Initial commit for GitHub migration based on spice2x-25-03-03

src/spice2x/util/memutils.cpp

@@ -0,0 +1,73 @@
+#include "memutils.h"
+#include <psapi.h>
+#include "util/logging.h"
+
+
+namespace memutils {
+
+    inline static MEMORYSTATUSEX get_mem_status() {
+        MEMORYSTATUSEX mem_status{};
+        mem_status.dwLength = sizeof(MEMORYSTATUSEX);
+        GlobalMemoryStatusEx(&mem_status);
+        return mem_status;
+    }
+
+    inline static PROCESS_MEMORY_COUNTERS_EX get_mem_counters() {
+        PROCESS_MEMORY_COUNTERS_EX pmc{};
+        GetProcessMemoryInfo(GetCurrentProcess(), (PPROCESS_MEMORY_COUNTERS) &pmc, sizeof(pmc));
+        return pmc;
+    }
+
+    DWORDLONG mem_total() {
+        return get_mem_status().ullTotalPhys;
+    }
+
+    DWORDLONG mem_total_used() {
+        auto status = get_mem_status();
+        return status.ullTotalPhys - status.ullAvailPhys;
+    }
+
+    DWORDLONG mem_used() {
+        return get_mem_counters().WorkingSetSize;
+    }
+
+    DWORDLONG vmem_total() {
+        return get_mem_status().ullTotalPageFile;
+    }
+
+    DWORDLONG vmem_total_used() {
+        auto status = get_mem_status();
+        return status.ullTotalPageFile - status.ullAvailPageFile;
+    }
+
+    DWORDLONG vmem_used() {
+        return get_mem_counters().PrivateUsage;
+    }
+
+    VProtectGuard::VProtectGuard(void *addr, size_t size, DWORD mode, bool reset)
+        : addr(addr), reset(reset), size(size)
+    {
+        if (!VirtualProtect(this->addr, this->size, mode, &this->old_protect)) {
+            auto error = GetLastError();
+            log_warning("memutils", "VirtualProtect failed: {}", error);
+
+            if (error == ERROR_INVALID_ADDRESS) {
+                this->bad_address = true;
+            }
+        }
+    }
+
+    VProtectGuard::~VProtectGuard() {
+        this->dispose();
+    }
+
+    void VProtectGuard::dispose() {
+        if (this->reset && this->addr != nullptr) {
+            DWORD tmp;
+            if (!VirtualProtect(this->addr, this->size, this->old_protect, &tmp)) {
+                log_warning("memutils", "VirtualProtect failed: {}", GetLastError());
+            }
+            this->addr = nullptr;
+        }
+    }
+}