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Purpose
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Terminates access to a data object by disposing of the access identifier. |
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Return value
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Returns SUCCEED (or 0) if successful and FAIL (or -1) otherwise. |
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Description
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The number of active access identifiers is limited to MAX_ACC as defined in the hlimits.h header file. Because of this restriction, it is very important to call Hendaccess immediately following the last operation on a data element. |
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When developing new interfaces, a common mistake is to omit calling Hendaccess for all of the elements accessed. When this happens, Hclose will return FAIL, and a dump of the error stack will report the number of active access identifiers. Refer to the Reference Manual page on HEprint. |
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This is a difficult problem to debug because the low levels of the HDF library cannot determine who and where an access identifier was originated. As a result, there is no automated method of determining which access identifiers have yet to be released. |