98 lines
2.2 KiB
Plaintext
98 lines
2.2 KiB
Plaintext
/* ACC -- Automatic Compiler Configuration
|
|
|
|
Copyright (C) 1996-2004 Markus Franz Xaver Johannes Oberhumer
|
|
All Rights Reserved.
|
|
|
|
This software is a copyrighted work licensed under the terms of
|
|
the GNU General Public License. Please consult the file "ACC_LICENSE"
|
|
for details.
|
|
|
|
Markus F.X.J. Oberhumer
|
|
<markus@oberhumer.com>
|
|
http://www.oberhumer.com/
|
|
*/
|
|
|
|
|
|
#define __ACCLIB_HSREAD_CH_INCLUDED 1
|
|
#if !defined(ACCLIB_PUBLIC)
|
|
# define ACCLIB_PUBLIC(r,f) r __ACCLIB_FUNCNAME(f)
|
|
#endif
|
|
|
|
|
|
/***********************************************************************
|
|
// huge pointer layer - safe read/write
|
|
// handles partial pipe writes and interrupted system calls
|
|
************************************************************************/
|
|
|
|
ACCLIB_PUBLIC(long, acc_safe_hread) (int fd, acc_hvoid_p buf, long size)
|
|
{
|
|
acc_hbyte_p b = (acc_hbyte_p) buf;
|
|
long l = 0;
|
|
int saved_errno;
|
|
|
|
saved_errno = errno;
|
|
while (l < size)
|
|
{
|
|
long n = size - l;
|
|
#if (ACC_HAVE_MM_HUGE_PTR)
|
|
# define __ACCLIB_REQUIRE_HREAD_CH 1
|
|
errno = 0; n = acc_hread(fd, b, n);
|
|
#elif (ACC_OS_DOS32) && defined(__DJGPP__)
|
|
errno = 0; n = _read(fd, b, n);
|
|
#else
|
|
errno = 0; n = read(fd, b, n);
|
|
#endif
|
|
if (n == 0)
|
|
break;
|
|
if (n < 0) {
|
|
#if defined(EINTR)
|
|
if (errno == (EINTR)) continue;
|
|
#endif
|
|
if (errno == 0) errno = 1;
|
|
return l;
|
|
}
|
|
b += n; l += n;
|
|
}
|
|
errno = saved_errno;
|
|
return l;
|
|
}
|
|
|
|
|
|
ACCLIB_PUBLIC(long, acc_safe_hwrite) (int fd, const acc_hvoid_p buf, long size)
|
|
{
|
|
const acc_hbyte_p b = (const acc_hbyte_p) buf;
|
|
long l = 0;
|
|
int saved_errno;
|
|
|
|
saved_errno = errno;
|
|
while (l < size)
|
|
{
|
|
long n = size - l;
|
|
#if (ACC_HAVE_MM_HUGE_PTR)
|
|
# define __ACCLIB_REQUIRE_HREAD_CH 1
|
|
errno = 0; n = acc_hwrite(fd, b, n);
|
|
#elif (ACC_OS_DOS32) && defined(__DJGPP__)
|
|
errno = 0; n = _write(fd, b, n);
|
|
#else
|
|
errno = 0; n = write(fd, b, n);
|
|
#endif
|
|
if (n == 0)
|
|
break;
|
|
if (n < 0) {
|
|
#if defined(EINTR)
|
|
if (errno == (EINTR)) continue;
|
|
#endif
|
|
if (errno == 0) errno = 1;
|
|
return l;
|
|
}
|
|
b += n; l += n;
|
|
}
|
|
errno = saved_errno;
|
|
return l;
|
|
}
|
|
|
|
|
|
/*
|
|
vi:ts=4:et
|
|
*/
|