#include <errno.h>
#include <mach/mach.h>
#include <mach/mach_error.h>
+#include <libkern/OSAtomic.h>
#ifndef __POSIX_LIB__
#include "pthread_spinlock.h" /* spinlock definitions. */
TAILQ_HEAD(__pthread_list, _pthread);
+
+extern int __pthread_lock_debug;
+extern int __pthread_lock_old;
+
extern struct __pthread_list __pthread_head; /* head of list of open files */
extern pthread_lock_t _pthread_list_lock;
extern size_t pthreadsize;
/*
* Threads
*/
+#define MAXTHREADNAMESIZE 64
#define _PTHREAD_T
typedef struct _pthread
{
long sig; /* Unique signature for this structure */
struct __darwin_pthread_handler_rec *__cleanup_stack;
pthread_lock_t lock; /* Used for internal mutex on structure */
- u_int32_t detached:8,
+ uint32_t detached:8,
inherit:8,
policy:8,
freeStackOnExit:1,
kernalloc:1,
schedset:1,
wqthread:1,
- pad:3;
+ wqkillset:1,
+ pad:2;
size_t guardsize; /* size in bytes to guard stack overflow */
#if !defined(__LP64__)
int pad0; /* for backwards compatibility */
#endif
struct sched_param param;
- struct _pthread_mutex *mutexes;
+ uint32_t cancel_error;
+#if defined(__LP64__)
+ uint32_t cancel_pad; /* pad value for alignment */
+#endif
struct _pthread *joiner;
#if !defined(__LP64__)
int pad1; /* for backwards compatibility */
#endif
void *cthread_self; /* cthread_self() if somebody calls cthread_set_self() */
/* protected by list lock */
- u_int32_t childrun:1,
+ uint32_t childrun:1,
parentcheck:1,
childexit:1,
pad3:29;
void * freeaddr;
size_t freesize;
mach_port_t joiner_notify;
- char pthread_name[64]; /* including nulll the name */
+ char pthread_name[MAXTHREADNAMESIZE]; /* including nulll the name */
int max_tsd_key;
void * cur_workq;
void * cur_workitem;
+ uint64_t thread_id;
} *pthread_t;
-/*
- * This will cause a compile-time failure if someone moved the tsd field
- * and we need to change _PTHREAD_TSD_OFFSET in pthread_machdep.h
- */
-typedef char _need_to_change_PTHREAD_TSD_OFFSET[(_PTHREAD_TSD_OFFSET == offsetof(struct _pthread, tsd[0])) ? 0 : -1] ;
-
/*
* Thread attributes
*/
{
long sig; /* Unique signature for this structure */
pthread_lock_t lock;
- u_int32_t detached:8,
+ uint32_t detached:8,
inherit:8,
policy:8,
freeStackOnExit:1,
/*
* Mutex attributes
*/
+#define _PTHREAD_MUTEX_POLICY_NONE 0
+#define _PTHREAD_MUTEX_POLICY_FAIRSHARE 1
+#define _PTHREAD_MUTEX_POLICY_FIRSTFIT 2
+#define _PTHREAD_MUTEX_POLICY_REALTIME 3
+#define _PTHREAD_MUTEX_POLICY_ADAPTIVE 4
+#define _PTHREAD_MUTEX_POLICY_PRIPROTECT 5
+#define _PTHREAD_MUTEX_POLICY_PRIINHERIT 6
+
#define _PTHREAD_MUTEXATTR_T
typedef struct
{
long sig; /* Unique signature for this structure */
int prioceiling;
- u_int32_t protocol:2, /* protocol attribute */
+ uint32_t protocol:2, /* protocol attribute */
type:2, /* mutex type */
pshared:2,
- rfu:26;
+ policy:3,
+ rfu:23;
} pthread_mutexattr_t;
/*
* Mutex variables
*/
+struct _pthread_mutex_options {
+ uint32_t protocol:2, /* protocol */
+ type:2, /* mutex type */
+ pshared:2, /* mutex type */
+ policy:3,
+ hold:2,
+ misalign:1, /* 8 byte aligned? */
+ notify:1, /* CV notify field for kernel */
+ mutex:1, /* used in clrprepo that it is a mutex */
+ rfu:2,
+ lock_count:16;
+};
+
+
+#define _PTHREAD_MTX_OPT_PSHARED 0x010
+#define _PTHREAD_MTX_OPT_HOLD 0x200 /* current owner of the mutex */
+#define _PTHREAD_MTX_OPT_NOMTX 0x400 /* no mutex refs held */
+
+#define _PTHREAD_MTX_OPT_NOTIFY 0x1000 /* notify to drop mutex handling in cvwait */
+#define _PTHREAD_MTX_OPT_MUTEX 0x2000 /* this is a mutex type */
+
+
#define _PTHREAD_MUTEX_T
typedef struct _pthread_mutex
{
long sig; /* Unique signature for this structure */
pthread_lock_t lock; /* Used for internal mutex on structure */
- u_int32_t waiters; /* Count of threads waiting for this mutex */
-#define _pthread_mutex_kernid waiters
+ union {
+ uint32_t value;
+ struct _pthread_mutex_options options;
+ } mtxopts;
+ int16_t prioceiling;
+ int16_t priority; /* Priority to restore when mutex unlocked */
+ uint32_t waiters; /* Count of threads waiting for this mutex */
pthread_t owner; /* Which thread has this mutex locked */
- semaphore_t sem; /* Semaphore used for waiting */
- u_int32_t protocol:2, /* protocol */
- type:2, /* mutex type */
- pshared:2, /* mutex type */
- rfu:10,
- lock_count:16;
struct _pthread_mutex *next, *prev; /* List of other mutexes he owns */
struct _pthread_cond *busy; /* List of condition variables using this mutex */
- int16_t prioceiling;
- int16_t priority; /* Priority to restore when mutex unlocked */
+ semaphore_t sem; /* Semaphore used for waiting */
semaphore_t order;
} pthread_mutex_t;
+typedef struct _npthread_mutex
+{
+/* keep same as pthread_mutex_t from here to .. */
+ long sig; /* Unique signature for this structure */
+ pthread_lock_t lock; /* Used for static init sequencing */
+ union {
+ uint32_t value;
+ struct _pthread_mutex_options options;
+ } mtxopts;
+ int16_t prioceiling;
+ int16_t priority; /* Priority to restore when mutex unlocked */
+ uint32_t m_seq[3];
+#if defined(__LP64__)
+ uint64_t m_tid; /* Which thread has this mutex locked */
+ uint32_t * m_lseqaddr;
+ uint32_t * m_useqaddr;
+ uint32_t reserved[2];
+#else
+ uint32_t * m_lseqaddr;
+ uint64_t m_tid; /* Which thread has this mutex locked */
+ uint32_t * m_useqaddr;
+#endif
+} npthread_mutex_t;
+
+
+
/*
* Condition variable attributes
typedef struct
{
long sig; /* Unique signature for this structure */
- u_int32_t pshared:2, /* pshared */
+ uint32_t pshared:2, /* pshared */
unsupported:30;
} pthread_condattr_t;
{
long sig; /* Unique signature for this structure */
pthread_lock_t lock; /* Used for internal mutex on structure */
- semaphore_t sem; /* Kernel semaphore */
-#define _pthread_cond_kernid sem
- struct _pthread_cond *next, *prev; /* List of condition variables using mutex */
- struct _pthread_mutex *busy; /* mutex associated with variable */
- u_int32_t waiters:15, /* Number of threads waiting */
+ uint32_t waiters:15, /* Number of threads waiting */
sigspending:15, /* Number of outstanding signals */
pshared:2;
+ struct _pthread_cond *next, *prev; /* List of condition variables using mutex */
+ struct _pthread_mutex *busy; /* mutex associated with variable */
+ semaphore_t sem; /* Kernel semaphore */
} pthread_cond_t;
+
+typedef struct _npthread_cond
+{
+ long sig; /* Unique signature for this structure */
+ pthread_lock_t lock; /* Used for internal mutex on structure */
+ uint32_t rfu:29, /* not in use*/
+ misalign: 1, /* structure is not aligned to 8 byte boundary */
+ pshared:2;
+ struct _npthread_mutex *busy; /* mutex associated with variable */
+ uint32_t c_seq[3];
+#if defined(__LP64__)
+ uint32_t reserved[3];
+#endif /* __LP64__ */
+} npthread_cond_t;
+
/*
* Initialization control (once) variables
*/
long sig;
pthread_mutex_t lock; /* monitor lock */
int state;
-#define _pthread_rwlock_kernid state
pthread_cond_t read_signal;
pthread_cond_t write_signal;
int blocked_writers;
- int pshared;
- pthread_t owner;
- int rfu[2];
+ int reserved;
+ pthread_t owner;
+ int rfu[1];
+ int pshared;
} pthread_rwlock_t;
+#define PTHRW_RFU_64BIT 124 /* 31 * sizeof(uint32_t) */
+#define PTHRW_RFU_32BIT 72 /* 18 * sizeof(uint32_t) */
+
+#define _PTHREAD_RWLOCK_T
+typedef struct {
+ long sig;
+ pthread_lock_t lock;
+#if defined(__LP64__)
+ int reserv;
+ volatile uint32_t rw_seq[4];
+ pthread_t rw_owner;
+#else /* __LP64__ */
+ volatile uint32_t rw_seq[4];
+ pthread_t rw_owner;
+ int reserv;
+#endif /* __LP64__ */
+ volatile uint32_t * rw_lcntaddr;
+ volatile uint32_t * rw_seqaddr;
+ volatile uint32_t * rw_ucntaddr;
+ uint32_t rw_flags;
+ int misalign;
+#if defined(__LP64__)
+ char rfu[PTHRW_RFU_64BIT];
+#else /* __LP64__ */
+ char rfu[PTHRW_RFU_32BIT];
+#endif /* __LP64__ */
+ int pshared;
+} npthread_rwlock_t;
+
+/* flags for rw_flags */
+#define PTHRW_KERN_PROCESS_SHARED 0x10
+#define PTHRW_KERN_PROCESS_PRIVATE 0x20
+#define PTHRW_KERN_PROCESS_FLAGS_MASK 0x30
+#define _PTHREAD_RWLOCK_UPGRADE_TRY 0x10000
+
+/* New model bits on Lword */
+#define PTH_RWL_KBIT 0x01 /* users cannot acquire in user mode */
+#define PTH_RWL_EBIT 0x02 /* exclusive lock in progress */
+#define PTH_RWL_WBIT 0x04 /* write waiters pending in kernel */
+#define PTH_RWL_PBIT 0x04 /* prepost (cv) pending in kernel */
+#define PTH_RWL_YBIT 0x08 /* yielding write waiters pending in kernel */
+#define PTH_RWL_RETRYBIT 0x08 /* mutex retry wait */
+#define PTH_RWL_LBIT 0x10 /* long read in progress */
+#define PTH_RWL_MTXNONE 0x10 /* indicates the cvwait does not have mutex held */
+#define PTH_RWL_UBIT 0x20 /* upgrade request pending */
+#define PTH_RWL_MTX_WAIT 0x20 /* in cvar in mutex wait */
+#define PTH_RWL_RBIT 0x40 /* reader pending in kernel(not used) */
+#define PTH_RWL_MBIT 0x40 /* overlapping grants from kernel */
+#define PTH_RWL_TRYLKBIT 0x40 /* sets try lock attempt */
+#define PTH_RWL_IBIT 0x80 /* lock reset, held untill first succeesful unlock */
+
+/* UBIT values for mutex, cvar */
+#define PTH_RWU_SBIT 0x01
+#define PTH_RWU_BBIT 0x02
+
+#define PTHRW_RWL_INIT PTH_RWL_IBIT /* reset on the lock bits (U)*/
+#define PTHRW_RWLOCK_INIT (PTH_RWL_IBIT | PTH_RWL_RBIT) /* reset on the lock bits (U)*/
+#define PTH_RWLOCK_RESET_RBIT 0xffffffbf
+
+#define PTHRW_INC 0x100
+#define PTHRW_BIT_MASK 0x000000ff
+
+#define PTHRW_UN_BIT_MASK 0x000000bf /* remove overlap bit */
+
+
+/* New model bits on Sword */
+#define PTH_RWS_SBIT 0x01 /* kernel transition seq not set yet*/
+#define PTH_RWS_IBIT 0x02 /* Sequence is not set on return from kernel */
+
+#define PTH_RWS_CV_CBIT PTH_RWS_SBIT /* kernel has cleared all info w.r.s.t CV */
+#define PTH_RWS_CV_PBIT PTH_RWS_IBIT /* kernel has prepost/fake structs only,no waiters */
+#define PTH_RWS_CV_BITSALL (PTH_RWS_CV_CBIT | PTH_RWS_CV_PBIT)
+#define PTH_RWS_CV_MBIT PTH_RWL_MBIT /* to indicate prepost return from kernel */
+#define PTH_RWS_CV_RESET_PBIT 0xfffffffd
+
+#define PTH_RWS_WSVBIT 0x04 /* save W bit */
+#define PTH_RWS_USVBIT 0x08 /* save U bit */
+#define PTH_RWS_YSVBIT 0x10 /* save Y bit */
+#define PTHRW_RWS_INIT PTH_RWS_SBIT /* reset on the lock bits (U)*/
+#define PTHRW_RWS_SAVEMASK (PTH_RWS_WSVBIT|PTH_RWS_USVBIT|PTH_RWS_YSVBIT) /*save bits mask*/
+#define PTHRW_SW_Reset_BIT_MASK 0x000000fe /* remove S bit and get rest of the bits */
+
+#define PTHRW_COUNT_SHIFT 8
+#define PTHRW_COUNT_MASK 0xffffff00
+#define PTHRW_MAX_READERS 0xffffff00
+
+
+#define PTHREAD_MTX_TID_SWITCHING (uint64_t)-1
+
+/* new L word defns */
+#define can_rwl_readinuser(x) ((((x) & (PTH_RWL_UBIT | PTH_RWL_WBIT | PTH_RWL_KBIT)) == 0)||(((x) & PTH_RWL_LBIT) != 0))
+#define can_rwl_longreadinuser(x) (((x) & (PTH_RWL_UBIT | PTH_RWL_WBIT | PTH_RWL_KBIT | PTH_RWL_YBIT)) == 0)
+#define is_rwl_ebit_set(x) (((x) & PTH_RWL_EBIT) != 0)
+#define is_rwl_eubit_set(x) (((x) & (PTH_RWL_EBIT | PTH_RWL_UBIT)) != 0)
+#define is_rwl_wbit_set(x) (((x) & PTH_RWL_WBIT) != 0)
+#define is_rwl_lbit_set(x) (((x) & PTH_RWL_LBIT) != 0)
+#define is_rwl_ebit_clear(x) (((x) & PTH_RWL_EBIT) == 0)
+#define is_rwl_lbit_clear(x) (((x) & PTH_RWL_LBIT) == 0)
+#define is_rwl_readoverlap(x) (((x) & PTH_RWL_MBIT) != 0)
+
+/* S word checks */
+#define is_rws_setseq(x) (((x) & PTH_RWS_SBIT))
+#define is_rws_setunlockinit(x) (((x) & PTH_RWS_IBIT))
+
+/* is x lower than Y */
+static inline int is_seqlower(uint32_t x, uint32_t y) {
+ if (x < y) {
+ if ((y-x) < (PTHRW_MAX_READERS/2))
+ return(1);
+ } else {
+ if ((x-y) > (PTHRW_MAX_READERS/2))
+ return(1);
+ }
+ return(0);
+}
+
+/* is x lower than or eq Y */
+static inline int is_seqlower_eq(uint32_t x, uint32_t y) {
+ if (x==y)
+ return(1);
+ else
+ return(is_seqlower(x,y));
+}
+
+/* is x greater than Y */
+static inline int is_seqhigher(uint32_t x, uint32_t y) {
+ if (x > y) {
+ if ((x-y) < (PTHRW_MAX_READERS/2))
+ return(1);
+ } else {
+ if ((y-x) > (PTHRW_MAX_READERS/2))
+ return(1);
+ }
+ return(0);
+}
+
+static inline int diff_genseq(uint32_t x, uint32_t y) {
+ if (x == y) {
+ return(0);
+ } else if (x > y) {
+ return(x-y);
+ } else {
+ return((PTHRW_MAX_READERS - y) + x + PTHRW_INC);
+ }
+}
+
/* keep the size to 64bytes for both 64 and 32 */
#define _PTHREAD_WORKQUEUE_ATTR_T
typedef struct {
- u_int32_t sig;
-#if defined(__ppc64__) || defined(__x86_64__)
- u_int32_t resv1;
-#endif
- size_t stacksize;
- int istimeshare;
- int importance;
- int affinity;
- int queueprio;
-#if defined(__ppc64__) || defined(__x86_64__)
- unsigned int resv2[8];
-#else
- unsigned int resv2[10];
-#endif
+ uint32_t sig;
+ int queueprio;
+ int overcommit;
+ unsigned int resv2[13];
} pthread_workqueue_attr_t;
#define _PTHREAD_WORKITEM_T
void * func_arg;
struct _pthread_workqueue * workq;
unsigned int flags;
+ unsigned int fromcache; /* padding for 64bit */
} * pthread_workitem_t;
#define PTH_WQITEM_INKERNEL_QUEUE 1
#define PTH_WQITEM_APPLIED 0x80
#define PTH_WQITEM_KERN_COUNT 0x100
-#define WORKITEM_POOL_SIZE 1000
+/* try to fit these within multiple of pages (8 pages for now) */
+#define WORKITEM_POOL_SIZE 680
+/* ensure some multiple of the chunk is the pool size */
+#define WORKITEM_CHUNK_SIZE 40
+
+#define WORKITEM_STARTPOOL_SIZE WORKITEM_CHUNK_SIZE
+
TAILQ_HEAD(__pthread_workitem_pool, _pthread_workitem);
extern struct __pthread_workitem_pool __pthread_workitem_pool_head; /* head list of workitem pool */
-#define WQ_NUM_PRIO_QS 5 /* -2 to +2 */
-#define WORK_QUEUE_NORMALIZER 2 /* so all internal usages are from 0 to 4 */
-
#define _PTHREAD_WORKQUEUE_HEAD_T
typedef struct _pthread_workqueue_head {
TAILQ_HEAD(, _pthread_workqueue) wqhead;
} * pthread_workqueue_head_t;
+/* sized to be 128 bytes both in 32 and 64bit archs */
#define _PTHREAD_WORKQUEUE_T
typedef struct _pthread_workqueue {
unsigned int sig; /* Unique signature for this structure */
void (*term_callback)(struct _pthread_workqueue *,void *);
void * term_callarg;
pthread_workqueue_head_t headp;
- int suspend_count;
-#if defined(__ppc64__) || defined(__x86_64__)
- unsigned int rev2[2];
-#else
+ int overcommit;
+#if !defined(__LP64__)
unsigned int rev2[12];
#endif
} * pthread_workqueue_t;
#define PTHREAD_WORKQ_REQUEUED 0x20
#define PTHREAD_WORKQ_SUSPEND 0x40
-#define WORKQUEUE_POOL_SIZE 100
+#define WORKQUEUE_POOL_SIZE 16
TAILQ_HEAD(__pthread_workqueue_pool, _pthread_workqueue);
extern struct __pthread_workqueue_pool __pthread_workqueue_pool_head; /* head list of workqueue pool */
-#include "pthread.h"
+#include "pthread_spis.h"
-#if defined(__i386__) || defined(__ppc64__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__ppc64__) || defined(__x86_64__) || (defined(__arm__) && (defined(_ARM_ARCH_7) || !defined(_ARM_ARCH_6) || !defined(__thumb__)))
/*
* Inside libSystem, we can use r13 or %gs directly to get access to the
* thread-specific data area. The current thread is in the first slot.
inline static pthread_t __attribute__((__pure__))
_pthread_self_direct(void)
{
- pthread_t ret;
+ pthread_t ret;
+
#if defined(__i386__) || defined(__x86_64__)
- asm("mov %%gs:%P1, %0" : "=r" (ret) : "i" (offsetof(struct _pthread, tsd[0])));
+ ret = _pthread_getspecific_direct(0);
#elif defined(__ppc64__)
register const pthread_t __pthread_self asm ("r13");
ret = __pthread_self;
+#elif defined(__arm__) && defined(_ARM_ARCH_6)
+ ret = _pthread_getspecific_direct(0);
+#elif defined(__arm__) && !defined(_ARM_ARCH_6)
+ ret = _pthread_getspecific_direct(0);
#endif
return ret;
}
#define _PTHREAD_MUTEX_ATTR_SIG 0x4D545841 /* 'MTXA' */
#define _PTHREAD_MUTEX_SIG 0x4D555458 /* 'MUTX' */
#define _PTHREAD_MUTEX_SIG_init 0x32AAABA7 /* [almost] ~'MUTX' */
+#define _PTHREAD_ERRORCHECK_MUTEX_SIG_init 0x32AAABA1
+#define _PTHREAD_RECURSIVE_MUTEX_SIG_init 0x32AAABA2
+#define _PTHREAD_FIRSTFIT_MUTEX_SIG_init 0x32AAABA3
+#define _PTHREAD_MUTEX_SIG_init_MASK 0xfffffff0
+#define _PTHREAD_MUTEX_SIG_CMP 0x32AAABA0
#define _PTHREAD_COND_ATTR_SIG 0x434E4441 /* 'CNDA' */
#define _PTHREAD_COND_SIG 0x434F4E44 /* 'COND' */
#define _PTHREAD_COND_SIG_init 0x3CB0B1BB /* [almost] ~'COND' */
extern void _pthread_tsd_cleanup(pthread_t self);
+__private_extern__ void __mtx_holdlock(npthread_mutex_t *mutex, uint32_t diff, uint32_t * flagp, uint32_t ** pmtxp, uint32_t * mgenp, uint32_t * ugenp, uint64_t *tidp);
+__private_extern__ int __mtx_droplock(npthread_mutex_t *mutex, uint32_t diff, uint32_t * flagp, uint32_t ** pmtxp, uint32_t * mgenp, uint32_t * ugenp);
+__private_extern__ int __mtx_updatebits(npthread_mutex_t *mutex, uint32_t updateval, int firstfiti, int fromcond, uint64_t selfid);
+
+/* syscall interfaces */
+extern uint32_t __psynch_mutexwait(pthread_mutex_t * mutex, uint32_t mgen, uint32_t ugen, uint64_t tid, uint32_t flags);
+extern uint32_t __psynch_mutexdrop(pthread_mutex_t * mutex, uint32_t mgen, uint32_t ugen, uint64_t tid, uint32_t flags);
+
+extern uint32_t __psynch_cvbroad(pthread_cond_t * cv, uint64_t cvlsgen, uint64_t cvudgen, uint32_t flags, pthread_mutex_t * mutex, uint64_t mugen, uint64_t tid);
+extern uint32_t __psynch_cvsignal(pthread_cond_t * cv, uint64_t cvlsgen, uint32_t cvugen, int thread_port, pthread_mutex_t * mutex, uint64_t mugen, uint64_t tid, uint32_t flags);
+extern uint32_t __psynch_cvwait(pthread_cond_t * cv, uint64_t cvlsgen, uint32_t cvugen, pthread_mutex_t * mutex, uint64_t mugen, uint32_t flags, int64_t sec, uint32_t nsec);
+extern uint32_t __psynch_cvclrprepost(void * cv, uint32_t cvgen, uint32_t cvugen, uint32_t cvsgen, uint32_t prepocnt, uint32_t preposeq, uint32_t flags);
+extern uint32_t __psynch_rw_longrdlock(pthread_rwlock_t * rwlock, uint32_t lgenval, uint32_t ugenval, uint32_t rw_wc, int flags);
+extern uint32_t __psynch_rw_yieldwrlock(pthread_rwlock_t * rwlock, uint32_t lgenval, uint32_t ugenval, uint32_t rw_wc, int flags);
+extern int __psynch_rw_downgrade(pthread_rwlock_t * rwlock, uint32_t lgenval, uint32_t ugenval, uint32_t rw_wc, int flags);
+extern uint32_t __psynch_rw_upgrade(pthread_rwlock_t * rwlock, uint32_t lgenval, uint32_t ugenval, uint32_t rw_wc, int flags);
+extern uint32_t __psynch_rw_rdlock(pthread_rwlock_t * rwlock, uint32_t lgenval, uint32_t ugenval, uint32_t rw_wc, int flags);
+extern uint32_t __psynch_rw_wrlock(pthread_rwlock_t * rwlock, uint32_t lgenval, uint32_t ugenval, uint32_t rw_wc, int flags);
+extern uint32_t __psynch_rw_unlock(pthread_rwlock_t * rwlock, uint32_t lgenval, uint32_t ugenval, uint32_t rw_wc, int flags);
+extern uint32_t __psynch_rw_unlock2(pthread_rwlock_t * rwlock, uint32_t lgenval, uint32_t ugenval, uint32_t rw_wc, int flags);
+
__private_extern__ semaphore_t new_sem_from_pool(void);
__private_extern__ void restore_sem_to_pool(semaphore_t);
__private_extern__ void _pthread_atfork_queue_init(void);
int _pthread_lookup_thread(pthread_t thread, mach_port_t * port, int only_joinable);
int _pthread_join_cleanup(pthread_t thread, void ** value_ptr, int conforming);
+__private_extern__ int proc_setthreadname(void * buffer, int buffersize);
+
#endif /* _POSIX_PTHREAD_INTERNALS_H */