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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpioimpl.h"
#ifdef HAVE_WEAK_SYMBOLS
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_File_set_atomicity = PMPI_File_set_atomicity
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_File_set_atomicity MPI_File_set_atomicity
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_File_set_atomicity as PMPI_File_set_atomicity
/* end of weak pragmas */
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_File_set_atomicity(MPI_File fh, int flag)
__attribute__ ((weak, alias("PMPI_File_set_atomicity")));
#endif
/* Include mapping from MPI->PMPI */
#define MPIO_BUILD_PROFILING
#include "mpioprof.h"
#endif
/*@
MPI_File_set_atomicity - Sets the atomicity mode
Input Parameters:
. fh - file handle (handle)
. flag - true to set atomic mode, false to set nonatomic mode (logical)
.N fortran
@*/
int MPI_File_set_atomicity(MPI_File fh, int flag)
{
int error_code, tmp_flag;
static char myname[] = "MPI_FILE_SET_ATOMICITY";
ADIO_Fcntl_t *fcntl_struct;
ADIO_File adio_fh;
ROMIO_THREAD_CS_ENTER();
adio_fh = MPIO_File_resolve(fh);
/* --BEGIN ERROR HANDLING-- */
MPIO_CHECK_FILE_HANDLE(adio_fh, myname, error_code);
/* --END ERROR HANDLING-- */
ADIOI_TEST_DEFERRED(adio_fh, myname, &error_code);
if (flag)
flag = 1; /* take care of non-one values! */
/* check if flag is the same on all processes */
tmp_flag = flag;
MPI_Bcast(&tmp_flag, 1, MPI_INT, 0, adio_fh->comm);
/* --BEGIN ERROR HANDLING-- */
if (tmp_flag != flag) {
error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
myname, __LINE__, MPI_ERR_ARG, "**notsame", 0);
error_code = MPIO_Err_return_file(adio_fh, error_code);
goto fn_exit;
}
/* --END ERROR HANDLING-- */
if (adio_fh->atomicity == flag) {
error_code = MPI_SUCCESS;
goto fn_exit;
}
fcntl_struct = (ADIO_Fcntl_t *) ADIOI_Malloc(sizeof(ADIO_Fcntl_t));
fcntl_struct->atomicity = flag;
ADIO_Fcntl(adio_fh, ADIO_FCNTL_SET_ATOMICITY, fcntl_struct, &error_code);
/* TODO: what do we do with this error code? */
/* --BEGIN ERROR HANDLING-- */
if (error_code != MPI_SUCCESS)
error_code = MPIO_Err_return_file(adio_fh, error_code);
/* --END ERROR HANDLING-- */
ADIOI_Free(fcntl_struct);
fn_exit:
ROMIO_THREAD_CS_EXIT();
return error_code;
}
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