/*
 * SYS/MPLOCK2.H
 *
 * Implement the MP lock.  Note that debug operations
 */
#ifndef _SYS_MPLOCK2_H_
#define _SYS_MPLOCK2_H_

#include <machine/atomic.h>
#ifndef _SYS_THREAD_H_
#include <sys/thread.h>
#endif
#ifndef _SYS_GLOBALDATA_H_
#include <sys/globaldata.h>
#endif

/*
 * NOTE: try_mplock()/lwkt_trytoken() return non-zero on success.
 */
#define get_mplock()            lwkt_gettoken(&mp_token)
#define try_mplock()            lwkt_trytoken(&mp_token)
#define rel_mplock()            lwkt_reltoken(&mp_token)
#define get_mplock_count(td)    lwkt_cnttoken(&mp_token, td)

void cpu_get_initial_mplock(void);

#define MP_LOCK_HELD()          LWKT_TOKEN_HELD_EXCL(&mp_token)
#define ASSERT_MP_LOCK_HELD()   ASSERT_LWKT_TOKEN_HELD_EXCL(&mp_token)

#endif