stack_allocator_pool.h

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// Copyright 2023 owent
 
#pragma once
 
#include <libcopp/utils/config/libcopp_build_features.h>
 
#include <libcopp/utils/features.h>
 
#include <assert.h>
#include <cstddef>
#include <memory>
 
#ifdef COPP_HAS_ABI_HEADERS
#  include COPP_ABI_PREFIX
#endif
 
LIBCOPP_COPP_NAMESPACE_BEGIN
struct stack_context;
 
namespace allocator {
 
template <typename TPool>
class LIBCOPP_COPP_API_HEAD_ONLY stack_allocator_pool {
 public:
  using pool_type = TPool;
 
  // Compability with libcopp-1.x
  using pool_t = pool_type;
 
 public:
  stack_allocator_pool() LIBCOPP_MACRO_NOEXCEPT {}
  stack_allocator_pool(const std::shared_ptr<pool_type> &p) LIBCOPP_MACRO_NOEXCEPT : pool_(p) {}
  ~stack_allocator_pool() {}
 
  void attach(const std::shared_ptr<pool_type> &p) LIBCOPP_MACRO_NOEXCEPT { pool_ = p; }
 
  void allocate(stack_context &ctx, std::size_t) LIBCOPP_MACRO_NOEXCEPT {
    assert(pool_);
    if (pool_) {
      pool_->allocate(ctx);
    }
  }
 
  void deallocate(stack_context &ctx) LIBCOPP_MACRO_NOEXCEPT {
    assert(pool_);
    if (pool_) {
      pool_->deallocate(ctx);
    }
  }
 
 private:
  std::shared_ptr<pool_type> pool_;
};
}  // namespace allocator
LIBCOPP_COPP_NAMESPACE_END
 
#ifdef COPP_HAS_ABI_HEADERS
#  include COPP_ABI_SUFFIX
#endif