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Polyfill sysinfo() a ilttle bit on BSDs
This commit is contained in:
Justine Tunney
parent
897e33ccc4
commit
75832f7379
6 changed files with 103 additions and 12 deletions
23
libc/calls/_timespec_totimeval.c
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23
libc/calls/_timespec_totimeval.c
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@ -0,0 +1,23 @@
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/struct/timeval.h"
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struct timeval _timespec_totimeval(struct timespec ts) {
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return (struct timeval){ts.tv_sec, ts.tv_nsec / 1000};
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}
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23
libc/calls/_timeval_totimespec.c
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libc/calls/_timeval_totimespec.c
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@ -0,0 +1,23 @@
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/struct/timeval.h"
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struct timespec _timeval_totimespec(struct timeval tv) {
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return (struct timespec){tv.tv_sec, tv.tv_usec * 1000};
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}
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@ -185,6 +185,7 @@ o//libc/calls/getcwd-xnu.greg.o: private \
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# division is expensive if not optimized
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o/$(MODE)/libc/calls/_timespec_tomillis.o \
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o/$(MODE)/libc/calls/_timespec_tomicros.o \
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o/$(MODE)/libc/calls/_timespec_totimeval.o \
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o/$(MODE)/libc/calls/_timespec_frommillis.o \
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o/$(MODE)/libc/calls/_timespec_frommicros.o: private \
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OVERRIDE_CFLAGS += \
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@ -1,5 +1,6 @@
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#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_TIMEVAL_H_
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#define COSMOPOLITAN_LIBC_CALLS_STRUCT_TIMEVAL_H_
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#include "libc/calls/struct/timespec.h"
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#include "libc/time/struct/timezone.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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@ -16,6 +17,8 @@ int lutimes(const char *, const struct timeval[2]);
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int utimes(const char *, const struct timeval[2]);
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struct timeval _timeval_add(struct timeval, struct timeval);
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struct timeval _timespec_totimeval(struct timespec);
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struct timespec _timeval_totimespec(struct timeval);
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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0
libc/calls/struct/vmmeter-meta.internal.h
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0
libc/calls/struct/vmmeter-meta.internal.h
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@ -16,36 +16,77 @@
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/strace.internal.h"
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#include "libc/calls/struct/sysinfo.h"
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#include "libc/calls/struct/sysinfo.internal.h"
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#include "libc/calls/struct/timespec.h"
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#include "libc/calls/struct/timeval.h"
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#include "libc/calls/struct/vmmeter-meta.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/macros.internal.h"
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#include "libc/str/str.h"
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#include "libc/sysv/errfuns.h"
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#define CTL_KERN 1
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#define CTL_HW 6
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#define KERN_BOOTTIME 21
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#define HW_PHYSMEM 5
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static int64_t GetUptime(void) {
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if (IsNetbsd()) return 0; // TODO(jart): Why?
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struct timeval x;
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size_t n = sizeof(x);
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int mib[] = {CTL_KERN, KERN_BOOTTIME};
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if (sysctl(mib, ARRAYLEN(mib), &x, &n, 0, 0) == -1) return 0;
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return _timespec_real().tv_sec - x.tv_sec;
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}
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static int64_t GetPhysmem(void) {
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uint64_t x;
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size_t n = sizeof(x);
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int mib[] = {CTL_HW, HW_PHYSMEM};
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if (sysctl(mib, ARRAYLEN(mib), &x, &n, 0, 0) == -1) return 0;
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return x;
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}
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static int sys_sysinfo_bsd(struct sysinfo *info) {
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info->uptime = GetUptime();
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info->totalram = GetPhysmem();
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return 0;
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}
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/**
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* Returns amount of system ram, cores, etc.
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*
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* Only the `totalram` field is supported on all platforms right now.
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* Support is best on Linux. Fields will be set to zero when they're not
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* known.
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*
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* @return 0 on success or -1 w/ errno
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* @error ENOSYS, EFAULT
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* @error EFAULT
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*/
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int sysinfo(struct sysinfo *info) {
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int rc;
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if (IsAsan()) {
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if (info && !__asan_is_valid(info, sizeof(*info))) {
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return efault();
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struct sysinfo x = {0};
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if (IsAsan() && info && !__asan_is_valid(info, sizeof(*info))) {
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rc = efault();
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} else if (!IsWindows()) {
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if (IsLinux()) {
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rc = sys_sysinfo(&x);
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} else {
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rc = sys_sysinfo_bsd(&x);
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}
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}
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bzero(info, sizeof(*info));
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if (!IsWindows()) {
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rc = sys_sysinfo(info);
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} else {
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rc = sys_sysinfo_nt(info);
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rc = sys_sysinfo_nt(&x);
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}
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if (rc != -1) {
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info->procs = MAX(1, info->procs);
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info->mem_unit = MAX(1, info->mem_unit);
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info->totalram = MAX((8 * 1024 * 1024) / info->mem_unit, info->totalram);
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x.procs = MAX(1, x.procs);
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x.mem_unit = MAX(1, x.mem_unit);
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x.totalram = MAX((8 * 1024 * 1024) / x.mem_unit, x.totalram);
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memcpy(info, &x, sizeof(x));
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}
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STRACE("sysinfo(%p) → %d% m", info, rc);
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return rc;
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}
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