#ifndef _KERN_LOCK_GROUP_H
#define _KERN_LOCK_GROUP_H
#include <kern/queue.h>
#include <mach/mach_types.h>
#define LCK_GRP_NULL (lck_grp_t *)NULL
typedef unsigned int lck_type_t;
#define LCK_TYPE_SPIN 1
#define LCK_TYPE_MTX 2
#define LCK_TYPE_RW 3
#if XNU_KERNEL_PRIVATE
#include <os/refcnt.h>
#if LOCK_STATS
#define LCK_GRP_ARG(expr) ,expr
#define LCK_GRP_PROBEARG(grp) grp
#else
#define LCK_GRP_ARG(expr)
#define LCK_GRP_PROBEARG(grp) LCK_GRP_NULL
#endif
typedef struct _lck_grp_stat_ {
uint64_t lgs_count;
uint32_t lgs_enablings;
#if CONFIG_DTRACE
uint32_t lgs_probeid;
uint64_t lgs_limit;
#endif
} lck_grp_stat_t;
typedef struct _lck_grp_stats_ {
#if LOCK_STATS
lck_grp_stat_t lgss_spin_held;
lck_grp_stat_t lgss_spin_miss;
lck_grp_stat_t lgss_spin_spin;
#endif
lck_grp_stat_t lgss_mtx_held;
lck_grp_stat_t lgss_mtx_direct_wait;
lck_grp_stat_t lgss_mtx_miss;
lck_grp_stat_t lgss_mtx_wait;
} lck_grp_stats_t;
#define LCK_GRP_MAX_NAME 64
typedef struct _lck_grp_ {
queue_chain_t lck_grp_link;
os_refcnt_t lck_grp_refcnt;
uint32_t lck_grp_spincnt;
uint32_t lck_grp_mtxcnt;
uint32_t lck_grp_rwcnt;
uint32_t lck_grp_attr;
char lck_grp_name[LCK_GRP_MAX_NAME];
lck_grp_stats_t lck_grp_stats;
} lck_grp_t;
#else
typedef struct _lck_grp_ lck_grp_t;
#endif
#ifdef MACH_KERNEL_PRIVATE
typedef struct _lck_grp_attr_ {
uint32_t grp_attr_val;
} lck_grp_attr_t;
extern lck_grp_attr_t LockDefaultGroupAttr;
#define LCK_GRP_ATTR_STAT 0x1
#define LCK_GRP_ATTR_TIME_STAT 0x2
#else
typedef struct __lck_grp_attr__ lck_grp_attr_t;
#endif
#define LCK_GRP_ATTR_NULL (lck_grp_attr_t *)NULL
__BEGIN_DECLS
extern lck_grp_attr_t *lck_grp_attr_alloc_init(
void);
extern void lck_grp_attr_setdefault(
lck_grp_attr_t *attr);
extern void lck_grp_attr_setstat(
lck_grp_attr_t *attr);
extern void lck_grp_attr_free(
lck_grp_attr_t *attr);
extern lck_grp_t *lck_grp_alloc_init(
const char* grp_name,
lck_grp_attr_t *attr);
extern void lck_grp_free(
lck_grp_t *grp);
__END_DECLS
#ifdef MACH_KERNEL_PRIVATE
extern void lck_grp_init(
lck_grp_t *grp,
const char* grp_name,
lck_grp_attr_t *attr);
extern void lck_grp_reference(
lck_grp_t *grp);
extern void lck_grp_deallocate(
lck_grp_t *grp);
extern void lck_grp_lckcnt_incr(
lck_grp_t *grp,
lck_type_t lck_type);
extern void lck_grp_lckcnt_decr(
lck_grp_t *grp,
lck_type_t lck_type);
#endif
#endif