/* * Copyright (c) 2000-2003, 2007 Apple Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991 * All Rights Reserved * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby granted, * provided that the above copyright notice appears in all copies and * that both the copyright notice and this permission notice appear in * supporting documentation. * * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE. * * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * */ /* * MkLinux */ /* * POSIX Threads - IEEE 1003.1c */ #ifndef _POSIX_PTHREAD_INTERNALS_H #define _POSIX_PTHREAD_INTERNALS_H // suppress pthread_attr_t typedef in sys/signal.h #define _PTHREAD_ATTR_T struct _pthread_attr_t; /* forward reference */ typedef struct _pthread_attr_t pthread_attr_t; #include #include #include #include #include #include #include #include #include #ifndef __POSIX_LIB__ #define __POSIX_LIB__ #endif #include "posix_sched.h" /* For POSIX scheduling policy & parameter */ #include /* For POSIX scheduling policy & parameter */ #include "pthread_machdep.h" /* Machine-dependent definitions. */ #include "pthread_spinlock.h" /* spinlock definitions. */ TAILQ_HEAD(__pthread_list, _pthread); extern struct __pthread_list __pthread_head; /* head of list of open files */ extern pthread_lock_t _pthread_list_lock; extern size_t pthreadsize; /* * Compiled-in limits */ #define _EXTERNAL_POSIX_THREAD_KEYS_MAX 512 #define _INTERNAL_POSIX_THREAD_KEYS_MAX 256 #define _INTERNAL_POSIX_THREAD_KEYS_END 768 /* * 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 */ uint32_t detached:8, inherit:8, policy:8, freeStackOnExit:1, newstyle:1, kernalloc:1, schedset:1, wqthread:1, 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; struct _pthread *joiner; #if !defined(__LP64__) int pad1; /* for backwards compatibility */ #endif void *exit_value; semaphore_t death; /* pthread_join() uses this to wait for death's call */ mach_port_t kernel_thread; /* kernel thread this thread is bound to */ void *(*fun)(void*);/* Thread start routine */ void *arg; /* Argment for thread start routine */ int cancel_state; /* Whether thread can be cancelled */ int err_no; /* thread-local errno */ void *tsd[_EXTERNAL_POSIX_THREAD_KEYS_MAX + _INTERNAL_POSIX_THREAD_KEYS_MAX]; /* Thread specific data */ void *stackaddr; /* Base of the stack (is aligned on vm_page_size boundary */ size_t stacksize; /* Size of the stack (is a multiple of vm_page_size and >= PTHREAD_STACK_MIN) */ mach_port_t reply_port; /* Cached MiG reply port */ #if defined(__LP64__) int pad2; /* for natural alignment */ #endif void *cthread_self; /* cthread_self() if somebody calls cthread_set_self() */ /* protected by list lock */ uint32_t childrun:1, parentcheck:1, childexit:1, pad3:29; #if defined(__LP64__) int pad4; /* for natural alignment */ #endif TAILQ_ENTRY(_pthread) plist; void * freeaddr; size_t freesize; mach_port_t joiner_notify; 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 */ struct _pthread_attr_t { long sig; /* Unique signature for this structure */ pthread_lock_t lock; uint32_t detached:8, inherit:8, policy:8, freeStackOnExit:1, fastpath:1, schedset:1, reserved1:5; size_t guardsize; /* size in bytes to guard stack overflow */ int reserved2; /* Should we free the stack when we exit? */ struct sched_param param; void *stackaddr; /* Base of the stack (is aligned on vm_page_size boundary */ size_t stacksize; /* Size of the stack (is a multiple of vm_page_size and >= PTHREAD_STACK_MIN) */ boolean_t reserved3; }; /* * 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; uint32_t protocol:2, /* protocol attribute */ type:2, /* mutex type */ pshared:2, 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? */ rfu:4, lock_count:16; }; #define _PTHREAD_MTX_OPT_PSHARED 0x010 #define _PTHREAD_MTX_OPT_HOLD 0x200 #define _PTHREAD_MTX_OPT_NOHOLD 0x400 #define _PTHREAD_MTX_OPT_LASTDROP (_PTHREAD_MTX_OPT_NOHOLD | _PTHREAD_MTX_OPT_HOLD) #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 */ 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 */ struct _pthread_mutex *next, *prev; /* List of other mutexes he owns */ struct _pthread_cond *busy; /* List of condition variables using this mutex */ 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 */ #define _PTHREAD_CONDATTR_T typedef struct { long sig; /* Unique signature for this structure */ uint32_t pshared:2, /* pshared */ unsupported:30; } pthread_condattr_t; /* * Condition variables */ #define _PTHREAD_COND_T typedef struct _pthread_cond { long sig; /* Unique signature for this structure */ pthread_lock_t lock; /* Used for internal mutex on structure */ 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 */ #define _PTHREAD_ONCE_T typedef struct { long sig; /* Unique signature for this structure */ pthread_lock_t lock; /* Used for internal mutex on structure */ } pthread_once_t; #define _PTHREAD_RWLOCKATTR_T typedef struct { long sig; /* Unique signature for this structure */ int pshared; int rfu[2]; /* reserved for future use */ } pthread_rwlockattr_t; #define _PTHREAD_RWLOCK_T typedef struct { long sig; pthread_mutex_t lock; /* monitor lock */ int state; pthread_cond_t read_signal; pthread_cond_t write_signal; int blocked_writers; int reserved; pthread_t owner; int rfu[1]; int pshared; } pthread_rwlock_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_lseqaddr; volatile uint32_t * rw_wcaddr; volatile uint32_t * rw_useqaddr; uint32_t rw_flags; int misalign; #if defined(__LP64__) uint32_t rfu[31]; #else /* __LP64__ */ uint32_t rfu[18]; #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 PTHRW_EBIT 0x01 #define PTHRW_LBIT 0x02 #define PTHRW_YBIT 0x04 #define PTHRW_WBIT 0x08 #define PTHRW_UBIT 0x10 #define PTHRW_RETRYBIT 0x20 #define PTHRW_SHADOW_W 0x20 /* same as 0x20, shadow W bit for rwlock */ #define PTHRW_TRYLKBIT 0x40 #define PTHRW_RW_HUNLOCK 0x40 /* readers responsible for handling unlock */ #define PTHRW_MTX_NONE 0x80 #define PTHRW_RW_INIT 0x80 /* reset on the lock bits */ #define PTHRW_RW_SPURIOUS 0x80 /* same as 0x80, spurious rwlock unlock ret from kernel */ #define PTHRW_INC 0x100 #define PTHRW_BIT_MASK 0x000000ff #define PTHRW_UN_BIT_MASK 0x000000df /* remove shadow bit */ #define PTHRW_COUNT_SHIFT 8 #define PTHRW_COUNT_MASK 0xffffff00 #define PTHRW_MAX_READERS 0xffffff00 #define PTHREAD_MTX_TID_SWITCHING (uint64_t)-1 #define is_rw_ewubit_set(x) (((x) & (PTHRW_EBIT | PTHRW_WBIT | PTHRW_UBIT)) != 0) #define is_rw_lbit_set(x) (((x) & PTHRW_LBIT) != 0) #define is_rw_lybit_set(x) (((x) & (PTHRW_LBIT | PTHRW_YBIT)) != 0) #define is_rw_ebit_set(x) (((x) & PTHRW_EBIT) != 0) #define is_rw_ebit_clear(x) (((x) & PTHRW_EBIT) == 0) #define is_rw_uebit_set(x) (((x) & (PTHRW_EBIT | PTHRW_UBIT)) != 0) #define is_rw_ewuybit_set(x) (((x) & (PTHRW_EBIT | PTHRW_WBIT | PTHRW_UBIT | PTHRW_YBIT)) != 0) #define is_rw_ewuybit_clear(x) (((x) & (PTHRW_EBIT | PTHRW_WBIT | PTHRW_UBIT | PTHRW_YBIT)) == 0) #define is_rw_ewubit_set(x) (((x) & (PTHRW_EBIT | PTHRW_WBIT | PTHRW_UBIT)) != 0) #define is_rw_ewubit_clear(x) (((x) & (PTHRW_EBIT | PTHRW_WBIT | PTHRW_UBIT)) == 0) /* is x lower than Y */ #define is_seqlower(x, y) ((x < y) || ((x - y) > (PTHRW_MAX_READERS/2))) /* is x lower than or eq Y */ #define is_seqlower_eq(x, y) ((x <= y) || ((x - y) > (PTHRW_MAX_READERS/2))) /* is x greater than Y */ #define is_seqhigher(x, y) ((x > y) || ((y - x) > (PTHRW_MAX_READERS/2))) static inline int diff_genseq(uint32_t x, uint32_t y) { if (x > y) { return(x-y); } else { return((PTHRW_MAX_READERS - y) + x +1); } } /* keep the size to 64bytes for both 64 and 32 */ #define _PTHREAD_WORKQUEUE_ATTR_T typedef struct { uint32_t sig; int queueprio; int overcommit; unsigned int resv2[13]; } pthread_workqueue_attr_t; #define _PTHREAD_WORKITEM_T typedef struct _pthread_workitem { TAILQ_ENTRY(_pthread_workitem) item_entry; /* pthread_workitem list in prio */ void (*func)(void *); void * func_arg; struct _pthread_workqueue * workq; unsigned int flags; unsigned int gencount; } * pthread_workitem_t; #define PTH_WQITEM_INKERNEL_QUEUE 1 #define PTH_WQITEM_RUNNING 2 #define PTH_WQITEM_COMPLETED 4 #define PTH_WQITEM_REMOVED 8 #define PTH_WQITEM_BARRIER 0x10 #define PTH_WQITEM_DESTROY 0x20 #define PTH_WQITEM_NOTINLIST 0x40 #define PTH_WQITEM_APPLIED 0x80 #define PTH_WQITEM_KERN_COUNT 0x100 #define WORKITEM_POOL_SIZE 1000 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 3 /* WORKQ_HIGH/DEFAULT/LOW_PRIOQUEUE */ #define _PTHREAD_WORKQUEUE_HEAD_T typedef struct _pthread_workqueue_head { TAILQ_HEAD(, _pthread_workqueue) wqhead; struct _pthread_workqueue * next_workq; } * pthread_workqueue_head_t; #define _PTHREAD_WORKQUEUE_T typedef struct _pthread_workqueue { unsigned int sig; /* Unique signature for this structure */ pthread_lock_t lock; /* Used for internal mutex on structure */ TAILQ_ENTRY(_pthread_workqueue) wq_list; /* workqueue list in prio */ TAILQ_HEAD(, _pthread_workitem) item_listhead; /* pthread_workitem list in prio */ TAILQ_HEAD(, _pthread_workitem) item_kernhead; /* pthread_workitem list in prio */ unsigned int flags; size_t stacksize; int istimeshare; int importance; int affinity; int queueprio; int barrier_count; int kq_count; void (*term_callback)(struct _pthread_workqueue *,void *); void * term_callarg; pthread_workqueue_head_t headp; int overcommit; #if defined(__ppc64__) || defined(__x86_64__) unsigned int rev2[2]; #else unsigned int rev2[12]; #endif } * pthread_workqueue_t; #define PTHREAD_WORKQ_IN_CREATION 1 #define PTHREAD_WORKQ_IN_TERMINATE 2 #define PTHREAD_WORKQ_BARRIER_ON 4 #define PTHREAD_WORKQ_TERM_ON 8 #define PTHREAD_WORKQ_DESTROYED 0x10 #define PTHREAD_WORKQ_REQUEUED 0x20 #define PTHREAD_WORKQ_SUSPEND 0x40 #define WORKQUEUE_POOL_SIZE 100 TAILQ_HEAD(__pthread_workqueue_pool, _pthread_workqueue); extern struct __pthread_workqueue_pool __pthread_workqueue_pool_head; /* head list of workqueue pool */ #include "pthread.h" #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; #if defined(__i386__) || defined(__x86_64__) asm("mov %%gs:%P1, %0" : "=r" (ret) : "i" (offsetof(struct _pthread, tsd[0]))); #elif defined(__ppc64__) register const pthread_t __pthread_self asm ("r13"); ret = __pthread_self; #elif defined(__arm__) && defined(_ARM_ARCH_6) __asm__ ("mrc p15, 0, %0, c13, c0, 3" : "=r"(ret)); #elif defined(__arm__) && !defined(_ARM_ARCH_6) register const pthread_t __pthread_self asm ("r9"); ret = __pthread_self; #endif return ret; } #define pthread_self() _pthread_self_direct() #endif #define _PTHREAD_DEFAULT_INHERITSCHED PTHREAD_INHERIT_SCHED #define _PTHREAD_DEFAULT_PROTOCOL PTHREAD_PRIO_NONE #define _PTHREAD_DEFAULT_PRIOCEILING 0 #define _PTHREAD_DEFAULT_POLICY SCHED_OTHER #define _PTHREAD_DEFAULT_STACKSIZE 0x80000 /* 512K */ #define _PTHREAD_DEFAULT_PSHARED PTHREAD_PROCESS_PRIVATE #define _PTHREAD_NO_SIG 0x00000000 #define _PTHREAD_MUTEX_ATTR_SIG 0x4D545841 /* 'MTXA' */ #define _PTHREAD_MUTEX_SIG 0x4D555458 /* 'MUTX' */ #define _PTHREAD_MUTEX_SIG_init 0x32AAABA7 /* [almost] ~'MUTX' */ #define _PTHREAD_COND_ATTR_SIG 0x434E4441 /* 'CNDA' */ #define _PTHREAD_COND_SIG 0x434F4E44 /* 'COND' */ #define _PTHREAD_COND_SIG_init 0x3CB0B1BB /* [almost] ~'COND' */ #define _PTHREAD_ATTR_SIG 0x54484441 /* 'THDA' */ #define _PTHREAD_ONCE_SIG 0x4F4E4345 /* 'ONCE' */ #define _PTHREAD_ONCE_SIG_init 0x30B1BCBA /* [almost] ~'ONCE' */ #define _PTHREAD_SIG 0x54485244 /* 'THRD' */ #define _PTHREAD_RWLOCK_ATTR_SIG 0x52574C41 /* 'RWLA' */ #define _PTHREAD_RWLOCK_SIG 0x52574C4B /* 'RWLK' */ #define _PTHREAD_RWLOCK_SIG_init 0x2DA8B3B4 /* [almost] ~'RWLK' */ #define _PTHREAD_KERN_COND_SIG 0x12345678 /* */ #define _PTHREAD_KERN_MUTEX_SIG 0x34567812 /* */ #define _PTHREAD_KERN_RWLOCK_SIG 0x56781234 /* */ #define _PTHREAD_CREATE_PARENT 4 #define _PTHREAD_EXITED 8 // 4597450: begin #define _PTHREAD_WASCANCEL 0x10 // 4597450: end #if defined(DEBUG) #define _PTHREAD_MUTEX_OWNER_SELF pthread_self() #else #define _PTHREAD_MUTEX_OWNER_SELF (pthread_t)0x12141968 #endif #define _PTHREAD_MUTEX_OWNER_SWITCHING (pthread_t)(~0) #define _PTHREAD_CANCEL_STATE_MASK 0x01 #define _PTHREAD_CANCEL_TYPE_MASK 0x02 #define _PTHREAD_CANCEL_PENDING 0x10 /* pthread_cancel() has been called for this thread */ extern boolean_t swtch_pri(int); #ifndef PTHREAD_MACH_CALL #define PTHREAD_MACH_CALL(expr, ret) (ret) = (expr) #endif /* Prototypes. */ /* Functions defined in machine-dependent files. */ extern vm_address_t _sp(void); extern vm_address_t _adjust_sp(vm_address_t sp); extern void _pthread_setup(pthread_t th, void (*f)(pthread_t), void *sp, int suspended, int needresume); extern void _pthread_tsd_cleanup(pthread_t self); #if defined(__i386__) || defined(__x86_64__) __private_extern__ void __mtx_holdlock(npthread_mutex_t *mutex, uint32_t diff, uint32_t * flagp, uint32_t ** pmtxp, uint32_t * mgenp, uint32_t * ugenp); __private_extern__ int __mtx_droplock(npthread_mutex_t *mutex, int count, uint32_t * flagp, uint32_t ** pmtxp, uint32_t * mgenp, uint32_t * ugenp, uint32_t * notifyp); __private_extern__ int __mtx_updatebits(npthread_mutex_t *mutex, uint32_t updateval, int firstfiti, int fromcond); /* 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 int __psynch_cvbroad(pthread_cond_t * cv, uint32_t cvgen, uint32_t diffgen, pthread_mutex_t * mutex, uint32_t mgen, uint32_t ugen, uint64_t tid, uint32_t flags); extern int __psynch_cvsignal(pthread_cond_t * cv, uint32_t cvgen, uint32_t cvugen, pthread_mutex_t * mutex, uint32_t mgen, uint32_t ugen, int thread_port, uint32_t flags); extern uint32_t __psynch_cvwait(pthread_cond_t * cv, uint32_t cvgen, uint32_t cvugen, pthread_mutex_t * mutex, uint32_t mgen, uint32_t ugen, uint64_t sec, uint64_t usec); 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); #endif /* __i386__ || __x86_64__ */ __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); #endif /* _POSIX_PTHREAD_INTERNALS_H */