Repo copy libpthreads to libkse.

This introduces the WITHOUT_LIBKSE nob,
and changes WITHOUT_LIBPTHREADS to mean with neither threading libs.
Approved by:	re(kensmith)

1 files changed, 0 insertions, 1324 deletions

diff --git a/lib/libpthread/thread/thr_private.h b/lib/libpthread/thread/thr_private.h
deleted file mode 100644
index 878c0cf..0000000
--- a/lib/libpthread/thread/thr_private.h
+++ /dev/null
@@ -1,1324 +0,0 @@
-/*
- * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the author nor the names of any co-contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * 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
- * SUCH DAMAGE.
- *
- * Private thread definitions for the uthread kernel.
- *
- * $FreeBSD$
- */
-
-#ifndef _THR_PRIVATE_H
-#define _THR_PRIVATE_H
-
-/*
- * Include files.
- */
-#include <setjmp.h>
-#include <signal.h>
-#include <stdio.h>
-#include <sys/queue.h>
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/cdefs.h>
-#include <sys/kse.h>
-#include <sched.h>
-#include <ucontext.h>
-#include <unistd.h>
-#include <pthread.h>
-#include <pthread_np.h>
-
-#ifndef LIBTHREAD_DB
-#include "lock.h"
-#include "pthread_md.h"
-#endif
-
-/*
- * Unfortunately, libpthread had symbol versioning before libc.
- * But now libc has symbol versioning, we need to occupy the
- * same version namespace in order to override some libc functions.
- * So in order to avoid breaking binaries requiring symbols from
- * LIBTHREAD_1_0, we need to provide a compatible interface for
- * those symbols.
- */
-#if 0
-#define	SYM_LT10(sym)			__CONCAT(sym, _lt10)
-#define	SYM_FB10(sym)			__CONCAT(sym, _fb10)
-#define	SYM_FBP10(sym)			__CONCAT(sym, _fbp10)
-#define	WEAK_REF(sym, alias)		__weak_reference(sym, alias)
-#define	SYM_COMPAT(sym, impl, ver)	__sym_compat(sym, impl, ver)
-#define	SYM_DEFAULT(sym, impl, ver)	__sym_default(sym, impl, ver)
-
-#define	LT10_COMPAT(sym)				\
-	WEAK_REF(sym, SYM_LT10(sym));			\
-	SYM_COMPAT(sym, SYM_LT10(sym), LIBTHREAD_1_0)
-
-#define	LT10_COMPAT_DEFAULT(sym)			\
-	LT10_COMPAT(sym);				\
-	WEAK_REF(sym, SYM_FB10(sym));			\
-	SYM_DEFAULT(sym, SYM_FB10(sym), FBSD_1.0)
-
-#define	LT10_COMPAT_PRIVATE(sym)			\
-	LT10_COMPAT(sym);				\
-	WEAK_REF(sym, SYM_FBP10(sym));			\
-	SYM_DEFAULT(sym, SYM_FBP10(sym), FBSDprivate_1.0)
-#else
-#define	LT10_COMPAT_DEFAULT(sym)
-#define	LT10_COMPAT_PRIVATE(sym)
-#endif
-
-/*
- * Evaluate the storage class specifier.
- */
-#ifdef GLOBAL_PTHREAD_PRIVATE
-#define SCLASS
-#define SCLASS_PRESET(x...)	= x
-#else
-#define SCLASS			extern
-#define SCLASS_PRESET(x...)
-#endif
-
-/*
- * Kernel fatal error handler macro.
- */
-#define PANIC(string)   _thr_exit(__FILE__, __LINE__, string)
-
-
-/* Output debug messages like this: */
-#ifdef STDOUT_FILENO
-#define stdout_debug(...)	_thread_printf(STDOUT_FILENO, __VA_ARGS__)
-#endif
-#ifdef STDERR_FILENO
-#define stderr_debug(...)	_thread_printf(STDERR_FILENO, __VA_ARGS__)
-#endif
-
-#define	DBG_MUTEX	0x0001
-#define	DBG_SIG		0x0002
-#define	DBG_INFO_DUMP	0x0004
-
-#ifdef _PTHREADS_INVARIANTS
-#define THR_ASSERT(cond, msg) do {	\
-	if (!(cond))			\
-		PANIC(msg);		\
-} while (0)
-#else
-#define THR_ASSERT(cond, msg)
-#endif
-
-/*
- * State change macro without scheduling queue change:
- */
-#define THR_SET_STATE(thrd, newstate) do {				\
-	(thrd)->state = newstate;					\
-	(thrd)->fname = __FILE__;					\
-	(thrd)->lineno = __LINE__;					\
-} while (0)
-
-
-#define	TIMESPEC_ADD(dst, src, val)				\
-	do { 							\
-		(dst)->tv_sec = (src)->tv_sec + (val)->tv_sec;	\
-		(dst)->tv_nsec = (src)->tv_nsec + (val)->tv_nsec; \
-		if ((dst)->tv_nsec >= 1000000000) {		\
-			(dst)->tv_sec++;			\
-			(dst)->tv_nsec -= 1000000000;		\
-		}						\
-	} while (0)
-
-#define	TIMESPEC_SUB(dst, src, val)				\
-	do { 							\
-		(dst)->tv_sec = (src)->tv_sec - (val)->tv_sec;	\
-		(dst)->tv_nsec = (src)->tv_nsec - (val)->tv_nsec; \
-		if ((dst)->tv_nsec < 0) {			\
-			(dst)->tv_sec--;			\
-			(dst)->tv_nsec += 1000000000;		\
-		}						\
-	} while (0)
-
-/*
- * Priority queues.
- *
- * XXX It'd be nice if these were contained in uthread_priority_queue.[ch].
- */
-typedef struct pq_list {
-	TAILQ_HEAD(, pthread)	pl_head; /* list of threads at this priority */
-	TAILQ_ENTRY(pq_list)	pl_link; /* link for queue of priority lists */
-	int			pl_prio; /* the priority of this list */
-	int			pl_queued; /* is this in the priority queue */
-} pq_list_t;
-
-typedef struct pq_queue {
-	TAILQ_HEAD(, pq_list)	 pq_queue; /* queue of priority lists */
-	pq_list_t		*pq_lists; /* array of all priority lists */
-	int			 pq_size;  /* number of priority lists */
-#define	PQF_ACTIVE	0x0001
-	int			 pq_flags;
-	int			 pq_threads;
-} pq_queue_t;
-
-/*
- * Each KSEG has a scheduling queue.  For now, threads that exist in their
- * own KSEG (system scope) will get a full priority queue.  In the future
- * this can be optimized for the single thread per KSEG case.
- */
-struct sched_queue {
-	pq_queue_t		sq_runq;
-	TAILQ_HEAD(, pthread)	sq_waitq;	/* waiting in userland */
-};
-
-typedef struct kse_thr_mailbox *kse_critical_t;
-
-struct kse_group;
-
-#define	MAX_KSE_LOCKLEVEL	5	
-struct kse {
-	/* -- location and order specific items for gdb -- */
-	struct kcb		*k_kcb;
-	struct pthread		*k_curthread;	/* current thread */
-	struct kse_group	*k_kseg;	/* parent KSEG */
-	struct sched_queue	*k_schedq;	/* scheduling queue */
-	/* -- end of location and order specific items -- */
-	TAILQ_ENTRY(kse)	k_qe;		/* KSE list link entry */
-	TAILQ_ENTRY(kse)	k_kgqe;		/* KSEG's KSE list entry */
-	/*
-	 * Items that are only modified by the kse, or that otherwise
-	 * don't need to be locked when accessed
-	 */
-	struct lock		k_lock;
-	struct lockuser		k_lockusers[MAX_KSE_LOCKLEVEL];
-	int			k_locklevel;
-	stack_t			k_stack;
-	int			k_flags;
-#define	KF_STARTED			0x0001	/* kernel kse created */
-#define	KF_INITIALIZED			0x0002	/* initialized on 1st upcall */
-#define	KF_TERMINATED			0x0004	/* kse is terminated */
-#define	KF_IDLE				0x0008	/* kse is idle */
-#define	KF_SWITCH			0x0010	/* thread switch in UTS */
-	int			k_error;	/* syscall errno in critical */
-	int			k_cpu;		/* CPU ID when bound */
-	int			k_sigseqno;	/* signal buffered count */
-};
-
-#define	KSE_SET_IDLE(kse)	((kse)->k_flags |= KF_IDLE)
-#define	KSE_CLEAR_IDLE(kse)	((kse)->k_flags &= ~KF_IDLE)
-#define	KSE_IS_IDLE(kse)	(((kse)->k_flags & KF_IDLE) != 0)
-#define	KSE_SET_SWITCH(kse)	((kse)->k_flags |= KF_SWITCH)
-#define	KSE_CLEAR_SWITCH(kse)	((kse)->k_flags &= ~KF_SWITCH)
-#define	KSE_IS_SWITCH(kse)	(((kse)->k_flags & KF_SWITCH) != 0)
-
-/*
- * Each KSE group contains one or more KSEs in which threads can run.
- * At least for now, there is one scheduling queue per KSE group; KSEs
- * within the same KSE group compete for threads from the same scheduling
- * queue.  A scope system thread has one KSE in one KSE group; the group
- * does not use its scheduling queue.
- */
-struct kse_group {
-	TAILQ_HEAD(, kse)	kg_kseq;	/* list of KSEs in group */
-	TAILQ_HEAD(, pthread)	kg_threadq;	/* list of threads in group */
-	TAILQ_ENTRY(kse_group)  kg_qe;		/* link entry */
-	struct sched_queue	kg_schedq;	/* scheduling queue */
-	struct lock		kg_lock;
-	int			kg_threadcount;	/* # of assigned threads */
-	int			kg_ksecount;	/* # of assigned KSEs */
-	int			kg_idle_kses;
-	int			kg_flags;
-#define	KGF_SINGLE_THREAD		0x0001	/* scope system kse group */
-#define	KGF_SCHEDQ_INITED		0x0002	/* has an initialized schedq */
-};
-
-/*
- * Add/remove threads from a KSE's scheduling queue.
- * For now the scheduling queue is hung off the KSEG.
- */
-#define	KSEG_THRQ_ADD(kseg, thr)			\
-do {							\
-	TAILQ_INSERT_TAIL(&(kseg)->kg_threadq, thr, kle);\
-	(kseg)->kg_threadcount++;			\
-} while (0)
-
-#define	KSEG_THRQ_REMOVE(kseg, thr)			\
-do {							\
-	TAILQ_REMOVE(&(kseg)->kg_threadq, thr, kle);	\
-	(kseg)->kg_threadcount--;			\
-} while (0)
-
-
-/*
- * Lock acquire and release for KSEs.
- */
-#define	KSE_LOCK_ACQUIRE(kse, lck)					\
-do {									\
-	if ((kse)->k_locklevel < MAX_KSE_LOCKLEVEL) {			\
-		(kse)->k_locklevel++;					\
-		_lock_acquire((lck),					\
-		    &(kse)->k_lockusers[(kse)->k_locklevel - 1], 0);	\
-	}								\
-	else 								\
-		PANIC("Exceeded maximum lock level");			\
-} while (0)
-
-#define	KSE_LOCK_RELEASE(kse, lck)					\
-do {									\
-	if ((kse)->k_locklevel > 0) {					\
-		_lock_release((lck),					\
-		    &(kse)->k_lockusers[(kse)->k_locklevel - 1]);	\
-		(kse)->k_locklevel--;					\
-	}								\
-} while (0)
-
-/*
- * Lock our own KSEG.
- */
-#define	KSE_LOCK(curkse)		\
-	KSE_LOCK_ACQUIRE(curkse, &(curkse)->k_kseg->kg_lock)
-#define	KSE_UNLOCK(curkse)		\
-	KSE_LOCK_RELEASE(curkse, &(curkse)->k_kseg->kg_lock)
-
-/*
- * Lock a potentially different KSEG.
- */
-#define	KSE_SCHED_LOCK(curkse, kseg)	\
-	KSE_LOCK_ACQUIRE(curkse, &(kseg)->kg_lock)
-#define	KSE_SCHED_UNLOCK(curkse, kseg)	\
-	KSE_LOCK_RELEASE(curkse, &(kseg)->kg_lock)
-
-/*
- * Waiting queue manipulation macros (using pqe link):
- */
-#define KSE_WAITQ_REMOVE(kse, thrd) \
-do { \
-	if (((thrd)->flags & THR_FLAGS_IN_WAITQ) != 0) { \
-		TAILQ_REMOVE(&(kse)->k_schedq->sq_waitq, thrd, pqe); \
-		(thrd)->flags &= ~THR_FLAGS_IN_WAITQ; \
-	} \
-} while (0)
-#define KSE_WAITQ_INSERT(kse, thrd)	kse_waitq_insert(thrd)
-#define	KSE_WAITQ_FIRST(kse)		TAILQ_FIRST(&(kse)->k_schedq->sq_waitq)
-
-#define	KSE_WAKEUP(kse)		kse_wakeup(&(kse)->k_kcb->kcb_kmbx)
-
-/*
- * TailQ initialization values.
- */
-#define TAILQ_INITIALIZER	{ NULL, NULL }
-
-/*
- * lock initialization values.
- */
-#define	LCK_INITIALIZER		{ NULL, NULL, LCK_DEFAULT }
-
-struct pthread_mutex {
-	/*
-	 * Lock for accesses to this structure.
-	 */
-	struct lock			m_lock;
-	enum pthread_mutextype		m_type;
-	int				m_protocol;
-	TAILQ_HEAD(mutex_head, pthread)	m_queue;
-	struct pthread			*m_owner;
-	long				m_flags;
-	int				m_count;
-	int				m_refcount;
-
-	/*
-	 * Used for priority inheritence and protection.
-	 *
-	 *   m_prio       - For priority inheritence, the highest active
-	 *                  priority (threads locking the mutex inherit
-	 *                  this priority).  For priority protection, the
-	 *                  ceiling priority of this mutex.
-	 *   m_saved_prio - mutex owners inherited priority before
-	 *                  taking the mutex, restored when the owner
-	 *                  unlocks the mutex.
-	 */
-	int				m_prio;
-	int				m_saved_prio;
-
-	/*
-	 * Link for list of all mutexes a thread currently owns.
-	 */
-	TAILQ_ENTRY(pthread_mutex)	m_qe;
-};
-
-/*
- * Flags for mutexes. 
- */
-#define MUTEX_FLAGS_PRIVATE	0x01
-#define MUTEX_FLAGS_INITED	0x02
-#define MUTEX_FLAGS_BUSY	0x04
-
-/*
- * Static mutex initialization values. 
- */
-#define PTHREAD_MUTEX_STATIC_INITIALIZER				\
-	{ LCK_INITIALIZER, PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE,	\
-	TAILQ_INITIALIZER, NULL, MUTEX_FLAGS_PRIVATE, 0, 0, 0, 0,	\
-	TAILQ_INITIALIZER }
-
-struct pthread_mutex_attr {
-	enum pthread_mutextype	m_type;
-	int			m_protocol;
-	int			m_ceiling;
-	long			m_flags;
-};
-
-#define PTHREAD_MUTEXATTR_STATIC_INITIALIZER \
-	{ PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE, 0, MUTEX_FLAGS_PRIVATE }
-
-/* 
- * Condition variable definitions.
- */
-enum pthread_cond_type {
-	COND_TYPE_FAST,
-	COND_TYPE_MAX
-};
-
-struct pthread_cond {
-	/*
-	 * Lock for accesses to this structure.
-	 */
-	struct lock			c_lock;
-	enum pthread_cond_type		c_type;
-	TAILQ_HEAD(cond_head, pthread)	c_queue;
-	struct pthread_mutex		*c_mutex;
-	long				c_flags;
-	long				c_seqno;
-};
-
-struct pthread_cond_attr {
-	enum pthread_cond_type	c_type;
-	long			c_flags;
-};
-
-struct pthread_barrier {
-	pthread_mutex_t	b_lock;
-	pthread_cond_t	b_cond;
-	int		b_count;
-	int		b_waiters;
-	int		b_generation;
-};
-
-struct pthread_barrierattr {
-	int		pshared;
-};
-
-struct pthread_spinlock {
-	volatile int	s_lock;
-	pthread_t	s_owner;
-};
-
-/*
- * Flags for condition variables.
- */
-#define COND_FLAGS_PRIVATE	0x01
-#define COND_FLAGS_INITED	0x02
-#define COND_FLAGS_BUSY		0x04
-
-/*
- * Static cond initialization values. 
- */
-#define PTHREAD_COND_STATIC_INITIALIZER				\
-	{ LCK_INITIALIZER, COND_TYPE_FAST, TAILQ_INITIALIZER,	\
-	NULL, NULL, 0, 0 }
-
-/*
- * Cleanup definitions.
- */
-struct pthread_cleanup {
-	struct pthread_cleanup	*next;
-	void			(*routine) (void *);
-	void			*routine_arg;
-	int			onstack;
-};
-
-#define	THR_CLEANUP_PUSH(td, func, arg) {		\
-	struct pthread_cleanup __cup;			\
-							\
-	__cup.routine = func;				\
-	__cup.routine_arg = arg;			\
-	__cup.onstack = 1;				\
-	__cup.next = (td)->cleanup;			\
-	(td)->cleanup = &__cup;
-
-#define	THR_CLEANUP_POP(td, exec)			\
-	(td)->cleanup = __cup.next;			\
-	if ((exec) != 0)				\
-		__cup.routine(__cup.routine_arg);	\
-}
-
-struct pthread_atfork {
-	TAILQ_ENTRY(pthread_atfork) qe;
-	void (*prepare)(void);
-	void (*parent)(void);
-	void (*child)(void);
-};
-
-struct pthread_attr {
-	int	sched_policy;
-	int	sched_inherit;
-	int	sched_interval;
-	int	prio;
-	int	suspend;
-#define	THR_STACK_USER		0x100	/* 0xFF reserved for <pthread.h> */
-#define	THR_SIGNAL_THREAD	0x200	/* This is a signal thread */
-	int	flags;
-	void	*arg_attr;
-	void	(*cleanup_attr) (void *);
-	void	*stackaddr_attr;
-	size_t	stacksize_attr;
-	size_t	guardsize_attr;
-};
-
-/*
- * Thread creation state attributes.
- */
-#define THR_CREATE_RUNNING		0
-#define THR_CREATE_SUSPENDED		1
-
-/*
- * Miscellaneous definitions.
- */
-#define THR_STACK32_DEFAULT			(1 * 1024 * 1024)
-#define THR_STACK64_DEFAULT			(2 * 1024 * 1024)
-
-/*
- * Maximum size of initial thread's stack.  This perhaps deserves to be larger
- * than the stacks of other threads, since many applications are likely to run
- * almost entirely on this stack.
- */
-#define THR_STACK32_INITIAL			(2 * 1024 * 1024)
-#define THR_STACK64_INITIAL			(4 * 1024 * 1024)
-
-/*
- * Define the different priority ranges.  All applications have thread
- * priorities constrained within 0-31.  The threads library raises the
- * priority when delivering signals in order to ensure that signal
- * delivery happens (from the POSIX spec) "as soon as possible".
- * In the future, the threads library will also be able to map specific
- * threads into real-time (cooperating) processes or kernel threads.
- * The RT and SIGNAL priorities will be used internally and added to
- * thread base priorities so that the scheduling queue can handle both
- * normal and RT priority threads with and without signal handling.
- *
- * The approach taken is that, within each class, signal delivery
- * always has priority over thread execution.
- */
-#define THR_DEFAULT_PRIORITY			15
-#define THR_MIN_PRIORITY			0
-#define THR_MAX_PRIORITY			31	/* 0x1F */
-#define THR_SIGNAL_PRIORITY			32	/* 0x20 */
-#define THR_RT_PRIORITY				64	/* 0x40 */
-#define THR_FIRST_PRIORITY			THR_MIN_PRIORITY
-#define THR_LAST_PRIORITY	\
-	(THR_MAX_PRIORITY + THR_SIGNAL_PRIORITY + THR_RT_PRIORITY)
-#define THR_BASE_PRIORITY(prio)	((prio) & THR_MAX_PRIORITY)
-
-/*
- * Clock resolution in microseconds.
- */
-#define CLOCK_RES_USEC				10000
-
-/*
- * Time slice period in microseconds.
- */
-#define TIMESLICE_USEC				20000
-
-/*
- * XXX - Define a thread-safe macro to get the current time of day
- *       which is updated at regular intervals by something.
- *
- * For now, we just make the system call to get the time.
- */
-#define	KSE_GET_TOD(curkse, tsp) \
-do {							\
-	*tsp = (curkse)->k_kcb->kcb_kmbx.km_timeofday;	\
-	if ((tsp)->tv_sec == 0)				\
-		clock_gettime(CLOCK_REALTIME, tsp);	\
-} while (0)
-
-struct pthread_rwlockattr {
-	int		pshared;
-};
-
-struct pthread_rwlock {
-	pthread_mutex_t	lock;	/* monitor lock */
-	pthread_cond_t	read_signal;
-	pthread_cond_t	write_signal;
-	int		state;	/* 0 = idle  >0 = # of readers  -1 = writer */
-	int		blocked_writers;
-};
-
-/*
- * Thread states.
- */
-enum pthread_state {
-	PS_RUNNING,
-	PS_LOCKWAIT,
-	PS_MUTEX_WAIT,
-	PS_COND_WAIT,
-	PS_SLEEP_WAIT,
-	PS_SIGSUSPEND,
-	PS_SIGWAIT,
-	PS_JOIN,
-	PS_SUSPENDED,
-	PS_DEAD,
-	PS_DEADLOCK,
-	PS_STATE_MAX
-};
-
-struct sigwait_data {
-	sigset_t	*waitset;
-	siginfo_t	*siginfo;	/* used to save siginfo for sigwaitinfo() */
-};
-
-union pthread_wait_data {
-	pthread_mutex_t	mutex;
-	pthread_cond_t	cond;
-	struct lock	*lock;
-	struct sigwait_data *sigwait;
-};
-
-/*
- * Define a continuation routine that can be used to perform a
- * transfer of control:
- */
-typedef void	(*thread_continuation_t) (void *);
-
-/*
- * This stores a thread's state prior to running a signal handler.
- * It is used when a signal is delivered to a thread blocked in
- * userland.  If the signal handler returns normally, the thread's
- * state is restored from here.
- */
-struct pthread_sigframe {
-	int			psf_valid;
-	int			psf_flags;
-	int			psf_cancelflags;
-	int			psf_interrupted;
-	int			psf_timeout;
-	int			psf_signo;
-	enum pthread_state	psf_state;
-	union pthread_wait_data psf_wait_data;
-	struct timespec		psf_wakeup_time;
-	sigset_t		psf_sigset;
-	sigset_t		psf_sigmask;
-	int			psf_seqno;
-	thread_continuation_t	psf_continuation;
-};
-
-struct join_status {
-	struct pthread	*thread;
-	void		*ret;
-	int		error;
-};
-
-struct pthread_specific_elem {
-	const void	*data;
-	int		seqno;
-};
-
-struct pthread_key {
-	volatile int	allocated;
-	volatile int	count;
-	int		seqno;
-	void            (*destructor) (void *);
-};
-
-#define	MAX_THR_LOCKLEVEL	5	
-/*
- * Thread structure.
- */
-struct pthread {
-	/* Thread control block */
-	struct tcb		*tcb;
-
-	/*
-	 * Magic value to help recognize a valid thread structure
-	 * from an invalid one:
-	 */
-#define	THR_MAGIC		((u_int32_t) 0xd09ba115)
-	u_int32_t		magic;
-	char			*name;
-	u_int64_t		uniqueid; /* for gdb */
-
-	/* Queue entry for list of all threads: */
-	TAILQ_ENTRY(pthread)	tle;	/* link for all threads in process */
-	TAILQ_ENTRY(pthread)	kle;	/* link for all threads in KSE/KSEG */
-
-	/* Queue entry for GC lists: */
-	TAILQ_ENTRY(pthread)	gcle;
-
-	/* Hash queue entry */
-	LIST_ENTRY(pthread)	hle;
-
-	/*
-	 * Lock for accesses to this thread structure.
-	 */
-	struct lock		lock;
-	struct lockuser		lockusers[MAX_THR_LOCKLEVEL];
-	int			locklevel;
-	kse_critical_t		critical[MAX_KSE_LOCKLEVEL];
-	struct kse		*kse;
-	struct kse_group	*kseg;
-
-	/*
-	 * Thread start routine, argument, stack pointer and thread
-	 * attributes.
-	 */
-	void			*(*start_routine)(void *);
-	void			*arg;
-	struct pthread_attr	attr;
-
-	int			active;		/* thread running */
-	int			blocked;	/* thread blocked in kernel */
-	int			need_switchout;
-
-	/*
-	 * Used for tracking delivery of signal handlers.
-	 */
-	siginfo_t		*siginfo;
-	thread_continuation_t	sigbackout;
-
- 	/*
-	 * Cancelability flags - the lower 2 bits are used by cancel
-	 * definitions in pthread.h
-	 */
-#define THR_AT_CANCEL_POINT		0x0004
-#define THR_CANCELLING			0x0008
-#define THR_CANCEL_NEEDED		0x0010
-	int			cancelflags;
-
-	thread_continuation_t	continuation;
-
-	/*
-	 * The thread's base and pending signal masks.  The active
-	 * signal mask is stored in the thread's context (in mailbox).
-	 */
-	sigset_t		sigmask;
-	sigset_t		sigpend;
-	sigset_t		*oldsigmask;
-	volatile int		check_pending;
-	int			refcount;
-
-	/* Thread state: */
-	enum pthread_state	state;
-	volatile int		lock_switch;
-
-	/*
-	 * Number of microseconds accumulated by this thread when
-	 * time slicing is active.
-	 */
-	long			slice_usec;
-
-	/*
-	 * Time to wake up thread. This is used for sleeping threads and
-	 * for any operation which may time out (such as select).
-	 */
-	struct timespec		wakeup_time;
-
-	/* TRUE if operation has timed out. */
-	int			timeout;
-
-	/*
-	 * Error variable used instead of errno. The function __error()
-	 * returns a pointer to this. 
-	 */
-	int			error;
-
-	/*
-	 * The joiner is the thread that is joining to this thread.  The
-	 * join status keeps track of a join operation to another thread.
-	 */
-	struct pthread		*joiner;
-	struct join_status	join_status;
-
-	/*
-	 * The current thread can belong to only one scheduling queue at
-	 * a time (ready or waiting queue).  It can also belong to:
-	 *
-	 *   o A queue of threads waiting for a mutex
-	 *   o A queue of threads waiting for a condition variable
-	 *
-	 * It is possible for a thread to belong to more than one of the
-	 * above queues if it is handling a signal.  A thread may only
-	 * enter a mutex or condition variable queue when it is not
-	 * being called from a signal handler.  If a thread is a member
-	 * of one of these queues when a signal handler is invoked, it
-	 * must be removed from the queue before invoking the handler
-	 * and then added back to the queue after return from the handler.
-	 *
-	 * Use pqe for the scheduling queue link (both ready and waiting),
-	 * sqe for synchronization (mutex, condition variable, and join)
-	 * queue links, and qe for all other links.
-	 */
-	TAILQ_ENTRY(pthread)	pqe;	/* priority, wait queues link */
-	TAILQ_ENTRY(pthread)	sqe;	/* synchronization queue link */
-
-	/* Wait data. */
-	union pthread_wait_data data;
-
-	/*
-	 * Set to TRUE if a blocking operation was
-	 * interrupted by a signal:
-	 */
-	int			interrupted;
-
-	/*
-	 * Set to non-zero when this thread has entered a critical
-	 * region.  We allow for recursive entries into critical regions.
-	 */
-	int			critical_count;
-
-	/*
-	 * Set to TRUE if this thread should yield after leaving a
-	 * critical region to check for signals, messages, etc.
-	 */
-	int			critical_yield;
-
-	int			sflags;
-#define THR_FLAGS_IN_SYNCQ	0x0001
-
-	/* Miscellaneous flags; only set with scheduling lock held. */
-	int			flags;
-#define THR_FLAGS_PRIVATE	0x0001
-#define THR_FLAGS_IN_WAITQ	0x0002	/* in waiting queue using pqe link */
-#define THR_FLAGS_IN_RUNQ	0x0004	/* in run queue using pqe link */
-#define	THR_FLAGS_EXITING	0x0008	/* thread is exiting */
-#define	THR_FLAGS_SUSPENDED	0x0010	/* thread is suspended */
-
-	/* Thread list flags; only set with thread list lock held. */
-#define	TLFLAGS_GC_SAFE		0x0001	/* thread safe for cleaning */
-#define	TLFLAGS_IN_TDLIST	0x0002	/* thread in all thread list */
-#define	TLFLAGS_IN_GCLIST	0x0004	/* thread in gc list */
-	int			tlflags;
-
-	/*
-	 * Base priority is the user setable and retrievable priority
-	 * of the thread.  It is only affected by explicit calls to
-	 * set thread priority and upon thread creation via a thread
-	 * attribute or default priority.
-	 */
-	char			base_priority;
-
-	/*
-	 * Inherited priority is the priority a thread inherits by
-	 * taking a priority inheritence or protection mutex.  It
-	 * is not affected by base priority changes.  Inherited
-	 * priority defaults to and remains 0 until a mutex is taken
-	 * that is being waited on by any other thread whose priority
-	 * is non-zero.
-	 */
-	char			inherited_priority;
-
-	/*
-	 * Active priority is always the maximum of the threads base
-	 * priority and inherited priority.  When there is a change
-	 * in either the base or inherited priority, the active
-	 * priority must be recalculated.
-	 */
-	char			active_priority;
-
-	/* Number of priority ceiling or protection mutexes owned. */
-	int			priority_mutex_count;
-
-	/* Number rwlocks rdlocks held. */
-	int			rdlock_count;
-
-	/*
-	 * Queue of currently owned mutexes.
-	 */
-	TAILQ_HEAD(, pthread_mutex)	mutexq;
-
-	void				*ret;
-	struct pthread_specific_elem	*specific;
-	int				specific_data_count;
-
-	/* Alternative stack for sigaltstack() */
-	stack_t				sigstk;
-
-	/*
-	 * Current locks bitmap for rtld.
-	 */
-	int	rtld_bits;
-
-	/* Cleanup handlers Link List */
-	struct pthread_cleanup *cleanup;
-	char			*fname;	/* Ptr to source file name  */
-	int			lineno;	/* Source line number.      */
-};
-
-/*
- * Critical regions can also be detected by looking at the threads
- * current lock level.  Ensure these macros increment and decrement
- * the lock levels such that locks can not be held with a lock level
- * of 0.
- */
-#define	THR_IN_CRITICAL(thrd)					\
-	(((thrd)->locklevel > 0) ||				\
-	((thrd)->critical_count > 0))
-
-#define	THR_YIELD_CHECK(thrd)					\
-do {								\
-	if (!THR_IN_CRITICAL(thrd)) {				\
-		if (__predict_false(_libkse_debug))		\
-			_thr_debug_check_yield(thrd);		\
-		if ((thrd)->critical_yield != 0)		\
-			_thr_sched_switch(thrd);		\
-		if ((thrd)->check_pending != 0) 		\
-			_thr_sig_check_pending(thrd);		\
-	}							\
-} while (0)
-
-#define	THR_LOCK_ACQUIRE(thrd, lck)				\
-do {								\
-	if ((thrd)->locklevel < MAX_THR_LOCKLEVEL) {		\
-		THR_DEACTIVATE_LAST_LOCK(thrd);			\
-		(thrd)->locklevel++;				\
-		_lock_acquire((lck),				\
-		    &(thrd)->lockusers[(thrd)->locklevel - 1],	\
-		    (thrd)->active_priority);			\
-	} else 							\
-		PANIC("Exceeded maximum lock level");		\
-} while (0)
-
-#define	THR_LOCK_RELEASE(thrd, lck)				\
-do {								\
-	if ((thrd)->locklevel > 0) {				\
-		_lock_release((lck),				\
-		    &(thrd)->lockusers[(thrd)->locklevel - 1]);	\
-		(thrd)->locklevel--;				\
-		THR_ACTIVATE_LAST_LOCK(thrd);			\
-		if ((thrd)->locklevel == 0)			\
-			THR_YIELD_CHECK(thrd);			\
-	}							\
-} while (0)
-
-#define THR_ACTIVATE_LAST_LOCK(thrd)					\
-do {									\
-	if ((thrd)->locklevel > 0)					\
-		_lockuser_setactive(					\
-		    &(thrd)->lockusers[(thrd)->locklevel - 1], 1);	\
-} while (0)
-
-#define	THR_DEACTIVATE_LAST_LOCK(thrd)					\
-do {									\
-	if ((thrd)->locklevel > 0)					\
-		_lockuser_setactive(					\
-		    &(thrd)->lockusers[(thrd)->locklevel - 1], 0);	\
-} while (0)
-
-/*
- * For now, threads will have their own lock separate from their
- * KSE scheduling lock.
- */
-#define	THR_LOCK(thr)			THR_LOCK_ACQUIRE(thr, &(thr)->lock)
-#define	THR_UNLOCK(thr)			THR_LOCK_RELEASE(thr, &(thr)->lock)
-#define	THR_THREAD_LOCK(curthrd, thr)	THR_LOCK_ACQUIRE(curthrd, &(thr)->lock)
-#define	THR_THREAD_UNLOCK(curthrd, thr)	THR_LOCK_RELEASE(curthrd, &(thr)->lock)
-
-/*
- * Priority queue manipulation macros (using pqe link).  We use
- * the thread's kseg link instead of the kse link because a thread
- * does not (currently) have a statically assigned kse.
- */
-#define THR_RUNQ_INSERT_HEAD(thrd)	\
-	_pq_insert_head(&(thrd)->kseg->kg_schedq.sq_runq, thrd)
-#define THR_RUNQ_INSERT_TAIL(thrd)	\
-	_pq_insert_tail(&(thrd)->kseg->kg_schedq.sq_runq, thrd)
-#define THR_RUNQ_REMOVE(thrd)		\
-	_pq_remove(&(thrd)->kseg->kg_schedq.sq_runq, thrd)
-
-/*
- * Macros to insert/remove threads to the all thread list and
- * the gc list.
- */
-#define	THR_LIST_ADD(thrd) do {					\
-	if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) == 0) {	\
-		TAILQ_INSERT_HEAD(&_thread_list, thrd, tle);	\
-		_thr_hash_add(thrd);				\
-		(thrd)->tlflags |= TLFLAGS_IN_TDLIST;		\
-	}							\
-} while (0)
-#define	THR_LIST_REMOVE(thrd) do {				\
-	if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) != 0) {	\
-		TAILQ_REMOVE(&_thread_list, thrd, tle);		\
-		_thr_hash_remove(thrd);				\
-		(thrd)->tlflags &= ~TLFLAGS_IN_TDLIST;		\
-	}							\
-} while (0)
-#define	THR_GCLIST_ADD(thrd) do {				\
-	if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) == 0) {	\
-		TAILQ_INSERT_HEAD(&_thread_gc_list, thrd, gcle);\
-		(thrd)->tlflags |= TLFLAGS_IN_GCLIST;		\
-		_gc_count++;					\
-	}							\
-} while (0)
-#define	THR_GCLIST_REMOVE(thrd) do {				\
-	if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) != 0) {	\
-		TAILQ_REMOVE(&_thread_gc_list, thrd, gcle);	\
-		(thrd)->tlflags &= ~TLFLAGS_IN_GCLIST;		\
-		_gc_count--;					\
-	}							\
-} while (0)
-
-#define GC_NEEDED()	(atomic_load_acq_int(&_gc_count) >= 5)
-
-/*
- * Locking the scheduling queue for another thread uses that thread's
- * KSEG lock.
- */
-#define	THR_SCHED_LOCK(curthr, thr) do {		\
-	(curthr)->critical[(curthr)->locklevel] = _kse_critical_enter(); \
-	(curthr)->locklevel++;				\
-	KSE_SCHED_LOCK((curthr)->kse, (thr)->kseg);	\
-} while (0)
-
-#define	THR_SCHED_UNLOCK(curthr, thr) do {		\
-	KSE_SCHED_UNLOCK((curthr)->kse, (thr)->kseg);	\
-	(curthr)->locklevel--;				\
-	_kse_critical_leave((curthr)->critical[(curthr)->locklevel]); \
-} while (0)
-
-/* Take the scheduling lock with the intent to call the scheduler. */
-#define	THR_LOCK_SWITCH(curthr) do {			\
-	(void)_kse_critical_enter();			\
-	KSE_SCHED_LOCK((curthr)->kse, (curthr)->kseg);	\
-} while (0)
-#define	THR_UNLOCK_SWITCH(curthr) do {			\
-	KSE_SCHED_UNLOCK((curthr)->kse, (curthr)->kseg);\
-} while (0)
-
-#define	THR_CRITICAL_ENTER(thr)		(thr)->critical_count++
-#define	THR_CRITICAL_LEAVE(thr)	do {		\
-	(thr)->critical_count--;		\
-	if (((thr)->critical_yield != 0) &&	\
-	    ((thr)->critical_count == 0)) {	\
-		(thr)->critical_yield = 0;	\
-		_thr_sched_switch(thr);		\
-	}					\
-} while (0)
-
-#define	THR_IS_ACTIVE(thrd) \
-	((thrd)->kse != NULL) && ((thrd)->kse->k_curthread == (thrd))
-
-#define	THR_IN_SYNCQ(thrd)	(((thrd)->sflags & THR_FLAGS_IN_SYNCQ) != 0)
-
-#define	THR_IS_SUSPENDED(thrd) \
-	(((thrd)->state == PS_SUSPENDED) || \
-	(((thrd)->flags & THR_FLAGS_SUSPENDED) != 0))
-#define	THR_IS_EXITING(thrd)	(((thrd)->flags & THR_FLAGS_EXITING) != 0)
-#define DBG_CAN_RUN(thrd) (((thrd)->tcb->tcb_tmbx.tm_dflags & \
-	TMDF_SUSPEND) == 0)
-
-extern int __isthreaded;
-
-static inline int
-_kse_isthreaded(void)
-{
-	return (__isthreaded != 0);
-}
-
-/*
- * Global variables for the pthread kernel.
- */
-
-SCLASS void		*_usrstack	SCLASS_PRESET(NULL);
-SCLASS struct kse	*_kse_initial	SCLASS_PRESET(NULL);
-SCLASS struct pthread	*_thr_initial	SCLASS_PRESET(NULL);
-/* For debugger */
-SCLASS int		_libkse_debug		SCLASS_PRESET(0);
-SCLASS int		_thread_activated	SCLASS_PRESET(0);
-SCLASS int		_thread_scope_system	SCLASS_PRESET(0);
-
-/* List of all threads: */
-SCLASS TAILQ_HEAD(, pthread)	_thread_list
-    SCLASS_PRESET(TAILQ_HEAD_INITIALIZER(_thread_list));
-
-/* List of threads needing GC: */
-SCLASS TAILQ_HEAD(, pthread)	_thread_gc_list
-    SCLASS_PRESET(TAILQ_HEAD_INITIALIZER(_thread_gc_list));
-
-SCLASS int	_thread_active_threads  SCLASS_PRESET(1);
-
-SCLASS TAILQ_HEAD(atfork_head, pthread_atfork) _thr_atfork_list;
-SCLASS pthread_mutex_t		_thr_atfork_mutex;
-
-/* Default thread attributes: */
-SCLASS struct pthread_attr _pthread_attr_default
-    SCLASS_PRESET({
-	SCHED_RR, 0, TIMESLICE_USEC, THR_DEFAULT_PRIORITY,
-	THR_CREATE_RUNNING,	PTHREAD_CREATE_JOINABLE, NULL,
-	NULL, NULL, /* stacksize */0, /* guardsize */0
-    });
-
-/* Default mutex attributes: */
-SCLASS struct pthread_mutex_attr _pthread_mutexattr_default
-    SCLASS_PRESET({PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE, 0, 0 });
-
-/* Default condition variable attributes: */
-SCLASS struct pthread_cond_attr _pthread_condattr_default
-    SCLASS_PRESET({COND_TYPE_FAST, 0});
-
-/* Clock resolution in usec.	*/
-SCLASS int		_clock_res_usec		SCLASS_PRESET(CLOCK_RES_USEC);
-
-/* Array of signal actions for this process: */
-SCLASS struct sigaction	_thread_sigact[_SIG_MAXSIG];
-
-/*
- * Lock for above count of dummy handlers and for the process signal
- * mask and pending signal sets.
- */
-SCLASS struct lock	_thread_signal_lock;
-
-/* Pending signals and mask for this process: */
-SCLASS sigset_t		_thr_proc_sigpending;
-SCLASS siginfo_t	_thr_proc_siginfo[_SIG_MAXSIG];
-
-SCLASS pid_t		_thr_pid		SCLASS_PRESET(0);
-
-/* Garbage collector lock. */
-SCLASS struct lock	_gc_lock;
-SCLASS int		_gc_check		SCLASS_PRESET(0);
-SCLASS int		_gc_count		SCLASS_PRESET(0);
-
-SCLASS struct lock	_mutex_static_lock;
-SCLASS struct lock	_rwlock_static_lock;
-SCLASS struct lock	_keytable_lock;
-SCLASS struct lock	_thread_list_lock;
-SCLASS int		_thr_guard_default;
-SCLASS int		_thr_stack_default;
-SCLASS int		_thr_stack_initial;
-SCLASS int		_thr_page_size;
-SCLASS pthread_t	_thr_sig_daemon;
-SCLASS int		_thr_debug_flags	SCLASS_PRESET(0);
-
-/* Undefine the storage class and preset specifiers: */
-#undef  SCLASS
-#undef	SCLASS_PRESET
-
-
-/*
- * Function prototype definitions.
- */
-__BEGIN_DECLS
-int	_cond_reinit(pthread_cond_t *);
-struct kse *_kse_alloc(struct pthread *, int sys_scope);
-kse_critical_t _kse_critical_enter(void);
-void	_kse_critical_leave(kse_critical_t);
-int	_kse_in_critical(void);
-void	_kse_free(struct pthread *, struct kse *);
-void	_kse_init(void);
-struct kse_group *_kseg_alloc(struct pthread *);
-void	_kse_lock_wait(struct lock *, struct lockuser *lu);
-void	_kse_lock_wakeup(struct lock *, struct lockuser *lu);
-void	_kse_single_thread(struct pthread *);
-int	_kse_setthreaded(int);
-void	_kseg_free(struct kse_group *);
-int	_mutex_cv_lock(pthread_mutex_t *);
-int	_mutex_cv_unlock(pthread_mutex_t *);
-void	_mutex_notify_priochange(struct pthread *, struct pthread *, int);
-int	_mutex_reinit(struct pthread_mutex *);
-void	_mutex_unlock_private(struct pthread *);
-void	_libpthread_init(struct pthread *);
-int	_pq_alloc(struct pq_queue *, int, int);
-void	_pq_free(struct pq_queue *);
-int	_pq_init(struct pq_queue *);
-void	_pq_remove(struct pq_queue *pq, struct pthread *);
-void	_pq_insert_head(struct pq_queue *pq, struct pthread *);
-void	_pq_insert_tail(struct pq_queue *pq, struct pthread *);
-struct pthread *_pq_first(struct pq_queue *pq);
-struct pthread *_pq_first_debug(struct pq_queue *pq);
-void	*_pthread_getspecific(pthread_key_t);
-int	_pthread_key_create(pthread_key_t *, void (*) (void *));
-int	_pthread_key_delete(pthread_key_t);
-int	_pthread_mutex_destroy(pthread_mutex_t *);
-int	_pthread_mutex_init(pthread_mutex_t *, const pthread_mutexattr_t *);
-int	_pthread_mutex_lock(pthread_mutex_t *);
-int	_pthread_mutex_trylock(pthread_mutex_t *);
-int	_pthread_mutex_unlock(pthread_mutex_t *);
-int	_pthread_mutexattr_init(pthread_mutexattr_t *);
-int	_pthread_mutexattr_destroy(pthread_mutexattr_t *);
-int	_pthread_mutexattr_settype(pthread_mutexattr_t *, int);
-int	_pthread_once(pthread_once_t *, void (*) (void));
-int	_pthread_rwlock_init(pthread_rwlock_t *, const pthread_rwlockattr_t *);
-int	_pthread_rwlock_destroy (pthread_rwlock_t *);
-struct pthread *_pthread_self(void);
-int	_pthread_setspecific(pthread_key_t, const void *);
-void	_pthread_yield(void);
-void	_pthread_cleanup_push(void (*routine) (void *), void *routine_arg);
-void	_pthread_cleanup_pop(int execute);
-struct pthread *_thr_alloc(struct pthread *);
-void	_thr_exit(char *, int, char *);
-void	_thr_exit_cleanup(void);
-void	_thr_lock_wait(struct lock *lock, struct lockuser *lu);
-void	_thr_lock_wakeup(struct lock *lock, struct lockuser *lu);
-void	_thr_mutex_reinit(pthread_mutex_t *);
-int	_thr_ref_add(struct pthread *, struct pthread *, int);
-void	_thr_ref_delete(struct pthread *, struct pthread *);
-void	_thr_rtld_init(void);
-void	_thr_rtld_fini(void);
-int	_thr_schedule_add(struct pthread *, struct pthread *);
-void	_thr_schedule_remove(struct pthread *, struct pthread *);
-void	_thr_setrunnable(struct pthread *curthread, struct pthread *thread);
-struct kse_mailbox *_thr_setrunnable_unlocked(struct pthread *thread);
-struct kse_mailbox *_thr_sig_add(struct pthread *, int, siginfo_t *);
-void	_thr_sig_dispatch(struct kse *, int, siginfo_t *);
-int	_thr_stack_alloc(struct pthread_attr *);
-void	_thr_stack_free(struct pthread_attr *);
-void    _thr_exit_cleanup(void);
-void	_thr_free(struct pthread *, struct pthread *);
-void	_thr_gc(struct pthread *);
-void    _thr_panic_exit(char *, int, char *);
-void    _thread_cleanupspecific(void);
-void    _thread_dump_info(void);
-void	_thread_printf(int, const char *, ...);
-void	_thr_sched_switch(struct pthread *);
-void	_thr_sched_switch_unlocked(struct pthread *);
-void    _thr_set_timeout(const struct timespec *);
-void	_thr_seterrno(struct pthread *, int);
-void    _thr_sig_handler(int, siginfo_t *, ucontext_t *);
-void    _thr_sig_check_pending(struct pthread *);
-void	_thr_sig_rundown(struct pthread *, ucontext_t *);
-void	_thr_sig_send(struct pthread *pthread, int sig);
-void	_thr_sigframe_restore(struct pthread *thread, struct pthread_sigframe *psf);
-void	_thr_spinlock_init(void);
-void	_thr_cancel_enter(struct pthread *);
-void	_thr_cancel_leave(struct pthread *, int);
-int	_thr_setconcurrency(int new_level);
-int	_thr_setmaxconcurrency(void);
-void	_thr_critical_enter(struct pthread *);
-void	_thr_critical_leave(struct pthread *);
-int	_thr_start_sig_daemon(void);
-int	_thr_getprocsig(int sig, siginfo_t *siginfo);
-int	_thr_getprocsig_unlocked(int sig, siginfo_t *siginfo);
-void	_thr_signal_init(void);
-void	_thr_signal_deinit(void);
-void	_thr_hash_add(struct pthread *);
-void	_thr_hash_remove(struct pthread *);
-struct pthread *_thr_hash_find(struct pthread *);
-void	_thr_finish_cancellation(void *arg);
-int	_thr_sigonstack(void *sp);
-void	_thr_debug_check_yield(struct pthread *);
-
-/*
- * Aliases for _pthread functions. Should be called instead of
- * originals if PLT replocation is unwanted at runtme.
- */
-int	_thr_cond_broadcast(pthread_cond_t *);
-int	_thr_cond_signal(pthread_cond_t *);
-int	_thr_cond_wait(pthread_cond_t *, pthread_mutex_t *);
-int	_thr_mutex_lock(pthread_mutex_t *);
-int	_thr_mutex_unlock(pthread_mutex_t *);
-int	_thr_rwlock_rdlock (pthread_rwlock_t *);
-int	_thr_rwlock_wrlock (pthread_rwlock_t *);
-int	_thr_rwlock_unlock (pthread_rwlock_t *);
-
-/* #include <sys/aio.h> */
-#ifdef _SYS_AIO_H_
-int	__sys_aio_suspend(const struct aiocb * const[], int, const struct timespec *);
-#endif
-
-/* #include <fcntl.h> */
-#ifdef  _SYS_FCNTL_H_
-int     __sys_fcntl(int, int, ...);
-int     __sys_open(const char *, int, ...);
-#endif
-
-/* #include <sys/ioctl.h> */
-#ifdef _SYS_IOCTL_H_
-int	__sys_ioctl(int, unsigned long, ...);
-#endif
-
-/* #inclde <sched.h> */
-#ifdef	_SCHED_H_
-int	__sys_sched_yield(void);
-#endif
-
-/* #include <signal.h> */
-#ifdef _SIGNAL_H_
-int	__sys_kill(pid_t, int);
-int     __sys_sigaction(int, const struct sigaction *, struct sigaction *);
-int     __sys_sigpending(sigset_t *);
-int     __sys_sigprocmask(int, const sigset_t *, sigset_t *);
-int     __sys_sigsuspend(const sigset_t *);
-int     __sys_sigreturn(ucontext_t *);
-int     __sys_sigaltstack(const struct sigaltstack *, struct sigaltstack *);
-#endif
-
-/* #include <sys/socket.h> */
-#ifdef _SYS_SOCKET_H_
-int	__sys_accept(int, struct sockaddr *, socklen_t *);
-int	__sys_connect(int, const struct sockaddr *, socklen_t);
-int	__sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *,
-	    off_t *, int);
-#endif
-
-/* #include <sys/uio.h> */
-#ifdef  _SYS_UIO_H_
-ssize_t __sys_readv(int, const struct iovec *, int);
-ssize_t __sys_writev(int, const struct iovec *, int);
-#endif
-
-/* #include <time.h> */
-#ifdef	_TIME_H_
-int	__sys_nanosleep(const struct timespec *, struct timespec *);
-#endif
-
-/* #include <unistd.h> */
-#ifdef  _UNISTD_H_
-int     __sys_close(int);
-int     __sys_execve(const char *, char * const *, char * const *);
-int	__sys_fork(void);
-int	__sys_fsync(int);
-pid_t	__sys_getpid(void);
-int     __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
-ssize_t __sys_read(int, void *, size_t);
-ssize_t __sys_write(int, const void *, size_t);
-void	__sys_exit(int);
-int	__sys_sigwait(const sigset_t *, int *);
-int	__sys_sigtimedwait(sigset_t *, siginfo_t *, struct timespec *);
-#endif
-
-/* #include <poll.h> */
-#ifdef _SYS_POLL_H_
-int 	__sys_poll(struct pollfd *, unsigned, int);
-#endif
-
-/* #include <sys/mman.h> */
-#ifdef _SYS_MMAN_H_
-int	__sys_msync(void *, size_t, int);
-#endif
-
-static __inline int
-_thr_dump_enabled(void)
-{
-
-	return ((_thr_debug_flags & DBG_INFO_DUMP) != 0);
-}
-
-#endif  /* !_THR_PRIVATE_H */