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Diffstat (limited to 'lang/ifc8/files/cxa_atexit.c')
| -rw-r--r-- | lang/ifc8/files/cxa_atexit.c | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/lang/ifc8/files/cxa_atexit.c b/lang/ifc8/files/cxa_atexit.c deleted file mode 100644 index 5c976e1aed3a..000000000000 --- a/lang/ifc8/files/cxa_atexit.c +++ /dev/null @@ -1,214 +0,0 @@ -/* Based on code marked: */ - -/*- - * Copyright (c) 1990, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Chris Torek. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * from: FreeBSD: src/lib/libc/stdlib/atexit.c,v 1.7 2003/12/19 17:11:20 kan Exp - * - */ - -/* - * Copyright (c) 2004 Marius Strobl <marius@alchemy.franken.de>. - * All rights reserved. - * - * The same license as above applies. If clause 3 of the license in the - * above mentioned file gets removed this file should follow and this - * sentence should get removed. - * - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD: /tmp/pcvs/ports/lang/ifc8/files/Attic/cxa_atexit.c,v 1.1 2004-01-19 14:52:12 maho Exp $"); - -#include <stddef.h> -#include <stdlib.h> -#include <unistd.h> -#include <osreldate.h> - -#if __FreeBSD_version >= 502101 - #error "Not required on this version of FreeBSD." -#endif - -#define ATEXIT_FN_EMPTY 0 -#define ATEXIT_FN_STD 1 -#define ATEXIT_FN_CXA 2 - -/* must be at least 32 to guarantee ANSI conformance */ -#define ATEXIT_SIZE 32 - -extern int __isthreaded; - -#if __FreeBSD_version < 500016 -typedef struct { - volatile long access_lock; - volatile long lock_owner; - volatile char *fname; - volatile int lineno; -} spinlock_t; - -#define _SPINLOCK_INITIALIZER { 0, 0, 0, 0 } - -#define _SPINUNLOCK(_lck) (_lck)->access_lock = 0 -#ifdef _LOCK_DEBUG -#define _SPINLOCK(_lck) _spinlock_debug(_lck, __FILE__, __LINE__) -#else -#define _SPINLOCK(_lck) _spinlock(_lck) -#endif - -static spinlock_t thread_lock = _SPINLOCK_INITIALIZER; - -#define _ATEXIT_LOCK() if (__isthreaded) _SPINLOCK(&thread_lock); -#define _ATEXIT_UNLOCK() if (__isthreaded) _SPINUNLOCK(&thread_lock); -#else -#include <pthread.h> - -static pthread_mutex_t atexit_mutex = PTHREAD_MUTEX_INITIALIZER; - -#define _ATEXIT_LOCK() if (__isthreaded) \ - _pthread_mutex_lock(&atexit_mutex) -#define _ATEXIT_UNLOCK() if (__isthreaded) \ - _pthread_mutex_unlock(&atexit_mutex) -#endif - -struct atexit { - struct atexit *next; /* next in list */ - int ind; /* next index in this table */ - struct atexit_fn { - int fn_type; /* ATEXIT_? from above */ - union { - void (*std_func)(void); - void (*cxa_func)(void *); - } fn_ptr; /* function pointer */ - void *fn_arg; /* argument for CXA callback */ - void *fn_dso; /* shared module handle */ - } fns[ATEXIT_SIZE]; /* the table itself */ -}; - -static struct atexit *__atexit; /* points to head of LIFO stack */ - -/* - * Register the function described by 'fptr' to be called at application - * exit or owning shared object unload time. This is a helper function - * for atexit and __cxa_atexit. - */ -static int -atexit_register(struct atexit_fn *fptr) -{ - static struct atexit __atexit0; /* one guaranteed table */ - struct atexit *p; - - _ATEXIT_LOCK(); - if ((p = __atexit) == NULL) - __atexit = p = &__atexit0; - else while (p->ind >= ATEXIT_SIZE) { - struct atexit *old__atexit; - old__atexit = __atexit; - _ATEXIT_UNLOCK(); - if ((p = (struct atexit *)malloc(sizeof(*p))) == NULL) - return (-1); - _ATEXIT_LOCK(); - if (old__atexit != __atexit) { - /* Lost race, retry operation */ - _ATEXIT_UNLOCK(); - free(p); - _ATEXIT_LOCK(); - p = __atexit; - continue; - } - p->ind = 0; - p->next = __atexit; - __atexit = p; - } - p->fns[p->ind++] = *fptr; - _ATEXIT_UNLOCK(); - return 0; -} - -/* - * Register a function to be performed at exit or when an shared object - * with given dso handle is unloaded dynamically. - */ -int -__cxa_atexit(void (*func)(void *), void *arg, void *dso) -{ - struct atexit_fn fn; - int error; - - fn.fn_type = ATEXIT_FN_CXA; - fn.fn_ptr.cxa_func = func;; - fn.fn_arg = arg; - fn.fn_dso = dso; - - error = atexit_register(&fn); - return (error); -} - -/* - * Call all handlers registered with __cxa_atexit for the shared - * object owning 'dso'. Note: if 'dso' is NULL, then all remaining - * handlers are called. - */ -void -__cxa_finalize(void *dso) -{ - struct atexit *p; - struct atexit_fn fn; - int n; - - _ATEXIT_LOCK(); - for (p = __atexit; p; p = p->next) { - for (n = p->ind; --n >= 0;) { - if (p->fns[n].fn_type == ATEXIT_FN_EMPTY) - continue; /* already been called */ - if (dso != NULL && dso != p->fns[n].fn_dso) - continue; /* wrong DSO */ - fn = p->fns[n]; - /* - Mark entry to indicate that this particular handler - has already been called. - */ - p->fns[n].fn_type = ATEXIT_FN_EMPTY; - _ATEXIT_UNLOCK(); - - /* Call the function of correct type. */ - if (fn.fn_type == ATEXIT_FN_CXA) - fn.fn_ptr.cxa_func(fn.fn_arg); - else if (fn.fn_type == ATEXIT_FN_STD) - fn.fn_ptr.std_func(); - _ATEXIT_LOCK(); - } - } - _ATEXIT_UNLOCK(); -} |