80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
/*
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* Copyright (C) 2015 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 SIMPLE_PERF_OFFLINE_UNWINDER_H_
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#define SIMPLE_PERF_OFFLINE_UNWINDER_H_
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#include <memory>
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#include <vector>
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#include "perf_regs.h"
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#include "thread_tree.h"
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namespace simpleperf {
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struct ThreadEntry;
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struct UnwindingResult {
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// time used for unwinding, in ns.
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uint64_t used_time;
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enum {
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UNKNOWN_REASON,
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EXCEED_MAX_FRAMES_LIMIT,
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ACCESS_REG_FAILED,
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ACCESS_STACK_FAILED,
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ACCESS_MEM_FAILED,
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FIND_PROC_INFO_FAILED,
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EXECUTE_DWARF_INSTRUCTION_FAILED,
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DIFFERENT_ARCH,
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MAP_MISSING,
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} stop_reason;
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union {
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// for ACCESS_REG_FAILED
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uint64_t regno;
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// for ACCESS_MEM_FAILED and ACCESS_STACK_FAILED
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uint64_t addr;
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} stop_info;
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uint64_t stack_start;
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uint64_t stack_end;
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};
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class OfflineUnwinder {
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public:
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static std::unique_ptr<OfflineUnwinder> Create(bool collect_stat);
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virtual ~OfflineUnwinder() {}
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virtual bool UnwindCallChain(const ThreadEntry& thread, const RegSet& regs, const char* stack,
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size_t stack_size, std::vector<uint64_t>* ips,
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std::vector<uint64_t>* sps) = 0;
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const UnwindingResult& GetUnwindingResult() const {
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return unwinding_result_;
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}
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bool IsCallChainBrokenForIncompleteJITDebugInfo() {
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return is_callchain_broken_for_incomplete_jit_debug_info_;
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}
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protected:
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OfflineUnwinder() {}
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UnwindingResult unwinding_result_;
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bool is_callchain_broken_for_incomplete_jit_debug_info_ = false;
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};
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} // namespace simpleperf
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#endif // SIMPLE_PERF_OFFLINE_UNWINDER_H_
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