mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-15 04:20:28 +08:00
102 lines
3.4 KiB
C
102 lines
3.4 KiB
C
/* Copyright (C) 1991-2024 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <stddef.h>
|
|
#include <sys/resource.h>
|
|
#include <shlib-compat.h>
|
|
|
|
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_33)
|
|
|
|
/* Granularity of the `vm_utime' and `vm_stime' fields of a `struct vtimes'.
|
|
(This is the frequency of the machine's power supply, in Hz.) */
|
|
# define VTIMES_UNITS_PER_SECOND 60
|
|
|
|
struct vtimes
|
|
{
|
|
/* User time used in units of 1/VTIMES_UNITS_PER_SECOND seconds. */
|
|
int vm_utime;
|
|
/* System time used in units of 1/VTIMES_UNITS_PER_SECOND seconds. */
|
|
int vm_stime;
|
|
|
|
/* Amount of data and stack memory used (kilobyte-seconds). */
|
|
unsigned int vm_idsrss;
|
|
/* Amount of text memory used (kilobyte-seconds). */
|
|
unsigned int vm_ixrss;
|
|
/* Maximum resident set size (text, data, and stack) (kilobytes). */
|
|
int vm_maxrss;
|
|
|
|
/* Number of hard page faults (i.e. those that required I/O). */
|
|
int vm_majflt;
|
|
/* Number of soft page faults (i.e. those serviced by reclaiming
|
|
a page from the list of pages awaiting reallocation. */
|
|
int vm_minflt;
|
|
|
|
/* Number of times a process was swapped out of physical memory. */
|
|
int vm_nswap;
|
|
|
|
/* Number of input operations via the file system. Note: This
|
|
and `ru_oublock' do not include operations with the cache. */
|
|
int vm_inblk;
|
|
/* Number of output operations via the file system. */
|
|
int vm_oublk;
|
|
};
|
|
|
|
/* Return the number of 1/VTIMES_UNITS_PER_SECOND-second
|
|
units in the `struct timeval' TV. */
|
|
# define TIMEVAL_TO_VTIMES(tv) \
|
|
((tv.tv_sec * VTIMES_UNITS_PER_SECOND) \
|
|
+ (tv.tv_usec * VTIMES_UNITS_PER_SECOND / 1000000))
|
|
|
|
/* If VT is not NULL, write statistics for WHO into *VT.
|
|
Return 0 for success, -1 for failure. */
|
|
static int
|
|
vtimes_one (struct vtimes *vt, enum __rusage_who who)
|
|
{
|
|
if (vt != NULL)
|
|
{
|
|
struct rusage usage;
|
|
|
|
if (__getrusage (who, &usage) < 0)
|
|
return -1;
|
|
|
|
vt->vm_utime = TIMEVAL_TO_VTIMES (usage.ru_utime);
|
|
vt->vm_stime = TIMEVAL_TO_VTIMES (usage.ru_stime);
|
|
vt->vm_idsrss = usage.ru_idrss + usage.ru_isrss;
|
|
vt->vm_majflt = usage.ru_majflt;
|
|
vt->vm_minflt = usage.ru_minflt;
|
|
vt->vm_nswap = usage.ru_nswap;
|
|
vt->vm_inblk = usage.ru_inblock;
|
|
vt->vm_oublk = usage.ru_oublock;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* If CURRENT is not NULL, write statistics for the current process into
|
|
*CURRENT. If CHILD is not NULL, write statistics for all terminated child
|
|
processes into *CHILD. Returns 0 for success, -1 for failure. */
|
|
int
|
|
__vtimes (struct vtimes *current, struct vtimes *child)
|
|
{
|
|
if (vtimes_one (current, RUSAGE_SELF) < 0
|
|
|| vtimes_one (child, RUSAGE_CHILDREN) < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
compat_symbol (libc, __vtimes, vtimes, GLIBC_2_0);
|
|
|
|
#endif /* SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_33) */
|