--- /dev/null
+++ libmalloc/libmalloc-374.60.3/tests/MallocBenchTest/MALLOC_BENCH/MallocBench/CPUCount.cpp
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2014 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "CPUCount.h"
+#include <stdlib.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+static size_t count;
+
+size_t cpuCount()
+{
+    if (count)
+        return count;
+
+#ifdef __APPLE__
+    size_t length = sizeof(count);
+    int name[] = {
+            CTL_HW,
+            HW_NCPU
+    };
+    int sysctlResult = sysctl(name, sizeof(name) / sizeof(int), &count, &length, 0, 0);
+    if (sysctlResult < 0)
+        abort();
+#else
+    long sysconfResult = sysconf(_SC_NPROCESSORS_ONLN);
+    if (sysconfResult < 0)
+        abort();
+    count = sysconfResult;
+#endif
+
+    return count;
+}