59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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sys/resource/getrusage.cpp
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Get resource usage statistics.
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*******************************************************************************/
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#include <sys/resource.h>
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#include <sys/syscall.h>
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#include <errno.h>
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#include <time.h>
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#include <timespec.h>
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static struct timeval timeval_of_timespec(struct timespec ts)
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{
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struct timeval tv;
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tv.tv_sec = ts.tv_sec;
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tv.tv_usec = ts.tv_nsec / 1000;
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return tv;
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}
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extern "C" int getrusage(int who, struct rusage* usage)
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{
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struct tmns tmns;
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if ( timens(&tmns) != 0 )
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return -1;
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if ( who == RUSAGE_SELF )
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{
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usage->ru_utime = timeval_of_timespec(tmns.tmns_utime);
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usage->ru_stime = timeval_of_timespec(tmns.tmns_stime);
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}
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else if ( who == RUSAGE_CHILDREN )
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{
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usage->ru_utime = timeval_of_timespec(tmns.tmns_cutime);
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usage->ru_stime = timeval_of_timespec(tmns.tmns_cstime);
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}
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else
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return errno = EINVAL, -1;
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return 0;
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}
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