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.
41extern "C" void dlmalloc_inspect_all(void(*handler)(void*, void *, size_t, void*), void* arg);
42extern "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.
47extern "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.
52extern "C" void DlmallocBytesAllocatedCallback(void* start, void* end, size_t used_bytes, void* arg);
53extern "C" void DlmallocObjectsAllocatedCallback(void* start, void* end, size_t used_bytes, void* arg);
54
55namespace art {
56namespace gc {
57namespace allocator {
58
59// Callback from dlmalloc when it needs to increase the footprint. Must be implemented somewhere
60// else (currently dlmalloc_space.cc).
61void* 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