lock_ops.h File Reference

Kamailio locking operations. More...

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Detailed Description

Kamailio locking operations.

Implements simple locks and lock sets.

simple locks:

• gen_lock_t* lock_init(gen_lock_t* lock); - inits the lock
• void lock_destroy(gen_lock_t* lock); - removes the lock (e.g sysv rmid)
• void lock_get(gen_lock_t* lock); - lock (mutex down)
• void lock_release(gen_lock_t* lock); - unlock (mutex up)

lock sets: [implemented only for FL & SYSV so far]

• gen_lock_set_t* lock_set_init(gen_lock_set_t* set); - inits the lock set
• void lock_set_destroy(gen_lock_set_t* s); - removes the lock set
• void lock_set_get(gen_lock_set_t* s, int i); - locks sem i from the set
• void lock_set_release(gen_lock_set_t* s, int i)- unlocks sem i from the set

WARNING:

• lock_set_init may fail for large number of sems (e.g. sysv).
• signals are not treated! (some locks are "awakened" by the signals)

Note:

Warning: do not include this file directly, use instead locking.h (unless you don't need to alloc/dealloc locks).

Todo:

investigate futex support on linux

Definition in file lock_ops.h.