github-actions[bot] commented on code in PR #45284:
URL: https://github.com/apache/doris/pull/45284#discussion_r1879503338
##########
be/src/util/cgroup_util.cpp:
##########
@@ -264,4 +268,126 @@ void CGroupUtil::read_int_metric_from_cgroup_file(
}
}
+Status CGroupUtil::read_string_line_from_cgroup_file(const
std::filesystem::path& file_path,
+ std::string* line_ptr) {
+ std::ifstream file_stream(file_path, std::ios::in);
+ if (!file_stream.is_open()) {
+ return Status::CgroupError("Error open {}", file_path.string());
+ }
+ string line;
+ getline(file_stream, line);
+ if (file_stream.fail() || file_stream.bad()) {
+ return Status::CgroupError("Error reading {}: {}", file_path.string(),
get_str_err_msg());
+ }
+ *line_ptr = line;
+ return Status::OK();
+}
+
+Status CGroupUtil::parse_cpuset_line(std::string cpuset_line, int*
cpu_count_ptr) {
+ if (cpuset_line.empty()) {
+ return Status::CgroupError("cpuset line is empty");
+ }
+ std::vector<string> ranges;
+ boost::split(ranges, cpuset_line, boost::is_any_of(","));
+ int cpu_count = 0;
+
+ for (const std::string& range : ranges) {
+ std::vector<std::string> cpu_values;
+ boost::split(cpu_values, range, boost::is_any_of("-"));
+
+ if (cpu_values.size() == 2) {
+ int start = std::stoi(cpu_values[0]);
+ int end = std::stoi(cpu_values[1]);
+ cpu_count += (end - start) + 1;
+ } else {
+ cpu_count++;
+ }
+ }
+ *cpu_count_ptr = cpu_count;
+ return Status::OK();
+}
+
+int CGroupUtil::get_cgroup_limited_cpu_number(int physical_cores) {
Review Comment:
warning: function 'get_cgroup_limited_cpu_number' exceeds recommended
size/complexity thresholds [readability-function-size]
```cpp
int CGroupUtil::get_cgroup_limited_cpu_number(int physical_cores) {
^
```
<details>
<summary>Additional context</summary>
**be/src/util/cgroup_util.cpp:309:** 81 lines including whitespace and
comments (threshold 80)
```cpp
int CGroupUtil::get_cgroup_limited_cpu_number(int physical_cores) {
^
```
</details>
##########
be/src/util/cgroup_util.cpp:
##########
@@ -264,4 +268,126 @@
}
}
+Status CGroupUtil::read_string_line_from_cgroup_file(const
std::filesystem::path& file_path,
+ std::string* line_ptr) {
+ std::ifstream file_stream(file_path, std::ios::in);
+ if (!file_stream.is_open()) {
+ return Status::CgroupError("Error open {}", file_path.string());
+ }
+ string line;
+ getline(file_stream, line);
+ if (file_stream.fail() || file_stream.bad()) {
+ return Status::CgroupError("Error reading {}: {}", file_path.string(),
get_str_err_msg());
+ }
+ *line_ptr = line;
+ return Status::OK();
+}
+
+Status CGroupUtil::parse_cpuset_line(std::string cpuset_line, int*
cpu_count_ptr) {
+ if (cpuset_line.empty()) {
+ return Status::CgroupError("cpuset line is empty");
+ }
+ std::vector<string> ranges;
+ boost::split(ranges, cpuset_line, boost::is_any_of(","));
+ int cpu_count = 0;
+
+ for (const std::string& range : ranges) {
+ std::vector<std::string> cpu_values;
+ boost::split(cpu_values, range, boost::is_any_of("-"));
+
+ if (cpu_values.size() == 2) {
+ int start = std::stoi(cpu_values[0]);
+ int end = std::stoi(cpu_values[1]);
+ cpu_count += (end - start) + 1;
+ } else {
+ cpu_count++;
+ }
+ }
+ *cpu_count_ptr = cpu_count;
+ return Status::OK();
+}
+
+int CGroupUtil::get_cgroup_limited_cpu_number(int physical_cores) {
+ if (physical_cores <= 0) {
+ return physical_cores;
+ }
+ int ret = physical_cores;
+#if defined(OS_LINUX)
+ if (CGroupUtil::cgroupsv2_enable()) {
+ std::string cgroupv2_process_path = CGroupUtil::cgroupv2_of_process();
+ if (cgroupv2_process_path.empty()) {
+ return ret;
+ }
+ std::filesystem::path current_cgroup_path = (default_cgroups_mount /
cgroupv2_process_path);
+ while (current_cgroup_path != default_cgroups_mount.parent_path()) {
+ std::ifstream cpu_max_file(current_cgroup_path / "cpu.max");
+ if (cpu_max_file.is_open()) {
+ std::string cpu_limit_str;
+ float cpu_period;
+ cpu_max_file >> cpu_limit_str >> cpu_period;
+ if (cpu_limit_str != "max" && cpu_period != 0) {
+ float cpu_limit = std::stof(cpu_limit_str);
+ ret = std::min(static_cast<int>(ceil(cpu_limit /
cpu_period)), ret);
Review Comment:
warning: call to 'ceil' promotes float to double
[performance-type-promotion-in-math-fn]
be/src/util/cgroup_util.cpp:20:
```diff
- #include <fstream>
+ #include <cmath>
+ #include <fstream>
```
```suggestion
ret = std::min(static_cast<int>(std::ceil(cpu_limit /
cpu_period)), ret);
```
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