bump_pointer_space.cc revision dd7624d2b9e599d57762d12031b10b89defc9807
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 Chartiervoid BumpPointerSpace::Clear() { 62590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier // Release the pages back to the operating system. 63590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier CHECK_NE(madvise(Begin(), Limit() - Begin(), MADV_DONTNEED), -1) << "madvise failed"; 6415d3402bbf8265eb1165694da2e4117eb128f3bcMathieu Chartier} 6515d3402bbf8265eb1165694da2e4117eb128f3bcMathieu Chartier 6615d3402bbf8265eb1165694da2e4117eb128f3bcMathieu Chartiervoid BumpPointerSpace::Reset() { 67590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier // Reset the end of the space back to the beginning, we move the end forward as we allocate 68590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier // objects. 69fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier SetEnd(Begin()); 70692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier objects_allocated_ = 0; 71692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier bytes_allocated_ = 0; 72590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier growth_end_ = Limit(); 73692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier { 74692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(Thread::Current(), block_lock_); 75692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier num_blocks_ = 0; 76fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier main_block_size_ = 0; 77692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 78590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 79590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 80590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartiervoid BumpPointerSpace::Dump(std::ostream& os) const { 8115d3402bbf8265eb1165694da2e4117eb128f3bcMathieu Chartier os << GetName() << " " 8215d3402bbf8265eb1165694da2e4117eb128f3bcMathieu Chartier << reinterpret_cast<void*>(Begin()) << "-" << reinterpret_cast<void*>(End()) << " - " 8315d3402bbf8265eb1165694da2e4117eb128f3bcMathieu Chartier << reinterpret_cast<void*>(Limit()); 84590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 85590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 86590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartiermirror::Object* BumpPointerSpace::GetNextObject(mirror::Object* obj) { 87590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier const uintptr_t position = reinterpret_cast<uintptr_t>(obj) + obj->SizeOf(); 88590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier return reinterpret_cast<mirror::Object*>(RoundUp(position, kAlignment)); 89590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 90590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 91692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartiervoid BumpPointerSpace::RevokeThreadLocalBuffers(Thread* thread) { 92692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(Thread::Current(), block_lock_); 93692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier RevokeThreadLocalBuffersLocked(thread); 94692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 95692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 96692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartiervoid BumpPointerSpace::RevokeAllThreadLocalBuffers() { 97692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier Thread* self = Thread::Current(); 98692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(self, *Locks::runtime_shutdown_lock_); 99692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu2(self, *Locks::thread_list_lock_); 100692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // TODO: Not do a copy of the thread list? 101692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier std::list<Thread*> thread_list = Runtime::Current()->GetThreadList()->GetList(); 102692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier for (Thread* thread : thread_list) { 103692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier RevokeThreadLocalBuffers(thread); 104692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 105692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 106692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 107c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchivoid BumpPointerSpace::AssertThreadLocalBuffersAreRevoked(Thread* thread) { 108c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi if (kIsDebugBuild) { 109c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi MutexLock mu(Thread::Current(), block_lock_); 110c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi DCHECK(!thread->HasTlab()); 111c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi } 112c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi} 113c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi 114c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchivoid BumpPointerSpace::AssertAllThreadLocalBuffersAreRevoked() { 115c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi if (kIsDebugBuild) { 116c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi Thread* self = Thread::Current(); 117c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi MutexLock mu(self, *Locks::runtime_shutdown_lock_); 118c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi MutexLock mu2(self, *Locks::thread_list_lock_); 119c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi // TODO: Not do a copy of the thread list? 120c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi std::list<Thread*> thread_list = Runtime::Current()->GetThreadList()->GetList(); 121c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi for (Thread* thread : thread_list) { 122c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi AssertThreadLocalBuffersAreRevoked(thread); 123c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi } 124c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi } 125c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi} 126c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi 127692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartiervoid BumpPointerSpace::UpdateMainBlock() { 128692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier DCHECK_EQ(num_blocks_, 0U); 129fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier main_block_size_ = Size(); 130692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 131692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 132692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier// Returns the start of the storage. 133692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartierbyte* BumpPointerSpace::AllocBlock(size_t bytes) { 134692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier bytes = RoundUp(bytes, kAlignment); 135692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (!num_blocks_) { 136692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier UpdateMainBlock(); 137692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 138692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier byte* storage = reinterpret_cast<byte*>( 139692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier AllocNonvirtualWithoutAccounting(bytes + sizeof(BlockHeader))); 140692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (LIKELY(storage != nullptr)) { 141692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier BlockHeader* header = reinterpret_cast<BlockHeader*>(storage); 142692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier header->size_ = bytes; // Write out the block header. 143692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier storage += sizeof(BlockHeader); 144692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier ++num_blocks_; 145692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 146692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier return storage; 147692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 148692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 14983c8ee000d525017ead8753fce6bc1020249b96aMathieu Chartiervoid BumpPointerSpace::Walk(ObjectCallback* callback, void* arg) { 150692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier byte* pos = Begin(); 1518544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier byte* end = End(); 152fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier byte* main_end = pos; 153692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier { 154692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(Thread::Current(), block_lock_); 155692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // If we have 0 blocks then we need to update the main header since we have bump pointer style 156692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // allocation into an unbounded region (actually bounded by Capacity()). 157692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (num_blocks_ == 0) { 158692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier UpdateMainBlock(); 159692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 1608544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier main_end = Begin() + main_block_size_; 1618544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier if (num_blocks_ == 0) { 1628544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // We don't have any other blocks, this means someone else may be allocating into the main 1638544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // block. In this case, we don't want to try and visit the other blocks after the main block 1648544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // since these could actually be part of the main block. 1658544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier end = main_end; 1668544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier } 167692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 168fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier // Walk all of the objects in the main block first. 169fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier while (pos < main_end) { 170fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier mirror::Object* obj = reinterpret_cast<mirror::Object*>(pos); 1718544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier if (obj->GetClass() == nullptr) { 1728544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // There is a race condition where a thread has just allocated an object but not set the 1738544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // class. We can't know the size of this object, so we don't visit it and exit the function 1748544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier // since there is guaranteed to be not other blocks. 1758544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier return; 1768544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier } else { 1778544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier callback(obj, arg); 1788544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier pos = reinterpret_cast<byte*>(GetNextObject(obj)); 1798544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier } 180fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier } 181fc4c27e4d68707271bd7578ae5c8bef93a3ea66bMathieu Chartier // Walk the other blocks (currently only TLABs). 1828544b462b524a502d2a18efb5a790ef98fa5eb51Mathieu Chartier while (pos < end) { 183692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier BlockHeader* header = reinterpret_cast<BlockHeader*>(pos); 184692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier size_t block_size = header->size_; 185692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier pos += sizeof(BlockHeader); // Skip the header so that we know where the objects 186692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier mirror::Object* obj = reinterpret_cast<mirror::Object*>(pos); 187692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier const mirror::Object* end = reinterpret_cast<const mirror::Object*>(pos + block_size); 188692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier CHECK_LE(reinterpret_cast<const byte*>(end), End()); 189692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // We don't know how many objects are allocated in the current block. When we hit a null class 190692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // assume its the end. TODO: Have a thread update the header when it flushes the block? 191692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier while (obj < end && obj->GetClass() != nullptr) { 192692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier callback(obj, arg); 193692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier obj = GetNextObject(obj); 194692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 195692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier pos += block_size; 196692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 197692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 198692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 1996fac447555dc94a935b78198479cce645c837b89Ian Rogersaccounting::SpaceBitmap::SweepCallback* BumpPointerSpace::GetSweepCallback() { 2006fac447555dc94a935b78198479cce645c837b89Ian Rogers LOG(FATAL) << "Unimplemented"; 2016fac447555dc94a935b78198479cce645c837b89Ian Rogers return nullptr; 202692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 203692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 204692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartieruint64_t BumpPointerSpace::GetBytesAllocated() { 205692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // Start out pre-determined amount (blocks which are not being allocated into). 206b122a4bbed34ab22b4c1541ee25e5cf22f12a926Ian Rogers uint64_t total = static_cast<uint64_t>(bytes_allocated_.Load()); 207692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier Thread* self = Thread::Current(); 208692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(self, *Locks::runtime_shutdown_lock_); 209692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu2(self, *Locks::thread_list_lock_); 210692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier std::list<Thread*> thread_list = Runtime::Current()->GetThreadList()->GetList(); 211692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu3(Thread::Current(), block_lock_); 212692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // If we don't have any blocks, we don't have any thread local buffers. This check is required 213692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // since there can exist multiple bump pointer spaces which exist at the same time. 214692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (num_blocks_ > 0) { 215692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier for (Thread* thread : thread_list) { 216dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers total += thread->GetThreadLocalBytesAllocated(); 217692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 218692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 219692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier return total; 220692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 221692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 222692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartieruint64_t BumpPointerSpace::GetObjectsAllocated() { 223692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // Start out pre-determined amount (blocks which are not being allocated into). 224b122a4bbed34ab22b4c1541ee25e5cf22f12a926Ian Rogers uint64_t total = static_cast<uint64_t>(objects_allocated_.Load()); 225692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier Thread* self = Thread::Current(); 226692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(self, *Locks::runtime_shutdown_lock_); 227692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu2(self, *Locks::thread_list_lock_); 228692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier std::list<Thread*> thread_list = Runtime::Current()->GetThreadList()->GetList(); 229692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu3(Thread::Current(), block_lock_); 230692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // If we don't have any blocks, we don't have any thread local buffers. This check is required 231692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier // since there can exist multiple bump pointer spaces which exist at the same time. 232692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (num_blocks_ > 0) { 233692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier for (Thread* thread : thread_list) { 234dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers total += thread->GetThreadLocalObjectsAllocated(); 235692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 236692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 237692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier return total; 238692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 239692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 240692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartiervoid BumpPointerSpace::RevokeThreadLocalBuffersLocked(Thread* thread) { 241dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers objects_allocated_.FetchAndAdd(thread->GetThreadLocalObjectsAllocated()); 242dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers bytes_allocated_.FetchAndAdd(thread->GetThreadLocalBytesAllocated()); 243e6da9af8dfe0a3e3fbc2be700554f6478380e7b9Mathieu Chartier thread->SetTlab(nullptr, nullptr); 244692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 245692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 246e6da9af8dfe0a3e3fbc2be700554f6478380e7b9Mathieu Chartierbool BumpPointerSpace::AllocNewTlab(Thread* self, size_t bytes) { 247692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier MutexLock mu(Thread::Current(), block_lock_); 248692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier RevokeThreadLocalBuffersLocked(self); 249692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier byte* start = AllocBlock(bytes); 250692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier if (start == nullptr) { 251692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier return false; 252692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier } 253e6da9af8dfe0a3e3fbc2be700554f6478380e7b9Mathieu Chartier self->SetTlab(start, start + bytes); 254692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier return true; 255692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 256692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 257590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} // namespace space 258590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} // namespace gc 259590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} // namespace art 260