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# close_delta_file

Close the instrumentation profiler's delta results file.

## Description

Close the file that the instrumentation profiler writes delta values to. The file must previously have been opened using open_delta_file/1.

Delta values are the instrumentation profiling results for the single execution (as opposed to aggregated) of a profiled code fragment.

For performance reasons, the results are written to the file using buffered I/O - each result is not flushed to the file as it is emitted. As a result to ensure all results are flushed to the disk file, `close_delta_file` must be executed.

### Fail Conditions

no

### Resatisfiable

no

## See Also

open_delta_file / 1, statprofile / 3, statistics / 2, library(instprofile)