cosmopolitan/libc/log/memsummary.c

39 lines
2.5 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/calls/calls.h"
#include "libc/log/log.h"
#include "libc/mem/mem.h"
STATIC_YOINK("ntoa");
void memsummary(int fd) {
struct mallinfo mi;
mi = mallinfo();
(dprintf)(fd,
"arena\t\t%,-12zu\t# space allocated from system\n"
"ordblks\t\t%,-12zu\t# number of free chunks\n"
"hblkhd\t\t%,-12zu\t# space in mmapped regions\n"
"usmblks\t\t%,-12zu\t# maximum total allocated space\n"
"uordblks\t%,-12zu\t# total allocated space\n"
"fordblks\t%,-12zu\t# total free space\n"
"keepcost\t%,-12zu\t# releasable (via malloc_trim) space\n\n",
mi.arena, mi.ordblks, mi.hblkhd, mi.usmblks, mi.uordblks,
mi.fordblks, mi.keepcost);
}