common: Remove memory_util.cpp/.h

Everything from here is completely unused and also written with the
notion of supporting 32-bit architecture variants in mind. Given the
Switch itself is on a 64-bit architecture, we won't be supporting 32-bit
architectures. If we need specific allocation functions in the future,
it's likely more worthwhile to new functions for that purpose.

src/common/CMakeLists.txt

@@ -64,8 +64,6 @@ add_library(common STATIC
     logging/text_formatter.cpp
     logging/text_formatter.h
     math_util.h
-    memory_util.cpp
-    memory_util.h
     microprofile.cpp
     microprofile.h
     microprofileui.h

src/common/memory_util.cpp

@@ -1,177 +0,0 @@
-// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include "common/logging/log.h"
-#include "common/memory_util.h"
-
-#ifdef _WIN32
-#include <windows.h>
-// Windows.h needs to be included before psapi.h
-#include <psapi.h>
-#include "common/common_funcs.h"
-#include "common/string_util.h"
-#else
-#include <cstdlib>
-#include <sys/mman.h>
-#endif
-
-#if !defined(_WIN32) && defined(ARCHITECTURE_x86_64) && !defined(MAP_32BIT)
-#include <unistd.h>
-#define PAGE_MASK (getpagesize() - 1)
-#define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK))
-#endif
-
-// This is purposely not a full wrapper for virtualalloc/mmap, but it
-// provides exactly the primitive operations that Dolphin needs.
-
-void* AllocateExecutableMemory(std::size_t size, bool low) {
-#if defined(_WIN32)
-    void* ptr = VirtualAlloc(nullptr, size, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
-#else
-    static char* map_hint = nullptr;
-#if defined(ARCHITECTURE_x86_64) && !defined(MAP_32BIT)
-    // This OS has no flag to enforce allocation below the 4 GB boundary,
-    // but if we hint that we want a low address it is very likely we will
-    // get one.
-    // An older version of this code used MAP_FIXED, but that has the side
-    // effect of discarding already mapped pages that happen to be in the
-    // requested virtual memory range (such as the emulated RAM, sometimes).
-    if (low && (!map_hint))
-        map_hint = (char*)round_page(512 * 1024 * 1024); /* 0.5 GB rounded up to the next page */
-#endif
-    void* ptr = mmap(map_hint, size, PROT_READ | PROT_WRITE | PROT_EXEC,
-                     MAP_ANON | MAP_PRIVATE
-#if defined(ARCHITECTURE_x86_64) && defined(MAP_32BIT)
-                         | (low ? MAP_32BIT : 0)
-#endif
-                         ,
-                     -1, 0);
-#endif /* defined(_WIN32) */
-
-#ifdef _WIN32
-    if (ptr == nullptr) {
-#else
-    if (ptr == MAP_FAILED) {
-        ptr = nullptr;
-#endif
-        LOG_ERROR(Common_Memory, "Failed to allocate executable memory");
-    }
-#if !defined(_WIN32) && defined(ARCHITECTURE_x86_64) && !defined(MAP_32BIT)
-    else {
-        if (low) {
-            map_hint += size;
-            map_hint = (char*)round_page(map_hint); /* round up to the next page */
-        }
-    }
-#endif
-
-#if EMU_ARCH_BITS == 64
-    if ((u64)ptr >= 0x80000000 && low == true)
-        LOG_ERROR(Common_Memory, "Executable memory ended up above 2GB!");
-#endif
-
-    return ptr;
-}
-
-void* AllocateMemoryPages(std::size_t size) {
-#ifdef _WIN32
-    void* ptr = VirtualAlloc(nullptr, size, MEM_COMMIT, PAGE_READWRITE);
-#else
-    void* ptr = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
-
-    if (ptr == MAP_FAILED)
-        ptr = nullptr;
-#endif
-
-    if (ptr == nullptr)
-        LOG_ERROR(Common_Memory, "Failed to allocate raw memory");
-
-    return ptr;
-}
-
-void* AllocateAlignedMemory(std::size_t size, std::size_t alignment) {
-#ifdef _WIN32
-    void* ptr = _aligned_malloc(size, alignment);
-#else
-    void* ptr = nullptr;
-#ifdef ANDROID
-    ptr = memalign(alignment, size);
-#else
-    if (posix_memalign(&ptr, alignment, size) != 0)
-        LOG_ERROR(Common_Memory, "Failed to allocate aligned memory");
-#endif
-#endif
-
-    if (ptr == nullptr)
-        LOG_ERROR(Common_Memory, "Failed to allocate aligned memory");
-
-    return ptr;
-}
-
-void FreeMemoryPages(void* ptr, std::size_t size) {
-    if (ptr) {
-#ifdef _WIN32
-        if (!VirtualFree(ptr, 0, MEM_RELEASE))
-            LOG_ERROR(Common_Memory, "FreeMemoryPages failed!\n{}", GetLastErrorMsg());
-#else
-        munmap(ptr, size);
-#endif
-    }
-}
-
-void FreeAlignedMemory(void* ptr) {
-    if (ptr) {
-#ifdef _WIN32
-        _aligned_free(ptr);
-#else
-        free(ptr);
-#endif
-    }
-}
-
-void WriteProtectMemory(void* ptr, std::size_t size, bool allowExecute) {
-#ifdef _WIN32
-    DWORD oldValue;
-    if (!VirtualProtect(ptr, size, allowExecute ? PAGE_EXECUTE_READ : PAGE_READONLY, &oldValue))
-        LOG_ERROR(Common_Memory, "WriteProtectMemory failed!\n{}", GetLastErrorMsg());
-#else
-    mprotect(ptr, size, allowExecute ? (PROT_READ | PROT_EXEC) : PROT_READ);
-#endif
-}
-
-void UnWriteProtectMemory(void* ptr, std::size_t size, bool allowExecute) {
-#ifdef _WIN32
-    DWORD oldValue;
-    if (!VirtualProtect(ptr, size, allowExecute ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE,
-                        &oldValue))
-        LOG_ERROR(Common_Memory, "UnWriteProtectMemory failed!\n{}", GetLastErrorMsg());
-#else
-    mprotect(ptr, size,
-             allowExecute ? (PROT_READ | PROT_WRITE | PROT_EXEC) : PROT_WRITE | PROT_READ);
-#endif
-}
-
-std::string MemUsage() {
-#ifdef _WIN32
-#pragma comment(lib, "psapi")
-    DWORD processID = GetCurrentProcessId();
-    HANDLE hProcess;
-    PROCESS_MEMORY_COUNTERS pmc;
-    std::string Ret;
-
-    // Print information about the memory usage of the process.
-
-    hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, processID);
-    if (nullptr == hProcess)
-        return "MemUsage Error";
-
-    if (GetProcessMemoryInfo(hProcess, &pmc, sizeof(pmc)))
-        Ret = fmt::format("{} K", Common::ThousandSeparate(pmc.WorkingSetSize / 1024, 7));
-
-    CloseHandle(hProcess);
-    return Ret;
-#else
-    return "";
-#endif
-}

src/common/memory_util.h

@@ -1,21 +0,0 @@
-// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <cstddef>
-#include <string>
-
-void* AllocateExecutableMemory(std::size_t size, bool low = true);
-void* AllocateMemoryPages(std::size_t size);
-void FreeMemoryPages(void* ptr, std::size_t size);
-void* AllocateAlignedMemory(std::size_t size, std::size_t alignment);
-void FreeAlignedMemory(void* ptr);
-void WriteProtectMemory(void* ptr, std::size_t size, bool executable = false);
-void UnWriteProtectMemory(void* ptr, std::size_t size, bool allowExecute = false);
-std::string MemUsage();
-
-inline int GetPageSize() {
-    return 4096;
-}