1*c54f35caSApple OSS Distributions<h2>lock_set_create</h2> 2*c54f35caSApple OSS Distributions<hr> 3*c54f35caSApple OSS Distributions<p> 4*c54f35caSApple OSS Distributions<strong>Function</strong> - Create a new lock set. 5*c54f35caSApple OSS Distributions<h3>SYNOPSIS</h3> 6*c54f35caSApple OSS Distributions<pre> 7*c54f35caSApple OSS Distributions<strong>kern_return_t lock_set_create</strong> 8*c54f35caSApple OSS Distributions <strong>(task_t</strong> <var>task</var>, 9*c54f35caSApple OSS Distributions <strong>lock_set_t</strong> <var>lock_set</var>, 10*c54f35caSApple OSS Distributions <strong>int</strong> <var>locks</var>, 11*c54f35caSApple OSS Distributions <strong>int</strong> <var>policy</var><strong>);</strong> 12*c54f35caSApple OSS Distributions</pre> 13*c54f35caSApple OSS Distributions<h3>PARAMETERS</h3> 14*c54f35caSApple OSS Distributions<dl> 15*c54f35caSApple OSS Distributions<p> 16*c54f35caSApple OSS Distributions<dt> <var>task</var> 17*c54f35caSApple OSS Distributions<dd> 18*c54f35caSApple OSS DistributionsThe task receiving the send right to the newly created lock set. 19*c54f35caSApple OSS Distributions<p> 20*c54f35caSApple OSS Distributions<dt> <var>lock_set</var> 21*c54f35caSApple OSS Distributions<dd> 22*c54f35caSApple OSS Distributions[out send right] The port naming the lock set which represents the lock. 23*c54f35caSApple OSS Distributions<p> 24*c54f35caSApple OSS Distributions<dt> <var>locks</var> 25*c54f35caSApple OSS Distributions<dd> 26*c54f35caSApple OSS Distributions[in scalar] The number of locks the lock set will represent (must be a positive value). 27*c54f35caSApple OSS Distributions<p> 28*c54f35caSApple OSS Distributions<dt> <var>policy</var> 29*c54f35caSApple OSS Distributions<dd> 30*c54f35caSApple OSS Distributions[in scalar] The blocked thread wakeup policy for the newly created lock set. Valid policies are: 31*c54f35caSApple OSS Distributions <dl> 32*c54f35caSApple OSS Distributions<p> 33*c54f35caSApple OSS Distributions<dt> SYNC_POLICY_FIFO 34*c54f35caSApple OSS Distributions<dd> 35*c54f35caSApple OSS Distributionsa first-in-first-out policy for scheduling thread wakeup. 36*c54f35caSApple OSS Distributions<p> 37*c54f35caSApple OSS Distributions<dt> SYNC_POLICY_FIXED_PRIORITY 38*c54f35caSApple OSS Distributions<dd> 39*c54f35caSApple OSS Distributionsa fixed priority policy for scheduling thread wakeup. 40*c54f35caSApple OSS Distributions</dl> 41*c54f35caSApple OSS Distributions</dl> 42*c54f35caSApple OSS Distributions<h3>DESCRIPTION</h3> 43*c54f35caSApple OSS Distributions<p> 44*c54f35caSApple OSS DistributionsThe <strong>lock_set_create</strong> function creates a new lock set representing a 45*c54f35caSApple OSS Distributionscollection of associated locks. The lock set is associated with the 46*c54f35caSApple OSS Distributionsspecified task. A send right naming the lock set is returned to the 47*c54f35caSApple OSS Distributionscaller. 48*c54f35caSApple OSS Distributions<h3>RETURN VALUES</h3> 49*c54f35caSApple OSS Distributions<dl> 50*c54f35caSApple OSS Distributions<p> 51*c54f35caSApple OSS Distributions<dt> <strong>KERN_SUCCESS</strong> 52*c54f35caSApple OSS Distributions<dd> 53*c54f35caSApple OSS DistributionsThe lock set was created. 54*c54f35caSApple OSS Distributions<p> 55*c54f35caSApple OSS Distributions<dt> <strong>KERN_INVALID_ARGUMENT</strong> 56*c54f35caSApple OSS Distributions<dd> 57*c54f35caSApple OSS DistributionsEither the task or policy argument is invalid, or the locks argument 58*c54f35caSApple OSS Distributionshas a value that is less than or equal to zero. 59*c54f35caSApple OSS Distributions<p> 60*c54f35caSApple OSS Distributions<dt> <strong>KERN_RESOURCE_SHORTAGE</strong> 61*c54f35caSApple OSS Distributions<dd> 62*c54f35caSApple OSS DistributionsThe kernel could not allocate the lock set. 63*c54f35caSApple OSS Distributions</dl> 64*c54f35caSApple OSS Distributions<h3>RELATED INFORMATION</h3> 65*c54f35caSApple OSS Distributions<p> 66*c54f35caSApple OSS DistributionsFunctions: 67*c54f35caSApple OSS Distributions<a href="lock_acquire.html"><strong>lock_acquire</strong></a>, 68*c54f35caSApple OSS Distributions<a href="lock_make_stable.html"><strong>lock_make_stable</strong></a>, 69*c54f35caSApple OSS Distributions<a href="lock_try.html"><strong>lock_try</strong></a>, 70*c54f35caSApple OSS Distributions<a href="lock_handoff.html"><strong>lock_handoff</strong></a>, 71*c54f35caSApple OSS Distributions<a href="lock_handoff_accept.html"><strong>lock_handoff_accept</strong></a>, 72*c54f35caSApple OSS Distributions<a href="lock_try.html"><strong>lock_try</strong></a>, 73*c54f35caSApple OSS Distributions<a href="lock_set_destroy.html"><strong>lock_set_destroy</strong></a>. 74