1 files changed, 100 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/snippets/alloc-1.c b/src/VBox/ValidationKit/snippets/alloc-1.c
new file mode 100644
index 00000000..3f961963
--- /dev/null
+++ b/src/VBox/ValidationKit/snippets/alloc-1.c
@@ -0,0 +1,100 @@
+/* $Id: alloc-1.c $ */
+/** @file
+ * Allocate lots of memory, portable ANSI C code.
+ */
+
+/*
+ * Copyright (C) 2007-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <stdlib.h>
+#include <stdio.h>
+
+
+int main(int argc, char **argv)
+{
+    unsigned      uPct;
+    unsigned long cbDone;
+    unsigned long cMBs = 1024;
+    unsigned long cb;
+
+    /*
+     * Some quick and dirty argument parsing.
+     */
+    if (argc == 2)
+        cMBs = strtoul(argv[1], 0, 0);
+    if (!cMBs || argc > 2)
+    {
+        printf("usage: alloc-1 [MBs]\n");
+        return 1;
+    }
+    cb = cMBs * 1024 * 1024;
+    if (cb / (1024 * 1024) != cMBs)
+        cb = ~(unsigned long)0 / (1024 * 1024) * (1024 * 1024);
+    printf("alloc-1: allocating %lu MB (%lu bytes)\n", cb/1024/1024, cb);
+
+    /*
+     * The allocation loop.
+     */
+    printf("alloc-1: 0%%");
+    fflush(stdout);
+    cbDone = 0;
+    uPct = 0;
+    while (cbDone < cb)
+    {
+        unsigned      uPctNow;
+        unsigned long cbThis = cb > 10*1024*1024 ? 10*1024*1024 : cb;
+        char         *pb = malloc(cbThis);
+        if (!pb)
+        {
+            printf("\nalloc-1: calloc failed, cbDone=%lu MB (%lu bytes)\n",
+                   cbDone/1024/1024, cbDone);
+            return 1;
+        }
+        cbDone += cbThis;
+
+        /* touch the memory. */
+        while (cbThis >= 0x1000)
+        {
+            *pb = (char)cbThis;
+            pb += 0x1000;
+            cbThis -= 0x1000;
+        }
+
+        /* progress */
+        uPctNow = 100.0 * cbDone / cb;
+        if (uPctNow != uPct && !(uPctNow & 1))
+        {
+            if (!(uPctNow % 10))
+                printf("%u%%", uPctNow);
+            else
+                printf(".");
+            fflush(stdout);
+        }
+        uPct = uPctNow;
+    }
+
+    printf("\nalloc-1: done\n");
+    return 0;
+}