57dc9e367c
Change log:ffaf1e2ba6..ef538e3112Full diff:ffaf1e2ba6..ef538e3112Roll chromium third_party fb3dc2a0aa..cbc2a20101 Change log:fb3dc2a0aa..cbc2a20101Changed dependencies: * src/base:2743076235..02a6c4cdd0* src/build:459adce3eb..3c4d6b6d24* src/ios:71b35d6ee6..0c6d3816a0* src/testing:f624b1f4b7..e0597e0b5d* src/third_party/catapult: https://chromium.googlesource.com/catapult.git/+log/eca23c365a..fdacd1639e * src/third_party/depot_tools:e05f18d477..e09b6845cf* src/third_party/freetype/src:0589f6e6ee..8f1ed54877* src/third_party/googletest/src:145d05750b..9077ec7efe* src/tools:76e5757c8f..c7862334ceDEPS diff:ffaf1e2ba6..ef538e3112/DEPS Clang version changed 332838:334100 Details:ffaf1e2ba6..ef538e3112/tools/clang/scripts/update.py TBR=buildbot@webrtc.org, BUG=None CQ_INCLUDE_TRYBOTS=master.internal.tryserver.corp.webrtc:linux_internal NO_AUTOIMPORT_DEPS_CHECK=true Change-Id: Iac45f00b35127f886b32aac8b79578fbe528fb00 Reviewed-on: https://webrtc-review.googlesource.com/83220 Reviewed-by: WebRTC Buildbot <buildbot@webrtc.org> Commit-Queue: WebRTC Buildbot <buildbot@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23585}
48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
// Copyright 2018 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef ABSL_BASE_INTERNAL_HIDE_PTR_H_
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#define ABSL_BASE_INTERNAL_HIDE_PTR_H_
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#include <cstdint>
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namespace absl {
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namespace base_internal {
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// Arbitrary value with high bits set. Xor'ing with it is unlikely
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// to map one valid pointer to another valid pointer.
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constexpr uintptr_t HideMask() {
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return (uintptr_t{0xF03A5F7BU} << (sizeof(uintptr_t) - 4) * 8) | 0xF03A5F7BU;
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}
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// Hide a pointer from the leak checker. For internal use only.
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// Differs from absl::IgnoreLeak(ptr) in that absl::IgnoreLeak(ptr) causes ptr
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// and all objects reachable from ptr to be ignored by the leak checker.
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template <class T>
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inline uintptr_t HidePtr(T* ptr) {
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return reinterpret_cast<uintptr_t>(ptr) ^ HideMask();
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}
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// Return a pointer that has been hidden from the leak checker.
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// For internal use only.
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template <class T>
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inline T* UnhidePtr(uintptr_t hidden) {
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return reinterpret_cast<T*>(hidden ^ HideMask());
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}
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} // namespace base_internal
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} // namespace absl
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#endif // ABSL_BASE_INTERNAL_HIDE_PTR_H_
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