Data Fields

void *(* alloc )(unsigned locktype) Function to allocate and initialize new lock of type 'locktype'. void(* free )(void *lock, unsigned locktype) Funtion to release all storage held in 'lock', which was created with type 'locktype'. int(* lock )(unsigned mode, void *lock) Acquire an already-allocated lock at 'lock' with mode 'mode'. int lock_api_version The current version of the locking API. unsigned supported_locktypes Which kinds of locks does this version of the locking API support? A bitfield of EVTHREAD_LOCKTYPE_RECURSIVE and EVTHREAD_LOCKTYPE_READWRITE. int(* unlock )(unsigned mode, void *lock) Release a lock at 'lock' using mode 'mode'.

void*(* evthread_lock_callbacks::alloc)(unsigned locktype)

Function to allocate and initialize new lock of type 'locktype'. Returns NULL on failure.

void(* evthread_lock_callbacks::free)(void *lock, unsigned locktype)

Funtion to release all storage held in 'lock', which was created with type 'locktype'.

int(* evthread_lock_callbacks::lock)(unsigned mode, void *lock)

Acquire an already-allocated lock at 'lock' with mode 'mode'. Returns 0 on success, and nonzero on failure.

int evthread_lock_callbacks::lock_api_version

The current version of the locking API. Set this to EVTHREAD_LOCK_API_VERSION

unsigned evthread_lock_callbacks::supported_locktypes

Which kinds of locks does this version of the locking API support? A bitfield of EVTHREAD_LOCKTYPE_RECURSIVE and EVTHREAD_LOCKTYPE_READWRITE. (Note that RECURSIVE locks are currently mandatory, and READWRITE locks are not currently used.)

int(* evthread_lock_callbacks::unlock)(unsigned mode, void *lock)

Release a lock at 'lock' using mode 'mode'. Returns 0 on success, and nonzero on failure.