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Page Title

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Hdf rm anchor
AnchorNamesummary

Excerpt

Increments an object reference count

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Hdf rm anchor
AnchorNameprocedure

Procedure:
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H5O_INCR_REFCOUNT(object_id)

Hdf rm anchor
AnchorNamesignature

Signature:
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<pre><code class="language-c">herr_t H5Oincr_refcount( hid_t object_id )</code></pre>
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<pre><code class="language-fortran">SUBROUTINE h5oincr_refcount_f(obj_id, hdferr)
    IMPLICIT NONE
    INTEGER(HID_T), INTENT(IN)  :: obj_id
    INTEGER       , INTENT(OUT) :: hdferr</code></pre>

Hdf rm anchor
AnchorNameparameters

Parameters:
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hid_t object_id    IN: Object identifier; may be a group, named datatype, or dataset identifier

Hdf rm anchor
AnchorNamedescription

Description:
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H5O_INCR_REFCOUNT increments the hard link reference count for an object. It should be used any time a user-defined link that references an object by address is added. When the link is deleted, H5O_DECR_REFCOUNT should be used.

An object’s reference count is the number of hard links in the file that point to that object. See the “Programming Model” section of the HDF5 Groups chapter in the HDF5 User’s Guide for a more complete discussion of reference counts.

If a user application needs to determine an object’s reference count, an H5O_GET_INFO call is required; the reference count is returned in the rc field of the H5O_info_t struct.

Warning

Warning: This function must be used with care! 
Improper use can lead to inaccessible data, wasted space in the file, or file corruption.

Hdf rm anchor
AnchorNamereturns

Returns:
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Returns a non-negative value if successful; otherwise returns a negative value.

Hdf rm anchor
AnchorNameexample

Example:
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Comment
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Bitbucket Server file
repoSlughdf5
branchIdrefs/heads/1.10/master
projectKeyHDFFV
filepathexamples/h5_subset.c
showLineNumberstrue
lineStart32
progLangcpp
lineEnd42
applicationLink5ac7b370-7412-3c8c-ad20-807a68261336

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Bitbucket Server file
repoSlughdf5
branchIdrefs/heads/1.10/master
projectKeyHDFFV
filepathfortran/examples/compound.f90
showLineNumberstrue
lineStart25
progLangplain
lineEnd35
applicationLink5ac7b370-7412-3c8c-ad20-807a68261336

Hdf rm anchor
AnchorNamehistory

History:
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Release    Change
1.8.11Fortran subroutine introduced in this release.
1.8.0Function introduced in this release.

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