1 files changed, 86 insertions, 0 deletions
diff --git a/tests/common/accel_pppd_process.py b/tests/common/accel_pppd_process.py
new file mode 100644
index 00000000..c2ee451e
--- /dev/null
+++ b/tests/common/accel_pppd_process.py
@@ -0,0 +1,86 @@
+from subprocess import Popen, PIPE
+from common import process
+from threading import Thread
+import time
+
+
+def accel_pppd_thread_func(accel_pppd_control):
+    process = accel_pppd_control["process"]
+    print("accel_pppd_thread_func: before communicate")
+    (out, err) = process.communicate()
+    print(
+        "accel_pppd_thread_func: after communicate out=" + str(out) + " err=" + str(err)
+    )
+    process.wait()
+    print("accel_pppd_thread_func: after wait")
+
+
+def start(accel_pppd, args, accel_cmd, max_wait_time):
+    print("accel_pppd_start: begin")
+    accel_pppd_process = Popen([accel_pppd] + args, stdout=PIPE, stderr=PIPE)
+    accel_pppd_control = {"process": accel_pppd_process}
+    accel_pppd_thread = Thread(
+        target=accel_pppd_thread_func,
+        args=[accel_pppd_control],
+    )
+    accel_pppd_thread.start()
+
+    # wait until accel-pppd replies to 'show version'
+    # accel-pppd needs some time to be accessible
+    sleep_time = 0.0
+    is_started = False
+    while sleep_time < max_wait_time:
+        if accel_pppd_process.poll() is not None:  # process is terminated
+            print(
+                "accel_pppd_start: terminated during 'show version' polling in (sec): "
+                + str(sleep_time)
+            )
+            is_started = False
+            break
+        (exit, out, err) = process.run([accel_cmd, "show version"])
+        if exit != 0:  # does not reply
+            time.sleep(0.1)
+            sleep_time += 0.1
+        else:  # replied
+            print("accel_pppd_start: 'show version' replied")
+            is_started = True
+            break
+
+    return (is_started, accel_pppd_thread, accel_pppd_control)
+
+
+def end(accel_pppd_thread, accel_pppd_control, accel_cmd, max_wait_time):
+    print("accel_pppd_end: begin")
+    if accel_pppd_control["process"].poll() is not None: # terminated
+        print("accel_pppd_end: already terminated. nothing to do")
+        accel_pppd_thread.join() 
+        return
+
+    process.run(
+        [accel_cmd, "shutdown hard"]
+    )  # send shutdown hard command (in coverage mode it helps saving coverage data)
+    print("accel_pppd_end: after shutdown hard")
+
+    # wait until accel-pppd is finished
+    sleep_time = 0.0
+    is_finished = False
+    while sleep_time < max_wait_time:
+        if accel_pppd_control["process"].poll() is None:  # not terminated yet
+            time.sleep(0.01)
+            sleep_time += 0.01
+            # print("accel_pppd_end: sleep 0.01")
+        else:
+            is_finished = True
+            print(
+                "accel_pppd_end: finished via shutdown hard in (sec): "
+                + str(sleep_time)
+            )
+            break
+
+    # accel-pppd is still alive. kill it
+    if not is_finished:
+        print("accel_pppd_end: kill process: " + str(accel_pppd_control["process"]))
+        accel_pppd_control["process"].kill()  # kill -9 if 'shutdown hard' didn't help
+
+    accel_pppd_thread.join()  # wait until thread is finished
+    print("accel_pppd_end: end")