mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-15 19:09:58 +08:00
d0bd3e6f56
* libc/include/sys/_types.h: Include <sys/lock.h> and change
_flock_t to be of type _LOCK_RECURSIVE_T.
* libc/include/sys/reent.h: (_REENT_INIT): Reformat.
(_REENT_INIT_PTR): Ditto. Use memset where appropriate.
(_global_impure_ptr): New declaration.
(_GLOBAL_REENT): Change to be _global_impure_ptr.
* libc/include/sys/stdio.h: Include <sys/lock.h> and
<sys/reent.h>.
(_flockfile)[!_SINGLE_THREAD]: Add code for lock call.
(_funlockfile)[!SINGLE_THREAD]: Ditto.
* libc/reent/impure.c: Set _global_impure_ptr to _impure_ptr.
* libc/stdio/fclose.c: Remove casting of fp lock to
_LOCK_RECURSIVE_T.
* libc/stdio/findfp.c: Ditto.
* libc/stdio/fopen.c: Ditto.
* libc/stdio/freopen.c: Ditto.
* libc/stdio/vfprintf.c: Ditto.
* libc/stdio64/fopen64.c: Ditto.
* libc/stdlib/envlock.c: Add default stubs that use generic
locking code.
* libc/stdlib/mlock.c: Ditto.
Jeff Johnston <jjohnstn@redhat.com>
* libc/sys/linux/sys/_types.h (__flock_mutex_t): New subtype.
(_flock_t): Change to be a struct containing a single member
named mutex which is of type __flock_mutex_t.
120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
/*
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that the above copyright notice and this paragraph are
|
|
* duplicated in all such forms and that any documentation,
|
|
* advertising materials, and other materials related to such
|
|
* distribution and use acknowledge that the software was developed
|
|
* by the University of California, Berkeley. The name of the
|
|
* University may not be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
/*
|
|
FUNCTION
|
|
<<fclose>>---close a file
|
|
|
|
INDEX
|
|
fclose
|
|
INDEX
|
|
_fclose_r
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <stdio.h>
|
|
int fclose(FILE *<[fp]>);
|
|
int _fclose_r(struct _reent *<[reent]>, FILE *<[fp]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <stdio.h>
|
|
int fclose(<[fp]>)
|
|
FILE *<[fp]>;
|
|
|
|
int fclose(<[fp]>)
|
|
struct _reent *<[reent]>
|
|
FILE *<[fp]>;
|
|
|
|
DESCRIPTION
|
|
If the file or stream identified by <[fp]> is open, <<fclose>> closes
|
|
it, after first ensuring that any pending data is written (by calling
|
|
<<fflush(<[fp]>)>>).
|
|
|
|
The alternate function <<_fclose_r>> is a reentrant version.
|
|
The extra argument <[reent]> is a pointer to a reentrancy structure.
|
|
|
|
RETURNS
|
|
<<fclose>> returns <<0>> if successful (including when <[fp]> is
|
|
<<NULL>> or not an open file); otherwise, it returns <<EOF>>.
|
|
|
|
PORTABILITY
|
|
<<fclose>> is required by ANSI C.
|
|
|
|
Required OS subroutines: <<close>>, <<fstat>>, <<isatty>>, <<lseek>>,
|
|
<<read>>, <<sbrk>>, <<write>>.
|
|
*/
|
|
|
|
#include <_ansi.h>
|
|
#include <reent.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/lock.h>
|
|
#include "local.h"
|
|
|
|
int
|
|
_DEFUN(_fclose_r, (rptr, fp),
|
|
struct _reent *rptr _AND
|
|
register FILE * fp)
|
|
{
|
|
int r;
|
|
|
|
if (fp == NULL)
|
|
return (0); /* on NULL */
|
|
|
|
__sfp_lock_acquire ();
|
|
|
|
_flockfile (fp);
|
|
|
|
CHECK_INIT (fp);
|
|
|
|
if (fp->_flags == 0) /* not open! */
|
|
{
|
|
_funlockfile (fp);
|
|
__sfp_lock_release ();
|
|
return (0);
|
|
}
|
|
r = fp->_flags & __SWR ? fflush (fp) : 0;
|
|
if (fp->_close != NULL && (*fp->_close) (fp->_cookie) < 0)
|
|
r = EOF;
|
|
if (fp->_flags & __SMBF)
|
|
_free_r (rptr, (char *) fp->_bf._base);
|
|
if (HASUB (fp))
|
|
FREEUB (fp);
|
|
if (HASLB (fp))
|
|
FREELB (fp);
|
|
fp->_flags = 0; /* release this FILE for reuse */
|
|
_funlockfile (fp);
|
|
#ifndef __SINGLE_THREAD__
|
|
__lock_close_recursive (fp->_lock);
|
|
#endif
|
|
|
|
__sfp_lock_release ();
|
|
|
|
return (r);
|
|
}
|
|
|
|
#ifndef _REENT_ONLY
|
|
|
|
int
|
|
_DEFUN(fclose, (fp),
|
|
register FILE * fp)
|
|
{
|
|
return _fclose_r(_REENT, fp);
|
|
}
|
|
|
|
#endif
|
|
|