mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-18 03:22:40 +00:00
45 lines
2.5 KiB
C
45 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 2021 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/strace.internal.h"
|
|
#include "libc/calls/syscall-sysv.internal.h"
|
|
#include "libc/intrin/describeflags.internal.h"
|
|
#include "libc/runtime/directmap.internal.h"
|
|
#include "libc/runtime/memtrack.internal.h"
|
|
|
|
/**
|
|
* Unmaps memory directly with system.
|
|
*
|
|
* This function bypasses memtrack. Therefore it won't work on Windows,
|
|
* but it works on everything else including bare metal.
|
|
*
|
|
* @asyncsignalsafe
|
|
* @threadsafe
|
|
*/
|
|
int sys_munmap(void *p, size_t n) {
|
|
int rc;
|
|
if (!IsMetal()) {
|
|
rc = __sys_munmap(p, n);
|
|
} else {
|
|
rc = sys_munmap_metal(p, n);
|
|
}
|
|
KERNTRACE("sys_munmap(%p /* %s */, %'zu) → %d", p,
|
|
DescribeFrame((intptr_t)p >> 16), n, rc);
|
|
return rc;
|
|
}
|