1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "chre/platform/memory.h" 18 #include "chre/platform/slpi/memory.h" 19 20 #ifdef CHRE_SLPI_SEE 21 #include "chre/platform/slpi/see/island_vote_client.h" 22 #endif 23 24 #include <cstdlib> 25 26 extern "C" { 27 28 #ifdef CHRE_SLPI_UIMG_ENABLED 29 #include "sns_island_util.h" 30 #include "sns_memmgr.h" 31 #endif // CHRE_SLPI_UIMG_ENABLED 32 33 } // extern "C" 34 35 namespace chre { 36 memoryAlloc(size_t size)37void *memoryAlloc(size_t size) { 38 #ifdef CHRE_SLPI_UIMG_ENABLED 39 void *ptr = sns_malloc(SNS_HEAP_CHRE_ISLAND, size); 40 41 // Fall back to big image memory when uimg memory is exhausted. 42 // Must exclude size 0 as clients may not explicitly free memory of size 0, 43 // which may mistakenly hold the system in big image. 44 if (ptr == nullptr && size != 0) { 45 // Increment big image ref count to prevent system from entering uimg 46 // while big image memory is in use. 47 IslandVoteClientSingleton::get()->incrementBigImageRefCount(); 48 ptr = memoryAllocBigImage(size); 49 50 // Big image allocation failed too. 51 if (ptr == nullptr) { 52 IslandVoteClientSingleton::get()->decrementBigImageRefCount(); 53 } 54 } 55 56 return ptr; 57 #else 58 return malloc(size); 59 #endif // CHRE_SLPI_UIMG_ENABLED 60 } 61 memoryAllocBigImage(size_t size)62void *memoryAllocBigImage(size_t size) { 63 return malloc(size); 64 } 65 palSystemApiMemoryAlloc(size_t size)66void *palSystemApiMemoryAlloc(size_t size) { 67 return malloc(size); 68 } 69 memoryFree(void * pointer)70void memoryFree(void *pointer) { 71 #ifdef CHRE_SLPI_UIMG_ENABLED 72 if (sns_island_is_island_ptr(reinterpret_cast<intptr_t>(pointer))) { 73 sns_free(pointer); 74 } else { 75 memoryFreeBigImage(pointer); 76 77 // Must exclude nullptr as it's excluded in memoryAlloc() as well. 78 // Note currently sns_island_is_island_ptr returns true for nullptr, 79 // so this mainly serves as a protection in case the implementation of 80 // sns_island_is_island_ptr changes in the future. 81 if (pointer != nullptr) { 82 IslandVoteClientSingleton::get()->decrementBigImageRefCount(); 83 } 84 } 85 #else 86 free(pointer); 87 #endif // CHRE_SLPI_UIMG_ENABLED 88 } 89 memoryFreeBigImage(void * pointer)90void memoryFreeBigImage(void *pointer) { 91 free(pointer); 92 } 93 palSystemApiMemoryFree(void * pointer)94void palSystemApiMemoryFree(void *pointer) { 95 free(pointer); 96 } 97 98 } // namespace chre 99