Package turbomail :: Module pool :: Class Pool

Class Pool

        object --+        
                 |        
threading._Verbose --+    
                     |    
      threading.Thread --+
                         |
                        Pool

Known Subclasses:

MailPool

A thread pool which checks regularly for new jobs and spawns processes as needed.

Do not use this class directly. Always subclass and override the worker method.

Instance Methods

[hide private]

__init__(self, interval=10, threads=4, jobs=10, timeout=60, polling=False, testmode=False, **kw)
Initialize the thread pool.

source code

enqueue(self, work, block=True, timeout=None)
Enqueue a Message instance.

source code

shutdown(self)
Quit the management thread and shutdown the queue.

source code

spawn(self)

source code

run(self)
The management thread.

source code

wrapper(self)
Thread wrapper to log and keep track of the active thread count.

source code

worker(self)
This method must be overridden in a subclass and is used to perform the work of the thread pool.

source code

Inherited from threading.Thread: __repr__, getName, isAlive, isDaemon, join, setDaemon, setName, start

Inherited from threading.Thread (private): _set_daemon

Inherited from threading._Verbose (private): _note

Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __str__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, interval=10, threads=4, jobs=10, timeout=60, polling=False, testmode=False, **kw)
(Constructor)

source code

Initialize the thread pool.

Parameters:

interval (int) - A delay, in seconds, between spawn runs.
threads (int) - The maximum number of concurrent threads.
jobs (int) - The maximum number of jobs a single thread is allowed to handle before dying of old age.
timeout (int) - The amount of time, in seconds, a thread is allowed to sit idle before dying of starvation.
polling (bool) - Enable or disable the periodic polling mechanism. Disabled, threads will be created, as required, when work is enqueued.
testmode (bool) - Enable or disable the unit testing mode. Disabled, no mail is actually sent but only stored in the queue for later retrieval.

Overrides: object.__init__

enqueue(self, work, block=True, timeout=None)

source code

Enqueue a Message instance.

Parameters:

work (callable) - The unit of work can be any callable that returns a three-item tuple containing the sender and recipient addresses and a properly formatted MIME message, in that order. The preferred type is an instance of the Message class or subclass.
block (bool) - Block code execution until there is a free slot in the queue. If block is True and timeout is None, block indefinitely.
timeout (int) - How long to block execution (in seconds). If the timeout expires (or block is false and the queue is full) raise the Full exception.

run(self)

source code

The management thread.

Do not call directly. Instead, use the start method.

Overrides: threading.Thread.run

worker(self)

source code

This method must be overridden in a subclass and is used to perform the work of the thread pool.

Will raise a NotImplementedError exception if not subclassed.

Class Pool

__init__(self, interval=10, threads=4, jobs=10, timeout=60, polling=False, testmode=False, **kw) (Constructor)

enqueue(self, work, block=True, timeout=None)

run(self)

worker(self)

init(self, interval=10, threads=4, jobs=10, timeout=60, polling=False, testmode=False, **kw)
(Constructor)