Merge "Log temperature during OTA update" am: bc2c51a97f am: 1d7e500bfc
am: 556ca4e301
Change-Id: Ib75bdbee801b1caa2ff7b94b174feae1f7d85688
(cherry picked from commit 6ccd0b780fe0953bcea4c538fe2c0a1f2b9f5af2)
diff --git a/otautil/ThermalUtil.cpp b/otautil/ThermalUtil.cpp
new file mode 100644
index 0000000..13d3643
--- /dev/null
+++ b/otautil/ThermalUtil.cpp
@@ -0,0 +1,80 @@
+/*
+ * 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.
+ */
+
+#include "ThermalUtil.h"
+
+#include <dirent.h>
+#include <stdio.h>
+
+#include <algorithm>
+#include <string>
+#include <vector>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/parseint.h>
+#include <android-base/strings.h>
+
+static constexpr auto THERMAL_PREFIX = "/sys/class/thermal/";
+
+static int thermal_filter(const dirent* de) {
+ if (android::base::StartsWith(de->d_name, "thermal_zone")) {
+ return 1;
+ }
+ return 0;
+}
+
+static std::vector<std::string> InitThermalPaths() {
+ dirent** namelist;
+ int n = scandir(THERMAL_PREFIX, &namelist, thermal_filter, alphasort);
+ if (n == -1) {
+ PLOG(ERROR) << "Failed to scandir " << THERMAL_PREFIX;
+ return {};
+ }
+ if (n == 0) {
+ LOG(ERROR) << "Failed to find CPU thermal info in " << THERMAL_PREFIX;
+ return {};
+ }
+
+ std::vector<std::string> thermal_paths;
+ while (n--) {
+ thermal_paths.push_back(THERMAL_PREFIX + std::string(namelist[n]->d_name) + "/temp");
+ free(namelist[n]);
+ }
+ free(namelist);
+ return thermal_paths;
+}
+
+int GetMaxValueFromThermalZone() {
+ static std::vector<std::string> thermal_paths = InitThermalPaths();
+ int max_temperature = -1;
+ for (const auto& path : thermal_paths) {
+ std::string content;
+ if (!android::base::ReadFileToString(path, &content)) {
+ PLOG(WARNING) << "Failed to read " << path;
+ continue;
+ }
+
+ int temperature;
+ if (!android::base::ParseInt(android::base::Trim(content), &temperature)) {
+ LOG(WARNING) << "Failed to parse integer in " << content;
+ continue;
+ }
+ max_temperature = std::max(temperature, max_temperature);
+ }
+ LOG(INFO) << "current maximum temperature: " << max_temperature;
+ return max_temperature;
+}
\ No newline at end of file