oe/utils.py: Fix thread leakage in ThreadPool

In order to fix Thread leakage caused by not call join() in Threads,

Pass num_tasks in ThreadPool for add all the tasks into a Queue this
enable catch of Queue.Empty exception and exit the threads.

classes/sstate.bbclass: Change checkstatus function to match new
ThreadPool operation.

(From OE-Core rev: 524d92ed7b53bef933527095e82f378b934f25ef)

Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
index 1e5e98a1da..a80d1ced72 100644
--- a/meta/classes/sstate.bbclass
+++ b/meta/classes/sstate.bbclass
@@ -771,9 +771,10 @@ def sstate_checkhashes(sq_fn, sq_task, sq_hash, sq_hashfn, d, siginfo=False):
             bb.note("Checking sstate mirror object availability (for %s objects)" % len(tasklist))
             import multiprocessing
             nproc = min(multiprocessing.cpu_count(), len(tasklist))
-            pool = oe.utils.ThreadedPool(nproc)
+            pool = oe.utils.ThreadedPool(nproc, len(tasklist))
             for t in tasklist:
                 pool.add_task(checkstatus, t)
+            pool.start()
             pool.wait_completion()
 
     inheritlist = d.getVar("INHERIT", True)