SharedMemory
Project description
SharedMemory
Python shared memory library based an posix-ipc.
Features
- Shared type:
- Basic type (int, float, bool, str)
- list, tuple and dict
- Management of the availability of shared memory space
- Overloaded methods for list and dict
- Semaphore
Future improvement
- Timeout for Semaphore
- Adding nparray support
- Adding more tests
Example
Example of execution in two instances of ipython.
Client side
In [1]: from SharedMemory import SharedMemory
In [2]: # Creating client instance with a shared space named 'shared_space' with a size of 10
...: C = SharedMemory(name="shared_space", value="Hello", client=True)
In [4]: C.getAvailability()
Out[4]: True
In [5]: C.getValue()
Out[5]: 'Hello'
In [6]: # Waiting for Server to update shared data
In [7]: C.getValue()
Out[7]: 'World'
In [8]: C.setValue('HW')
Out[8]: True
In [9]: C.getValue()
Out[9]: 'HW'
In [10]: # Closing the client side
...: C.close()
In [11]: C.getAvailability()
Out[11]: False
Server side
In [1]: from SharedMemory import SharedMemory
In [2]: # Creating server instance access to the shared named 'shared_space'
...: S = SharedMemory(name="shared_space", client=False)
In [4]: S.getAvailability()
Out[4]: True
In [5]: S.getValue()
Out[5]: 'Hello'
In [6]: S.setValue("World")
Out[6]: True
In [7]: S.getValue()
Out[7]: 'Hello'
In [8]: # Waiting for Client to update shared data
In [9]: S.getValue()
Out[9]: 'HW'
In [10]: # Waiting Client to close the shared space
In [11]: S.getAvailability()
Out[11]: False
In [12]: # Closing the server side
...: S.close()
INFO: Client already stopped.
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