debugging/internal/address_is_readable.h

0001 // Copyright 2017 The Abseil Authors.
0002 //
0003 // Licensed under the Apache License, Version 2.0 (the "License");
0004 // you may not use this file except in compliance with the License.
0005 // You may obtain a copy of the License at
0006 //
0007 //      https://www.apache.org/licenses/LICENSE-2.0
0008 //
0009 // Unless required by applicable law or agreed to in writing, software
0010 // distributed under the License is distributed on an "AS IS" BASIS,
0011 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0012 // See the License for the specific language governing permissions and
0013 // limitations under the License.
0014
0015 #ifndef ABSL_DEBUGGING_INTERNAL_ADDRESS_IS_READABLE_H_
0016 #define ABSL_DEBUGGING_INTERNAL_ADDRESS_IS_READABLE_H_
0017
0018 #include "absl/base/config.h"
0019
0020 namespace absl {
0021 ABSL_NAMESPACE_BEGIN
0022 namespace debugging_internal {
0023
0024 // Return whether the byte at *addr is readable, without faulting.
0025 // Save and restores errno.
0026 bool AddressIsReadable(const void *addr);
0027
0028 }  // namespace debugging_internal
0029 ABSL_NAMESPACE_END
0030 }  // namespace absl
0031
0032 #endif  // ABSL_DEBUGGING_INTERNAL_ADDRESS_IS_READABLE_H_