mirror of
https://github.com/matrix-construct/construct
synced 2024-12-30 17:34:04 +01:00
109 lines
2.8 KiB
C++
109 lines
2.8 KiB
C++
// The Construct
|
|
//
|
|
// Copyright (C) The Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2020 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_IOS_DESCRIPTOR_H
|
|
|
|
namespace ircd::ios
|
|
{
|
|
struct handler;
|
|
struct descriptor;
|
|
|
|
const string_view &name(const descriptor &);
|
|
}
|
|
|
|
/// Each descriptor classifies and quantifies our operations through asio.
|
|
/// Instances are usually static; all callback handlers are wrapped with an
|
|
/// ios::handle and associated with an ios::descriptor instance.
|
|
struct ircd::ios::descriptor
|
|
:instance_list<descriptor>
|
|
{
|
|
struct stats;
|
|
|
|
static uint64_t ids;
|
|
|
|
static void *default_allocator(handler &, const size_t &);
|
|
static void default_deallocator(handler &, void *const &, const size_t &) noexcept;
|
|
|
|
string_view name;
|
|
uint64_t id {++ids};
|
|
std::unique_ptr<struct stats> stats;
|
|
void *(*allocator)(handler &, const size_t &);
|
|
void (*deallocator)(handler &, void *const &, const size_t &);
|
|
std::vector<std::array<uint64_t, 2>> history; // epoch, cycles
|
|
uint8_t history_pos {0};
|
|
bool continuation {false};
|
|
|
|
descriptor(const string_view &name,
|
|
const decltype(allocator) & = default_allocator,
|
|
const decltype(deallocator) & = default_deallocator,
|
|
const bool &continuation = false) noexcept;
|
|
|
|
descriptor(descriptor &&) = delete;
|
|
descriptor(const descriptor &) = delete;
|
|
~descriptor() noexcept;
|
|
};
|
|
|
|
/// Statistics for the descriptor.
|
|
struct ircd::ios::descriptor::stats
|
|
{
|
|
using value_type = uint64_t;
|
|
using item = ircd::stats::item<value_type *>;
|
|
|
|
value_type value[11];
|
|
size_t items;
|
|
|
|
public:
|
|
item queued;
|
|
item calls;
|
|
item faults;
|
|
item allocs;
|
|
item alloc_bytes;
|
|
item frees;
|
|
item free_bytes;
|
|
item slice_total;
|
|
item slice_last;
|
|
item latency_total;
|
|
item latency_last;
|
|
|
|
stats(descriptor &);
|
|
stats() = delete;
|
|
stats(const stats &) = delete;
|
|
stats &operator=(const stats &) = delete;
|
|
~stats() noexcept;
|
|
};
|
|
|
|
[[gnu::hot]]
|
|
inline void
|
|
ircd::ios::descriptor::default_deallocator(handler &handler,
|
|
void *const &ptr,
|
|
const size_t &size)
|
|
noexcept
|
|
{
|
|
#ifdef __clang__
|
|
::operator delete(ptr);
|
|
#else
|
|
::operator delete(ptr, size);
|
|
#endif
|
|
}
|
|
|
|
[[gnu::hot]]
|
|
inline void *
|
|
ircd::ios::descriptor::default_allocator(handler &handler,
|
|
const size_t &size)
|
|
{
|
|
return ::operator new(size);
|
|
}
|
|
|
|
inline const ircd::string_view &
|
|
ircd::ios::name(const descriptor &descriptor)
|
|
{
|
|
return descriptor.name;
|
|
}
|