diff --git a/libc/bionic/malloc_debug_disable.h b/libc/bionic/malloc_debug_disable.h
new file mode 100644
index 0000000..9503128
--- /dev/null
+++ b/libc/bionic/malloc_debug_disable.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "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 THE
+ * COPYRIGHT OWNER 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.
+ */
+
+#ifndef MALLOC_DEBUG_DISABLE_H
+#define MALLOC_DEBUG_DISABLE_H
+
+#include <pthread.h>
+
+#include "private/bionic_macros.h"
+
+// =============================================================================
+// Used to disable the debug allocation calls.
+// =============================================================================
+extern pthread_key_t g_debug_calls_disabled;
+
+static inline bool DebugCallsDisabled() {
+  return pthread_getspecific(g_debug_calls_disabled) != NULL;
+}
+
+class ScopedDisableDebugCalls {
+ public:
+  ScopedDisableDebugCalls() : disabled_(DebugCallsDisabled()) {
+    if (!disabled_) {
+      pthread_setspecific(g_debug_calls_disabled, reinterpret_cast<const void*>(1));
+    }
+  }
+  ~ScopedDisableDebugCalls() {
+    if (!disabled_) {
+      pthread_setspecific(g_debug_calls_disabled, NULL);
+    }
+  }
+
+ private:
+  bool disabled_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedDisableDebugCalls);
+};
+
+#endif  // MALLOC_DEBUG_DISABLE_H