mirror of
https://github.com/jart/cosmopolitan.git
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62 lines
2.7 KiB
C
62 lines
2.7 KiB
C
/*-*- 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 2023 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/dce.h"
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#include "libc/intrin/weaken.h"
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#include "libc/str/str.h"
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#include "libc/thread/tls.h"
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#include "third_party/nsync/mu.h"
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/**
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* @fileoverview r/w lock for maanging windows file inheritence
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*/
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static nsync_mu __hand_mu;
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void __hand_init(void) {
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if (!SupportsWindows()) return;
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bzero(&__hand_mu, sizeof(__hand_mu));
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}
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void __hand_rlock(void) {
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if (!IsWindows()) return;
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if (_weaken(nsync_mu_rlock) && __threaded) {
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_weaken(nsync_mu_rlock)(&__hand_mu);
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}
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}
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void __hand_runlock(void) {
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if (!IsWindows()) return;
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if (_weaken(nsync_mu_runlock) && __threaded) {
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_weaken(nsync_mu_runlock)(&__hand_mu);
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}
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}
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void __hand_lock(void) {
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if (!IsWindows()) return;
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if (_weaken(nsync_mu_lock) && __threaded) {
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_weaken(nsync_mu_lock)(&__hand_mu);
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}
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}
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void __hand_unlock(void) {
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if (!IsWindows()) return;
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if (_weaken(nsync_mu_unlock) && __threaded) {
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_weaken(nsync_mu_unlock)(&__hand_mu);
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}
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}
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