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Fix many thread and file descriptor issues on Windows

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The greenbean web server now works nearly perfectly on Windows with over
1000 threads. But some synchronization issues still remain which prevent
us from going over nine thousand.
This commit is contained in:
Justine Tunney 2022-05-20 18:51:41 -07:00
parent 96781d0679
commit 7838edae88
32 changed files with 363 additions and 192 deletions
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42
libc/intrin/_trylock_debug_4.c Normal file
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/*-*- 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 2022 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/bits/weaken.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/lockcmpxchgp.h"
#include "libc/intrin/spinlock.h"
#include "libc/log/log.h"
#include "libc/runtime/internal.h"
#include "libc/runtime/runtime.h"
privileged int _trylock_debug_4(int *lock, const char *lockname,
const char *file, int line, const char *func) {
int owner = 0;
int me = gettid();
if (_lockcmpxchgp(lock, &owner, me)) {
return 0;
} else if (owner != me) {
return owner;
} else {
kprintf("%s:%d: error: lock re-entry on %s in %s()\n", file, line, lockname,
func);
if (weaken(__die)) weaken(__die)();
__restorewintty();
_Exit(1);
}
}