Reverse engineered HWiNFO shared memory format

hwinfosharedmem.h

#pragma once
// HWiNFOSharedMem - Reverse engineered HWiNFO shared memory format
// Copyright (C) 2020  namazso
// 
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//
//
// Unfortunately the real HWiNFO interface headers are under some proprietary license, so this is a reimplementation
// based on me looking at the shared section with ReClass and comparing it to "HWiNFO Shared Memory Viewer"

#define HWiNFO_SHARED_MEM_PATH    "Global\\HWiNFO_SENS_SM2"
#define HWiNFO_SHARED_MEM_MUTEX   "Global\\HWiNFO_SM2_MUTEX"
#define HWiNFO_HEADER_MAGIC       ((uint32_t)'SiWH')

#define PACKED_STRUCT(...) __pragma(pack(push, 1)) __VA_ARGS__  __pragma(pack(pop))

PACKED_STRUCT(struct HWiNFOHeader
{
  /* 0x0000 */ uint32_t magic;                   // must be HWiNFO_HEADER_MAGIC
  /* 0x0004 */ uint32_t version;                 // 1 as of 6.40-4330
  /* 0x0008 */ uint32_t version2;                // 1 as of 6.40-4330
  /* 0x000C */ int64_t  last_update;             // unix timestamp
  /* 0x0014 */ uint32_t sensor_section_offset;
  /* 0x0018 */ uint32_t sensor_element_size;
  /* 0x001C */ uint32_t sensor_element_count;
  /* 0x0020 */ uint32_t entry_section_offset;
  /* 0x0024 */ uint32_t entry_element_size;
  /* 0x0028 */ uint32_t entry_element_count;
});

PACKED_STRUCT(struct HWiNFOSensor
{
  /* 0x0000 */ uint32_t id;
  /* 0x0004 */ uint32_t instance;
  /* 0x0008 */ char name_original[128];
  /* 0x0088 */ char name_user[128];
});

enum class SensorType : uint32_t
{
  None,
  Temperature,
  Voltage,
  Fan,
  Current,
  Power,
  Clock,
  Usage,
  Other,
};

PACKED_STRUCT(struct HWiNFOEntry
{
  /* 0x0000 */ SensorType type;
  /* 0x0004 */ uint32_t sensor_index; // !!! not id, this is an index into the other array
  /* 0x0008 */ uint32_t id;
  /* 0x000C */ char name_original[128];
  /* 0x008C */ char name_user[128];
  /* 0x010C */ char unit[16];
  /* 0x011C */ double value;
  /* 0x0124 */ double value_min;
  /* 0x012C */ double value_max;
  /* 0x0134 */ double value_avg;
});

what did you use that for, if i may ask?

@illnyang didn't end up using it for anything. I had plans for a software, but Win11 removed support for an API I needed