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