bump_pointer_space.cc revision 8544b462b524a502d2a18efb5a790ef98fa5eb51
1590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier/* 2590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * Copyright (C) 2013 The Android Open Source Project 3590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * 4590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * Licensed under the Apache License, Version 2.0 (the "License"); 5590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * you may not use this file except in compliance with the License. 6590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * You may obtain a copy of the License at 7590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * 8590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * http://www.apache.org/licenses/LICENSE-2.0 9590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * 10590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * Unless required by applicable law or agreed to in writing, software 11590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * distributed under the License is distributed on an "AS IS" BASIS, 12590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * See the License for the specific language governing permissions and 14590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier * limitations under the License. 15590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier */ 16590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 17590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier#include "bump_pointer_space.h" 18590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier#include "bump_pointer_space-inl.h" 19590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier#include "mirror/object-inl.h" 20590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier#include "mirror/class-inl.h" 21692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier#include "thread_list.h" 22590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 23590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartiernamespace art { 24590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartiernamespace gc { 25590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartiernamespace space { 26590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 27590fee9e8972f872301c2d16a575d579ee564beeMathieu ChartierBumpPointerSpace* BumpPointerSpace::Create(const std::string& name, size_t capacity, 28590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier byte* requested_begin) { 29590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier capacity = RoundUp(capacity, kPageSize); 30590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier std::string error_msg; 31590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier UniquePtr<MemMap> mem_map(MemMap::MapAnonymous(name.c_str(), requested_begin, capacity, 32ef7d42fca18c16fbaf103822ad16f23246e2905dIan Rogers PROT_READ | PROT_WRITE, true, &error_msg)); 33590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier if (mem_map.get() == nullptr) { 34590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier LOG(ERROR) << "Failed to allocate pages for alloc space (" << name << ") of size " 35590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier << PrettySize(capacity) << " with message " << error_msg; 36590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier return nullptr; 37590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier } 38590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier return new BumpPointerSpace(name, mem_map.release()); 39590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 40590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 41590fee9e8972f872301c2d16a575d579ee564beeMathieu ChartierBumpPointerSpace::BumpPointerSpace(const std::string& name, byte* begin, byte* limit) 42590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier : ContinuousMemMapAllocSpace(name, nullptr, begin, begin, limit, 43590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier kGcRetentionPolicyAlwaysCollect), 44692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier growth_end_(limit), 45692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier objects_allocated_(0), bytes_allocated_(0), 46692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier block_lock_("Block lock"), 47fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier main_block_size_(0), 48692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier num_blocks_(0) { 49590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 50590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 51590fee9e8972f872301c2d16a575d579ee564beeMathieu ChartierBumpPointerSpace::BumpPointerSpace(const std::string& name, MemMap* mem_map) 52590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier : ContinuousMemMapAllocSpace(name, mem_map, mem_map->Begin(), mem_map->Begin(), mem_map->End(), 53590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier kGcRetentionPolicyAlwaysCollect), 54692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier growth_end_(mem_map->End()), 55692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier objects_allocated_(0), bytes_allocated_(0), 56692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier block_lock_("Block lock"), 57fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier main_block_size_(0), 58692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier num_blocks_(0) { 59590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 60590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 61590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartiermirror::Object* BumpPointerSpace::Alloc(Thread*, size_t num_bytes, size_t* bytes_allocated) { 62692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier num_bytes = RoundUp(num_bytes, kAlignment); 63590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier mirror::Object* ret = AllocNonvirtual(num_bytes); 64590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier if (LIKELY(ret != nullptr)) { 65590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier *bytes_allocated = num_bytes; 66590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier } 67590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier return ret; 68590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 69590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 70ef7d42fca18c16fbaf103822ad16f23246e2905dIan Rogerssize_t BumpPointerSpace::AllocationSize(mirror::Object* obj) { 71590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier return AllocationSizeNonvirtual(obj); 72590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 73590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 74590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartiervoid BumpPointerSpace::Clear() { 75590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier // Release the pages back to the operating system. 76590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier CHECK_NE(madvise(Begin(), Limit() - Begin(), MADV_DONTNEED), -1) << "madvise failed"; 77590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier // Reset the end of the space back to the beginning, we move the end forward as we allocate 78590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier // objects. 79fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier SetEnd(Begin()); 80692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier objects_allocated_ = 0; 81692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier bytes_allocated_ = 0; 82590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier growth_end_ = Limit(); 83692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier { 84692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(Thread::Current(), block_lock_); 85692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier num_blocks_ = 0; 86fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier main_block_size_ = 0; 87692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 88590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 89590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 90590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartiervoid BumpPointerSpace::Dump(std::ostream& os) const { 91590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier os << reinterpret_cast<void*>(Begin()) << "-" << reinterpret_cast<void*>(End()) << " - " 92590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier << reinterpret_cast<void*>(Limit()); 93590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 94590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 95590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartiermirror::Object* BumpPointerSpace::GetNextObject(mirror::Object* obj) { 96590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier const uintptr_t position = reinterpret_cast<uintptr_t>(obj) + obj->SizeOf(); 97590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier return reinterpret_cast<mirror::Object*>(RoundUp(position, kAlignment)); 98590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 99590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 100692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartiervoid BumpPointerSpace::RevokeThreadLocalBuffers(Thread* thread) { 101692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(Thread::Current(), block_lock_); 102692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier RevokeThreadLocalBuffersLocked(thread); 103692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 104692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 105692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartiervoid BumpPointerSpace::RevokeAllThreadLocalBuffers() { 106692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier Thread* self = Thread::Current(); 107692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(self, *Locks::runtime_shutdown_lock_); 108692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu2(self, *Locks::thread_list_lock_); 109692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // TODO: Not do a copy of the thread list? 110692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier std::list<Thread*> thread_list = Runtime::Current()->GetThreadList()->GetList(); 111692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier for (Thread* thread : thread_list) { 112692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier RevokeThreadLocalBuffers(thread); 113692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 114692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 115692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 116692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartiervoid BumpPointerSpace::UpdateMainBlock() { 117692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier DCHECK_EQ(num_blocks_, 0U); 118fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier main_block_size_ = Size(); 119692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 120692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 121692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier// Returns the start of the storage. 122692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartierbyte* BumpPointerSpace::AllocBlock(size_t bytes) { 123692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier bytes = RoundUp(bytes, kAlignment); 124692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (!num_blocks_) { 125692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier UpdateMainBlock(); 126692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 127692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier byte* storage = reinterpret_cast<byte*>( 128692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier AllocNonvirtualWithoutAccounting(bytes + sizeof(BlockHeader))); 129692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (LIKELY(storage != nullptr)) { 130692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier BlockHeader* header = reinterpret_cast<BlockHeader*>(storage); 131692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier header->size_ = bytes; // Write out the block header. 132692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier storage += sizeof(BlockHeader); 133692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier ++num_blocks_; 134692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 135692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier return storage; 136692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 137692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 13883c8ee000d525017ead8753fce6bc1020249b96aMathieu Chartiervoid BumpPointerSpace::Walk(ObjectCallback* callback, void* arg) { 139692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier byte* pos = Begin(); 1408544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier byte* end = End(); 141fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier byte* main_end = pos; 142692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier { 143692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(Thread::Current(), block_lock_); 144692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // If we have 0 blocks then we need to update the main header since we have bump pointer style 145692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // allocation into an unbounded region (actually bounded by Capacity()). 146692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (num_blocks_ == 0) { 147692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier UpdateMainBlock(); 148692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 1498544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier main_end = Begin() + main_block_size_; 1508544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier if (num_blocks_ == 0) { 1518544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // We don't have any other blocks, this means someone else may be allocating into the main 1528544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // block. In this case, we don't want to try and visit the other blocks after the main block 1538544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // since these could actually be part of the main block. 1548544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier end = main_end; 1558544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier } 156692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 157fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier // Walk all of the objects in the main block first. 158fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier while (pos < main_end) { 159fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier mirror::Object* obj = reinterpret_cast<mirror::Object*>(pos); 1608544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier if (obj->GetClass() == nullptr) { 1618544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // There is a race condition where a thread has just allocated an object but not set the 1628544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // class. We can't know the size of this object, so we don't visit it and exit the function 1638544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // since there is guaranteed to be not other blocks. 1648544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier return; 1658544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier } else { 1668544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier callback(obj, arg); 1678544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier pos = reinterpret_cast<byte*>(GetNextObject(obj)); 1688544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier } 169fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier } 170fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier // Walk the other blocks (currently only TLABs). 1718544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier while (pos < end) { 172692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier BlockHeader* header = reinterpret_cast<BlockHeader*>(pos); 173692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier size_t block_size = header->size_; 174692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier pos += sizeof(BlockHeader); // Skip the header so that we know where the objects 175692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier mirror::Object* obj = reinterpret_cast<mirror::Object*>(pos); 176692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier const mirror::Object* end = reinterpret_cast<const mirror::Object*>(pos + block_size); 177692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier CHECK_LE(reinterpret_cast<const byte*>(end), End()); 178692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // We don't know how many objects are allocated in the current block. When we hit a null class 179692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // assume its the end. TODO: Have a thread update the header when it flushes the block? 180692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier while (obj < end && obj->GetClass() != nullptr) { 181692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier callback(obj, arg); 182692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier obj = GetNextObject(obj); 183692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 184692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier pos += block_size; 185692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 186692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 187692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 188692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartierbool BumpPointerSpace::IsEmpty() const { 189fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier return Begin() == End(); 190692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 191692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 192692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartieruint64_t BumpPointerSpace::GetBytesAllocated() { 193692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // Start out pre-determined amount (blocks which are not being allocated into). 194b122a4bbed34ab22b4c1541ee25e5cf22f12a926Ian Rogers uint64_t total = static_cast<uint64_t>(bytes_allocated_.Load()); 195692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier Thread* self = Thread::Current(); 196692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(self, *Locks::runtime_shutdown_lock_); 197692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu2(self, *Locks::thread_list_lock_); 198692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier std::list<Thread*> thread_list = Runtime::Current()->GetThreadList()->GetList(); 199692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu3(Thread::Current(), block_lock_); 200692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // If we don't have any blocks, we don't have any thread local buffers. This check is required 201692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // since there can exist multiple bump pointer spaces which exist at the same time. 202692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (num_blocks_ > 0) { 203692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier for (Thread* thread : thread_list) { 204692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier total += thread->thread_local_pos_ - thread->thread_local_start_; 205692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 206692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 207692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier return total; 208692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 209692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 210692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartieruint64_t BumpPointerSpace::GetObjectsAllocated() { 211692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // Start out pre-determined amount (blocks which are not being allocated into). 212b122a4bbed34ab22b4c1541ee25e5cf22f12a926Ian Rogers uint64_t total = static_cast<uint64_t>(objects_allocated_.Load()); 213692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier Thread* self = Thread::Current(); 214692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(self, *Locks::runtime_shutdown_lock_); 215692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu2(self, *Locks::thread_list_lock_); 216692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier std::list<Thread*> thread_list = Runtime::Current()->GetThreadList()->GetList(); 217692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu3(Thread::Current(), block_lock_); 218692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // If we don't have any blocks, we don't have any thread local buffers. This check is required 219692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // since there can exist multiple bump pointer spaces which exist at the same time. 220692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (num_blocks_ > 0) { 221692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier for (Thread* thread : thread_list) { 222692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier total += thread->thread_local_objects_; 223692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 224692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 225692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier return total; 226692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 227692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 228692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartiervoid BumpPointerSpace::RevokeThreadLocalBuffersLocked(Thread* thread) { 229b122a4bbed34ab22b4c1541ee25e5cf22f12a926Ian Rogers objects_allocated_.FetchAndAdd(thread->thread_local_objects_); 230b122a4bbed34ab22b4c1541ee25e5cf22f12a926Ian Rogers bytes_allocated_.FetchAndAdd(thread->thread_local_pos_ - thread->thread_local_start_); 231e6da9af8dfe0a3e3fbc2be700554f6478380e7b9Mathieu Chartier thread->SetTlab(nullptr, nullptr); 232692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 233692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 234e6da9af8dfe0a3e3fbc2be700554f6478380e7b9Mathieu Chartierbool BumpPointerSpace::AllocNewTlab(Thread* self, size_t bytes) { 235692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(Thread::Current(), block_lock_); 236692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier RevokeThreadLocalBuffersLocked(self); 237692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier byte* start = AllocBlock(bytes); 238692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (start == nullptr) { 239692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier return false; 240692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 241e6da9af8dfe0a3e3fbc2be700554f6478380e7b9Mathieu Chartier self->SetTlab(start, start + bytes); 242692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier return true; 243692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 244692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 245590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} // namespace space 246590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} // namespace gc 247590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} // namespace art 248