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author | Harish Mahendrakar <harish.mahendrakar@ittiam.com> | 2020-10-27 17:21:06 -0700 |
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committer | Harish Mahendrakar <harish.mahendrakar@ittiam.com> | 2020-10-28 20:50:30 +0000 |
commit | bb55342cbca1f67335f46ee07cdc1f30e4c3b140 (patch) | |
tree | 35d73359fd09cc16d1fbb857909581bad75b765e /third_party/abseil-cpp/absl/base/internal/errno_saver.h | |
parent | 3e1889fd3ec2121f051cded7fa3aaa946b442a6d (diff) | |
download | webrtc-bb55342cbca1f67335f46ee07cdc1f30e4c3b140.tar.gz |
Import abseil-cpp to third_party
Renamed abseil modules to make them webrtc specific.
Restricted visibility of abseil modules to webrtc packages.
Bug: 171836454
Test: Builds
Change-Id: Icf24c7e3093a77dd9a26e7ec78bd531eb1ad3dec
Diffstat (limited to 'third_party/abseil-cpp/absl/base/internal/errno_saver.h')
-rw-r--r-- | third_party/abseil-cpp/absl/base/internal/errno_saver.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/third_party/abseil-cpp/absl/base/internal/errno_saver.h b/third_party/abseil-cpp/absl/base/internal/errno_saver.h new file mode 100644 index 0000000000..251de510fc --- /dev/null +++ b/third_party/abseil-cpp/absl/base/internal/errno_saver.h @@ -0,0 +1,43 @@ +// Copyright 2017 The Abseil Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// https://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#ifndef ABSL_BASE_INTERNAL_ERRNO_SAVER_H_ +#define ABSL_BASE_INTERNAL_ERRNO_SAVER_H_ + +#include <cerrno> + +#include "absl/base/config.h" + +namespace absl { +ABSL_NAMESPACE_BEGIN +namespace base_internal { + +// `ErrnoSaver` captures the value of `errno` upon construction and restores it +// upon deletion. It is used in low-level code and must be super fast. Do not +// add instrumentation, even in debug modes. +class ErrnoSaver { + public: + ErrnoSaver() : saved_errno_(errno) {} + ~ErrnoSaver() { errno = saved_errno_; } + int operator()() const { return saved_errno_; } + + private: + const int saved_errno_; +}; + +} // namespace base_internal +ABSL_NAMESPACE_END +} // namespace absl + +#endif // ABSL_BASE_INTERNAL_ERRNO_SAVER_H_ |