1*a1e26a70SApple OSS Distributions<h2>lock_set_create</h2> 2*a1e26a70SApple OSS Distributions<hr> 3*a1e26a70SApple OSS Distributions<p> 4*a1e26a70SApple OSS Distributions<strong>Function</strong> - Create a new lock set. 5*a1e26a70SApple OSS Distributions<h3>SYNOPSIS</h3> 6*a1e26a70SApple OSS Distributions<pre> 7*a1e26a70SApple OSS Distributions<strong>kern_return_t lock_set_create</strong> 8*a1e26a70SApple OSS Distributions <strong>(task_t</strong> <var>task</var>, 9*a1e26a70SApple OSS Distributions <strong>lock_set_t</strong> <var>lock_set</var>, 10*a1e26a70SApple OSS Distributions <strong>int</strong> <var>locks</var>, 11*a1e26a70SApple OSS Distributions <strong>int</strong> <var>policy</var><strong>);</strong> 12*a1e26a70SApple OSS Distributions</pre> 13*a1e26a70SApple OSS Distributions<h3>PARAMETERS</h3> 14*a1e26a70SApple OSS Distributions<dl> 15*a1e26a70SApple OSS Distributions<p> 16*a1e26a70SApple OSS Distributions<dt> <var>task</var> 17*a1e26a70SApple OSS Distributions<dd> 18*a1e26a70SApple OSS DistributionsThe task receiving the send right to the newly created lock set. 19*a1e26a70SApple OSS Distributions<p> 20*a1e26a70SApple OSS Distributions<dt> <var>lock_set</var> 21*a1e26a70SApple OSS Distributions<dd> 22*a1e26a70SApple OSS Distributions[out send right] The port naming the lock set which represents the lock. 23*a1e26a70SApple OSS Distributions<p> 24*a1e26a70SApple OSS Distributions<dt> <var>locks</var> 25*a1e26a70SApple OSS Distributions<dd> 26*a1e26a70SApple OSS Distributions[in scalar] The number of locks the lock set will represent (must be a positive value). 27*a1e26a70SApple OSS Distributions<p> 28*a1e26a70SApple OSS Distributions<dt> <var>policy</var> 29*a1e26a70SApple OSS Distributions<dd> 30*a1e26a70SApple OSS Distributions[in scalar] The blocked thread wakeup policy for the newly created lock set. Valid policies are: 31*a1e26a70SApple OSS Distributions <dl> 32*a1e26a70SApple OSS Distributions<p> 33*a1e26a70SApple OSS Distributions<dt> SYNC_POLICY_FIFO 34*a1e26a70SApple OSS Distributions<dd> 35*a1e26a70SApple OSS Distributionsa first-in-first-out policy for scheduling thread wakeup. 36*a1e26a70SApple OSS Distributions<p> 37*a1e26a70SApple OSS Distributions<dt> SYNC_POLICY_FIXED_PRIORITY 38*a1e26a70SApple OSS Distributions<dd> 39*a1e26a70SApple OSS Distributionsa fixed priority policy for scheduling thread wakeup. 40*a1e26a70SApple OSS Distributions</dl> 41*a1e26a70SApple OSS Distributions</dl> 42*a1e26a70SApple OSS Distributions<h3>DESCRIPTION</h3> 43*a1e26a70SApple OSS Distributions<p> 44*a1e26a70SApple OSS DistributionsThe <strong>lock_set_create</strong> function creates a new lock set representing a 45*a1e26a70SApple OSS Distributionscollection of associated locks. The lock set is associated with the 46*a1e26a70SApple OSS Distributionsspecified task. A send right naming the lock set is returned to the 47*a1e26a70SApple OSS Distributionscaller. 48*a1e26a70SApple OSS Distributions<h3>RETURN VALUES</h3> 49*a1e26a70SApple OSS Distributions<dl> 50*a1e26a70SApple OSS Distributions<p> 51*a1e26a70SApple OSS Distributions<dt> <strong>KERN_SUCCESS</strong> 52*a1e26a70SApple OSS Distributions<dd> 53*a1e26a70SApple OSS DistributionsThe lock set was created. 54*a1e26a70SApple OSS Distributions<p> 55*a1e26a70SApple OSS Distributions<dt> <strong>KERN_INVALID_ARGUMENT</strong> 56*a1e26a70SApple OSS Distributions<dd> 57*a1e26a70SApple OSS DistributionsEither the task or policy argument is invalid, or the locks argument 58*a1e26a70SApple OSS Distributionshas a value that is less than or equal to zero. 59*a1e26a70SApple OSS Distributions<p> 60*a1e26a70SApple OSS Distributions<dt> <strong>KERN_RESOURCE_SHORTAGE</strong> 61*a1e26a70SApple OSS Distributions<dd> 62*a1e26a70SApple OSS DistributionsThe kernel could not allocate the lock set. 63*a1e26a70SApple OSS Distributions</dl> 64*a1e26a70SApple OSS Distributions<h3>RELATED INFORMATION</h3> 65*a1e26a70SApple OSS Distributions<p> 66*a1e26a70SApple OSS DistributionsFunctions: 67*a1e26a70SApple OSS Distributions<a href="lock_acquire.html"><strong>lock_acquire</strong></a>, 68*a1e26a70SApple OSS Distributions<a href="lock_make_stable.html"><strong>lock_make_stable</strong></a>, 69*a1e26a70SApple OSS Distributions<a href="lock_try.html"><strong>lock_try</strong></a>, 70*a1e26a70SApple OSS Distributions<a href="lock_handoff.html"><strong>lock_handoff</strong></a>, 71*a1e26a70SApple OSS Distributions<a href="lock_handoff_accept.html"><strong>lock_handoff_accept</strong></a>, 72*a1e26a70SApple OSS Distributions<a href="lock_try.html"><strong>lock_try</strong></a>, 73*a1e26a70SApple OSS Distributions<a href="lock_set_destroy.html"><strong>lock_set_destroy</strong></a>. 74