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re PR fortran/18918 (Eventually support Fortran 2008's coarrays [co-arrays])

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2011-04-06  Tobias Burnus  <burnus@net-b.de>

        PR fortran/18918
        * caf/mpi.c (_gfortran_caf_init, _gfortran_caf_finalize):
        Add global variable caf_mpi_initialized and use it for when
        finalizing.

From-SVN: r172059
This commit is contained in:
Tobias Burnus 2011-04-06 20:29:55 +02:00 committed by Tobias Burnus
parent a95d400021
commit 6eb87b330f
2 changed files with 16 additions and 10 deletions
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7
libgfortran/ChangeLog
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@ -1,3 +1,10 @@
2011-04-06 Tobias Burnus <burnus@net-b.de>
PR fortran/18918
* caf/mpi.c (_gfortran_caf_init, _gfortran_caf_finalize):
Add global variable caf_mpi_initialized and use it for when
finalizing.
2011-04-04 Tobias Burnus <burnus@net-b.de>
* unix.c: Adapt stat DEFINEs since MinGW64 supports LFS.

19
libgfortran/caf/mpi.c
View File

@ -36,6 +36,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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 MPI_Win caf_world_window;
@ -50,12 +51,10 @@ static MPI_Win caf_world_window;
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)
/* 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_rank (MPI_COMM_WORLD, &caf_this_image);
@ -69,15 +68,15 @@ _gfortran_caf_init (int *argc, char ***argv, int *this_image, int *num_images)
}
/* 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. */
/* Finalize coarray program. */
void
_gfortran_caf_finalize (void)
{
MPI_Win_free (&caf_world_window);
MPI_Finalize ();
if (!caf_mpi_initialized)
MPI_Finalize ();
}