Added an allocator function to allocate the hash in shared memory. Added also locking stuff
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#### Description <!-- Describe your changes in detail --> Added a new allocator function to str_hash.h. This new function allows to allocate the hash table in shared memory.
Changes to struct str_hash_table: - Added a gen_lock_set_t (locks) to hold the lock set - Added an int (locks_no) to hold the number of locks - Added an indicator (memory) to know if the table was allocated in private memory (p) or shared memory(s)
Changes to struct str_hash_head: - Added an int(lock_idx) that hold the index of the lock when the head is locked.
Changes to struct str_hash_entry: - Added a pointer to the head the entry belongs to. This allows to unlock the head when needed.
Added functions to lock and unlock the head when needed.
Modified functions str_hash_add and str_hash_get to lock the head when needed
Added function str_hash_destroy to remove the hash table and all its contents from memory. You can view, comment on, or merge this pull request online at:
https://github.com/kamailio/kamailio/pull/1535
-- Commit Summary --
* str_hash: Option to allocate hash in shm
-- File Changes --
M src/core/str_hash.h (100)
-- Patch Links --
https://github.com/kamailio/kamailio/pull/1535.patch https://github.com/kamailio/kamailio/pull/1535.diff