/cmds/incident_helper/src/parsers/CpuFreqParser.cpp
C++ | 90 lines | 60 code | 13 blank | 17 comment | 13 complexity | abb256b0b653260b6c6791b6d3b5e24e MD5 | raw file
- /*
- * Copyright (C) 2017 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.
- */
- #define LOG_TAG "incident_helper"
- #include <android/util/ProtoOutputStream.h>
- #include <unistd.h>
- #include "frameworks/base/core/proto/android/os/cpufreq.proto.h"
- #include "ih_util.h"
- #include "CpuFreqParser.h"
- using namespace android::os;
- status_t
- CpuFreqParser::Parse(const int in, const int out) const
- {
- Reader reader(in);
- string line;
- // parse header
- reader.readLine(&line);
- header_t header = parseHeader(line, TAB_DELIMITER);
- if (header.size() < 1) {
- fprintf(stderr, "Bad header: %s\n", line.c_str());
- return BAD_VALUE;
- }
- const int numCpus = (int)header.size() - 1;
- vector<pair<int, long long>> cpucores[numCpus];
- // parse freq and time
- while (reader.readLine(&line)) {
- if (line.empty()) continue;
- record_t record = parseRecord(line, TAB_DELIMITER);
- if (record.size() != header.size()) {
- fprintf(stderr, "Bad line: %s\n", line.c_str());
- continue;
- }
- int freq = toInt(record[0]);
- for (int i=0; i<numCpus; i++) {
- if (strcmp(record[i+1].c_str(), "N/A") == 0) {
- continue;
- }
- cpucores[i].push_back(make_pair(freq, toLongLong(record[i+1])));
- }
- }
- ProtoOutputStream proto;
- long jiffyHz = sysconf(_SC_CLK_TCK);
- proto.write(CpuFreqProto::JIFFY_HZ, (int)jiffyHz);
- for (int i=0; i<numCpus; i++) {
- uint64_t token = proto.start(CpuFreqProto::CPU_FREQS);
- proto.write(CpuFreqProto::Stats::CPU_NAME, header[i+1]);
- for (vector<pair<int, long long>>::iterator it = cpucores[i].begin(); it != cpucores[i].end(); it++) {
- uint64_t stateToken = proto.start(CpuFreqProto::Stats::TIMES);
- proto.write(CpuFreqProto::Stats::TimeInState::STATE_KHZ, it->first);
- proto.write(CpuFreqProto::Stats::TimeInState::TIME_JIFFY, it->second);
- proto.end(stateToken);
- }
- proto.end(token);
- }
- if (!reader.ok(&line)) {
- fprintf(stderr, "Bad read from fd %d: %s\n", in, line.c_str());
- return -1;
- }
- if (!proto.flush(out)) {
- fprintf(stderr, "[%s]Error writing proto back\n", this->name.string());
- return -1;
- }
- fprintf(stderr, "[%s]Proto size: %zu bytes\n", this->name.string(), proto.size());
- return NO_ERROR;
- }