int mca_sharedfp_sm_write (mca_io_ompio_file_t *fh,
const void *buf,
int count,
struct ompi_datatype_t *datatype,
ompi_status_public_t *status)
{
int ret = OMPI_SUCCESS;
OMPI_MPI_OFFSET_TYPE offset = 0;
long bytesRequested = 0;
size_t numofBytes;
struct mca_sharedfp_base_data_t *sh = NULL;
mca_sharedfp_base_module_t * shared_fp_base_module = NULL;
if( NULL == fh->f_sharedfp_data ){
if ( mca_sharedfp_sm_verbose ) {
opal_output(ompi_sharedfp_base_framework.framework_output,
"sharedfp_sm_write: opening the shared file pointer\n");
}
shared_fp_base_module = fh->f_sharedfp;
ret = shared_fp_base_module->sharedfp_file_open(fh->f_comm,
fh->f_filename,
fh->f_amode,
fh->f_info,
fh);
if ( OMPI_SUCCESS != ret ) {
opal_output(0,"sharedfp_sm_write - error opening the shared file pointer\n");
return ret;
}
}
/* Calculate the number of bytes to write*/
opal_datatype_type_size ( &datatype->super, &numofBytes);
bytesRequested = count * numofBytes;
/*Retrieve the shared file data struct*/
sh = fh->f_sharedfp_data;
if ( mca_sharedfp_sm_verbose ) {
opal_output(ompi_sharedfp_base_framework.framework_output,
"sharedfp_sm_write: Requested is %ld\n",bytesRequested);
}
/*Request the offset to write bytesRequested bytes*/
ret = mca_sharedfp_sm_request_position(sh,bytesRequested,&offset);
offset /= sh->sharedfh->f_etype_size;
if ( -1 != ret ) {
if ( mca_sharedfp_sm_verbose ) {
opal_output(ompi_sharedfp_base_framework.framework_output,
"sharedfp_sm_write: fset received is %lld\n",offset);
}
/* Write to the file*/
ret = mca_common_ompio_file_write_at(sh->sharedfh,offset,buf,count,datatype,status);
}
return ret;
}
int mca_sharedfp_individual_write (mca_io_ompio_file_t *fh,
const void *buf,
int count,
struct ompi_datatype_t *datatype,
ompi_status_public_t *status)
{
int ret = OMPI_SUCCESS;
size_t numofbytes = 0;
size_t totalbytes = 0;
mca_sharedfp_individual_header_record *headnode = NULL;
struct mca_sharedfp_base_data_t *sh = NULL;
mca_sharedfp_base_module_t * shared_fp_base_module = NULL;
if ( NULL == fh->f_sharedfp_data ) {
if ( mca_sharedfp_individual_verbose ) {
opal_output(ompi_sharedfp_base_framework.framework_output,"sharedfp_individual_write: opening the shared file pointer file\n");
}
shared_fp_base_module = fh->f_sharedfp;
ret = shared_fp_base_module->sharedfp_file_open(fh->f_comm,
fh->f_filename,
fh->f_amode,
fh->f_info,
fh);
if (ret != OMPI_SUCCESS) {
opal_output(0,"sharedfp_individual_write - error opening the shared file pointer\n");
return ret;
}
}
/* Calculate the number of bytes of data that need to be written*/
opal_datatype_type_size ( &datatype->super, &numofbytes);
totalbytes = count * numofbytes;
/*Retrieve data structure for shared file pointer operations*/
sh = fh->f_sharedfp_data;
headnode = (mca_sharedfp_individual_header_record*)sh->selected_module_data;
if (headnode) {
/*Insert metadata record into a queue*/
mca_sharedfp_individual_insert_metadata(OMPI_FILE_WRITE_SHARED, totalbytes, sh);
/*Write the data into individual file*/
ret = mca_common_ompio_file_write_at ( headnode->datafilehandle,
headnode->datafile_offset,
buf, count, datatype, status);
if ( OMPI_SUCCESS != ret ) {
opal_output(0,"mca_sharedfp_individual_write: Error while writing the datafile \n");
return -1;
}
/* Update the datafileoffset*/
headnode->datafile_offset = headnode->datafile_offset + totalbytes;
}
return ret;
}
int mca_io_ompio_file_write_at (ompi_file_t *fh,
OMPI_MPI_OFFSET_TYPE offset,
const void *buf,
int count,
struct ompi_datatype_t *datatype,
ompi_status_public_t *status)
{
int ret = OMPI_SUCCESS;
mca_io_ompio_data_t *data;
data = (mca_io_ompio_data_t *) fh->f_io_selected_data;
ret = mca_common_ompio_file_write_at (&data->ompio_fh, offset,buf,count,datatype,status);
return ret;
}
