Port UMA part 5.2

src/common/memory_detect.cpp

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -20,10 +17,6 @@
 #endif
 #endif
 
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-
 #include "common/memory_detect.h"
 
 namespace Common {
@@ -76,61 +69,4 @@ const MemoryInfo& GetMemInfo() {
     return mem_info;
 }
 
-u64 GetPermissibleMapCount() {
-    constexpr u64 DefaultMapCount = 65530;
-    constexpr u64 ReservedMaps = 20000;
-    u64 count = DefaultMapCount;
-#ifdef __linux__
-    if (std::FILE* const file = std::fopen("/proc/sys/vm/max_map_count", "re")) {
-        char line[32];
-        if (std::fgets(line, sizeof(line), file) != nullptr) {
-            const u64 parsed = std::strtoull(line, nullptr, 10);
-            if (parsed != 0) {
-                count = parsed;
-            }
-        }
-        std::fclose(file);
-    }
-#endif
-    if (count <= ReservedMaps) {
-        return 0;
-    }
-    return count - ReservedMaps;
-}
-
-u64 GetAvailablePhysicalMemory() {
-#ifdef _WIN32
-    MEMORYSTATUSEX memorystatus;
-    memorystatus.dwLength = sizeof(memorystatus);
-    if (GlobalMemoryStatusEx(&memorystatus) == 0) {
-        return 0;
-    }
-    return memorystatus.ullAvailPhys;
-#elif defined(__linux__)
-    static constexpr char AvailableKey[] = "MemAvailable:";
-    if (std::FILE* const file = std::fopen("/proc/meminfo", "re")) {
-        char line[256];
-        u64 available = 0;
-        while (std::fgets(line, sizeof(line), file) != nullptr) {
-            if (std::strncmp(line, AvailableKey, sizeof(AvailableKey) - 1) != 0) {
-                continue;
-            }
-            available = std::strtoull(line + sizeof(AvailableKey) - 1, nullptr, 10) * 1024;
-            break;
-        }
-        std::fclose(file);
-        if (available != 0) {
-            return available;
-        }
-    }
-    struct sysinfo meminfo;
-    if (sysinfo(&meminfo) != 0) {
-        return 0;
-    }
-    return static_cast<u64>(meminfo.freeram) * static_cast<u64>(meminfo.mem_unit);
-#else
-    return 0;
-#endif
-}
-
 } // namespace Common