| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "allocator.h" |
| |
| #include <inttypes.h> |
| #include <stdlib.h> |
| |
| #include "atomic.h" |
| #include "base/logging.h" |
| |
| namespace art { |
| |
| class MallocAllocator FINAL : public Allocator { |
| public: |
| explicit MallocAllocator() {} |
| ~MallocAllocator() {} |
| |
| void* Alloc(size_t size) { |
| return calloc(sizeof(uint8_t), size); |
| } |
| |
| void Free(void* p) { |
| free(p); |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(MallocAllocator); |
| }; |
| |
| MallocAllocator g_malloc_allocator; |
| |
| class NoopAllocator FINAL : public Allocator { |
| public: |
| explicit NoopAllocator() {} |
| ~NoopAllocator() {} |
| |
| void* Alloc(size_t size ATTRIBUTE_UNUSED) { |
| LOG(FATAL) << "NoopAllocator::Alloc should not be called"; |
| UNREACHABLE(); |
| } |
| |
| void Free(void* p ATTRIBUTE_UNUSED) { |
| // Noop. |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(NoopAllocator); |
| }; |
| |
| NoopAllocator g_noop_allocator; |
| |
| Allocator* Allocator::GetMallocAllocator() { |
| return &g_malloc_allocator; |
| } |
| |
| Allocator* Allocator::GetNoopAllocator() { |
| return &g_noop_allocator; |
| } |
| |
| namespace TrackedAllocators { |
| |
| // These globals are safe since they don't have any non-trivial destructors. |
| Atomic<size_t> g_bytes_used[kAllocatorTagCount]; |
| volatile size_t g_max_bytes_used[kAllocatorTagCount]; |
| Atomic<uint64_t> g_total_bytes_used[kAllocatorTagCount]; |
| |
| void Dump(std::ostream& os) { |
| if (kEnableTrackingAllocator) { |
| os << "Dumping native memory usage\n"; |
| for (size_t i = 0; i < kAllocatorTagCount; ++i) { |
| uint64_t bytes_used = g_bytes_used[i].LoadRelaxed(); |
| uint64_t max_bytes_used = g_max_bytes_used[i]; |
| uint64_t total_bytes_used = g_total_bytes_used[i].LoadRelaxed(); |
| if (total_bytes_used != 0) { |
| os << static_cast<AllocatorTag>(i) << " active=" << bytes_used << " max=" |
| << max_bytes_used << " total=" << total_bytes_used << "\n"; |
| } |
| } |
| } |
| } |
| |
| } // namespace TrackedAllocators |
| |
| } // namespace art |