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Implement a uniform way to query processor core IDs

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This commit is contained in:
ltrk2 2023-05-24 13:33:05 +00:00
parent e96b25508e
commit f76f989b53
1 changed files with 7 additions and 9 deletions
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16
src/Common/AsynchronousMetrics.cpp
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@ -1041,18 +1041,16 @@ void AsynchronousMetrics::update(TimePoint update_time)
// It doesn't read the EOL itself.
++cpuinfo->position();
if (s.rfind("processor", 0) == 0)
static constexpr std::string_view PROCESSOR = "processor";
if (s.starts_with(PROCESSOR))
{
/// s390x example: processor 0: version = FF, identification = 039C88, machine = 3906
/// non s390x example: processor : 0
if (auto colon = s.find_first_of(':'))
{
#ifdef __s390x__
core_id = std::stoi(s.substr(10)); /// 10: length of "processor" plus 1
#else
core_id = std::stoi(s.substr(colon + 2));
#endif
}
auto core_id_start = std::ssize(PROCESSOR);
while (core_id_start < std::ssize(s) && !std::isdigit(s[core_id_start]))
++core_id_start;
core_id = std::stoi(s.substr(core_id_start));
}
else if (s.rfind("cpu MHz", 0) == 0)
{