mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
3a9cac4892
- Fix mkdeps.com out of memory error - Remove static memory from __get_cpu_count() - Add support for passing hyphen to cat in cocmd - Change more ZipOS errors from ENOTSUP to EROFS - Specify mem_unit in sysinfo() output on BSD OSes
96 lines
4.1 KiB
C
96 lines
4.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/runtime/sysconf.h"
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/struct/rlimit.h"
|
|
#include "libc/calls/struct/sysinfo.h"
|
|
#include "libc/calls/struct/sysinfo.internal.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/limits.h"
|
|
#include "libc/macros.internal.h"
|
|
#include "libc/runtime/clktck.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/runtime/sysconf.h"
|
|
#include "libc/sysv/consts/_posix.h"
|
|
#include "libc/sysv/consts/limits.h"
|
|
#include "libc/sysv/consts/rlimit.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
#include "libc/thread/thread.h"
|
|
|
|
/**
|
|
* Returns configuration value about system.
|
|
*
|
|
* The following parameters are supported:
|
|
*
|
|
* - `_SC_CLK_TCK` returns number of clock ticks per second
|
|
* - `_SC_ARG_MAX` will perform expensive rlimit calculations
|
|
* - `_SC_PAGESIZE` currently always returns 65536 due to Windows
|
|
* - `_SC_AVPHYS_PAGES` returns average physical memory pages
|
|
* - `_SC_PHYS_PAGES` returns physical memory pages available
|
|
* - `_SC_NPROCESSORS_ONLN` returns number of effective CPUs
|
|
* - `_SC_CHILD_MAX` returns maximum number of processes
|
|
* - `_SC_OPEN_MAX` returns maximum number of open files
|
|
*
|
|
* @return value on success, or -1 w/ errno
|
|
* @raise EINVAL if `name` isn't valid
|
|
*/
|
|
long sysconf(int name) {
|
|
int n;
|
|
switch (name) {
|
|
case _SC_CLK_TCK:
|
|
return CLK_TCK;
|
|
case _SC_PAGESIZE:
|
|
return FRAMESIZE;
|
|
case _SC_ARG_MAX:
|
|
return __get_arg_max();
|
|
case _SC_CHILD_MAX:
|
|
return __get_rlimit(RLIMIT_NPROC);
|
|
case _SC_OPEN_MAX:
|
|
return __get_rlimit(RLIMIT_NOFILE);
|
|
case _SC_NPROCESSORS_CONF:
|
|
case _SC_NPROCESSORS_ONLN:
|
|
return __get_cpu_count();
|
|
case _SC_PHYS_PAGES:
|
|
return __get_phys_pages();
|
|
case _SC_AVPHYS_PAGES:
|
|
return __get_avphys_pages();
|
|
case _SC_THREADS:
|
|
return _POSIX_THREADS;
|
|
case _SC_THREAD_DESTRUCTOR_ITERATIONS:
|
|
return PTHREAD_DESTRUCTOR_ITERATIONS;
|
|
case _SC_THREAD_KEYS_MAX:
|
|
return PTHREAD_KEYS_MAX;
|
|
case _SC_THREAD_STACK_MIN:
|
|
return PTHREAD_STACK_MIN;
|
|
case _SC_THREAD_THREADS_MAX:
|
|
return LONG_MAX;
|
|
case _SC_LINE_MAX:
|
|
return _POSIX2_LINE_MAX;
|
|
case _SC_MONOTONIC_CLOCK:
|
|
return _POSIX_MONOTONIC_CLOCK;
|
|
case _SC_HOST_NAME_MAX:
|
|
return _POSIX_HOST_NAME_MAX;
|
|
case _SC_SPAWN:
|
|
return _POSIX_SPAWN;
|
|
case _SC_SYMLOOP_MAX:
|
|
return _POSIX_SYMLOOP_MAX;
|
|
default:
|
|
return einval();
|
|
}
|
|
}
|