mirror of
https://github.com/jart/cosmopolitan.git
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48 lines
2.5 KiB
C
48 lines
2.5 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 2020 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/log/check.h"
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#include "libc/mem/mem.h"
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#include "tool/build/lib/fds.h"
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int MachineFdAdd(struct MachineFds *mf) {
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int fd;
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struct MachineFdClosed *closed;
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if ((closed = mf->closed)) {
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fd = closed->fd;
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mf->closed = closed->next;
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free(closed);
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} else {
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fd = mf->i;
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if (mf->i++ == mf->n) {
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mf->n = mf->i + (mf->i >> 1);
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mf->p = realloc(mf->p, mf->n * sizeof(*mf->p));
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}
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}
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return fd;
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}
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void MachineFdRemove(struct MachineFds *mf, int fd) {
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struct MachineFdClosed *closed;
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mf->p[fd].cb = NULL;
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if ((closed = malloc(sizeof(struct MachineFdClosed)))) {
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closed->fd = fd;
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closed->next = mf->closed;
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mf->closed = closed;
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}
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}
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