Line data    Source code

       1             : /*
       2             :  *
       3             :  *    Copyright (c) 2021 Project CHIP Authors
       4             :  *
       5             :  *    Licensed under the Apache License, Version 2.0 (the "License");
       6             :  *    you may not use this file except in compliance with the License.
       7             :  *    You may obtain a copy of the License at
       8             :  *
       9             :  *        http://www.apache.org/licenses/LICENSE-2.0
      10             :  *
      11             :  *    Unless required by applicable law or agreed to in writing, software
      12             :  *    distributed under the License is distributed on an "AS IS" BASIS,
      13             :  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      14             :  *    See the License for the specific language governing permissions and
      15             :  *    limitations under the License.
      16             :  */
      17             : 
      18             : #include "FixedBufferAllocator.h"
      19             : 
      20             : #include <cstring>
      21             : 
      22             : namespace chip {
      23           4 : uint8_t * FixedBufferAllocator::Alloc(size_t count)
      24             : {
      25           4 :     if (mBegin + count > mEnd)
      26             :     {
      27           1 :         mAnyAllocFailed = true;
      28           1 :         return nullptr;
      29             :     }
      30             : 
      31           3 :     uint8_t * ptr = mBegin;
      32           3 :     mBegin += count;
      33           3 :     return ptr;
      34             : }
      35             : 
      36           4 : uint8_t * FixedBufferAllocator::Clone(const void * data, size_t dataLen)
      37             : {
      38           4 :     uint8_t * ptr = Alloc(dataLen);
      39             : 
      40           4 :     if (ptr != nullptr)
      41             :     {
      42           3 :         memcpy(ptr, data, dataLen);
      43             :     }
      44             : 
      45           4 :     return ptr;
      46             : }
      47             : 
      48           1 : char * FixedBufferAllocator::Clone(const char * str)
      49             : {
      50           1 :     return reinterpret_cast<char *>(Clone(str, strlen(str) + 1));
      51             : }
      52             : } // namespace chip