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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include <new>
#include <stdlib.h>
#include "include/atomic_support.h"
#if defined(_LIBCPP_ABI_MICROSOFT)
# if !defined(_LIBCPP_ABI_VCRUNTIME)
# include "support/runtime/new_handler_fallback.ipp"
# endif
#elif defined(LIBCXX_BUILDING_LIBCXXABI)
# include <cxxabi.h>
#elif defined(LIBCXX_BUILDING_LIBCXXRT)
# include <cxxabi.h>
# include "support/runtime/new_handler_fallback.ipp"
#elif defined(__GLIBCXX__)
// nothing to do
#else
# include "support/runtime/new_handler_fallback.ipp"
#endif
namespace std
{
#ifndef __GLIBCXX__
const nothrow_t nothrow{};
#endif
#ifndef LIBSTDCXX
void
__throw_bad_alloc()
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw bad_alloc();
#else
_VSTD::abort();
#endif
}
#endif // !LIBSTDCXX
} // std
#if !defined(__GLIBCXX__) && \
!defined(_LIBCPP_ABI_VCRUNTIME) && \
!defined(_LIBCPP_DISABLE_NEW_DELETE_DEFINITIONS)
// Implement all new and delete operators as weak definitions
// in this shared library, so that they can be overridden by programs
// that define non-weak copies of the functions.
_LIBCPP_WEAK
void *
operator new(std::size_t size) _THROW_BAD_ALLOC
{
if (size == 0)
size = 1;
void* p;
while ((p = ::malloc(size)) == nullptr)
{
// If malloc fails and there is a new_handler,
// call it to try free up memory.
std::new_handler nh = std::get_new_handler();
if (nh)
nh();
else
#ifndef _LIBCPP_NO_EXCEPTIONS
throw std::bad_alloc();
#else
#ifdef __EMSCRIPTEN__
// Abort here so that when exceptions are disabled, we do not just
// return 0 when malloc returns 0.
// We could also do this with set_new_handler, but that adds a
// global constructor and a table entry, overhead that we can avoid
// by doing it this way.
abort();
#else
break;
#endif
#endif
}
return p;
}
_LIBCPP_WEAK
void*
operator new(size_t size, const std::nothrow_t&) noexcept
{
void* p = nullptr;
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
p = ::operator new(size);
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
}
#endif // _LIBCPP_NO_EXCEPTIONS
return p;
}
_LIBCPP_WEAK
void*
operator new[](size_t size) _THROW_BAD_ALLOC
{
return ::operator new(size);
}
_LIBCPP_WEAK
void*
operator new[](size_t size, const std::nothrow_t&) noexcept
{
void* p = nullptr;
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
p = ::operator new[](size);
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
}
#endif // _LIBCPP_NO_EXCEPTIONS
return p;
}
_LIBCPP_WEAK
void
operator delete(void* ptr) noexcept
{
::free(ptr);
}
_LIBCPP_WEAK
void
operator delete(void* ptr, const std::nothrow_t&) noexcept
{
::operator delete(ptr);
}
_LIBCPP_WEAK
void
operator delete(void* ptr, size_t) noexcept
{
::operator delete(ptr);
}
_LIBCPP_WEAK
void
operator delete[] (void* ptr) noexcept
{
::operator delete(ptr);
}
_LIBCPP_WEAK
void
operator delete[] (void* ptr, const std::nothrow_t&) noexcept
{
::operator delete[](ptr);
}
_LIBCPP_WEAK
void
operator delete[] (void* ptr, size_t) noexcept
{
::operator delete[](ptr);
}
#if !defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION)
_LIBCPP_WEAK
void *
operator new(std::size_t size, std::align_val_t alignment) _THROW_BAD_ALLOC
{
if (size == 0)
size = 1;
if (static_cast<size_t>(alignment) < sizeof(void*))
alignment = std::align_val_t(sizeof(void*));
// Try allocating memory. If allocation fails and there is a new_handler,
// call it to try free up memory, and try again until it succeeds, or until
// the new_handler decides to terminate.
//
// If allocation fails and there is no new_handler, we throw bad_alloc
// (or return nullptr if exceptions are disabled).
void* p;
while ((p = std::__libcpp_aligned_alloc(static_cast<std::size_t>(alignment), size)) == nullptr)
{
std::new_handler nh = std::get_new_handler();
if (nh)
nh();
else {
#ifndef _LIBCPP_NO_EXCEPTIONS
throw std::bad_alloc();
#else
break;
#endif
}
}
return p;
}
_LIBCPP_WEAK
void*
operator new(size_t size, std::align_val_t alignment, const std::nothrow_t&) noexcept
{
void* p = nullptr;
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
p = ::operator new(size, alignment);
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
}
#endif // _LIBCPP_NO_EXCEPTIONS
return p;
}
_LIBCPP_WEAK
void*
operator new[](size_t size, std::align_val_t alignment) _THROW_BAD_ALLOC
{
return ::operator new(size, alignment);
}
_LIBCPP_WEAK
void*
operator new[](size_t size, std::align_val_t alignment, const std::nothrow_t&) noexcept
{
void* p = nullptr;
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
p = ::operator new[](size, alignment);
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
}
#endif // _LIBCPP_NO_EXCEPTIONS
return p;
}
_LIBCPP_WEAK
void
operator delete(void* ptr, std::align_val_t) noexcept
{
std::__libcpp_aligned_free(ptr);
}
_LIBCPP_WEAK
void
operator delete(void* ptr, std::align_val_t alignment, const std::nothrow_t&) noexcept
{
::operator delete(ptr, alignment);
}
_LIBCPP_WEAK
void
operator delete(void* ptr, size_t, std::align_val_t alignment) noexcept
{
::operator delete(ptr, alignment);
}
_LIBCPP_WEAK
void
operator delete[] (void* ptr, std::align_val_t alignment) noexcept
{
::operator delete(ptr, alignment);
}
_LIBCPP_WEAK
void
operator delete[] (void* ptr, std::align_val_t alignment, const std::nothrow_t&) noexcept
{
::operator delete[](ptr, alignment);
}
_LIBCPP_WEAK
void
operator delete[] (void* ptr, size_t, std::align_val_t alignment) noexcept
{
::operator delete[](ptr, alignment);
}
#endif // !_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION
#endif // !__GLIBCXX__ && !_LIBCPP_ABI_VCRUNTIME && !_LIBCPP_DISABLE_NEW_DELETE_DEFINITIONS
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