1 /* 2 * Copyright (C) 2011 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 #ifndef ART_RUNTIME_GC_ALLOCATOR_DLMALLOC_H_ 18 #define ART_RUNTIME_GC_ALLOCATOR_DLMALLOC_H_ 19 20 #include <cstdint> 21 22 // Configure dlmalloc for mspaces. 23 // Avoid a collision with one used in llvm. 24 #undef HAVE_MMAP 25 #define HAVE_MMAP 0 26 #define HAVE_MREMAP 0 27 #define HAVE_MORECORE 1 28 #define MSPACES 1 29 #define NO_MALLINFO 1 30 #define ONLY_MSPACES 1 31 #define MALLOC_INSPECT_ALL 1 32 33 #pragma GCC diagnostic push 34 #pragma GCC diagnostic ignored "-Wredundant-decls" 35 #include "../../bionic/libc/upstream-dlmalloc/malloc.h" 36 #pragma GCC diagnostic pop 37 38 #ifdef HAVE_ANDROID_OS 39 // Define dlmalloc routines from bionic that cannot be included directly because of redefining 40 // symbols from the include above. 41 extern "C" void dlmalloc_inspect_all(void(*handler)(void*, void *, size_t, void*), void* arg); 42 extern "C" int dlmalloc_trim(size_t); 43 #endif 44 45 // Callback for dlmalloc_inspect_all or mspace_inspect_all that will madvise(2) unused 46 // pages back to the kernel. 47 extern "C" void DlmallocMadviseCallback(void* start, void* end, size_t used_bytes, void* /*arg*/); 48 49 // Callbacks for dlmalloc_inspect_all or mspace_inspect_all that will 50 // count the number of bytes allocated and objects allocated, 51 // respectively. 52 extern "C" void DlmallocBytesAllocatedCallback(void* start, void* end, size_t used_bytes, void* arg); 53 extern "C" void DlmallocObjectsAllocatedCallback(void* start, void* end, size_t used_bytes, void* arg); 54 55 namespace art { 56 namespace gc { 57 namespace allocator { 58 59 // Callback from dlmalloc when it needs to increase the footprint. Must be implemented somewhere 60 // else (currently dlmalloc_space.cc). 61 void* ArtDlMallocMoreCore(void* mspace, intptr_t increment); 62 63 } // namespace allocator 64 } // namespace gc 65 } // namespace art 66 67 #endif // ART_RUNTIME_GC_ALLOCATOR_DLMALLOC_H_ 68