1 files changed, 35 insertions, 0 deletions
diff --git a/psutil/arch/windows/mem.c b/psutil/arch/windows/mem.c
new file mode 100644
index 00000000..8b678254
--- /dev/null
+++ b/psutil/arch/windows/mem.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2009, Jay Loden, Giampaolo Rodola'. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <Python.h>
+#include <windows.h>
+#include <Psapi.h>
+
+#include "../../_psutil_common.h"
+
+
+PyObject *
+psutil_virtual_mem(PyObject *self, PyObject *args) {
+    unsigned long long totalPhys, availPhys, totalSys, availSys, pageSize;
+    PERFORMANCE_INFORMATION perfInfo;
+
+    if (! GetPerformanceInfo(&perfInfo, sizeof(PERFORMANCE_INFORMATION))) {
+        PyErr_SetFromWindowsErr(0);
+        return NULL;
+    }
+    // values are size_t, widen (if needed) to long long
+    pageSize = perfInfo.PageSize;
+    totalPhys = perfInfo.PhysicalTotal * pageSize;
+    availPhys = perfInfo.PhysicalAvailable * pageSize;
+    totalSys = perfInfo.CommitLimit * pageSize;
+    availSys = totalSys - perfInfo.CommitTotal * pageSize;
+    return Py_BuildValue(
+        "(LLLL)",
+        totalPhys,
+        availPhys,
+        totalSys,
+        availSys);
+}