Add H5Dchunk_iter method for iterating over chunks (#6)

* Add H5Dchunk_iter method for iterating over chunks

This method iterates over all chunks in dataset, calling a user-supplied
callback with the chunk information and optional user supplied data.

The iterator is stopped when ITER_STOP is returned by the user-supplied
callback or the iterator is exhausted.

Existing methods to get chunk_info performs an iteration each time, so
to get many or all chunks causes SUM(i) for i = 0 -> N operations for N
chunks, as opposed to N operations when using this iterator for this use case.

* H5Dchunk_iter: test iterating all chunks, some chunks and failing iteration.

* H5D: move H5Dchunk_iter private methods to specific

* trace: add H5D_chunk_iter_op_t and trace H5D.c

* chunks-iter: document chunk_iter

* chunk-iter: chunk add FUNC_ENTER/FUNC_LEAVE macros

* Committing clang-format changes

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/bin/trace b/bin/trace
index 0611fa5..a2052ce 100755
--- a/bin/trace
+++ b/bin/trace
@@ -53,6 +53,7 @@ $Source = "";
                "H5D_scatter_func_t"         => "DS",
                "H5FD_mpio_xfer_t"           => "Dt",
                "H5D_vds_view_t"             => "Dv",
+               "H5D_chunk_iter_op_t"        => "x",
                "herr_t"                     => "e",
                "H5E_auto1_t"                => "Ea",
                "H5E_auto2_t"                => "EA",