Log temperature during OTA update
Log the maximum temperature as well as the start/end temperature of an
update to last_install. Check the temperature at the end of each
block_image_update(verify). To get the maximum temp, we iterate through
/sys/class/thermal/thermal_zone*/temp and find the maximum value
present.
Bug: 32518487
Test: temperature logs in last_install
Change-Id: Iaf22a9fbc5b18611bbc5320ffea995417872e514
diff --git a/install.cpp b/install.cpp
index 7cef44a..0a2fa3c 100644
--- a/install.cpp
+++ b/install.cpp
@@ -26,11 +26,15 @@
#include <sys/wait.h>
#include <unistd.h>
+#include <algorithm>
#include <chrono>
+#include <condition_variable>
#include <functional>
#include <limits>
#include <map>
+#include <mutex>
#include <string>
+#include <thread>
#include <vector>
#include <android-base/file.h>
@@ -46,10 +50,13 @@
#include "error_code.h"
#include "minui/minui.h"
#include "otautil/SysUtil.h"
+#include "otautil/ThermalUtil.h"
#include "roots.h"
#include "ui.h"
#include "verifier.h"
+using namespace std::chrono_literals;
+
#define ASSUMED_UPDATE_BINARY_NAME "META-INF/com/google/android/update-binary"
static constexpr const char* AB_OTA_PAYLOAD_PROPERTIES = "payload_properties.txt";
static constexpr const char* AB_OTA_PAYLOAD = "payload.bin";
@@ -63,6 +70,8 @@
static constexpr float DEFAULT_FILES_PROGRESS_FRACTION = 0.4;
static constexpr float DEFAULT_IMAGE_PROGRESS_FRACTION = 0.1;
+static std::condition_variable finish_log_temperature;
+
// This function parses and returns the build.version.incremental
static int parse_build_number(const std::string& str) {
size_t pos = str.find('=');
@@ -299,9 +308,19 @@
}
#endif // !AB_OTA_UPDATER
+static void log_max_temperature(int* max_temperature) {
+ CHECK(max_temperature != nullptr);
+ std::mutex mtx;
+ std::unique_lock<std::mutex> lck(mtx);
+ while (finish_log_temperature.wait_for(lck, 20s) == std::cv_status::timeout) {
+ *max_temperature = std::max(*max_temperature, GetMaxValueFromThermalZone());
+ }
+}
+
// If the package contains an update binary, extract it and run it.
static int try_update_binary(const char* path, ZipArchiveHandle zip, bool* wipe_cache,
- std::vector<std::string>& log_buffer, int retry_count) {
+ std::vector<std::string>& log_buffer, int retry_count,
+ int* max_temperature) {
read_source_target_build(zip, log_buffer);
int pipefd[2];
@@ -392,6 +411,8 @@
}
close(pipefd[1]);
+ std::thread temperature_logger(log_max_temperature, max_temperature);
+
*wipe_cache = false;
bool retry_update = false;
@@ -453,6 +474,10 @@
int status;
waitpid(pid, &status, 0);
+
+ finish_log_temperature.notify_one();
+ temperature_logger.join();
+
if (retry_update) {
return INSTALL_RETRY;
}
@@ -466,7 +491,7 @@
static int
really_install_package(const char *path, bool* wipe_cache, bool needs_mount,
- std::vector<std::string>& log_buffer, int retry_count)
+ std::vector<std::string>& log_buffer, int retry_count, int* max_temperature)
{
ui->SetBackground(RecoveryUI::INSTALLING_UPDATE);
ui->Print("Finding update package...\n");
@@ -517,7 +542,7 @@
ui->Print("Retry attempt: %d\n", retry_count);
}
ui->SetEnableReboot(false);
- int result = try_update_binary(path, zip, wipe_cache, log_buffer, retry_count);
+ int result = try_update_binary(path, zip, wipe_cache, log_buffer, retry_count, max_temperature);
ui->SetEnableReboot(true);
ui->Print("\n");
@@ -533,13 +558,17 @@
modified_flash = true;
auto start = std::chrono::system_clock::now();
+ int start_temperature = GetMaxValueFromThermalZone();
+ int max_temperature = start_temperature;
+
int result;
std::vector<std::string> log_buffer;
if (setup_install_mounts() != 0) {
LOG(ERROR) << "failed to set up expected mounts for install; aborting";
result = INSTALL_ERROR;
} else {
- result = really_install_package(path, wipe_cache, needs_mount, log_buffer, retry_count);
+ result = really_install_package(path, wipe_cache, needs_mount, log_buffer, retry_count,
+ &max_temperature);
}
// Measure the time spent to apply OTA update in seconds.
@@ -570,8 +599,21 @@
"time_total: " + std::to_string(time_total),
"retry: " + std::to_string(retry_count),
};
+
+ int end_temperature = GetMaxValueFromThermalZone();
+ max_temperature = std::max(end_temperature, max_temperature);
+ if (start_temperature > 0) {
+ log_buffer.push_back("temperature_start: " + std::to_string(start_temperature));
+ }
+ if (end_temperature > 0) {
+ log_buffer.push_back("temperature_end: " + std::to_string(end_temperature));
+ }
+ if (max_temperature > 0) {
+ log_buffer.push_back("temperature_max: " + std::to_string(max_temperature));
+ }
+
std::string log_content = android::base::Join(log_header, "\n") + "\n" +
- android::base::Join(log_buffer, "\n");
+ android::base::Join(log_buffer, "\n") + "\n";
if (!android::base::WriteStringToFile(log_content, install_file)) {
PLOG(ERROR) << "failed to write " << install_file;
}
diff --git a/otautil/Android.mk b/otautil/Android.mk
index e602f19..f7ca9a9 100644
--- a/otautil/Android.mk
+++ b/otautil/Android.mk
@@ -18,12 +18,16 @@
LOCAL_SRC_FILES := \
SysUtil.cpp \
DirUtil.cpp \
- ZipUtil.cpp
+ ZipUtil.cpp \
+ ThermalUtil.cpp
-LOCAL_STATIC_LIBRARIES := libselinux libbase
+LOCAL_STATIC_LIBRARIES := \
+ libselinux \
+ libbase
LOCAL_MODULE := libotautil
-
-LOCAL_CFLAGS += -Werror -Wall
+LOCAL_CFLAGS := \
+ -Werror \
+ -Wall
include $(BUILD_STATIC_LIBRARY)
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
diff --git a/otautil/ThermalUtil.h b/otautil/ThermalUtil.h
new file mode 100644
index 0000000..43ab559
--- /dev/null
+++ b/otautil/ThermalUtil.h
@@ -0,0 +1,24 @@
+/*
+ * 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.
+ */
+
+#ifndef OTAUTIL_THERMALUTIL_H
+#define OTAUTIL_THERMALUTIL_H
+
+// We can find the temperature reported by all sensors in /sys/class/thermal/thermal_zone*/temp.
+// Their values are in millidegree Celsius; and we will log the maximum one.
+int GetMaxValueFromThermalZone();
+
+#endif // OTAUTIL_THERMALUTIL_H
