xref: /aosp_15_r20/external/libbrillo/brillo/pointer_utils.h (revision 1a96fba65179ea7d3f56207137718607415c5953)
1*1a96fba6SXin Li // Copyright 2014 The Chromium OS Authors. All rights reserved.
2*1a96fba6SXin Li // Use of this source code is governed by a BSD-style license that can be
3*1a96fba6SXin Li // found in the LICENSE file.
4*1a96fba6SXin Li 
5*1a96fba6SXin Li #ifndef LIBBRILLO_BRILLO_POINTER_UTILS_H_
6*1a96fba6SXin Li #define LIBBRILLO_BRILLO_POINTER_UTILS_H_
7*1a96fba6SXin Li 
8*1a96fba6SXin Li #include <cstdint>
9*1a96fba6SXin Li #include <sys/types.h>
10*1a96fba6SXin Li 
11*1a96fba6SXin Li namespace brillo {
12*1a96fba6SXin Li 
13*1a96fba6SXin Li // AdvancePointer() is a helper function to advance void pointer by
14*1a96fba6SXin Li // |byte_offset| bytes. Both const and non-const overloads are provided.
AdvancePointer(void * pointer,ssize_t byte_offset)15*1a96fba6SXin Li inline void* AdvancePointer(void* pointer, ssize_t byte_offset) {
16*1a96fba6SXin Li   return reinterpret_cast<uint8_t*>(pointer) + byte_offset;
17*1a96fba6SXin Li }
AdvancePointer(const void * pointer,ssize_t byte_offset)18*1a96fba6SXin Li inline const void* AdvancePointer(const void* pointer, ssize_t byte_offset) {
19*1a96fba6SXin Li   return reinterpret_cast<const uint8_t*>(pointer) + byte_offset;
20*1a96fba6SXin Li }
21*1a96fba6SXin Li 
22*1a96fba6SXin Li }  // namespace brillo
23*1a96fba6SXin Li 
24*1a96fba6SXin Li #endif  // LIBBRILLO_BRILLO_POINTER_UTILS_H_
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