mirror of
https://github.com/jart/cosmopolitan.git
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82 lines
4.1 KiB
C
82 lines
4.1 KiB
C
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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 2021 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/rusage.h"
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#include "libc/log/log.h"
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#include "libc/math.h"
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#include "libc/runtime/clktck.h"
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#include "libc/stdio/append.internal.h"
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/**
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* Generates process resource usage report.
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*/
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void AppendResourceReport(char **b, struct rusage *ru, const char *nl) {
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long utime, stime;
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long double ticks;
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if (ru->ru_maxrss) {
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(appendf)(b, "ballooned to %,ldkb in size%s", ru->ru_maxrss, nl);
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}
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if ((utime = ru->ru_utime.tv_sec * 1000000 + ru->ru_utime.tv_usec) |
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(stime = ru->ru_stime.tv_sec * 1000000 + ru->ru_stime.tv_usec)) {
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ticks = ceill((long double)(utime + stime) / (1000000.L / CLK_TCK));
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(appendf)(b, "needed %,ldµs cpu (%d%% kernel)%s", utime + stime,
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(int)((long double)stime / (utime + stime) * 100), nl);
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if (ru->ru_idrss) {
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(appendf)(b, "needed %,ldkb memory on average%s",
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lroundl(ru->ru_idrss / ticks), nl);
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}
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if (ru->ru_isrss) {
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(appendf)(b, "needed %,ldkb stack on average%s",
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lroundl(ru->ru_isrss / ticks), nl);
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}
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if (ru->ru_ixrss) {
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(appendf)(b, "mapped %,ldkb shared on average%s",
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lroundl(ru->ru_ixrss / ticks), nl);
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}
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}
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if (ru->ru_minflt || ru->ru_majflt) {
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(appendf)(b, "caused %,ld page faults (%d%% memcpy)%s",
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ru->ru_minflt + ru->ru_majflt,
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(int)((long double)ru->ru_minflt /
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(ru->ru_minflt + ru->ru_majflt) * 100),
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nl);
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}
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if (ru->ru_nvcsw + ru->ru_nivcsw > 1) {
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(appendf)(
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b, "%,ld context switches (%d%% consensual)%s",
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ru->ru_nvcsw + ru->ru_nivcsw,
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(int)((long double)ru->ru_nvcsw / (ru->ru_nvcsw + ru->ru_nivcsw) * 100),
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nl);
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}
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if (ru->ru_msgrcv || ru->ru_msgsnd) {
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(appendf)(b, "received %,ld message%s and sent %,ld%s", ru->ru_msgrcv,
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ru->ru_msgrcv == 1 ? "" : "s", ru->ru_msgsnd, nl);
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}
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if (ru->ru_inblock || ru->ru_oublock) {
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(appendf)(b, "performed %,ld read%s and %,ld write i/o operations%s",
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ru->ru_inblock, ru->ru_inblock == 1 ? "" : "s", ru->ru_oublock,
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nl);
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}
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if (ru->ru_nsignals) {
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(appendf)(b, "received %,ld signals%s", ru->ru_nsignals, nl);
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}
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if (ru->ru_nswap) {
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(appendf)(b, "got swapped %,ld times%s", ru->ru_nswap, nl);
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}
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}
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