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/*
* Copyright (C) 2021 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 "RecordFilter.h"
#include "environment.h"
#include "utils.h"
namespace simpleperf {
bool RecordFilter::ParseOptions(OptionValueMap& options) {
for (bool exclude : {true, false}) {
std::string prefix = exclude ? "--exclude-" : "--include-";
for (const OptionValue& value : options.PullValues(prefix + "pid")) {
if (auto pids = GetTidsFromString(*value.str_value, false); pids) {
AddPids(pids.value(), exclude);
} else {
return false;
}
}
for (const OptionValue& value : options.PullValues(prefix + "tid")) {
if (auto tids = GetTidsFromString(*value.str_value, false); tids) {
AddTids(tids.value(), exclude);
} else {
return false;
}
}
for (const OptionValue& value : options.PullValues(prefix + "process-name")) {
AddProcessNameRegex(*value.str_value, exclude);
}
for (const OptionValue& value : options.PullValues(prefix + "thread-name")) {
AddThreadNameRegex(*value.str_value, exclude);
}
for (const OptionValue& value : options.PullValues(prefix + "uid")) {
if (auto uids = ParseUintVector<uid_t>(*value.str_value); uids) {
AddUids(uids.value(), exclude);
} else {
return false;
}
}
}
return true;
}
void RecordFilter::AddPids(const std::set<pid_t>& pids, bool exclude) {
RecordFilterCondition& cond = GetCondition(exclude);
cond.used = true;
cond.pids.insert(pids.begin(), pids.end());
}
void RecordFilter::AddTids(const std::set<pid_t>& tids, bool exclude) {
RecordFilterCondition& cond = GetCondition(exclude);
cond.used = true;
cond.tids.insert(tids.begin(), tids.end());
}
void RecordFilter::AddProcessNameRegex(const std::string& process_name, bool exclude) {
RecordFilterCondition& cond = GetCondition(exclude);
cond.used = true;
cond.process_name_regs.emplace_back(process_name, std::regex::optimize);
}
void RecordFilter::AddThreadNameRegex(const std::string& thread_name, bool exclude) {
RecordFilterCondition& cond = GetCondition(exclude);
cond.used = true;
cond.thread_name_regs.emplace_back(thread_name, std::regex::optimize);
}
void RecordFilter::AddUids(const std::set<uid_t>& uids, bool exclude) {
RecordFilterCondition& cond = GetCondition(exclude);
cond.used = true;
cond.uids.insert(uids.begin(), uids.end());
}
bool RecordFilter::Check(const SampleRecord* r) {
if (exclude_condition_.used && CheckCondition(r, exclude_condition_)) {
return false;
}
if (include_condition_.used && !CheckCondition(r, include_condition_)) {
return false;
}
return true;
}
void RecordFilter::Clear() {
exclude_condition_ = RecordFilterCondition();
include_condition_ = RecordFilterCondition();
pid_to_uid_map_.clear();
}
bool RecordFilter::CheckCondition(const SampleRecord* r, const RecordFilterCondition& condition) {
if (condition.pids.count(r->tid_data.pid) == 1) {
return true;
}
if (condition.tids.count(r->tid_data.tid) == 1) {
return true;
}
if (!condition.process_name_regs.empty()) {
if (ThreadEntry* process = thread_tree_.FindThread(r->tid_data.pid); process != nullptr) {
if (SearchInRegs(process->comm, condition.process_name_regs)) {
return true;
}
}
}
if (!condition.thread_name_regs.empty()) {
if (ThreadEntry* thread = thread_tree_.FindThread(r->tid_data.tid); thread != nullptr) {
if (SearchInRegs(thread->comm, condition.thread_name_regs)) {
return true;
}
}
}
if (!condition.uids.empty()) {
if (auto uid_value = GetUidForProcess(r->tid_data.pid); uid_value) {
if (condition.uids.count(uid_value.value()) == 1) {
return true;
}
}
}
return false;
}
bool RecordFilter::SearchInRegs(const std::string& s, const std::vector<std::regex>& regs) {
for (auto& reg : regs) {
if (std::regex_search(s, reg)) {
return true;
}
}
return false;
}
std::optional<uid_t> RecordFilter::GetUidForProcess(pid_t pid) {
if (auto it = pid_to_uid_map_.find(pid); it != pid_to_uid_map_.end()) {
return it->second;
}
auto uid = GetProcessUid(pid);
pid_to_uid_map_[pid] = uid;
return uid;
}
} // namespace simpleperf
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