void read_work(size_t const count, std::vector<char>& result)
{
if (fd_ < 0 || count <= 0)
{
return;
}
std::unique_ptr<char[]> sp(new char[count]);
ssize_t len = pvfs_read(fd_, sp.get(), count);
if (len == 0)
{
return;
}
result.assign(sp.get(), sp.get() + len);
}
void ADIOI_PVFS_ReadContig(ADIO_File fd, void *buf, int count,
MPI_Datatype datatype, int file_ptr_type,
ADIO_Offset offset, ADIO_Status *status, int *error_code)
{
int err=-1, datatype_size, len;
static char myname[] = "ADIOI_PVFS_READCONTIG";
MPI_Type_size(datatype, &datatype_size);
len = datatype_size * count;
if (file_ptr_type == ADIO_EXPLICIT_OFFSET) {
if (fd->fp_sys_posn != offset) {
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_lseek_a, 0, NULL );
#endif
pvfs_lseek64(fd->fd_sys, offset, SEEK_SET);
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_lseek_b, 0, NULL );
#endif
}
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_read_a, 0, NULL );
#endif
err = pvfs_read(fd->fd_sys, buf, len);
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_read_b, 0, NULL );
#endif
if (err>0)
fd->fp_sys_posn = offset + err;
/* individual file pointer not updated */
}
else { /* read from curr. location of ind. file pointer */
if (fd->fp_sys_posn != fd->fp_ind) {
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_lseek_a, 0, NULL );
#endif
pvfs_lseek64(fd->fd_sys, fd->fp_ind, SEEK_SET);
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_lseek_b, 0, NULL );
#endif
}
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_read_a, 0, NULL );
#endif
err = pvfs_read(fd->fd_sys, buf, len);
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event( ADIOI_MPE_read_b, 0, NULL );
#endif
if (err > 0)
fd->fp_ind += err;
fd->fp_sys_posn = fd->fp_ind;
}
#ifdef HAVE_STATUS_SET_BYTES
if (err != -1) MPIR_Status_set_bytes(status, datatype, err);
#endif
if (err == -1) {
*error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
myname, __LINE__, MPI_ERR_IO,
"**io",
"**io %s", strerror(errno));
}
else *error_code = MPI_SUCCESS;
}
