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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 #pragma GCC diagnostic ignored "-Wnull-pointer-arithmetic"
36 #include "../../external/dlmalloc/malloc.h"
37 #pragma GCC diagnostic pop
38 
39 // Callback for dlmalloc_inspect_all or mspace_inspect_all that will madvise(2) unused
40 // pages back to the kernel.
41 extern "C" void DlmallocMadviseCallback(void* start, void* end, size_t used_bytes, void* /*arg*/);
42 
43 // Callbacks for dlmalloc_inspect_all or mspace_inspect_all that will
44 // count the number of bytes allocated and objects allocated,
45 // respectively.
46 extern "C" void DlmallocBytesAllocatedCallback(void* start, void* end, size_t used_bytes, void* arg);
47 extern "C" void DlmallocObjectsAllocatedCallback(void* start, void* end, size_t used_bytes, void* arg);
48 
49 namespace art {
50 namespace gc {
51 namespace allocator {
52 
53 // Callback from dlmalloc when it needs to increase the footprint. Must be implemented somewhere
54 // else (currently dlmalloc_space.cc).
55 void* ArtDlMallocMoreCore(void* mspace, intptr_t increment);
56 
57 }  // namespace allocator
58 }  // namespace gc
59 }  // namespace art
60 
61 #endif  // ART_RUNTIME_GC_ALLOCATOR_DLMALLOC_H_
62