mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-13 00:30:07 +00:00
c81459e7d8
2000-08-24 Ulrich Drepper <drepper@redhat.com> * resolv/res_hconf.c (free_mem): Remove not needed if. * time/tzset.c (free_mem): New function. * string/strsignal.c (free_mem): New function. * inet/inet_ntoa.c (free_mem): New function. * sunrpc/clnt_perr.c (free_mem): New function.
141 lines
3.4 KiB
C
141 lines
3.4 KiB
C
/* Copyright (C) 1991,94,95,96,97,98,99,2000 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
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <libintl.h>
|
|
#include <bits/libc-lock.h>
|
|
|
|
|
|
#ifndef HAVE_GNU_LD
|
|
#define _sys_siglist sys_siglist
|
|
#endif
|
|
|
|
/* Defined in siglist.c. */
|
|
extern const char *const _sys_siglist[];
|
|
static __libc_key_t key;
|
|
|
|
/* If nonzero the key allocation failed and we should better use a
|
|
static buffer than fail. */
|
|
#define BUFFERSIZ 100
|
|
static char local_buf[BUFFERSIZ];
|
|
static char *static_buf;
|
|
|
|
/* Destructor for the thread-specific data. */
|
|
static void init (void);
|
|
static void free_key_mem (void *mem);
|
|
static char *getbuffer (void);
|
|
|
|
|
|
/* Return a string describing the meaning of the signal number SIGNUM. */
|
|
char *
|
|
strsignal (int signum)
|
|
{
|
|
__libc_once_define (static, once);
|
|
const char *desc;
|
|
|
|
/* If we have not yet initialized the buffer do it now. */
|
|
__libc_once (once, init);
|
|
|
|
if (
|
|
#ifdef SIGRTMIN
|
|
(signum >= SIGRTMIN && signum <= SIGRTMAX) ||
|
|
#endif
|
|
signum < 0 || signum >= NSIG || (desc = _sys_siglist[signum]) == NULL)
|
|
{
|
|
char *buffer = getbuffer ();
|
|
int len;
|
|
#ifdef SIGRTMIN
|
|
if (signum >= SIGRTMIN && signum <= SIGRTMAX)
|
|
len = __snprintf (buffer, BUFFERSIZ - 1, _("Real-time signal %d"),
|
|
signum - SIGRTMIN);
|
|
else
|
|
#endif
|
|
len = __snprintf (buffer, BUFFERSIZ - 1, _("Unknown signal %d"),
|
|
signum);
|
|
if (len >= BUFFERSIZ)
|
|
buffer = NULL;
|
|
else
|
|
buffer[len] = '\0';
|
|
|
|
return buffer;
|
|
}
|
|
|
|
return (char *) _(desc);
|
|
}
|
|
|
|
|
|
/* Initialize buffer. */
|
|
static void
|
|
init (void)
|
|
{
|
|
if (__libc_key_create (&key, free_key_mem))
|
|
/* Creating the key failed. This means something really went
|
|
wrong. In any case use a static buffer which is better than
|
|
nothing. */
|
|
static_buf = local_buf;
|
|
}
|
|
|
|
|
|
/* Free the thread specific data, this is done if a thread terminates. */
|
|
static void
|
|
free_key_mem (void *mem)
|
|
{
|
|
free (mem);
|
|
__libc_setspecific (key, NULL);
|
|
}
|
|
|
|
|
|
/* Return the buffer to be used. */
|
|
static char *
|
|
getbuffer (void)
|
|
{
|
|
char *result;
|
|
|
|
if (static_buf != NULL)
|
|
result = static_buf;
|
|
else
|
|
{
|
|
/* We don't use the static buffer and so we have a key. Use it
|
|
to get the thread-specific buffer. */
|
|
result = __libc_getspecific (key);
|
|
if (result == NULL)
|
|
{
|
|
/* No buffer allocated so far. */
|
|
result = malloc (BUFFERSIZ);
|
|
if (result == NULL)
|
|
/* No more memory available. We use the static buffer. */
|
|
result = local_buf;
|
|
else
|
|
__libc_setspecific (key, result);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
static void
|
|
free_mem (void)
|
|
{
|
|
free (static_buf);
|
|
}
|
|
text_set_element (__libc_subfreeres, free_mem);
|