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Fix small matters and improve sysconf()

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- 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
This commit is contained in:
Justine Tunney 2023-08-17 00:25:01 -07:00
parent eebc24b9cd
commit 3a9cac4892
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GPG key ID: BE714B4575D6E328
55 changed files with 411 additions and 262 deletions
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63
libc/runtime/sysconf.c
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@ -17,10 +17,21 @@
│ 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.
@ -28,30 +39,58 @@
* The following parameters are supported:
*
* - `_SC_CLK_TCK` returns number of clock ticks per second
* - `_SC_ARG_MAX` currently always returns 32768 due to Windows
* - `_SC_ARG_MAX` will perform expensive rlimit calculations
* - `_SC_PAGESIZE` currently always returns 65536 due to Windows
* - `_SC_NPROCESSORS_ONLN` returns number of CPUs in the system
* - `_SC_OPEN_MAX` returns maximum number of open files
* - `_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_ARG_MAX:
return _ARG_MAX;
case _SC_CHILD_MAX:
return _GetResourceLimit(RLIMIT_NPROC);
case _SC_CLK_TCK:
return CLK_TCK;
case _SC_OPEN_MAX:
return _GetMaxFd();
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:
n = _getcpucount();
return n > 0 ? n : -1;
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 -1;
return einval();
}
}