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