mirror of
https://github.com/autc04/Retro68.git
synced 2024-09-10 03:54:48 +00:00
367 lines
8.5 KiB
C
367 lines
8.5 KiB
C
/* MPI implementation of GNU Fortran Coarray Library
|
|
Copyright (C) 2011-2014 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 <string.h> /* For memcpy. */
|
|
#include <stdarg.h> /* For variadic arguments. */
|
|
#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_mpi_initialized;
|
|
static int caf_this_image;
|
|
static int caf_num_images;
|
|
static int caf_is_finalized;
|
|
|
|
caf_static_t *caf_static_list = NULL;
|
|
|
|
|
|
/* Keep in sync with single.c. */
|
|
static void
|
|
caf_runtime_error (const char *message, ...)
|
|
{
|
|
va_list ap;
|
|
fprintf (stderr, "Fortran runtime error on image %d: ", caf_this_image);
|
|
va_start (ap, message);
|
|
vfprintf (stderr, message, ap);
|
|
va_end (ap);
|
|
fprintf (stderr, "\n");
|
|
|
|
/* 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, EXIT_FAILURE);
|
|
|
|
/* Should be unreachable, but to make sure also call exit. */
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
|
|
|
|
/* 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)
|
|
{
|
|
if (caf_num_images == 0)
|
|
{
|
|
/* caf_mpi_initialized is only true if the main program is
|
|
not written in Fortran. */
|
|
MPI_Initialized (&caf_mpi_initialized);
|
|
if (!caf_mpi_initialized)
|
|
MPI_Init (argc, argv);
|
|
|
|
MPI_Comm_size (MPI_COMM_WORLD, &caf_num_images);
|
|
MPI_Comm_rank (MPI_COMM_WORLD, &caf_this_image);
|
|
caf_this_image++;
|
|
}
|
|
|
|
if (this_image)
|
|
*this_image = caf_this_image;
|
|
if (num_images)
|
|
*num_images = caf_num_images;
|
|
}
|
|
|
|
|
|
/* Finalize coarray program. */
|
|
|
|
void
|
|
_gfortran_caf_finalize (void)
|
|
{
|
|
while (caf_static_list != NULL)
|
|
{
|
|
caf_static_t *tmp = caf_static_list->prev;
|
|
|
|
free (caf_static_list->token[caf_this_image-1]);
|
|
free (caf_static_list->token);
|
|
free (caf_static_list);
|
|
caf_static_list = tmp;
|
|
}
|
|
|
|
if (!caf_mpi_initialized)
|
|
MPI_Finalize ();
|
|
|
|
caf_is_finalized = 1;
|
|
}
|
|
|
|
|
|
void *
|
|
_gfortran_caf_register (ptrdiff_t size, caf_register_t type, void ***token,
|
|
int *stat, char *errmsg, int errmsg_len)
|
|
{
|
|
void *local;
|
|
int err;
|
|
|
|
if (unlikely (caf_is_finalized))
|
|
goto error;
|
|
|
|
/* Start MPI if not already started. */
|
|
if (caf_num_images == 0)
|
|
_gfortran_caf_init (NULL, NULL, NULL, NULL);
|
|
|
|
/* Token contains only a list of pointers. */
|
|
local = malloc (size);
|
|
*token = malloc (sizeof (void*) * caf_num_images);
|
|
|
|
if (unlikely (local == NULL || *token == NULL))
|
|
goto error;
|
|
|
|
/* token[img-1] is the address of the token in image "img". */
|
|
err = MPI_Allgather (&local, sizeof (void*), MPI_BYTE, *token,
|
|
sizeof (void*), MPI_BYTE, MPI_COMM_WORLD);
|
|
|
|
if (unlikely (err))
|
|
{
|
|
free (local);
|
|
free (*token);
|
|
goto error;
|
|
}
|
|
|
|
if (type == CAF_REGTYPE_COARRAY_STATIC)
|
|
{
|
|
caf_static_t *tmp = malloc (sizeof (caf_static_t));
|
|
tmp->prev = caf_static_list;
|
|
tmp->token = *token;
|
|
caf_static_list = tmp;
|
|
}
|
|
|
|
if (stat)
|
|
*stat = 0;
|
|
|
|
return local;
|
|
|
|
error:
|
|
{
|
|
char *msg;
|
|
|
|
if (caf_is_finalized)
|
|
msg = "Failed to allocate coarray - there are stopped images";
|
|
else
|
|
msg = "Failed to allocate coarray";
|
|
|
|
if (stat)
|
|
{
|
|
*stat = caf_is_finalized ? STAT_STOPPED_IMAGE : 1;
|
|
if (errmsg_len > 0)
|
|
{
|
|
int len = ((int) strlen (msg) > errmsg_len) ? errmsg_len
|
|
: (int) strlen (msg);
|
|
memcpy (errmsg, msg, len);
|
|
if (errmsg_len > len)
|
|
memset (&errmsg[len], ' ', errmsg_len-len);
|
|
}
|
|
}
|
|
else
|
|
caf_runtime_error (msg);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
void
|
|
_gfortran_caf_deregister (void ***token, int *stat, char *errmsg, int errmsg_len)
|
|
{
|
|
if (unlikely (caf_is_finalized))
|
|
{
|
|
const char msg[] = "Failed to deallocate coarray - "
|
|
"there are stopped images";
|
|
if (stat)
|
|
{
|
|
*stat = STAT_STOPPED_IMAGE;
|
|
|
|
if (errmsg_len > 0)
|
|
{
|
|
int len = ((int) sizeof (msg) - 1 > errmsg_len)
|
|
? errmsg_len : (int) sizeof (msg) - 1;
|
|
memcpy (errmsg, msg, len);
|
|
if (errmsg_len > len)
|
|
memset (&errmsg[len], ' ', errmsg_len-len);
|
|
}
|
|
return;
|
|
}
|
|
caf_runtime_error (msg);
|
|
}
|
|
|
|
_gfortran_caf_sync_all (NULL, NULL, 0);
|
|
|
|
if (stat)
|
|
*stat = 0;
|
|
|
|
free ((*token)[caf_this_image-1]);
|
|
free (*token);
|
|
}
|
|
|
|
|
|
void
|
|
_gfortran_caf_sync_all (int *stat, char *errmsg, int errmsg_len)
|
|
{
|
|
int ierr;
|
|
|
|
if (unlikely (caf_is_finalized))
|
|
ierr = STAT_STOPPED_IMAGE;
|
|
else
|
|
ierr = MPI_Barrier (MPI_COMM_WORLD);
|
|
|
|
if (stat)
|
|
*stat = ierr;
|
|
|
|
if (ierr)
|
|
{
|
|
char *msg;
|
|
if (caf_is_finalized)
|
|
msg = "SYNC ALL failed - there are stopped images";
|
|
else
|
|
msg = "SYNC ALL failed";
|
|
|
|
if (errmsg_len > 0)
|
|
{
|
|
int len = ((int) strlen (msg) > errmsg_len) ? errmsg_len
|
|
: (int) strlen (msg);
|
|
memcpy (errmsg, msg, len);
|
|
if (errmsg_len > len)
|
|
memset (&errmsg[len], ' ', errmsg_len-len);
|
|
}
|
|
else
|
|
caf_runtime_error (msg);
|
|
}
|
|
}
|
|
|
|
|
|
/* 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. */
|
|
void
|
|
_gfortran_caf_sync_images (int count, int images[], int *stat, char *errmsg,
|
|
int errmsg_len)
|
|
{
|
|
int ierr;
|
|
if (count == 0 || (count == 1 && images[0] == caf_this_image))
|
|
{
|
|
if (stat)
|
|
*stat = 0;
|
|
return;
|
|
}
|
|
|
|
#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(*). */
|
|
if (unlikely (caf_is_finalized))
|
|
ierr = STAT_STOPPED_IMAGE;
|
|
else
|
|
ierr = MPI_Barrier (MPI_COMM_WORLD);
|
|
|
|
if (stat)
|
|
*stat = ierr;
|
|
|
|
if (ierr)
|
|
{
|
|
char *msg;
|
|
if (caf_is_finalized)
|
|
msg = "SYNC IMAGES failed - there are stopped images";
|
|
else
|
|
msg = "SYNC IMAGES failed";
|
|
|
|
if (errmsg_len > 0)
|
|
{
|
|
int len = ((int) strlen (msg) > errmsg_len) ? errmsg_len
|
|
: (int) strlen (msg);
|
|
memcpy (errmsg, msg, len);
|
|
if (errmsg_len > len)
|
|
memset (&errmsg[len], ' ', errmsg_len-len);
|
|
}
|
|
else
|
|
caf_runtime_error (msg);
|
|
}
|
|
}
|
|
|
|
|
|
/* 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);
|
|
}
|