re PR fortran/18918 (Eventually support Fortran 2008's coarrays [co-arrays])
2011-03-27 Tobias Burnus <burnus@net-b.de>
PR fortran/18918
* caf/libcaf.h: New - coarray communication library.
* caf/mpi.c: New.
* caf/single.c: New.
From-SVN: r171570
This commit is contained in:
Tobias Burnus
Tobias Burnus
parent
69d523395b
commit
5092eb960c
|
|
@ -1,3 +1,10 @@
|
|||
2011-03-27 Tobias Burnus <burnus@net-b.de>
|
||||
|
||||
PR fortran/18918
|
||||
* caf/libcaf.h: New - coarray communication library.
|
||||
* caf/mpi.c: New.
|
||||
* caf/single.c: New.
|
||||
|
||||
2011-03-23 Jerry DeLisle <jvdelisle@gcc.gnu.org>
|
||||
|
||||
PR libgfortran/48030
|
||||
|
|
|
|||
|
|
@ -0,0 +1,53 @@
|
|||
/* Common declarations for all of GNU Fortran libcaf implementations.
|
||||
Copyright (C) 2011
|
||||
Free Software Foundation, Inc.
|
||||
Contributed by Tobias Burnus <burnus@net-b.de>
|
||||
|
||||
This file is part of the GNU Fortran Coarray Runtime Library (libcaf).
|
||||
|
||||
Libcaf 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, or (at your option)
|
||||
any later version.
|
||||
|
||||
Libcaf 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/>. */
|
||||
|
||||
#ifndef LIBCAF_H
|
||||
#define LIBCAF_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
|
||||
/* Definitions of the Fortran 2008 standard; need to kept in sync with
|
||||
ISO_FORTRAN_ENV, cf. libgfortran.h. */
|
||||
#define STAT_UNLOCKED 0
|
||||
#define STAT_LOCKED 1
|
||||
#define STAT_LOCKED_OTHER_IMAGE 2
|
||||
#define STAT_STOPPED_IMAGE 3
|
||||
|
||||
|
||||
void _gfortran_caf_init (int *, char ***, int *, int *);
|
||||
void _gfortran_caf_finalize (void);
|
||||
|
||||
int _gfortran_caf_sync_all (char *, int);
|
||||
int _gfortran_caf_sync_images (int count, int images[], char *, int);
|
||||
|
||||
void _gfortran_caf_critical (void);
|
||||
void _gfortran_caf_end_critical (void);
|
||||
|
||||
void _gfortran_caf_error_stop_str (const char *, int32_t) __attribute__ ((noreturn));
|
||||
void _gfortran_caf_error_stop (int32_t) __attribute__ ((noreturn));
|
||||
|
||||
#endif /* LIBCAF_H */
|
||||
|
|
@ -0,0 +1,211 @@
|
|||
/* MPI implementation of GNU Fortran Coarray Library
|
||||
Copyright (C) 2011
|
||||
Free Software Foundation, Inc.
|
||||
Contributed by Tobias Burnus <burnus@net-b.de>
|
||||
|
||||
This file is part of the GNU Fortran Coarray Runtime Library (libcaf).
|
||||
|
||||
Libcaf 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, or (at your option)
|
||||
any later version.
|
||||
|
||||
Libcaf 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 "libcaf.h"
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <mpi.h>
|
||||
|
||||
/* Define GFC_CAF_CHECK to enable run-time checking. */
|
||||
/* #define GFC_CAF_CHECK 1 */
|
||||
|
||||
|
||||
static void error_stop (int error) __attribute__ ((noreturn));
|
||||
|
||||
/* Global variables. */
|
||||
static int caf_this_image;
|
||||
static int caf_num_images;
|
||||
static MPI_Win caf_world_window;
|
||||
|
||||
|
||||
/* Initialize coarray program. This routine assumes that no other
|
||||
MPI initialization happened before; otherwise MPI_Initialized
|
||||
had to be used. As the MPI library might modify the command-line
|
||||
arguments, the routine should be called before the run-time
|
||||
libaray is initialized. */
|
||||
|
||||
void
|
||||
_gfortran_caf_init (int *argc, char ***argv, int *this_image, int *num_images)
|
||||
{
|
||||
int flag;
|
||||
|
||||
/* The following is only the case if one does not have a Fortran
|
||||
main program. */
|
||||
MPI_Initialized (&flag);
|
||||
if (!flag)
|
||||
MPI_Init (argc, argv);
|
||||
|
||||
MPI_Comm_rank (MPI_COMM_WORLD, &caf_this_image);
|
||||
*this_image = caf_this_image + 1;
|
||||
MPI_Comm_size (MPI_COMM_WORLD, &caf_num_images);
|
||||
*num_images = caf_num_images;
|
||||
|
||||
/* Obtain window for CRITICAL section locking. */
|
||||
MPI_Win_create (NULL, 0, 1, MPI_INFO_NULL, MPI_COMM_WORLD,
|
||||
&caf_world_window);
|
||||
}
|
||||
|
||||
|
||||
/* Finalize coarray program. Note: This is only called before the
|
||||
program ends; thus the MPI_Initialized status of _gfortran_caf_init
|
||||
does not play a role. */
|
||||
|
||||
void
|
||||
_gfortran_caf_finalize (void)
|
||||
{
|
||||
MPI_Win_free (&caf_world_window);
|
||||
MPI_Finalize ();
|
||||
}
|
||||
|
||||
|
||||
/* SYNC ALL - the return value matches Fortran's STAT argument. */
|
||||
|
||||
int
|
||||
_gfortran_caf_sync_all (char *errmsg, int errmsg_len)
|
||||
{
|
||||
int ierr;
|
||||
ierr = MPI_Barrier (MPI_COMM_WORLD);
|
||||
|
||||
if (ierr && errmsg_len > 0)
|
||||
{
|
||||
const char msg[] = "SYNC ALL failed";
|
||||
int len = ((int) sizeof (msg) > errmsg_len) ? errmsg_len
|
||||
: (int) sizeof (msg);
|
||||
memcpy (errmsg, msg, len);
|
||||
if (errmsg_len > len)
|
||||
memset (&errmsg[len], ' ', errmsg_len-len);
|
||||
}
|
||||
|
||||
/* TODO: Is ierr correct? When should STAT_STOPPED_IMAGE be used? */
|
||||
return ierr;
|
||||
}
|
||||
|
||||
|
||||
/* SYNC IMAGES. Note: SYNC IMAGES(*) is passed as count == -1 while
|
||||
SYNC IMAGES([]) has count == 0. Note further that SYNC IMAGES(*)
|
||||
is not equivalent to SYNC ALL. The return value matches Fortran's
|
||||
STAT argument. */
|
||||
int
|
||||
_gfortran_caf_sync_images (int count, int images[], char *errmsg,
|
||||
int errmsg_len)
|
||||
{
|
||||
int ierr;
|
||||
|
||||
if (count == 0 || (count == 1 && images[0] == caf_this_image))
|
||||
return 0;
|
||||
|
||||
#ifdef GFC_CAF_CHECK
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < count; i++)
|
||||
if (images[i] < 1 || images[i] > caf_num_images)
|
||||
{
|
||||
fprintf (stderr, "COARRAY ERROR: Invalid image index %d to SYNC "
|
||||
"IMAGES", images[i]);
|
||||
error_stop (1);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
/* FIXME: SYNC IMAGES with a nontrivial argument cannot easily be
|
||||
mapped to MPI communicators. Thus, exist early with an error message. */
|
||||
if (count > 0)
|
||||
{
|
||||
fprintf (stderr, "COARRAY ERROR: SYNC IMAGES not yet implemented");
|
||||
error_stop (1);
|
||||
}
|
||||
|
||||
/* Handle SYNC IMAGES(*). */
|
||||
ierr = MPI_Barrier (MPI_COMM_WORLD);
|
||||
|
||||
if (ierr && errmsg_len > 0)
|
||||
{
|
||||
const char msg[] = "SYNC IMAGES failed";
|
||||
int len = ((int) sizeof (msg) > errmsg_len) ? errmsg_len
|
||||
: (int) sizeof (msg);
|
||||
memcpy (errmsg, msg, len);
|
||||
if (errmsg_len > len)
|
||||
memset (&errmsg[len], ' ', errmsg_len-len);
|
||||
}
|
||||
|
||||
/* TODO: Is ierr correct? When should STAT_STOPPED_IMAGE be used? */
|
||||
return ierr;
|
||||
}
|
||||
|
||||
|
||||
/* CRITICAL BLOCK. */
|
||||
|
||||
void
|
||||
_gfortran_caf_critical (void)
|
||||
{
|
||||
MPI_Win_lock (MPI_LOCK_SHARED, 0, 0, caf_world_window);
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
_gfortran_caf_end_critical (void)
|
||||
{
|
||||
MPI_Win_unlock (0, caf_world_window);
|
||||
}
|
||||
|
||||
|
||||
/* ERROR STOP the other images. */
|
||||
|
||||
static void
|
||||
error_stop (int error)
|
||||
{
|
||||
/* FIXME: Shutdown the Fortran RTL to flush the buffer. PR 43849. */
|
||||
/* FIXME: Do some more effort than just MPI_ABORT. */
|
||||
MPI_Abort (MPI_COMM_WORLD, error);
|
||||
|
||||
/* Should be unreachable, but to make sure also call exit. */
|
||||
exit (error);
|
||||
}
|
||||
|
||||
|
||||
/* ERROR STOP function for string arguments. */
|
||||
|
||||
void
|
||||
_gfortran_caf_error_stop_str (const char *string, int32_t len)
|
||||
{
|
||||
fputs ("ERROR STOP ", stderr);
|
||||
while (len--)
|
||||
fputc (*(string++), stderr);
|
||||
fputs ("\n", stderr);
|
||||
|
||||
error_stop (1);
|
||||
}
|
||||
|
||||
|
||||
/* ERROR STOP function for numerical arguments. */
|
||||
|
||||
void
|
||||
_gfortran_caf_error_stop (int32_t error)
|
||||
{
|
||||
fprintf (stderr, "ERROR STOP %d\n", error);
|
||||
error_stop (error);
|
||||
}
|
||||
|
|
@ -0,0 +1,107 @@
|
|||
/* Single-image implementation of GNU Fortran Coarray Library
|
||||
Copyright (C) 2011
|
||||
Free Software Foundation, Inc.
|
||||
Contributed by Tobias Burnus <burnus@net-b.de>
|
||||
|
||||
This file is part of the GNU Fortran Coarray Runtime Library (libcaf).
|
||||
|
||||
Libcaf 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, or (at your option)
|
||||
any later version.
|
||||
|
||||
Libcaf 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 "libcaf.h"
|
||||
#include <stdio.h> /* For fputs and fprintf. */
|
||||
#include <stdlib.h> /* For exit. */
|
||||
|
||||
/* Define GFC_CAF_CHECK to enable run-time checking. */
|
||||
/* #define GFC_CAF_CHECK 1 */
|
||||
|
||||
|
||||
/* Single-image implementation of the CAF library.
|
||||
Note: For performance reasons -fcoarry=single should be used
|
||||
rather than this library. */
|
||||
|
||||
void
|
||||
_gfortran_caf_init (int *argc __attribute__ ((unused)),
|
||||
char ***argv __attribute__ ((unused)),
|
||||
int *this_image, int *num_images)
|
||||
{
|
||||
*this_image = 1;
|
||||
*num_images = 1;
|
||||
}
|
||||
|
||||
void
|
||||
_gfortran_caf_finalize (void)
|
||||
{
|
||||
}
|
||||
|
||||
int
|
||||
_gfortran_caf_sync_all (char *errmsg __attribute__ ((unused)),
|
||||
int errmsg_len __attribute__ ((unused)))
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
_gfortran_caf_sync_images (int count __attribute__ ((unused)),
|
||||
int images[] __attribute__ ((unused)),
|
||||
char *errmsg __attribute__ ((unused)),
|
||||
int errmsg_len __attribute__ ((unused)))
|
||||
{
|
||||
#ifdef GFC_CAF_CHECK
|
||||
int i;
|
||||
|
||||
for (i = 0; i < count; i++)
|
||||
if (images[i] != 1)
|
||||
{
|
||||
fprintf (stderr, "COARRAY ERROR: Invalid image index %d to SYNC "
|
||||
"IMAGES", images[i]);
|
||||
exit (1);
|
||||
}
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
_gfortran_caf_critical (void)
|
||||
{
|
||||
}
|
||||
|
||||
void
|
||||
_gfortran_caf_end_critical (void)
|
||||
{
|
||||
}
|
||||
|
||||
void
|
||||
_gfortran_caf_error_stop_str (const char *string, int32_t len)
|
||||
{
|
||||
fputs ("ERROR STOP ", stderr);
|
||||
while (len--)
|
||||
fputc (*(string++), stderr);
|
||||
fputs ("\n", stderr);
|
||||
|
||||
exit (1);
|
||||
}
|
||||
|
||||
void
|
||||
_gfortran_caf_error_stop (int32_t error)
|
||||
{
|
||||
fprintf (stderr, "ERROR STOP %d\n", error);
|
||||
exit (error);
|
||||
}
|
||||
Loading…
Reference in New Issue