locking.h File Reference

Kamailio locking library. More...

#include "lock_ops.h"
#include "lock_alloc.h"

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Detailed Description

Kamailio locking library.

Implements (in lock_ops.h & lock_alloc.h):

simple locks:

• type: gen_lock_t
• gen_lock_t* lock_alloc(); - allocates a lock in shared mem.
• 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_dealloc(gen_lock_t* lock); - deallocates the lock's shared m.
• void lock_get(gen_lock_t* lock); - lock (mutex down)
• void lock_release(gen_lock_t* lock); - unlock (mutex up)

lock sets:

• type: gen_lock_set_t
• gen_lock_set_t* lock_set_alloc(no) - allocs a lock set in shm.
• 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_dealloc(gen_lock_set_t* s); - deallocs the lock set shm.
• 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)

Definition in file locking.h.