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819fc6f563
The stick table API was slightly reworked: A global spin lock on stick table was added to perform lookup and insert in a thread safe way. The handling of refcount on entries is now handled directly by stick tables functions under protection of this lock and was removed from the code of callers. The "stktable_store" function is no more externalized and users should now use "stktable_set_entry" in any case of insertion. This last one performs a lookup followed by a store if not found. So the code using "stktable_store" was re-worked. Lookup, and set_entry functions automatically increase the refcount of the returned/stored entry. The function "sticktable_touch" was renamed "sticktable_touch_local" and is now able to decrease the refcount if last arg is set to true. It is allowing to release the entry without taking the lock twice. A new function "sticktable_touch_remote" is now used to insert entries coming from remote peers at the right place in the update tree. The code of peer update was re-worked to use this new function. This function is also able to decrease the refcount if wanted. The function "stksess_kill" also handle a parameter to decrease the refcount on the entry. A read/write lock is added on each entry to protect the data content updates of the entry. |
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