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Diffstat (limited to 'gdb/common/default-init-alloc.h')
-rw-r--r-- | gdb/common/default-init-alloc.h | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/gdb/common/default-init-alloc.h b/gdb/common/default-init-alloc.h deleted file mode 100644 index 2d739c9..0000000 --- a/gdb/common/default-init-alloc.h +++ /dev/null @@ -1,67 +0,0 @@ -/* Copyright (C) 2017-2019 Free Software Foundation, Inc. - - This file is part of GDB. - - This program 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 of the License, or - (at your option) any later version. - - 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. */ - -#ifndef COMMON_DEFAULT_INIT_ALLOC_H -#define COMMON_DEFAULT_INIT_ALLOC_H - -namespace gdb { - -/* An allocator that default constructs using default-initialization - rather than value-initialization. The idea is to use this when you - don't want to default construct elements of containers of trivial - types using zero-initialization. */ - -/* Mostly as implementation convenience, this is implemented as an - adapter that given an allocator A, overrides 'A::construct()'. 'A' - defaults to std::allocator<T>. */ - -template<typename T, typename A = std::allocator<T>> -class default_init_allocator : public A -{ -public: - /* Pull in A's ctors. */ - using A::A; - - /* Override rebind. */ - template<typename U> - struct rebind - { - /* A couple helpers just to make it a bit more readable. */ - typedef std::allocator_traits<A> traits_; - typedef typename traits_::template rebind_alloc<U> alloc_; - - /* This is what we're after. */ - typedef default_init_allocator<U, alloc_> other; - }; - - /* Make the base allocator's construct method(s) visible. */ - using A::construct; - - /* .. and provide an override/overload for the case of default - construction (i.e., no arguments). This is where we construct - with default-init. */ - template <typename U> - void construct (U *ptr) - noexcept (std::is_nothrow_default_constructible<U>::value) - { - ::new ((void *) ptr) U; /* default-init */ - } -}; - -} /* namespace gdb */ - -#endif /* COMMON_DEFAULT_INIT_ALLOC_H */ |