusplus > 201103L || !defined(__STRICT_ANSI__)
+ class bad_array_length : public bad_alloc
+ {
+ public:
+ bad_array_length() throw() { };
+
+ // This declaration is not useless:
+ // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118
+ virtual ~bad_array_length() throw();
+
+ // See comment in eh_exception.cc.
+ virtual const char* what() const throw();
+ };
+#endif
+
+ struct nothrow_t { };
+
+ extern const nothrow_t nothrow;
+
+ /** If you write your own error handler to be called by @c new, it must
+ * be of this type. */
+ typedef void (*new_handler)();
+
+ /// Takes a replacement handler as the argument, returns the
+ /// previous handler.
+ new_handler set_new_handler(new_handler) throw();
+
+#if __cplusplus >= 201103L
+ /// Return the current new handler.
+ new_handler get_new_handler() noexcept;
+#endif
+} // namespace std
+
+//@{
+/** These are replaceable signatures:
+ * - normal single new and delete (no arguments, throw @c bad_alloc on error)
+ * - normal array new and delete (same)
+ * - @c nothrow single new and delete (take a @c nothrow argument, return
+ * @c NULL on error)
+ * - @c nothrow array new and delete (same)
+ *
+ * Placement new and delete signatures (take a memory address argument,
+ * does nothing) may not be replaced by a user's program.
+*/
+void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc)
+ __attribute__((__externally_visible__));
+void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc)
+ __attribute__((__externally_visible__));
+void operator delete(void*) _GLIBCXX_USE_NOEXCEPT
+ __attribute__((__externally_visible__));
+void operator delete[](void*) _GLIBCXX_USE_NOEXCEPT
+ __attribute__((__externally_visible__));
+void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
+ __attribute__((__externally_visible__));
+void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
+ __attribute__((__externally_visible__));
+void operator delete(void*, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
+ __attribute__((__externally_visible__));
+void operator delete[](void*, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
+ __attribute__((__externally_visible__));
+
+// Default placement versions of operator new.
+inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
+{ return __p; }
+inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
+{ return __p; }
+
+// Default placement versions of operator delete.
+inline void operator delete (void*, void*) _GLIBCXX_USE_NOEXCEPT { }
+inline void operator delete[](void*, void*) _GLIBCXX_USE_NOEXCEPT { }
+//@}
+} // extern "C++"
+
+#pragma GCC visibility pop
+
+#endif