Make a small function thread safe

[Brad Tilley]

On Fri, Dec 16, 2011 at 8:33 AM, Tim Wintle <tim.wintle at teamrubber.com>wrote:

> On Fri, 2011-12-16 at 05:21 -0800, Brad Tilley wrote:
> > 107         void increment_counter( unsigned int& counter )
> > 108         {
> > 109                 boost::mutex::scoped_lock lock( counter_lock );
> > 110                 ++counter;
> > 111         }
>
>
> with counter_lock:
>    counter += 1
>
>
> ... where counter_lock is a threading.Lock instance.
>
> (see docs for the threading module)




So something like this then:

import threading

shared_container = []
lock = threading.Lock()

class thread_example( threading.Thread ):

    def __init__( self ):
        threading.Thread.__init__ (self)

    def run(t):
        lock
        shared_container.append(t.name)

# main

threads = []
for i in xrange(10):
    thread = thread_example()
    threads.append(thread)

for thread in threads:
    thread.start()

for item in shared_container:
    print item
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