mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-10 07:32:41 +00:00
8bfd56b59e
Now that these functions are behind _COSMO_SOURCE there's no reason for having the ugly underscore anymore. To use these functions, you need to pass -mcosmo to cosmocc.
79 lines
3.2 KiB
C
79 lines
3.2 KiB
C
/*-*- 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 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/intrin/bsf.h"
|
|
#include "libc/intrin/cxaatexit.internal.h"
|
|
#include "libc/intrin/strace.internal.h"
|
|
#include "libc/intrin/weaken.h"
|
|
#include "libc/mem/mem.h"
|
|
#include "libc/runtime/runtime.h"
|
|
|
|
/**
|
|
* Triggers global destructors.
|
|
*
|
|
* They're called in LIFO order. If a destructor adds more destructors,
|
|
* then those destructors will be called immediately following, before
|
|
* iteration continues.
|
|
*
|
|
* @param pred can be null to match all
|
|
*/
|
|
void __cxa_finalize(void *pred) {
|
|
void *fp, *arg;
|
|
unsigned i, mask;
|
|
struct CxaAtexitBlock *b, *b2;
|
|
StartOver:
|
|
__cxa_lock();
|
|
StartOverLocked:
|
|
if ((b = __cxa_blocks.p)) {
|
|
for (;;) {
|
|
mask = b->mask;
|
|
while (mask) {
|
|
i = bsf(mask);
|
|
mask &= ~(1u << i);
|
|
if (!pred || pred == b->p[i].pred) {
|
|
b->mask &= ~(1u << i);
|
|
if ((fp = b->p[i].fp)) {
|
|
arg = b->p[i].arg;
|
|
__cxa_unlock();
|
|
STRACE("__cxa_finalize(%t, %p)", fp, arg);
|
|
((void (*)(void *))fp)(arg);
|
|
goto StartOver;
|
|
}
|
|
}
|
|
}
|
|
if (!pred) {
|
|
b2 = b->next;
|
|
if (b2) {
|
|
if (_weaken(free)) {
|
|
_weaken(free)(b);
|
|
}
|
|
}
|
|
__cxa_blocks.p = b2;
|
|
goto StartOverLocked;
|
|
} else {
|
|
if (b->next) {
|
|
b = b->next;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
__cxa_unlock();
|
|
}
|