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Fix MODE=tinylinux build

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Justine Tunney 2024-07-06 01:39:15 -07:00
parent 8c645fa1ee
commit 6be030cd7c
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8 changed files with 77 additions and 98 deletions
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101
libc/thread/pthread_atfork.c
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@ -1,101 +0,0 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et 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/atomic.h"
#include "libc/calls/state.internal.h"
#include "libc/cosmo.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/atomic.h"
#include "libc/intrin/dll.h"
#include "libc/intrin/strace.internal.h"
#include "libc/macros.internal.h"
#include "libc/proc/proc.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
#include "libc/thread/posixthread.internal.h"
#include "libc/thread/thread.h"
#include "libc/thread/tls.h"
struct AtFork {
struct AtFork *p[2];
atfork_f f[3];
};
static struct AtForks {
pthread_spinlock_t lock;
struct AtFork *list;
struct AtFork pool[64];
atomic_int allocated;
} _atforks;
static void _pthread_onfork(int i, const char *op) {
struct AtFork *a;
if (!i)
pthread_spin_lock(&_atforks.lock);
for (a = _atforks.list; a; a = a->p[!i]) {
if (a->f[i]) {
STRACE("pthread_atfork(%s, %t)", op, a->f[i]);
a->f[i]();
}
_atforks.list = a;
}
if (i)
pthread_spin_unlock(&_atforks.lock);
}
void _pthread_onfork_prepare(void) {
_pthread_onfork(0, "prepare");
}
void _pthread_onfork_parent(void) {
_pthread_onfork(1, "parent");
}
void _pthread_onfork_child(void) {
_pthread_onfork(2, "child");
}
static struct AtFork *_pthread_atfork_alloc(void) {
int i, n = ARRAYLEN(_atforks.pool);
if (atomic_load_explicit(&_atforks.allocated, memory_order_relaxed) < n &&
(i = atomic_fetch_add(&_atforks.allocated, 1)) < n) {
return _atforks.pool + i;
} else {
return 0;
}
}
int _pthread_atfork(atfork_f prepare, atfork_f parent, atfork_f child) {
int rc;
struct AtFork *a;
if (!(a = _pthread_atfork_alloc()))
return ENOMEM;
a->f[0] = prepare;
a->f[1] = parent;
a->f[2] = child;
pthread_spin_lock(&_atforks.lock);
a->p[0] = 0;
a->p[1] = _atforks.list;
if (_atforks.list)
_atforks.list->p[0] = a;
_atforks.list = a;
pthread_spin_unlock(&_atforks.lock);
rc = 0;
return rc;
}