Add h5pget_actual_selection_io_mode fortran wrapper (#3746)

* added h5pget_actual_selection_io_mode_f test

* added tests for h5pget_actual_selection_io_mode_f

* fixed int_f type conversion

7 files changed, 77 insertions, 3 deletions

diff --git a/fortran/src/H5Pff.F90 b/fortran/src/H5Pff.F90
index bbc7a9d..5821889 100644
--- a/fortran/src/H5Pff.F90
+++ b/fortran/src/H5Pff.F90
@@ -6405,7 +6405,7 @@ END SUBROUTINE h5pget_virtual_dsetname_f
 !! \brief Gets the file space handling strategy and persisting free-space values for a file creation property list.
 !!
 !! \param plist_id  File creation property list identifier
-!! \param strategy  The file space handling strategy to be used.
+!! \param strategy  The file space handling strategy to be used
 !! \param persist   Indicate whether free space should be persistent or not
 !! \param threshold The free-space section size threshold value
 !! \param hdferr    \fortran_error
@@ -6507,6 +6507,42 @@ END SUBROUTINE h5pget_virtual_dsetname_f
     hdferr = INT(h5pget_file_space_page_size(prp_id, fsp_size))
 
   END SUBROUTINE h5pget_file_space_page_size_f
+!>
+!! \ingroup FH5P
+!!
+!! \brief Retrieves the type(s) of I/O that HDF5 actually performed on raw data
+!!        during the last I/O call.
+!!
+!! \param plist_id                 File creation property list identifier
+!! \param actual_selection_io_mode A bitwise set value indicating the type(s) of I/O performed
+!! \param hdferr                   \fortran_error
+!!
+!! See C API: @ref H5Pget_actual_selection_io_mode()
+!!
+  SUBROUTINE h5pget_actual_selection_io_mode_f(plist_id, actual_selection_io_mode, hdferr)
+
+    IMPLICIT NONE
+    INTEGER(HID_T), INTENT(IN)  :: plist_id
+    INTEGER       , INTENT(OUT) :: actual_selection_io_mode
+    INTEGER       , INTENT(OUT) :: hdferr
+
+    INTEGER(C_INT32_T) :: c_actual_selection_io_mode
+
+    INTERFACE
+        INTEGER(C_INT) FUNCTION H5Pget_actual_selection_io_mode(plist_id, actual_selection_io_mode) &
+             BIND(C, NAME='H5Pget_actual_selection_io_mode')
+          IMPORT :: HID_T, C_INT32_T, C_INT
+          IMPLICIT NONE
+          INTEGER(HID_T), VALUE :: plist_id
+          INTEGER(C_INT32_T)    :: actual_selection_io_mode
+        END FUNCTION H5Pget_actual_selection_io_mode
+     END INTERFACE
+
+     hdferr = INT(H5Pget_actual_selection_io_mode(plist_id, c_actual_selection_io_mode))
+
+     actual_selection_io_mode = INT(c_actual_selection_io_mode)
+
+   END SUBROUTINE h5pget_actual_selection_io_mode_f
 
 END MODULE H5P
 
diff --git a/fortran/src/H5_f.c b/fortran/src/H5_f.c
index 181047b..0392c2b 100644
--- a/fortran/src/H5_f.c
+++ b/fortran/src/H5_f.c
@@ -477,6 +477,10 @@ h5init_flags_c(int_f *h5d_flags, size_t_f *h5d_size_flags, int_f *h5e_flags, hid
     h5d_flags[55] = (int_f)H5D_MPIO_LINK_CHUNK;
     h5d_flags[56] = (int_f)H5D_MPIO_MULTI_CHUNK;
 
+    h5d_flags[57] = (int_f)H5D_SCALAR_IO;
+    h5d_flags[58] = (int_f)H5D_VECTOR_IO;
+    h5d_flags[59] = (int_f)H5D_SELECTION_IO;
+
     /*
      *  H5E flags
      */
diff --git a/fortran/src/H5_ff.F90 b/fortran/src/H5_ff.F90
index 68b3dd8..5315673 100644
--- a/fortran/src/H5_ff.F90
+++ b/fortran/src/H5_ff.F90
@@ -74,7 +74,7 @@ MODULE H5LIB
   !
   ! H5D flags declaration
   !
-  INTEGER, PARAMETER :: H5D_FLAGS_LEN = 57
+  INTEGER, PARAMETER :: H5D_FLAGS_LEN = 60
   INTEGER, DIMENSION(1:H5D_FLAGS_LEN) :: H5D_flags
   INTEGER, PARAMETER :: H5D_SIZE_FLAGS_LEN = 2
   INTEGER(SIZE_T), DIMENSION(1:H5D_SIZE_FLAGS_LEN) :: H5D_size_flags
@@ -467,6 +467,9 @@ CONTAINS
     H5D_MPIO_NO_CHUNK_OPTIMIZATION_F                    = H5D_flags(55)
     H5D_MPIO_LINK_CHUNK_F                               = H5D_flags(56)
     H5D_MPIO_MULTI_CHUNK_F                              = H5D_flags(57)
+    H5D_SCALAR_IO_F                                     = H5D_flags(58)
+    H5D_VECTOR_IO_F                                     = H5D_flags(59)
+    H5D_SELECTION_IO_F                                  = H5D_flags(60)
 
     H5D_CHUNK_CACHE_NSLOTS_DFLT_F = H5D_size_flags(1)
     H5D_CHUNK_CACHE_NBYTES_DFLT_F = H5D_size_flags(2)
diff --git a/fortran/src/H5f90global.F90 b/fortran/src/H5f90global.F90
index f6c06cb..aa04623 100644
--- a/fortran/src/H5f90global.F90
+++ b/fortran/src/H5f90global.F90
@@ -374,6 +374,12 @@ MODULE H5GLOBAL
   !DEC$ATTRIBUTES DLLEXPORT :: H5D_MPIO_NO_CHUNK_OPTIMIZATION_F
   !DEC$ATTRIBUTES DLLEXPORT :: H5D_MPIO_LINK_CHUNK_F
   !DEC$ATTRIBUTES DLLEXPORT :: H5D_MPIO_MULTI_CHUNK_F
+
+  !DEC$ATTRIBUTES DLLEXPORT :: H5D_SCALAR_IO_F
+  !DEC$ATTRIBUTES DLLEXPORT :: H5D_VECTOR_IO_F
+  !DEC$ATTRIBUTES DLLEXPORT :: H5D_SELECTION_IO_F
+
+
   !DEC$endif
 !> \addtogroup FH5D
 !> @{
@@ -450,6 +456,10 @@ MODULE H5GLOBAL
   INTEGER :: H5D_MPIO_NO_CHUNK_OPTIMIZATION_F !< H5D_MPIO_NO_CHUNK_OPTIMIZATION
   INTEGER :: H5D_MPIO_LINK_CHUNK_F            !< H5D_MPIO_LINK_CHUNK
   INTEGER :: H5D_MPIO_MULTI_CHUNK_F           !< H5D_MPIO_MULTI_CHUNK
+
+  INTEGER :: H5D_SCALAR_IO_F    !< Scalar (or legacy MPIO) I/O was performed
+  INTEGER :: H5D_VECTOR_IO_F    !< Vector I/O was performed
+  INTEGER :: H5D_SELECTION_IO_F !< Selection I/O was performed
   !
   ! H5E flags declaration
   !
diff --git a/fortran/test/tH5P.F90 b/fortran/test/tH5P.F90
index c73016b..78d665f 100644
--- a/fortran/test/tH5P.F90
+++ b/fortran/test/tH5P.F90
@@ -869,6 +869,7 @@ SUBROUTINE test_in_place_conversion(cleanup, total_error)
   REAL(KIND=C_DOUBLE), DIMENSION(1:array_len) :: wbuf_d_org
   REAL(KIND=C_FLOAT), DIMENSION(1:array_len), TARGET  :: rbuf
   INTEGER :: i
+  INTEGER :: actual_selection_io_mode
   TYPE(C_PTR) :: f_ptr
 
   ! create the data
@@ -919,6 +920,10 @@ SUBROUTINE test_in_place_conversion(cleanup, total_error)
   ! Should not be equal for in-place buffer use
   CALL VERIFY("h5dwrite_f -- in-place", wbuf_d(1), wbuf_d_org(1), total_error, .FALSE.)
 
+  CALL h5pget_actual_selection_io_mode_f(plist_id, actual_selection_io_mode, error)
+  CALL check("h5pget_actual_selection_io_mode_f", error, total_error)
+  CALL VERIFY("h5pget_actual_selection_io_mode_f", actual_selection_io_mode, H5D_SCALAR_IO_F, total_error)
+
   f_ptr = C_LOC(rbuf)
   CALL h5dread_f(dset_id, h5kind_to_type(KIND(rbuf(1)), H5_REAL_KIND), f_ptr, error)
   CALL check("h5dread_f", error, total_error)
diff --git a/fortran/testpar/hyper.F90 b/fortran/testpar/hyper.F90
index edd93cf..ec3a657 100644
--- a/fortran/testpar/hyper.F90
+++ b/fortran/testpar/hyper.F90
@@ -55,6 +55,7 @@ SUBROUTINE hyper(length,do_collective,do_chunk, mpi_size, mpi_rank, nerrors)
   INTEGER :: local_no_collective_cause
   INTEGER :: global_no_collective_cause
   INTEGER :: no_selection_io_cause
+  INTEGER :: actual_selection_io_mode
 
   !
   ! initialize the array data between the processes (3)
@@ -236,6 +237,20 @@ SUBROUTINE hyper(length,do_collective,do_chunk, mpi_size, mpi_rank, nerrors)
   CALL h5dwrite_f(dset_id,H5T_NATIVE_INTEGER,wbuf,dims,hdferror,file_space_id=fspace_id,mem_space_id=mspace_id,xfer_prp=dxpl_id)
   CALL check("h5dwrite_f", hdferror, nerrors)
 
+  CALL h5pget_actual_selection_io_mode_f(dxpl_id, actual_selection_io_mode, hdferror)
+  CALL check("h5pget_actual_selection_io_mode_f", hdferror, nerrors)
+  IF(do_collective)THEN
+     IF(actual_selection_io_mode .NE. H5D_SELECTION_IO_F)THEN
+        PRINT*, "Incorrect actual selection io mode"
+        nerrors = nerrors + 1
+     ENDIF
+  ELSE
+     IF(actual_selection_io_mode .NE. IOR(H5D_SELECTION_IO_F, H5D_SCALAR_IO_F))THEN
+        PRINT*, "Incorrect actual selection io mode"
+        nerrors = nerrors + 1
+     ENDIF
+  ENDIF
+
   ! Check h5pget_mpio_actual_io_mode_f function
   CALL h5pget_mpio_actual_io_mode_f(dxpl_id, actual_io_mode, hdferror)
   CALL check("h5pget_mpio_actual_io_mode_f", hdferror, nerrors)
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
index 9643cf9..a5bcb94 100644
--- a/release_docs/RELEASE.txt
+++ b/release_docs/RELEASE.txt
@@ -332,7 +332,8 @@ New Features
     - Fortran async APIs H5A, H5D, H5ES, H5G, H5F, H5L and H5O were added.
 
     - Added Fortran APIs:
-      h5pset_selection_io_f, h5pget_selection_io_f
+      h5pset_selection_io_f, h5pget_selection_io_f,
+      h5pget_actual_selection_io_mode_f,
       h5pset_modify_write_buf_f, h5pget_modify_write_buf_f
 
     - Added Fortran APIs: