135 lines
3.0 KiB
C++
135 lines
3.0 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2015 Danny Robson <danny@nerdcruft.net>
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*/
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#include "null.hpp"
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#include "../../debug.hpp"
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#include <new>
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using util::alloc::raw::null;
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///////////////////////////////////////////////////////////////////////////////
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void*
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null::allocate (size_t bytes)
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{
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return allocate (bytes, alignof (std::max_align_t));
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}
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//-----------------------------------------------------------------------------
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void*
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null::allocate (size_t bytes, size_t align)
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{
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(void)bytes;
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(void)align;
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throw std::bad_alloc ();
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}
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//-----------------------------------------------------------------------------
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void
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null::deallocate (void *ptr, size_t bytes)
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{
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return deallocate (ptr, bytes, alignof (std::max_align_t));
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}
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//-----------------------------------------------------------------------------
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// calling deallocate with a non-null pointer is undefined, but we may as well
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// let the application continuing running if we're not in a debug context.
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void
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null::deallocate (void *ptr, size_t bytes, size_t align)
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{
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(void)ptr;
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(void)bytes;
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(void)align;
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// cast to void* to assist some of the printing machinery in the assertion
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CHECK_EQ (ptr, static_cast<const void*> (nullptr));
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}
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///////////////////////////////////////////////////////////////////////////////
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std::byte*
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null::begin (void)
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{
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return nullptr;
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}
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//-----------------------------------------------------------------------------
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const std::byte*
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null::begin (void) const
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{
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return nullptr;
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}
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//-----------------------------------------------------------------------------
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std::byte*
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null::end (void)
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{ return nullptr; }
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//-----------------------------------------------------------------------------
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const std::byte*
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null::end (void) const
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{ return nullptr; }
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//-----------------------------------------------------------------------------
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size_t
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null::offset (const void *ptr) const
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{
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return reinterpret_cast<uintptr_t> (ptr);
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}
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///////////////////////////////////////////////////////////////////////////////
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void
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null::reset (void)
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{
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;
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}
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///////////////////////////////////////////////////////////////////////////////
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size_t
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null::capacity (void) const
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{
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return 0;
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}
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//-----------------------------------------------------------------------------
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size_t
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null::used (void) const
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{
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return 0;
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}
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//-----------------------------------------------------------------------------
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size_t
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null::remain (void) const
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{
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return 0;
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}
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