diff options
| -rw-r--r-- | base/process_util_mac.mm | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/base/process_util_mac.mm b/base/process_util_mac.mm index 509828b..9c0a2a4 100644 --- a/base/process_util_mac.mm +++ b/base/process_util_mac.mm @@ -255,8 +255,8 @@ double ProcessMetrics::GetCPUUsage() { kern_return_t kr; - // TODO(thakis): Libtop doesn't use thread info. How can they get away - // without it? + // Libtop explicitly loops over the threads (libtop_pinfo_update_cpu_usage() + // in libtop.c), but this is more concise and gives the same results: task_thread_times_info thread_info_data; mach_msg_type_number_t thread_info_count = TASK_THREAD_TIMES_INFO_COUNT; kr = task_info(task, @@ -307,8 +307,7 @@ double ProcessMetrics::GetCPUUsage() { return 0; // We add time_delta / 2 so the result is rounded. - double cpu = static_cast<double>( - (system_time_delta * 100.0 + time_delta / 2.0) / time_delta); + double cpu = static_cast<double>((system_time_delta * 100.0) / time_delta); last_system_time_ = task_time; last_time_ = time; |