edaaef601d
When producing error and warning messages, libgfortran writes a message by using many system calls. By using vectored writes (the POSIX writev function) when available and feasible to use without major surgery, we reduce the chance that output gets intermingled with other output to stderr. In practice, this is done by introducing a new function estr_writev in addition to the existing estr_write. In order to use this, the old st_vprintf is removed, replaced by direct calls of vsnprintf, allowing more message batching. Regtested on x86_64-pc-linux-gnu. libgfortran/ChangeLog: 2018-09-21 Janne Blomqvist <jb@gcc.gnu.org> * config.h.in: Regenerated. * configure: Regenerated. * configure.ac: Check for writev and sys/uio.h. * libgfortran.h: Include sys/uio.h. (st_vprintf): Remove prototype. (struct iovec): Define if not available. (estr_writev): New prototype. * runtime/backtrace.c (error_callback): Use estr_writev. * runtime/error.c (ST_VPRINTF_SIZE): Remove. (estr_writev): New function. (st_vprintf): Remove. (gf_vsnprintf): New function. (ST_ERRBUF_SIZE): New macro. (st_printf): Use vsnprintf. (os_error): Use estr_writev. (runtime_error): Use vsnprintf and estr_writev. (runtime_error_at): Likewise. (runtime_warning_at): Likewise. (internal_error): Use estr_writev. (generate_error_common): Likewise. (generate_warning): Likewise. (notify_std): Likewise. * runtime/pause.c (pause_string): Likewise. * runtime/stop.c (report_exception): Likewise. (stop_string): Likewise. (error_stop_string): Likewise. From-SVN: r264487
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/* Implementation of the PAUSE statement.
|
|
Copyright (C) 2002-2018 Free Software Foundation, Inc.
|
|
Contributed by Paul Brook <paul@nowt.org>
|
|
|
|
This file is part of the GNU Fortran runtime library (libgfortran).
|
|
|
|
Libgfortran is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 3 of the License, or (at your option) any later version.
|
|
|
|
Libgfortran 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 General Public License for more details.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include "libgfortran.h"
|
|
#include <string.h>
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
|
|
static void
|
|
do_pause (void)
|
|
{
|
|
char buff[4];
|
|
estr_write ("To resume execution, type go. "
|
|
"Other input will terminate the job.\n");
|
|
|
|
fgets(buff, 4, stdin);
|
|
if (strncmp(buff, "go\n", 3) != 0)
|
|
stop_string ('\0', 0, false);
|
|
estr_write ("RESUMED\n");
|
|
}
|
|
|
|
/* A numeric PAUSE statement. */
|
|
|
|
extern void pause_numeric (GFC_INTEGER_8);
|
|
export_proto(pause_numeric);
|
|
|
|
void
|
|
pause_numeric (GFC_INTEGER_8 code)
|
|
{
|
|
st_printf ("PAUSE %ld\n", (long) code);
|
|
do_pause ();
|
|
}
|
|
|
|
/* A character string or blank PAUSE statement. */
|
|
|
|
extern void pause_string (char *string, size_t len);
|
|
export_proto(pause_string);
|
|
|
|
void
|
|
pause_string (char *string, size_t len)
|
|
{
|
|
struct iovec iov[3];
|
|
|
|
iov[0].iov_base = (char*) "PAUSE ";
|
|
iov[0].iov_len = strlen (iov[0].iov_base);
|
|
iov[1].iov_base = string;
|
|
iov[1].iov_len = len;
|
|
iov[2].iov_base = (char*) "\n";
|
|
iov[2].iov_len = 1;
|
|
estr_writev (iov, 3);
|
|
|
|
do_pause ();
|
|
}
|