Differential D47450 Diff 146068 sys/sys/_rmlock.h

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sys/sys/_rmlock.h

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	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.			* SUCH DAMAGE.
	*/			*/

	#ifndef _SYS__RMLOCK_H_			#ifndef _SYS__RMLOCK_H_
	#define _SYS__RMLOCK_H_			#define _SYS__RMLOCK_H_

				#include <sys/_cpuset.h>
				#include <sys/_lock.h>
				#include <sys/_mutex.h>
				#include <sys/queue.h>
				#include <sys/_sx.h>

				struct thread;

	/*			/*
	* Mostly reader/occasional writer lock.			* Mostly reader/occasional writer lock.
	*/			*/

	LIST_HEAD(rmpriolist,rm_priotracker);			LIST_HEAD(rmpriolist,rm_priotracker);

	struct rm_queue {			struct rm_queue {
	struct rm_queue *volatile rmq_next;			struct rm_queue *volatile rmq_next;
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	struct rm_priotracker {			struct rm_priotracker {
	struct rm_queue rmp_cpuQueue; /* Must be first */			struct rm_queue rmp_cpuQueue; /* Must be first */
	struct rmlock *rmp_rmlock;			struct rmlock *rmp_rmlock;
	struct thread *rmp_thread;			struct thread *rmp_thread;
	int rmp_flags;			int rmp_flags;
	LIST_ENTRY(rm_priotracker) rmp_qentry;			LIST_ENTRY(rm_priotracker) rmp_qentry;
	};			};

	#include <sys/_mutex.h>

	struct rmslock_pcpu;			struct rmslock_pcpu;

	struct rmslock {			struct rmslock {
	struct mtx mtx;			struct mtx mtx;
	struct thread *owner;			struct thread *owner;
	struct rmslock_pcpu *pcpu;			struct rmslock_pcpu *pcpu;
	int writers;			int writers;
	int readers;			int readers;
	int debug_readers;			int debug_readers;
	};			};

	#endif /* !_SYS__RMLOCK_H_ */			#endif /* !_SYS__RMLOCK_H_ */