[#btck_chainstate_manager_import_blocks]
= btck_chainstate_manager_import_blocks
:mrdocs:

Triggers the start of a reindex if the wipe options were previously set for the chainstate manager. Can also import an array of existing block files selected by the user.

== Synopsis

Declared in `<kernel/bitcoinkernel.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard, __nonnull__]]
int
btck_chainstate_manager_import_blocks(
    xref:btck_ChainstateManager-0e.adoc[btck_ChainstateManager]* chainstate_manager,
    char const** block_file_paths_data,
    size_t* block_file_paths_lens,
    size_t block_file_paths_data_len);
----

== Return Value

0 if the import blocks call was completed successfully, non‐zero otherwise.

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *chainstate_manager* [in]
| Non‐null.
| *block_file_paths_data* [in]
| Nullable, array of block files described by their full filesystem paths.
| *block_file_paths_lens* [in]
| Nullable, array containing the lengths of each of the paths.
| *block_file_paths_data_len* [in]
| Length of the block_file_paths_data and block_file_paths_len arrays.
|===


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