1 /*
2 * Copyright (c) 2022 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 #include "ecmascript/mem/heap_region_allocator.h"
17
18 #include "ecmascript/jit/jit.h"
19 #include "ecmascript/mem/mem_map_allocator.h"
20
21 namespace panda::ecmascript {
22 constexpr size_t PANDA_POOL_ALIGNMENT_IN_BYTES = 256_KB;
23
AllocateAlignedRegion(Space * space,size_t capacity,JSThread * thread,BaseHeap * heap,bool isFresh)24 Region *HeapRegionAllocator::AllocateAlignedRegion(Space *space, size_t capacity, JSThread* thread, BaseHeap *heap,
25 bool isFresh)
26 {
27 if (capacity == 0) {
28 LOG_ECMA_MEM(FATAL) << "capacity must have a size bigger than 0";
29 UNREACHABLE();
30 }
31 RegionSpaceFlag flags = space->GetRegionFlag();
32 RegionTypeFlag typeFlag = isFresh ? RegionTypeFlag::FRESH : RegionTypeFlag::DEFAULT;
33 bool isRegular = (flags != RegionSpaceFlag::IN_HUGE_OBJECT_SPACE &&
34 flags != RegionSpaceFlag::IN_HUGE_MACHINE_CODE_SPACE &&
35 flags != RegionSpaceFlag::IN_SHARED_HUGE_OBJECT_SPACE);
36 bool isMachineCode = (flags == RegionSpaceFlag::IN_MACHINE_CODE_SPACE ||
37 flags == RegionSpaceFlag::IN_HUGE_MACHINE_CODE_SPACE);
38 auto tid = thread ? thread->GetThreadId() : JSThread::GetCurrentThreadId();
39 auto pool = MemMapAllocator::GetInstance()->Allocate(tid, capacity, DEFAULT_REGION_SIZE,
40 ToSpaceTypeName(space->GetSpaceType()),
41 isRegular, isMachineCode,
42 Jit::GetInstance()->IsEnableJitFort());
43 void *mapMem = pool.GetMem();
44 if (mapMem == nullptr) {
45 if (thread != nullptr && thread->GetEcmaVM()->IsInitialized()) {
46 Heap *localHeap = const_cast<Heap *>(thread->GetEcmaVM()->GetHeap());
47 if (!localHeap->InGC()) {
48 LOG_ECMA_MEM(INFO)
49 << "HeapRegionAllocator::AllocateAlignedRegion, is inGC and not DumpHeapSnapshotBeforeOOM";
50 localHeap->DumpHeapSnapshotBeforeOOM();
51 }
52 heap->ThrowOutOfMemoryErrorForDefault(thread, DEFAULT_REGION_SIZE,
53 "HeapRegionAllocator::AllocateAlignedRegion", false);
54 }
55 LOG_ECMA_MEM(FATAL) << "pool is empty " << annoMemoryUsage_.load(std::memory_order_relaxed);
56 UNREACHABLE();
57 }
58 #if ECMASCRIPT_ENABLE_ZAP_MEM
59 if (memset_s(mapMem, capacity, 0, capacity) != EOK) {
60 LOG_FULL(FATAL) << "memset_s failed";
61 UNREACHABLE();
62 }
63 #endif
64 IncreaseAnnoMemoryUsage(capacity);
65
66 uintptr_t mem = ToUintPtr(mapMem);
67 // Check that the address is 256K byte aligned
68 LOG_ECMA_IF(AlignUp(mem, PANDA_POOL_ALIGNMENT_IN_BYTES) != mem, FATAL) << "region not align by 256KB";
69 // NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
70 uintptr_t begin = AlignUp(mem + sizeof(Region), static_cast<size_t>(MemAlignment::MEM_ALIGN_REGION));
71 uintptr_t end = mem + capacity;
72
73 Region *region = new (ToVoidPtr(mem)) Region(heap->GetNativeAreaAllocator(), mem, begin, end, flags, typeFlag);
74 region->Initialize();
75 std::atomic_thread_fence(std::memory_order_seq_cst);
76 return region;
77 }
78
FreeRegion(Region * region,size_t cachedSize)79 void HeapRegionAllocator::FreeRegion(Region *region, size_t cachedSize)
80 {
81 auto size = region->GetCapacity();
82 bool isRegular = !region->InHugeObjectSpace() && !region->InHugeMachineCodeSpace() &&
83 !region->InSharedHugeObjectSpace();
84 auto allocateBase = region->GetAllocateBase();
85
86 DecreaseAnnoMemoryUsage(size);
87 region->Invalidate();
88 region->ClearMembers();
89 #if ECMASCRIPT_ENABLE_ZAP_MEM
90 if (memset_s(ToVoidPtr(allocateBase), size, INVALID_VALUE, size) != EOK) {
91 LOG_FULL(FATAL) << "memset_s failed";
92 UNREACHABLE();
93 }
94 #endif
95 MemMapAllocator::GetInstance()->CacheOrFree(ToVoidPtr(allocateBase),
96 size, isRegular, cachedSize);
97 }
98 } // namespace panda::ecmascript
99