1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef PANDA_RUNTIME_MEM_MEM_HOOKS_H_ 17 #define PANDA_RUNTIME_MEM_MEM_HOOKS_H_ 18 19 #include "libpandabase/mem/mem.h" 20 21 namespace panda::mem { 22 23 class PandaHooks { 24 public: 25 static void Enable(); 26 27 static void Disable(); 28 GetAllocViaStandard()29 static size_t GetAllocViaStandard() noexcept 30 { 31 return alloc_via_standard; 32 } 33 34 private: 35 static constexpr size_t MAX_ALLOC_VIA_STANDARD = 4_MB; 36 37 static void SaveMemHooks(); 38 39 static void SetMemHooks(); 40 41 static void *(*volatile old_malloc_hook)(size_t, const void *); 42 static void *(*volatile old_memalign_hook)(size_t, size_t, const void *); 43 static void (*volatile old_free_hook)(void *, const void *); 44 45 static void *MallocHook(size_t size, const void *caller); 46 static void *MemalignHook(size_t alignment, size_t size, const void *caller); 47 static void FreeHook(void *ptr, const void *caller); 48 49 static size_t alloc_via_standard; 50 }; 51 52 } // namespace panda::mem 53 54 #endif // PANDA_RUNTIME_MEM_MEM_HOOKS_H_ 55