Method Name:
full
Method Signature:
full()
Paramaters:
None
Return Value:
Returns True, if the queue is full.
Returns False, if the queue is not full.
Overview:
- The method full() does the opposite of what empty() does with a Queue instance.
- It returns True, if the queue has reached its maximum capacity. Returns False otherwise.
- Since a Queue instance is synchronized(not reentrant) and used in a producer(s)/consumer(s) scenario, the return value of full() method does not guarantee that a subsequent call to put() or get() will not block.
Example:
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# Example Python program that uses the Queue.full() # method before adding or removing elements from the queue import queue import time import threading
# Constitutes the consumer thread def consume(aQueue): while(True): if aQueue.full() is True: elem = aQueue.get(); time.sleep(1); print("Function consume():Removed an element: %s"%elem);
# Constitutes the producer thread def produce(aQueue): while(True): elem = time.time(); aQueue.put(elem); time.sleep(1); print("Function produce():Added an element: %s"%elem);
# Create a queue with a maximum capacity of five elements aQueue = queue.Queue(maxsize=5); producerThread = threading.Thread(target=produce, args=(aQueue,)); consumerThread = threading.Thread(target=consume, args=(aQueue,));
# Start the threads producerThread.start(); consumerThread.start();
# Wait for the threads to complete producerThread.join(); consumerThread.join(); |
Output:
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Function produce():Added an element: 1574661369.6284108 Function produce():Added an element: 1574661370.645338 Function produce():Added an element: 1574661371.678029 Function produce():Added an element: 1574661372.708281 Function produce():Added an element: 1574661373.725653 Function consume():Removed an element: 1574661369.6284108 Function produce():Added an element: 1574661374.730867 Function consume():Removed an element: 1574661370.645338 Function consume():Removed an element: 1574661371.678029 Function produce():Added an element: 1574661375.733293 … … … |