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# Date Author Comment
3f404fc5 03/04/2008 03:17 pm Guido Trotter

LockSet: improve remove() api

Lockset's remove() function used to return a list of locks we failed to remove.
Rather than doing this we'll return a list of removed locks, so it's more
similar to how acquire() behaves. This patch also fixes the relevant unit tests....

0cc00929 03/04/2008 03:17 pm Guido Trotter

LockSet: make acquire() return the set of names

In a LockSet acquire() returned True on success. This code changes that to
return a set containing the names of the elements acquired. This is still a
true value if we acquired any lock but is slightly more useful (because if...

7ee7c0c7 03/04/2008 12:09 pm Guido Trotter

Initial GanetiLockManager implementation

Includes some locking-related constants and explanations on how the
LockManager should be used, the class itself and its test cases.

The class includes:
- a basic constructor
- functions to acquire and release lists of locks at the same level...

aaae9bc0 02/28/2008 05:06 pm Guido Trotter

LockSet implementation and unit tests

A LockSet represents locking for a set of resources of the same type. A thread
can acquire multiple resources at the same time, and release some or all of
them, but cannot acquire more resources incrementally at different times...

c9c4f19e 02/26/2008 10:15 pm Michael Hanselmann

Split GanetiUnitTest into testutils.py

Reviewed-by: iustinp

84152b96 02/21/2008 03:45 pm Guido Trotter

Add a few SharedLock delete() tests

- Check that even a shared acquire() fails on a deleted lock
- Check that delete() fails on a lock you share (must own it or nothing)

These are assumptions I build on in future code, so better check for them.
Currently no code change is necessary for them to be valid....

4354ab03 02/20/2008 03:47 pm Guido Trotter

SharedLock: fix a wrong unit-test helper code

The _doItDelete helper code was supposed to be used to dispatch threads that
deleted the SharedLock. It actually just acquired it exclusively. This remained
unnoticed as the helper thread is just used to test interaction, not the delete...

a95fd5d7 02/19/2008 03:50 pm Guido Trotter

Add the delete() operation to SharedLock

This new operation lets a lock be cleanly deleted. The lock will be exclusively
held before deletion, and after it pending and future acquires will raise an
exception. Other SharedLock operations are modify to deal with delete() and to...

d6646186 02/18/2008 06:58 pm Guido Trotter

Fix a couple of SharedLock docstrings

Use the actual class name rather than a spaced version of it.

Reviewed-by: iustinp

162c1c1f 02/08/2008 01:23 pm Guido Trotter

Shared Lock implementation and unit tests.

Adding a locking.py file for the ganeti locking library. Its first component is
the implementation of a non-recursive blocking shared lock complete with a
testing library.

Reviewed-by: imsnah, iustinp

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