testing/epoll: add epoll test case

This commid add an epoll testcase to test the epoll
Test case 1: epoll_wait timeout test.
Test case 2: epoll_wait with driver call poll_notify()
             many times simultaneously.
Test case 3: epoll_wait with some driver/socket need call
             poll_setup() again when it's internal state
             changed.

Signed-off-by: Bowen Wang <[email protected]>

testing/epoll/Kconfig

@@ -0,0 +1,23 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config TESTING_EPOLL
+	tristate "cmocka epoll test"
+	default n
+	depends on TESTING_CMOCKA && TIMER_FD && NET_LOCAL
+	---help---
+		Enable the cmocka driver test
+
+if TESTING_EPOLL
+
+config TESTING_EPOLL_PRIORITY
+	int "Task priority"
+	default 100
+
+config TESTING_EPOLL_STACKSIZE
+	int "Stack size"
+	default DEFAULT_TASK_STACKSIZE
+
+endif

testing/epoll/Make.defs

@@ -0,0 +1,23 @@
+############################################################################
+# apps/testing/epoll/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_TESTING_EPOLL),)
+CONFIGURED_APPS += $(APPDIR)/testing/epoll
+endif

testing/epoll/Makefile

@@ -0,0 +1,29 @@
+############################################################################
+# apps/testing/epoll/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+PRIORITY  = $(CONFIG_TESTING_EPOLL_PRIORITY)
+STACKSIZE = $(CONFIG_TESTING_EPOLL_STACKSIZE)
+MODULE    = $(CONFIG_TESTING_EPOLL)
+MAINSRC  += epoll.c
+PROGNAME += cmocka_epoll
+
+include $(APPDIR)/Application.mk