Fallback to 100 ticks per second for CPU usage calculation. (#4155)

b/341774149
youtube · Oct 1, 2024 · 31cb72d · 31cb72d
1 parent 8cf0d63
commit 31cb72d
Showing 1 changed file with 4 additions and 6 deletions.
diff --git a/cobalt/base/process/process_metrics_helper.cc b/cobalt/base/process/process_metrics_helper.cc
@@ -62,7 +62,8 @@ double CalculateCPUUsageSeconds(const std::string& utime_string,
 
 // static
 int ProcessMetricsHelper::GetClockTicksPerS() {
-  return clock_ticks_per_s.load();
+  int result = clock_ticks_per_s.load();
+  return result > 0 ? result : 100;
 }
 
 // static
@@ -102,15 +103,12 @@ void ProcessMetricsHelper::PopulateClockTicksPerS() {
 
 // static
 TimeDelta ProcessMetricsHelper::GetCumulativeCPUUsage() {
-  int ticks_per_s = clock_ticks_per_s.load();
-  if (ticks_per_s == 0) return TimeDelta();
-  return GetCPUUsage(FilePath("/proc/self"), ticks_per_s);
+  return GetCPUUsage(FilePath("/proc/self"), GetClockTicksPerS());
 }
 
 // static
 Value ProcessMetricsHelper::GetCumulativeCPUUsagePerThread() {
-  int ticks_per_s = clock_ticks_per_s.load();
-  if (ticks_per_s == 0) return Value();
+  int ticks_per_s = GetClockTicksPerS();
   Value::List cpu_per_thread;
   FileEnumerator file_enum(FilePath("/proc/self/task"), /*recursive=*/false,
                            FileEnumerator::DIRECTORIES);