1 /* 2 * Copyright 2017 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef RTC_BASE_ZERO_MEMORY_H_ 12 #define RTC_BASE_ZERO_MEMORY_H_ 13 14 #include <stddef.h> 15 16 #include <type_traits> 17 18 #include "api/array_view.h" 19 20 namespace rtc { 21 22 // Fill memory with zeros in a way that the compiler doesn't optimize it away 23 // even if the pointer is not used afterwards. 24 void ExplicitZeroMemory(void* ptr, size_t len); 25 26 template <typename T, 27 typename std::enable_if<!std::is_const<T>::value && 28 std::is_trivial<T>::value>::type* = nullptr> ExplicitZeroMemory(rtc::ArrayView<T> a)29void ExplicitZeroMemory(rtc::ArrayView<T> a) { 30 ExplicitZeroMemory(a.data(), a.size()); 31 } 32 33 } // namespace rtc 34 35 #endif // RTC_BASE_ZERO_MEMORY_H_ 36