webrtc/rtc_base/zero_memory.cc
Philipp Hancke b2ea936d33 Modernize deprecated headers in api/, pc/ and rtc_base/
Done using
  tools/clang/scripts/build_clang_tools_extra.py \
    --fetch out/Default clang-tidy clang-apply-replacements
  ninja -C out/Default
  gn gen out/Default --export-compile-commands
  cd out/Default
  tools/clang/third_party/llvm/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py -p . \
    -clang-tidy-binary out/Default/tools/clang/third_party/llvm/build/bin/clang-tidy \
    -clang-apply-replacements-binary \
        out/Default/tools/clang/third_party/llvm/build/bin/clang-apply-replacements \
    -checks='-*,modernize-deprecated-headers' \
    -fix api/ pc/ rtc_base/
followed by
  git cl format
and a round of IWYU followed by more git cl format

Bug: webrtc:424706384
Change-Id: I8add6fe713fba9d6ef4cc3783bdb7e7f975aaa0a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/400921
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Commit-Queue: Philipp Hancke <phancke@meta.com>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#45182}
2025-07-21 00:02:35 -07:00

39 lines
1.1 KiB
C++

/*
* Copyright 2017 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#if defined(WEBRTC_WIN)
#include <windows.h>
#else
#include <cstring>
#endif
#include "rtc_base/checks.h"
#include "rtc_base/zero_memory.h"
namespace webrtc {
// Code and comment taken from "OPENSSL_cleanse" of BoringSSL.
void ExplicitZeroMemory(void* ptr, size_t len) {
RTC_DCHECK(ptr || !len);
#if defined(WEBRTC_WIN)
SecureZeroMemory(ptr, len);
#else
memset(ptr, 0, len);
#if !defined(__pnacl__)
/* As best as we can tell, this is sufficient to break any optimisations that
might try to eliminate "superfluous" memsets. If there's an easy way to
detect memset_s, it would be better to use that. */
__asm__ __volatile__("" : : "r"(ptr) : "memory"); // NOLINT
#endif
#endif // !WEBRTC_WIN
}
} // namespace webrtc