086baf981d
Update the backtrace leak tests to share a map since this is the most common way it will be used, and it runs much faster. Remove the CreateNew functions, and references to them. Remove benchmarks of CreateNew functions. Test: Builds, ran new unit tests, ran art tests. Change-Id: I4a25a412f1a74c6d43aebbebbf32ead20ead8f94
122 lines
3.4 KiB
C++
122 lines
3.4 KiB
C++
/*
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* Copyright (C) 2017 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 <stdint.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <backtrace/BacktraceMap.h>
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#include <unwindstack/Elf.h>
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#include <unwindstack/MapInfo.h>
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#include <unwindstack/Maps.h>
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#include "UnwindStackMap.h"
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//-------------------------------------------------------------------------
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UnwindStackMap::UnwindStackMap(pid_t pid) : BacktraceMap(pid) {}
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bool UnwindStackMap::Build() {
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if (pid_ == 0) {
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pid_ = getpid();
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stack_maps_.reset(new unwindstack::LocalMaps);
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} else {
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stack_maps_.reset(new unwindstack::RemoteMaps(pid_));
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}
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// Create the process memory object.
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process_memory_ = unwindstack::Memory::CreateProcessMemory(pid_);
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if (!stack_maps_->Parse()) {
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return false;
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}
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// Iterate through the maps and fill in the backtrace_map_t structure.
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for (auto& map_info : *stack_maps_) {
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backtrace_map_t map;
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map.start = map_info.start;
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map.end = map_info.end;
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map.offset = map_info.offset;
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// Set to -1 so that it is demand loaded.
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map.load_bias = static_cast<uintptr_t>(-1);
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map.flags = map_info.flags;
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map.name = map_info.name;
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maps_.push_back(map);
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}
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return true;
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}
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void UnwindStackMap::FillIn(uintptr_t addr, backtrace_map_t* map) {
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BacktraceMap::FillIn(addr, map);
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if (map->load_bias != static_cast<uintptr_t>(-1)) {
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return;
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}
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// Fill in the load_bias.
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unwindstack::MapInfo* map_info = stack_maps_->Find(addr);
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if (map_info == nullptr) {
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return;
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}
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unwindstack::Elf* elf = map_info->GetElf(process_memory_, true);
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map->load_bias = elf->GetLoadBias();
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}
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std::string UnwindStackMap::GetFunctionName(uintptr_t pc, uintptr_t* offset) {
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*offset = 0;
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unwindstack::Maps* maps = stack_maps();
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// Get the map for this
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unwindstack::MapInfo* map_info = maps->Find(pc);
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if (map_info == nullptr || map_info->flags & PROT_DEVICE_MAP) {
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return "";
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}
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unwindstack::Elf* elf = map_info->GetElf(process_memory(), true);
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std::string name;
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uint64_t func_offset;
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if (!elf->GetFunctionName(elf->GetRelPc(pc, map_info), &name, &func_offset)) {
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return "";
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}
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*offset = func_offset;
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return name;
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}
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std::shared_ptr<unwindstack::Memory> UnwindStackMap::GetProcessMemory() {
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return process_memory_;
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}
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//-------------------------------------------------------------------------
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// BacktraceMap create function.
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//-------------------------------------------------------------------------
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BacktraceMap* BacktraceMap::Create(pid_t pid, bool uncached) {
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BacktraceMap* map;
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if (uncached) {
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// Force use of the base class to parse the maps when this call is made.
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map = new BacktraceMap(pid);
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} else if (pid == getpid()) {
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map = new UnwindStackMap(0);
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} else {
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map = new UnwindStackMap(pid);
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}
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if (!map->Build()) {
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delete map;
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return nullptr;
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}
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return map;
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}
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