95 lines
2.3 KiB
C++
95 lines
2.3 KiB
C++
/* resource.cc: getrusage () and friends.
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Copyright 1996, 1997, 1998, 2000 Cygnus Solutions.
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Written by Steve Chamberlain (sac@cygnus.com), Doug Evans (dje@cygnus.com),
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Geoffrey Noer (noer@cygnus.com) of Cygnus Support.
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Rewritten by Sergey S. Okhapkin (sos@prospect.com.ru)
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include <errno.h>
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#include "winsup.h"
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/* add timeval values */
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static void
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add_timeval (struct timeval *tv1, struct timeval *tv2)
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{
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tv1->tv_sec += tv2->tv_sec;
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tv1->tv_usec += tv2->tv_usec;
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if (tv1->tv_usec >= 1000000)
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{
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tv1->tv_usec -= 1000000;
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tv1->tv_sec++;
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}
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}
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/* add rusage values of r2 to r1 */
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void __stdcall
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add_rusage (struct rusage *r1, struct rusage *r2)
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{
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add_timeval (&r1->ru_utime, &r2->ru_utime);
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add_timeval (&r1->ru_stime, &r2->ru_stime);
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r1->ru_maxrss += r2->ru_maxrss;
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r1->ru_ixrss += r2->ru_ixrss;
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r1->ru_idrss += r2->ru_idrss;
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r1->ru_isrss += r2->ru_isrss;
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r1->ru_minflt += r2->ru_minflt;
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r1->ru_majflt += r2->ru_majflt;
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r1->ru_nswap += r2->ru_nswap;
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r1->ru_inblock += r2->ru_inblock;
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r1->ru_oublock += r2->ru_oublock;
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r1->ru_msgsnd += r2->ru_msgsnd;
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r1->ru_msgrcv += r2->ru_msgrcv;
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r1->ru_nsignals += r2->ru_nsignals;
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r1->ru_nvcsw += r2->ru_nvcsw;
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r1->ru_nivcsw += r2->ru_nivcsw;
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}
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/* FIXME: what about other fields? */
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void __stdcall
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fill_rusage (struct rusage *r, HANDLE h)
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{
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FILETIME creation_time = {0,0};
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FILETIME exit_time = {0,0};
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FILETIME kernel_time = {0,0};
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FILETIME user_time = {0,0};
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struct timeval tv;
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GetProcessTimes (h, &creation_time, &exit_time, &kernel_time, &user_time);
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totimeval (&tv, &kernel_time, 0, 0);
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add_timeval (&r->ru_stime, &tv);
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totimeval (&tv, &user_time, 0, 0);
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add_timeval (&r->ru_utime, &tv);
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}
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extern "C"
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int
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getrusage (int intwho, struct rusage *rusage_in)
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{
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int res = 0;
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struct rusage r;
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if (intwho == RUSAGE_SELF)
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{
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memset (&r, 0, sizeof (r));
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fill_rusage (&r, hMainProc);
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*rusage_in = r;
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}
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else if (intwho == RUSAGE_CHILDREN)
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*rusage_in = myself->rusage_children;
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else
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{
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set_errno (EINVAL);
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res = -1;
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}
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syscall_printf ("%d = getrusage (%d, %p)", res, intwho, rusage_in);
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return res;
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}
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