From 458120dd40db6b4df55a4e96b650e16798ef06a0 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@localhost>
Date: Tue, 3 May 2011 11:25:13 +0000
Subject: add hg and python

---
 sys/lib/python/test/test_dummy_threading.py | 73 +++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 sys/lib/python/test/test_dummy_threading.py

(limited to 'sys/lib/python/test/test_dummy_threading.py')

diff --git a/sys/lib/python/test/test_dummy_threading.py b/sys/lib/python/test/test_dummy_threading.py
new file mode 100644
index 000000000..3724f1e5a
--- /dev/null
+++ b/sys/lib/python/test/test_dummy_threading.py
@@ -0,0 +1,73 @@
+# Very rudimentary test of threading module
+
+# Create a bunch of threads, let each do some work, wait until all are done
+
+from test.test_support import verbose
+import random
+import dummy_threading as _threading
+import time
+
+
+class TestThread(_threading.Thread):
+
+    def run(self):
+        global running
+        # Uncomment if testing another module, such as the real 'threading'
+        # module.
+        #delay = random.random() * 2
+        delay = 0
+        if verbose:
+            print 'task', self.getName(), 'will run for', delay, 'sec'
+        sema.acquire()
+        mutex.acquire()
+        running = running + 1
+        if verbose:
+            print running, 'tasks are running'
+        mutex.release()
+        time.sleep(delay)
+        if verbose:
+            print 'task', self.getName(), 'done'
+        mutex.acquire()
+        running = running - 1
+        if verbose:
+            print self.getName(), 'is finished.', running, 'tasks are running'
+        mutex.release()
+        sema.release()
+
+def starttasks():
+    for i in range(numtasks):
+        t = TestThread(name="<thread %d>"%i)
+        threads.append(t)
+        t.start()
+
+
+def test_main():
+    # This takes about n/3 seconds to run (about n/3 clumps of tasks, times
+    # about 1 second per clump).
+    global numtasks
+    numtasks = 10
+
+    # no more than 3 of the 10 can run at once
+    global sema
+    sema = _threading.BoundedSemaphore(value=3)
+    global mutex
+    mutex = _threading.RLock()
+    global running
+    running = 0
+
+    global threads
+    threads = []
+
+    starttasks()
+
+    if verbose:
+        print 'waiting for all tasks to complete'
+    for t in threads:
+        t.join()
+    if verbose:
+        print 'all tasks done'
+
+
+
+if __name__ == '__main__':
+    test_main()
-- 
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