72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
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/* This file is part of the MPIR Library.
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The MPIR 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
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by the Free Software Foundation; either version 2.1 of the License, or (at
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your option) any later version.
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The MPIR 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 MPIR Library; see the file COPYING.LIB. If not, write
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to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <psapi.h>
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#include <errno.h>
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#include "getrusage.h"
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typedef union file_t
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{ FILETIME ft;
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long long lt;
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} file_t;
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int getrusage(int who, rusage *usage)
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{
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HANDLE proc_hand;
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file_t c_time, x_time, s_time, u_time;
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int cb = 0, err = -1;
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if(who != RUSAGE_SELF)
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{
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errno = (who == RUSAGE_CHILDREN ? ENODATA : EINVAL);
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return err;
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}
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proc_hand = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, GetCurrentProcessId());
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if(GetProcessTimes(proc_hand, &(c_time.ft), &(x_time.ft), &(s_time.ft), &(u_time.ft)))
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{
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PROCESS_MEMORY_COUNTERS ctrs;
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/* The units returned by GetProcessTimes are 100 nanoseconds */
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u_time.lt = (u_time.lt + 5) / 10;
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s_time.lt = (s_time.lt + 5) / 10;
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usage->ru_utime.tv_sec = (long)(u_time.lt / 1000000ll);
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usage->ru_stime.tv_sec = (long)(s_time.lt / 1000000ll);
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usage->ru_utime.tv_usec = (long)(u_time.lt % 1000000ll);
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usage->ru_stime.tv_usec = (long)(s_time.lt % 1000000ll);
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if(GetProcessMemoryInfo(proc_hand, &ctrs, sizeof(ctrs)))
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{
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PERFORMANCE_INFORMATION perf_info;
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GetPerformanceInfo(&perf_info, sizeof(perf_info));
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usage->ru_maxrss = (DWORD) (ctrs.WorkingSetSize / perf_info.PageSize);
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usage->ru_majflt = ctrs.PageFaultCount;
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err = 0;
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}
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}
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if(err)
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errno = EACCES;
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CloseHandle(proc_hand);
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return err;
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}
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