add multiprocess codecov support

Author: SolenoidWGT

.coveragerc

@@ -1,4 +1,5 @@
 [run]
+concurrency = multiprocessing
 omit =
   ding/utils/slurm_helper.py
   ding/utils/file_helper.py

ding/framework/message_queue/perfs/tests/test_perf_nng.py

@@ -12,3 +12,5 @@ def test_nng():
     ctx = mp.get_context("spawn")
     with ctx.Pool(processes=2) as pool:
         pool.starmap(nng_perf_main, params)
+        pool.close()
+        pool.join()

ding/framework/message_queue/perfs/tests/test_perf_torchrpc_nccl.py

@@ -16,3 +16,5 @@ def test_perf_torchrpc_nccl():
             ctx = mp.get_context("spawn")
             with ctx.Pool(processes=2) as pool:
                 pool.starmap(rpc_model_exchanger, params)
+                pool.close()
+                pool.join()

ding/framework/message_queue/tests/test_torch_rpc.py

@@ -206,6 +206,8 @@ def test_torchrpc():
     if platform.system().lower() != 'windows' and torch_ge_1121():
         with ctx.Pool(processes=4) as pool:
             pool.map(torchrpc, range(4))
+            pool.close()
+            pool.join()
 
 
 @pytest.mark.cudatest
@@ -216,6 +218,8 @@ def test_torchrpc_cuda():
             ctx = get_context("spawn")
             with ctx.Pool(processes=2) as pool:
                 pool.map(torchrpc_cuda, range(2))
+                pool.close()
+                pool.join()
 
 
 @pytest.mark.cudatest
@@ -225,3 +229,5 @@ def test_torchrpc_parser():
         ctx = get_context("spawn")
         with ctx.Pool(processes=1) as pool:
             pool.map(torchrpc_args_parser, range(1))
+            pool.close()
+            pool.join()