Task do_configure delivered by npm.bbclass takes a lot of time, the longer shrinkwrap dependency list the longer time needed for do_configure to execute.

Following improvement allows to execute do_configure on any available CPI threads.

diff --git a/bitbake/lib/bb/fetch2/npmsw.py b/bitbake/lib/bb/fetch2/npmsw.py

index 0c3511d8ab..0e6075859c 100644

--- a/bitbake/lib/bb/fetch2/npmsw.py

+++ b/bitbake/lib/bb/fetch2/npmsw.py

@@ -29,8 +29,9 @@ from bb.fetch2.npm import npm_integrity

 from bb.fetch2.npm import npm_localfile

 from bb.fetch2.npm import npm_unpack

 from bb.utils import is_semver

+from concurrent.futures import ThreadPoolExecutor

 

-def foreach_dependencies(shrinkwrap, callback=None, dev=False):

+def foreach_dependencies(shrinkwrap, callback=None, dev=False, executor=None):

     """

         Run a callback for each dependencies of a shrinkwrap file.

         The callback is using the format:

@@ -49,7 +50,10 @@ def foreach_dependencies(shrinkwrap, callback=None, dev=False):

                     continue

                 elif deps[name].get("bundled", False):

                     continue

-                callback(name, deps[name], subtree)

+                if executor:

+                    executor.submit(callback, name=name, params=deps[name], deptree=subtree)

+                else:

+                    callback(name, deps[name], subtree)

 

     _walk_deps(shrinkwrap.get("dependencies", {}), [])

 

diff --git a/meta/classes/npm.bbclass b/meta/classes/npm.bbclass

index 068032a1e5..1869b63cdb 100644

--- a/meta/classes/npm.bbclass

+++ b/meta/classes/npm.bbclass

@@ -80,6 +80,7 @@ python npm_do_configure() {

     from bb.fetch2.npm import npm_unpack

     from bb.fetch2.npmsw import foreach_dependencies

     from bb.progress import OutOfProgressHandler

+    from concurrent.futures import ThreadPoolExecutor

 

     bb.utils.remove(d.getVar("NPM_CACHE"), recurse=True)

     bb.utils.remove(d.getVar("NPM_PACKAGE"), recurse=True)

@@ -164,9 +165,11 @@ python npm_do_configure() {

             progress_done += 1

             progress.write("%d/%d" % (progress_done, progress_total))

 

+    executor = ThreadPoolExecutor(max_workers = os.cpu_count())

     dev = bb.utils.to_boolean(d.getVar("NPM_INSTALL_DEV"), False)

     foreach_dependencies(orig_shrinkwrap, _count_dependency, dev)

-    foreach_dependencies(orig_shrinkwrap, _cache_dependency, dev)

+    foreach_dependencies(orig_shrinkwrap, _cache_dependency, dev, executor)

+    executor.shutdown(True)

 

     # Configure the main package

     with tempfile.TemporaryDirectory() as tmpdir: