mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-15 19:09:58 +08:00
4dc0c0c4e5
* libc/include/stdio.h: Add new reentrant I/O prototypes for
read/write functions. Change getc/putc macros to have reentrant underlying
macros/functions. This includes __sgetc_raw_r, __sgetc_r, and __sputc_r.
* libc/stdio/fgetc.c: Fix and/or add reentrant version to call
new reentrant I/O functions/macros for reading/writing.
* libc/stdio/fgets.c: Ditto.
* libc/stdio/fputc.c: Ditto.
* libc/stdio/fputs.c: Ditto.
* libc/stdio/fread.c: Ditto.
* libc/stdio/fseek.c: Ditto.
* libc/stdio64/fseeko64.c: Ditto.
* libc/stdio/fwrite.c: Ditto.
* libc/stdio/getc.c: Ditto.
* libc/stdio/getc_u.c: Ditto.
* libc/stdio/getchar.c: Ditto.
* libc/stdio/getchar_u.c: Ditto.
* libc/stdio/putc.c: Ditto.
* libc/stdio/putc_u.c: Ditto.
* libc/stdio/putchar.c: Ditto.
* libc/stdio/puts.c: Ditto.
* libc/stdio/vfprintf.c: Ditto.
* libc/stdio/vfscanf.c: Ditto.
* libc/stdio/fvwrite.c: Change __sfvwrite into reentrant __sfvwrite_r.
Change all previous callers of __sfvwrite. Set errno to EBADF and
set error flag on if attempt is made to write to file that does not
allow writing.
* libc/stdio/fvwrite.h: Fix new reentrant prototypes.
* libc/stdio/local.h: Ditto.
* libc/stdio/refill.c: Turn __srefill into reentrant __srefill_r.
Set errno to EBADF and the error flag on if attempt is made to
read unreadable file. Change all previous callers of __srefill.
* libc/stdio/rget.c
* libc/stdio/wbuf.c: Turn __swbuf into reentrant __swbuf_r. Change
all previous callers of __swbuf.
* libc/sys/linux/machine/i386/huge_val.h: Ifdef out file contents since
huge value macros are already defined correctly for i386 by <math.h>.
91 lines
2.6 KiB
C
91 lines
2.6 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
|
|
<<getc_unlocked>>---non-thread-safe version of getc (macro)
|
|
|
|
INDEX
|
|
getc_unlocked
|
|
INDEX
|
|
_getc_unlocked_r
|
|
|
|
POSIX_SYNOPSIS
|
|
#include <stdio.h>
|
|
int getc_unlocked(FILE *<[fp]>);
|
|
|
|
#include <stdio.h>
|
|
int _getc_unlocked_r(FILE *<[fp]>);
|
|
|
|
DESCRIPTION
|
|
<<getc_unlocked>> is a non-thread-safe version of <<getc>> declared in
|
|
<<stdio.h>>. <<getc_unlocked>> may only safely be used within a scope
|
|
protected by flockfile() (or ftrylockfile()) and funlockfile(). These
|
|
functions may safely be used in a multi-threaded program if and only
|
|
if they are called while the invoking thread owns the ( FILE *)
|
|
object, as is the case after a successful call to the flockfile() or
|
|
ftrylockfile() functions. If threads are disabled, then
|
|
<<getc_unlocked>> is equivalent to <<getc>>.
|
|
|
|
The <<_getc_unlocked_r>> function is simply the reentrant version of
|
|
<<get_unlocked>> which passes an additional reentrancy structure pointer
|
|
argument: <[ptr]>.
|
|
|
|
RETURNS
|
|
See <<getc>>.
|
|
|
|
PORTABILITY
|
|
POSIX 1003.1 requires <<getc_unlocked>>. <<getc_unlocked>> may be
|
|
implemented as a macro, so arguments should not have side-effects.
|
|
|
|
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
|
|
<<lseek>>, <<read>>, <<sbrk>>, <<write>>. */
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "%W% (Berkeley) %G%";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <_ansi.h>
|
|
#include <stdio.h>
|
|
|
|
/*
|
|
* A subroutine version of the macro getc_unlocked.
|
|
*/
|
|
|
|
#undef getc_unlocked
|
|
|
|
int
|
|
_DEFUN(_getc_unlocked_r, (ptr, fp),
|
|
struct _reent *ptr _AND
|
|
register FILE *fp)
|
|
{
|
|
/* CHECK_INIT is called (eventually) by __srefill_r. */
|
|
|
|
return __sgetc_r (ptr, fp);
|
|
}
|
|
|
|
#ifndef _REENT_ONLY
|
|
|
|
int
|
|
_DEFUN(getc_unlocked, (fp),
|
|
register FILE *fp)
|
|
{
|
|
return __sgetc_r (_REENT, fp);
|
|
}
|
|
|
|
#endif /* !_REENT_ONLY */
|