c3656afdf1
This reverts commit c861fe8a71e64f3d2108c58147e7375cd9314521. Unfortunately, this use of hidden visibility attributes causes user-defined specializations of standard-library types to also be marked hidden by default, which is incorrect. See discussion thread on #131156. ...and also reverts the follow-up commits: Revert "[libc++] Add explicit ABI annotations to functions from the block runtime declared in <__functional/function.h> (#140592)" This reverts commit 3e4c9dc299c35155934688184319d391b298fff7. Revert "[libc++] Make ABI annotations explicit for windows-specific code (#140507)" This reverts commit f73287e623a6c2e4a3485832bc3e10860cd26eb5. Revert "[libc++][NFC] Replace a few "namespace std" with the correct macro (#140510)" This reverts commit 1d411f27c769a32cb22ce50b9dc4421e34fd40dd.
107 lines
3.6 KiB
C++
107 lines
3.6 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef _LIBCPP___MEMORY_RESOURCE_UNSYNCHRONIZED_POOL_RESOURCE_H
|
|
#define _LIBCPP___MEMORY_RESOURCE_UNSYNCHRONIZED_POOL_RESOURCE_H
|
|
|
|
#include <__config>
|
|
#include <__cstddef/size_t.h>
|
|
#include <__memory_resource/memory_resource.h>
|
|
#include <__memory_resource/pool_options.h>
|
|
#include <cstdint>
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
# pragma GCC system_header
|
|
#endif
|
|
|
|
#if _LIBCPP_STD_VER >= 17
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
namespace pmr {
|
|
|
|
// [mem.res.pool.overview]
|
|
|
|
class _LIBCPP_AVAILABILITY_PMR _LIBCPP_EXPORTED_FROM_ABI unsynchronized_pool_resource : public memory_resource {
|
|
class __fixed_pool;
|
|
|
|
class __adhoc_pool {
|
|
struct __chunk_footer;
|
|
__chunk_footer* __first_;
|
|
|
|
public:
|
|
_LIBCPP_HIDE_FROM_ABI explicit __adhoc_pool() : __first_(nullptr) {}
|
|
|
|
void __release_ptr(memory_resource* __upstream);
|
|
void* __do_allocate(memory_resource* __upstream, size_t __bytes, size_t __align);
|
|
void __do_deallocate(memory_resource* __upstream, void* __p, size_t __bytes, size_t __align);
|
|
};
|
|
|
|
static const size_t __min_blocks_per_chunk = 16;
|
|
static const size_t __min_bytes_per_chunk = 1024;
|
|
static const size_t __max_blocks_per_chunk = (size_t(1) << 20);
|
|
static const size_t __max_bytes_per_chunk = (size_t(1) << 30);
|
|
|
|
static const int __log2_smallest_block_size = 3;
|
|
static const size_t __smallest_block_size = 8;
|
|
static const size_t __default_largest_block_size = (size_t(1) << 20);
|
|
static const size_t __max_largest_block_size = (size_t(1) << 30);
|
|
|
|
size_t __pool_block_size(int __i) const;
|
|
int __log2_pool_block_size(int __i) const;
|
|
int __pool_index(size_t __bytes, size_t __align) const;
|
|
|
|
public:
|
|
unsynchronized_pool_resource(const pool_options& __opts, memory_resource* __upstream);
|
|
|
|
_LIBCPP_HIDE_FROM_ABI unsynchronized_pool_resource()
|
|
: unsynchronized_pool_resource(pool_options(), get_default_resource()) {}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI explicit unsynchronized_pool_resource(memory_resource* __upstream)
|
|
: unsynchronized_pool_resource(pool_options(), __upstream) {}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI explicit unsynchronized_pool_resource(const pool_options& __opts)
|
|
: unsynchronized_pool_resource(__opts, get_default_resource()) {}
|
|
|
|
unsynchronized_pool_resource(const unsynchronized_pool_resource&) = delete;
|
|
|
|
_LIBCPP_HIDE_FROM_ABI_VIRTUAL ~unsynchronized_pool_resource() override { release(); }
|
|
|
|
unsynchronized_pool_resource& operator=(const unsynchronized_pool_resource&) = delete;
|
|
|
|
void release();
|
|
|
|
_LIBCPP_HIDE_FROM_ABI memory_resource* upstream_resource() const { return __res_; }
|
|
|
|
[[__gnu__::__pure__]] pool_options options() const;
|
|
|
|
protected:
|
|
void* do_allocate(size_t __bytes, size_t __align) override; // key function
|
|
|
|
void do_deallocate(void* __p, size_t __bytes, size_t __align) override;
|
|
|
|
_LIBCPP_HIDE_FROM_ABI_VIRTUAL bool do_is_equal(const memory_resource& __other) const _NOEXCEPT override {
|
|
return &__other == this;
|
|
}
|
|
|
|
private:
|
|
memory_resource* __res_;
|
|
__adhoc_pool __adhoc_pool_;
|
|
__fixed_pool* __fixed_pools_;
|
|
int __num_fixed_pools_;
|
|
uint32_t __options_max_blocks_per_chunk_;
|
|
};
|
|
|
|
} // namespace pmr
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP_STD_VER >= 17
|
|
|
|
#endif // _LIBCPP___MEMORY_RESOURCE_UNSYNCHRONIZED_POOL_RESOURCE_H
|