lib/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-12-24 17:51:17 +03:00
Code Activity

2.5-18.1

Browse Source
This commit is contained in:
Jakub Jelinek
2007-07-12 18:26:36 +00:00
parent 7d58530341
commit 0ecb606cb6
6215 changed files with 494638 additions and 305010 deletions
Download Patch File Download Diff File Expand all files Collapse all files

75
stdlib/cxa_atexit.c
View File

@@ -1,4 +1,4 @@
/* Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
/* Copyright (C) 1999, 2001, 2002, 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -16,9 +16,13 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <bits/libc-lock.h>
#include <assert.h>
#include <stdlib.h>
#include <bits/libc-lock.h>
#include "exit.h"
#include <atomic.h>
#include <sysdep.h>
#undef __cxa_atexit
@@ -33,10 +37,14 @@ __cxa_atexit (void (*func) (void *), void *arg, void *d)
if (new == NULL)
return -1;
new->flavor = ef_cxa;
#ifdef PTR_MANGLE
PTR_MANGLE (func);
#endif
new->func.cxa.fn = (void (*) (void *, int)) func;
new->func.cxa.arg = arg;
new->func.cxa.dso_handle = d;
atomic_write_barrier ();
new->flavor = ef_cxa;
return 0;
}
INTDEF(__cxa_atexit)
@@ -48,49 +56,68 @@ __libc_lock_define_initialized (static, lock)
static struct exit_function_list initial;
struct exit_function_list *__exit_funcs = &initial;
uint64_t __new_exitfn_called;
struct exit_function *
__new_exitfn (void)
{
struct exit_function_list *p = NULL;
struct exit_function_list *l;
struct exit_function *r = NULL;
size_t i = 0;
__libc_lock_lock (lock);
for (l = __exit_funcs; l != NULL; l = l->next)
for (l = __exit_funcs; l != NULL; p = l, l = l->next)
{
for (i = 0; i < l->idx; ++i)
if (l->fns[i].flavor == ef_free)
for (i = l->idx; i > 0; --i)
if (l->fns[i - 1].flavor != ef_free)
break;
if (i < l->idx)
if (i > 0)
break;
if (l->idx < sizeof (l->fns) / sizeof (l->fns[0]))
{
i = l->idx++;
break;
}
/* This block is completely unused. */
l->idx = 0;
}
if (l == NULL)
if (l == NULL || i == sizeof (l->fns) / sizeof (l->fns[0]))
{
l = (struct exit_function_list *)
malloc (sizeof (struct exit_function_list));
if (l != NULL)
/* The last entry in a block is used. Use the first entry in
the previous block if it exists. Otherwise create a new one. */
if (p == NULL)
{
l->next = __exit_funcs;
__exit_funcs = l;
l->idx = 1;
i = 0;
assert (l != NULL);
p = (struct exit_function_list *)
calloc (1, sizeof (struct exit_function_list));
if (p != NULL)
{
p->next = __exit_funcs;
__exit_funcs = p;
}
}
if (p != NULL)
{
r = &p->fns[0];
p->idx = 1;
}
}
else
{
/* There is more room in the block. */
r = &l->fns[i];
l->idx = i + 1;
}
/* Mark entry as used, but we don't know the flavor now. */
if (l != NULL)
l->fns[i].flavor = ef_us;
if (r != NULL)
{
r->flavor = ef_us;
++__new_exitfn_called;
}
__libc_lock_unlock (lock);
return l == NULL ? NULL : &l->fns[i];
return r;
}