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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "rusage.h"
#include <stdexcept>
#include <cerrno>
#include <vespa/vespalib/util/stringfmt.h>
namespace vespalib {
RUsage::RUsage() :
rusage(),
_time(0)
{
ru_utime.tv_sec = 0;
ru_utime.tv_usec = 0;
ru_stime.tv_sec = 0;
ru_stime.tv_usec = 0;
ru_maxrss = 0;
ru_ixrss = 0;
ru_idrss = 0;
ru_isrss = 0;
ru_minflt = 0;
ru_majflt = 0;
ru_nswap = 0;
ru_inblock = 0;
ru_oublock = 0;
ru_msgsnd = 0;
ru_msgrcv = 0;
ru_nsignals = 0;
ru_nvcsw = 0;
ru_nivcsw = 0;
}
RUsage
RUsage::createSelf()
{
return createSelf(vespalib::steady_time());
}
RUsage
RUsage::createChildren()
{
return createChildren(vespalib::steady_time());
}
RUsage
RUsage::createSelf(vespalib::steady_time since)
{
RUsage r;
r._time = vespalib::steady_clock::now() - since;
if (getrusage(RUSAGE_SELF, &r) != 0) {
throw std::runtime_error(vespalib::make_string("getrusage failed with errno = %d", errno).c_str());
}
return r;
}
RUsage
RUsage::createChildren(vespalib::steady_time since)
{
RUsage r;
r._time = vespalib::steady_clock::now() - since;
if (getrusage(RUSAGE_CHILDREN, &r) != 0) {
throw std::runtime_error(vespalib::make_string("getrusage failed with errno = %d", errno).c_str());
}
return r;
}
vespalib::string
RUsage::toString()
{
vespalib::string s;
if (_time != duration::zero()) s += make_string("duration = %1.6f\n", vespalib::to_s(_time));
if (from_timeval(ru_utime) > duration::zero()) s += make_string("user time = %1.6f\n", to_s(from_timeval(ru_utime)));
if (from_timeval(ru_stime) > duration::zero()) s += make_string("system time = %1.6f\n", to_s(from_timeval(ru_stime)));
if (ru_maxrss != 0) s += make_string("ru_maxrss = %ld\n", ru_maxrss);
if (ru_ixrss != 0) s += make_string("ru_ixrss = %ld\n", ru_ixrss);
if (ru_idrss != 0) s += make_string("ru_idrss = %ld\n", ru_idrss);
if (ru_isrss != 0) s += make_string("ru_isrss = %ld\n", ru_isrss);
if (ru_minflt != 0) s += make_string("ru_minflt = %ld\n", ru_minflt);
if (ru_majflt != 0) s += make_string("ru_majflt = %ld\n", ru_majflt);
if (ru_nswap != 0) s += make_string("ru_nswap = %ld\n", ru_nswap);
if (ru_inblock != 0) s += make_string("ru_inblock = %ld\n", ru_inblock);
if (ru_oublock != 0) s += make_string("ru_oublock = %ld\n", ru_oublock);
if (ru_msgsnd != 0) s += make_string("ru_msgsnd = %ld\n", ru_msgsnd);
if (ru_msgrcv != 0) s += make_string("ru_msgrcv = %ld\n", ru_msgrcv);
if (ru_nsignals != 0) s += make_string("ru_nsignals = %ld\n", ru_nsignals);
if (ru_nvcsw != 0) s += make_string("ru_nvcsw = %ld\n", ru_nvcsw);
if (ru_nivcsw != 0) s += make_string("ru_nivcsw = %ld", ru_nivcsw);
return s;
}
RUsage &
RUsage::operator -= (const RUsage & b)
{
_time -= b._time;
ru_utime = ru_utime - b.ru_utime;
ru_stime = ru_stime - b.ru_stime;
ru_maxrss -= b.ru_maxrss;
ru_ixrss -= b.ru_ixrss;
ru_idrss -= b.ru_idrss;
ru_isrss -= b.ru_isrss;
ru_minflt -= b.ru_minflt;
ru_majflt -= b.ru_majflt;
ru_nswap -= b.ru_nswap;
ru_inblock -= b.ru_inblock;
ru_oublock -= b.ru_oublock;
ru_msgsnd -= b.ru_msgsnd;
ru_msgrcv -= b.ru_msgrcv;
ru_nsignals -= b.ru_nsignals;
ru_nvcsw -= b.ru_nvcsw;
ru_nivcsw -= b.ru_nivcsw;
return *this;
}
timeval
operator - (const timeval & a, const timeval & b)
{
timeval tmp;
if (a.tv_usec >= b.tv_usec) {
tmp.tv_usec = a.tv_usec - b.tv_usec;
tmp.tv_sec = a.tv_sec - b.tv_sec;
} else {
tmp.tv_usec = (a.tv_usec + 1000000) - b.tv_usec;
tmp.tv_sec = a.tv_sec - 1 - b.tv_sec;
}
return tmp;
}
RUsage operator -(const RUsage & a, const RUsage & b)
{
RUsage tmp(a);
tmp -= b;
return tmp;
}
}
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