c1228c7f2b
Combine similar leaks (those with identical stack traces) into a single
leak report, and sort the resulting leaks by total leak size across all
similar leaks and their references.
Bug: 27208635
Change-Id: Ia2bf2ccf3fcbc110d1c7ba60e3b77348d1c63d8d
(cherry picked from commit 7a22e81c20)
89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
/*
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* Copyright (C) 2016 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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#ifndef LIBMEMUNREACHABLE_LEAK_FOLDING_H_
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#define LIBMEMUNREACHABLE_LEAK_FOLDING_H_
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#include "HeapWalker.h"
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class LeakFolding {
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public:
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LeakFolding(Allocator<void> allocator, HeapWalker& heap_walker)
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: allocator_(allocator), heap_walker_(heap_walker),
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leak_map_(allocator), leak_graph_(allocator), leak_scc_(allocator) {}
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bool FoldLeaks();
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struct Leak {
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const Range range;
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size_t referenced_count;
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size_t referenced_size;
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};
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bool Leaked(allocator::vector<Leak>& leaked,
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size_t* num_leaks_out, size_t* leak_bytes_out);
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private:
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DISALLOW_COPY_AND_ASSIGN(LeakFolding);
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Allocator<void> allocator_;
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HeapWalker& heap_walker_;
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struct SCCInfo {
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public:
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Node<SCCInfo> node;
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size_t count;
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size_t size;
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size_t cuumulative_count;
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size_t cuumulative_size;
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bool dominator;
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SCCInfo* accumulator;
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SCCInfo(Allocator<SCCInfo> allocator) : node(this, allocator),
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count(0), size(0), cuumulative_count(0), cuumulative_size(0),
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dominator(false), accumulator(nullptr) {}
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private:
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SCCInfo(SCCInfo&&) = delete;
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DISALLOW_COPY_AND_ASSIGN(SCCInfo);
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};
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struct LeakInfo {
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public:
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Node<LeakInfo> node;
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const Range range;
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SCCInfo* scc;
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LeakInfo(const Range& range, Allocator<LeakInfo> allocator)
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: node(this, allocator), range(range),
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scc(nullptr) {}
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private:
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DISALLOW_COPY_AND_ASSIGN(LeakInfo);
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};
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void ComputeDAG();
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void AccumulateLeaks(SCCInfo* dominator);
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allocator::map<Range, LeakInfo, compare_range> leak_map_;
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Graph<LeakInfo> leak_graph_;
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allocator::vector<Allocator<SCCInfo>::unique_ptr> leak_scc_;
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};
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#endif // LIBMEMUNREACHABLE_LEAK_FOLDING_H_
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