1*699cd480SApple OSS Distributions<h2>lock_set_create</h2> 2*699cd480SApple OSS Distributions<hr> 3*699cd480SApple OSS Distributions<p> 4*699cd480SApple OSS Distributions<strong>Function</strong> - Create a new lock set. 5*699cd480SApple OSS Distributions<h3>SYNOPSIS</h3> 6*699cd480SApple OSS Distributions<pre> 7*699cd480SApple OSS Distributions<strong>kern_return_t lock_set_create</strong> 8*699cd480SApple OSS Distributions <strong>(task_t</strong> <var>task</var>, 9*699cd480SApple OSS Distributions <strong>lock_set_t</strong> <var>lock_set</var>, 10*699cd480SApple OSS Distributions <strong>int</strong> <var>locks</var>, 11*699cd480SApple OSS Distributions <strong>int</strong> <var>policy</var><strong>);</strong> 12*699cd480SApple OSS Distributions</pre> 13*699cd480SApple OSS Distributions<h3>PARAMETERS</h3> 14*699cd480SApple OSS Distributions<dl> 15*699cd480SApple OSS Distributions<p> 16*699cd480SApple OSS Distributions<dt> <var>task</var> 17*699cd480SApple OSS Distributions<dd> 18*699cd480SApple OSS DistributionsThe task receiving the send right to the newly created lock set. 19*699cd480SApple OSS Distributions<p> 20*699cd480SApple OSS Distributions<dt> <var>lock_set</var> 21*699cd480SApple OSS Distributions<dd> 22*699cd480SApple OSS Distributions[out send right] The port naming the lock set which represents the lock. 23*699cd480SApple OSS Distributions<p> 24*699cd480SApple OSS Distributions<dt> <var>locks</var> 25*699cd480SApple OSS Distributions<dd> 26*699cd480SApple OSS Distributions[in scalar] The number of locks the lock set will represent (must be a positive value). 27*699cd480SApple OSS Distributions<p> 28*699cd480SApple OSS Distributions<dt> <var>policy</var> 29*699cd480SApple OSS Distributions<dd> 30*699cd480SApple OSS Distributions[in scalar] The blocked thread wakeup policy for the newly created lock set. Valid policies are: 31*699cd480SApple OSS Distributions <dl> 32*699cd480SApple OSS Distributions<p> 33*699cd480SApple OSS Distributions<dt> SYNC_POLICY_FIFO 34*699cd480SApple OSS Distributions<dd> 35*699cd480SApple OSS Distributionsa first-in-first-out policy for scheduling thread wakeup. 36*699cd480SApple OSS Distributions<p> 37*699cd480SApple OSS Distributions<dt> SYNC_POLICY_FIXED_PRIORITY 38*699cd480SApple OSS Distributions<dd> 39*699cd480SApple OSS Distributionsa fixed priority policy for scheduling thread wakeup. 40*699cd480SApple OSS Distributions</dl> 41*699cd480SApple OSS Distributions</dl> 42*699cd480SApple OSS Distributions<h3>DESCRIPTION</h3> 43*699cd480SApple OSS Distributions<p> 44*699cd480SApple OSS DistributionsThe <strong>lock_set_create</strong> function creates a new lock set representing a 45*699cd480SApple OSS Distributionscollection of associated locks. The lock set is associated with the 46*699cd480SApple OSS Distributionsspecified task. A send right naming the lock set is returned to the 47*699cd480SApple OSS Distributionscaller. 48*699cd480SApple OSS Distributions<h3>RETURN VALUES</h3> 49*699cd480SApple OSS Distributions<dl> 50*699cd480SApple OSS Distributions<p> 51*699cd480SApple OSS Distributions<dt> <strong>KERN_SUCCESS</strong> 52*699cd480SApple OSS Distributions<dd> 53*699cd480SApple OSS DistributionsThe lock set was created. 54*699cd480SApple OSS Distributions<p> 55*699cd480SApple OSS Distributions<dt> <strong>KERN_INVALID_ARGUMENT</strong> 56*699cd480SApple OSS Distributions<dd> 57*699cd480SApple OSS DistributionsEither the task or policy argument is invalid, or the locks argument 58*699cd480SApple OSS Distributionshas a value that is less than or equal to zero. 59*699cd480SApple OSS Distributions<p> 60*699cd480SApple OSS Distributions<dt> <strong>KERN_RESOURCE_SHORTAGE</strong> 61*699cd480SApple OSS Distributions<dd> 62*699cd480SApple OSS DistributionsThe kernel could not allocate the lock set. 63*699cd480SApple OSS Distributions</dl> 64*699cd480SApple OSS Distributions<h3>RELATED INFORMATION</h3> 65*699cd480SApple OSS Distributions<p> 66*699cd480SApple OSS DistributionsFunctions: 67*699cd480SApple OSS Distributions<a href="lock_acquire.html"><strong>lock_acquire</strong></a>, 68*699cd480SApple OSS Distributions<a href="lock_make_stable.html"><strong>lock_make_stable</strong></a>, 69*699cd480SApple OSS Distributions<a href="lock_try.html"><strong>lock_try</strong></a>, 70*699cd480SApple OSS Distributions<a href="lock_handoff.html"><strong>lock_handoff</strong></a>, 71*699cd480SApple OSS Distributions<a href="lock_handoff_accept.html"><strong>lock_handoff_accept</strong></a>, 72*699cd480SApple OSS Distributions<a href="lock_try.html"><strong>lock_try</strong></a>, 73*699cd480SApple OSS Distributions<a href="lock_set_destroy.html"><strong>lock_set_destroy</strong></a>. 74