[thirdparty/glibc.git] / nptl / pthreadP.h

/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef _PTHREADP_H
#define _PTHREADP_H	1

#include <pthread.h>
#include <setjmp.h>
#include <sys/syscall.h>
#include "descr.h"
#include <tls.h>
#include <lowlevellock.h>
#include <stackinfo.h>
#include <internaltypes.h>
#include <pthread-functions.h>
#include <atomic.h>


/* Atomic operations on TLS memory.  */
#ifndef THREAD_ATOMIC_CMPXCHG_VAL
# define THREAD_ATOMIC_CMPXCHG_VAL(descr, member, new, old) \
  atomic_compare_and_exchange_val_acq (&(descr)->member, new, old)
#endif

#ifndef THREAD_ATOMIC_BIT_SET
# define THREAD_ATOMIC_BIT_SET(descr, member, bit) \
  atomic_bit_set (&(descr)->member, bit)
#endif


/* Internal variables.  */


/* Default stack size.  */
extern size_t __default_stacksize attribute_hidden;

/* Size and alignment of static TLS block.  */
extern size_t __static_tls_size attribute_hidden;
extern size_t __static_tls_align_m1 attribute_hidden;

/* Thread descriptor handling.  */
extern list_t __stack_user;
hidden_proto (__stack_user)

/* Attribute handling.  */
extern struct pthread_attr *__attr_list attribute_hidden;
extern lll_lock_t __attr_list_lock attribute_hidden;

/* First available RT signal.  */
extern int __current_sigrtmin attribute_hidden;
/* Last available RT signal.  */
extern int __current_sigrtmax attribute_hidden;

/* Concurrency handling.  */
extern int __concurrency_level attribute_hidden;

/* Thread-local data key handling.  */
extern struct pthread_key_struct __pthread_keys[PTHREAD_KEYS_MAX];
hidden_proto (__pthread_keys)

/* Number of threads running.  */
extern unsigned int __nptl_nthreads attribute_hidden;

/* The library can run in debugging mode where it performs a lot more
   tests.  */
extern int __pthread_debug attribute_hidden;
/** For now disable debugging support.  */
#if 0
# define DEBUGGING_P __builtin_expect (__pthread_debug, 0)
# define INVALID_TD_P(pd) (DEBUGGING_P && __find_in_stack_list (pd) == NULL)
# define INVALID_NOT_TERMINATED_TD_P(pd) INVALID_TD_P (pd)
#else
# define DEBUGGING_P 0
/* Simplified test.  This will not catch all invalid descriptors but
   is better than nothing.  And if the test triggers the thread
   descriptor is guaranteed to be invalid.  */
# define INVALID_TD_P(pd) __builtin_expect ((pd)->tid <= 0, 0)
# define INVALID_NOT_TERMINATED_TD_P(pd) __builtin_expect ((pd)->tid < 0, 0)
#endif


/* Cancellation test.  */
#define CANCELLATION_P(self) \
  do {									      \
    int cancelhandling = THREAD_GETMEM (self, cancelhandling);		      \
    if (CANCEL_ENABLED_AND_CANCELED (cancelhandling))			      \
      {									      \
	THREAD_SETMEM (self, result, PTHREAD_CANCELED);			      \
	__do_cancel ();							      \
      }									      \
  } while (0)


extern void __pthread_unwind (__pthread_unwind_buf_t *__buf)
     __cleanup_fct_attribute __attribute ((__noreturn__))
#ifndef SHARED
     weak_function
#endif
     ;

/* Called when a thread reacts on a cancellation request.  */
static inline void
__attribute ((noreturn, always_inline))
__do_cancel (void)
{
  struct pthread *self = THREAD_SELF;

  /* Make sure we get no more cancellations.  */
  THREAD_ATOMIC_BIT_SET (self, cancelhandling, EXITING_BIT);

  __pthread_unwind ((__pthread_unwind_buf_t *)
		    THREAD_GETMEM (self, cleanup_jmp_buf));
}


/* Set cancellation mode to asynchronous.  */
#define CANCEL_ASYNC() \
  __pthread_enable_asynccancel ()
/* Reset to previous cancellation mode.  */
#define CANCEL_RESET(oldtype) \
  __pthread_disable_asynccancel (oldtype)

#if !defined NOT_IN_libc
/* Same as CANCEL_ASYNC, but for use in libc.so.  */
# define LIBC_CANCEL_ASYNC() \
  __libc_enable_asynccancel ()
/* Same as CANCEL_RESET, but for use in libc.so.  */
# define LIBC_CANCEL_RESET(oldtype) \
  __libc_disable_asynccancel (oldtype)
# define LIBC_CANCEL_HANDLED() \
  __asm (".globl " __SYMBOL_PREFIX "__libc_enable_asynccancel"); \
  __asm (".globl " __SYMBOL_PREFIX "__libc_disable_asynccancel")
#elif defined NOT_IN_libc && defined IS_IN_libpthread
# define LIBC_CANCEL_ASYNC() CANCEL_ASYNC ()
# define LIBC_CANCEL_RESET(val) CANCEL_RESET (val)
# define LIBC_CANCEL_HANDLED() \
  __asm (".globl " __SYMBOL_PREFIX "__pthread_enable_asynccancel"); \
  __asm (".globl " __SYMBOL_PREFIX "__pthread_disable_asynccancel")
#else
# define LIBC_CANCEL_ASYNC()	0 /* Just a dummy value.  */
# define LIBC_CANCEL_RESET(val)	((void)(val)) /* Nothing, but evaluate it.  */
# define LIBC_CANCEL_HANDLED()	/* Nothing.  */
#endif

/* The signal used for asynchronous cancelation.  */
#define SIGCANCEL	__SIGRTMIN


/* Signal needed for the kernel-supported POSIX timer implementation.
   We can reuse the cancellation signal since we can distinguish
   cancellation from timer expirations.  */
#define SIGTIMER	SIGCANCEL


/* Internal prototypes.  */

/* Thread list handling.  */
extern struct pthread *__find_in_stack_list (struct pthread *pd)
     attribute_hidden internal_function;

/* Deallocate a thread's stack after optionally making sure the thread
   descriptor is still valid.  */
extern void __free_tcb (struct pthread *pd) attribute_hidden internal_function;

/* Free allocated stack.  */
extern void __deallocate_stack (struct pthread *pd)
     attribute_hidden internal_function;

/* Mark all the stacks except for the current one as available.  This
   function also re-initializes the lock for the stack cache.  */
extern void __reclaim_stacks (void) attribute_hidden;

/* longjmp handling.  */
extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe);


/* Functions with versioned interfaces.  */
extern int __pthread_create_2_1 (pthread_t *newthread,
				 const pthread_attr_t *attr,
				 void *(*start_routine) (void *), void *arg);
extern int __pthread_create_2_0 (pthread_t *newthread,
				 const pthread_attr_t *attr,
				 void *(*start_routine) (void *), void *arg);
extern int __pthread_attr_init_2_1 (pthread_attr_t *attr);
extern int __pthread_attr_init_2_0 (pthread_attr_t *attr);


/* Event handlers for libthread_db interface.  */
extern void __nptl_create_event (void);
extern void __nptl_death_event (void);
hidden_proto (__nptl_create_event)
hidden_proto (__nptl_death_event)

/* Register the generation counter in the libpthread with the libc.  */
#ifdef TLS_MULTIPLE_THREADS_IN_TCB
extern void __libc_pthread_init (unsigned long int *ptr,
				 void (*reclaim) (void),
				 const struct pthread_functions *functions)
     internal_function;
#else
extern int *__libc_pthread_init (unsigned long int *ptr,
				 void (*reclaim) (void),
				 const struct pthread_functions *functions)
     internal_function;

/* Variable set to a nonzero value if more than one thread runs or ran.  */
extern int __pthread_multiple_threads attribute_hidden;
/* Pointer to the corresponding variable in libc.  */
extern int *__libc_multiple_threads_ptr attribute_hidden;
#endif


/* Namespace save aliases.  */
extern int __pthread_getschedparam (pthread_t thread_id, int *policy,
				    struct sched_param *param);
extern int __pthread_setschedparam (pthread_t thread_id, int policy,
				    const struct sched_param *param);
extern int __pthread_setcancelstate (int state, int *oldstate);
extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
				 __const pthread_mutexattr_t *__mutexattr);
extern int __pthread_mutex_init_internal (pthread_mutex_t *__mutex,
					  __const pthread_mutexattr_t *__mutexattr);
extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
extern int __pthread_mutex_destroy_internal (pthread_mutex_t *__mutex);
extern int __pthread_mutex_trylock (pthread_mutex_t *_mutex);
extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
extern int __pthread_mutex_lock_internal (pthread_mutex_t *__mutex);
extern int __pthread_mutex_cond_lock (pthread_mutex_t *__mutex)
     attribute_hidden;
extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
extern int __pthread_mutex_unlock_internal (pthread_mutex_t *__mutex);
extern int __pthread_mutexattr_init (pthread_mutexattr_t *attr);
extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *attr);
extern int __pthread_mutexattr_settype (pthread_mutexattr_t *attr, int kind);
extern int __pthread_attr_destroy (pthread_attr_t *attr);
extern int __pthread_attr_getdetachstate (const pthread_attr_t *attr,
					  int *detachstate);
extern int __pthread_attr_setdetachstate (pthread_attr_t *attr,
					  int detachstate);
extern int __pthread_attr_getinheritsched (const pthread_attr_t *attr,
					   int *inherit);
extern int __pthread_attr_setinheritsched (pthread_attr_t *attr, int inherit);
extern int __pthread_attr_getschedparam (const pthread_attr_t *attr,
					 struct sched_param *param);
extern int __pthread_attr_setschedparam (pthread_attr_t *attr,
					 const struct sched_param *param);
extern int __pthread_attr_getschedpolicy (const pthread_attr_t *attr,
					  int *policy);
extern int __pthread_attr_setschedpolicy (pthread_attr_t *attr, int policy);
extern int __pthread_attr_getscope (const pthread_attr_t *attr, int *scope);
extern int __pthread_attr_setscope (pthread_attr_t *attr, int scope);
extern int __pthread_attr_getstackaddr (__const pthread_attr_t *__restrict
					__attr, void **__restrict __stackaddr);
extern int __pthread_attr_setstackaddr (pthread_attr_t *__attr,
					void *__stackaddr);
extern int __pthread_attr_getstacksize (__const pthread_attr_t *__restrict
					__attr,
					size_t *__restrict __stacksize);
extern int __pthread_attr_setstacksize (pthread_attr_t *__attr,
					size_t __stacksize);
extern int __pthread_attr_getstack (__const pthread_attr_t *__restrict __attr,
				    void **__restrict __stackaddr,
				    size_t *__restrict __stacksize);
extern int __pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
				    size_t __stacksize);
extern int __pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
				  __const pthread_rwlockattr_t *__restrict
				  __attr);
extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
extern int __pthread_rwlock_rdlock_internal (pthread_rwlock_t *__rwlock);
extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
extern int __pthread_rwlock_wrlock_internal (pthread_rwlock_t *__rwlock);
extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
extern int __pthread_rwlock_unlock_internal (pthread_rwlock_t *__rwlock);
extern int __pthread_cond_broadcast (pthread_cond_t *cond);
extern int __pthread_cond_destroy (pthread_cond_t *cond);
extern int __pthread_cond_init (pthread_cond_t *cond,
				const pthread_condattr_t *cond_attr);
extern int __pthread_cond_signal (pthread_cond_t *cond);
extern int __pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex);
extern int __pthread_cond_timedwait (pthread_cond_t *cond,
				     pthread_mutex_t *mutex,
				     const struct timespec *abstime);
extern int __pthread_condattr_destroy (pthread_condattr_t *attr);
extern int __pthread_condattr_init (pthread_condattr_t *attr);
extern int __pthread_key_create (pthread_key_t *key, void (*destr) (void *));
extern int __pthread_key_create_internal (pthread_key_t *key,
					  void (*destr) (void *));
extern void *__pthread_getspecific (pthread_key_t key);
extern void *__pthread_getspecific_internal (pthread_key_t key);
extern int __pthread_setspecific (pthread_key_t key, const void *value);
extern int __pthread_setspecific_internal (pthread_key_t key,
					   const void *value);
extern int __pthread_once (pthread_once_t *once_control,
			   void (*init_routine) (void));
extern int __pthread_once_internal (pthread_once_t *once_control,
				    void (*init_routine) (void));
extern int __pthread_atfork (void (*prepare) (void), void (*parent) (void),
			     void (*child) (void));
extern pthread_t __pthread_self (void);
extern int __pthread_equal (pthread_t thread1, pthread_t thread2);
extern int __pthread_kill (pthread_t threadid, int signo);
extern void __pthread_exit (void *value);
extern int __pthread_setcanceltype (int type, int *oldtype);
extern int __pthread_enable_asynccancel (void) attribute_hidden;
extern void __pthread_disable_asynccancel (int oldtype)
     internal_function attribute_hidden;

extern int __pthread_cond_broadcast_2_0 (pthread_cond_2_0_t *cond);
extern int __pthread_cond_destroy_2_0 (pthread_cond_2_0_t *cond);
extern int __pthread_cond_init_2_0 (pthread_cond_2_0_t *cond,
				    const pthread_condattr_t *cond_attr);
extern int __pthread_cond_signal_2_0 (pthread_cond_2_0_t *cond);
extern int __pthread_cond_timedwait_2_0 (pthread_cond_2_0_t *cond,
					 pthread_mutex_t *mutex,
					 const struct timespec *abstime);
extern int __pthread_cond_wait_2_0 (pthread_cond_2_0_t *cond,
				    pthread_mutex_t *mutex);


/* The two functions are in libc.so and not exported.  */
extern int __libc_enable_asynccancel (void) attribute_hidden;
extern void __libc_disable_asynccancel (int oldtype)
     internal_function attribute_hidden;

#ifdef IS_IN_libpthread
/* Special versions which use non-exported functions.  */
extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
				    void (*routine) (void *), void *arg)
     attribute_hidden;
# undef pthread_cleanup_push
# define pthread_cleanup_push(routine,arg) \
  { struct _pthread_cleanup_buffer _buffer;				      \
    __pthread_cleanup_push (&_buffer, (routine), (arg));

extern void __pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
				   int execute) attribute_hidden;
# undef pthread_cleanup_pop
# define pthread_cleanup_pop(execute) \
    __pthread_cleanup_pop (&_buffer, (execute)); }
#endif

extern void __pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
					  void (*routine) (void *), void *arg);
extern void __pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
					   int execute);

/* Old cleanup interfaces, still used in libc.so.  */
extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
                                   void (*routine) (void *), void *arg);
extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
                                  int execute);
extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
                                         void (*routine) (void *), void *arg);
extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
                                          int execute);

#endif	/* pthreadP.h */
Commit	Line	Data
bf293afe	1	/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
76a50749 UD	2	This file is part of the GNU C Library.
	3	Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
	16	License along with the GNU C Library; if not, write to the Free
	17	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	18	02111-1307 USA. */
	19
	20	#ifndef _PTHREADP_H
	21	#define _PTHREADP_H 1
	22
	23	#include <pthread.h>
	24	#include <setjmp.h>
76a50749 UD	25	#include <sys/syscall.h>
	26	#include "descr.h"
	27	#include <tls.h>
	28	#include <lowlevellock.h>
	29	#include <stackinfo.h>
	30	#include <internaltypes.h>
73e9ae88	31	#include <pthread-functions.h>
86246935	32	#include <atomic.h>
76a50749 UD	33
76a50749 UD	34
a1b5424f UD	35	/* Atomic operations on TLS memory. */
	36	#ifndef THREAD_ATOMIC_CMPXCHG_VAL
	37	# define THREAD_ATOMIC_CMPXCHG_VAL(descr, member, new, old) \
	38	atomic_compare_and_exchange_val_acq (&(descr)->member, new, old)
	39	#endif
	40
	41	#ifndef THREAD_ATOMIC_BIT_SET
	42	# define THREAD_ATOMIC_BIT_SET(descr, member, bit) \
	43	atomic_bit_set (&(descr)->member, bit)
	44	#endif
	45
	46
76a50749 UD	47	/* Internal variables. */
	48
	49
	50	/* Default stack size. */
	51	extern size_t __default_stacksize attribute_hidden;
	52
	53	/* Size and alignment of static TLS block. */
	54	extern size_t __static_tls_size attribute_hidden;
bc6389ad	55	extern size_t __static_tls_align_m1 attribute_hidden;
76a50749 UD	56
76a50749 UD	57	/* Thread descriptor handling. */
fa9a4ff0 RM	58	extern list_t __stack_user;
fa9a4ff0 RM	59	hidden_proto (__stack_user)
76a50749 UD	60
	61	/* Attribute handling. */
	62	extern struct pthread_attr *__attr_list attribute_hidden;
	63	extern lll_lock_t __attr_list_lock attribute_hidden;
	64
	65	/* First available RT signal. */
	66	extern int __current_sigrtmin attribute_hidden;
	67	/* Last available RT signal. */
	68	extern int __current_sigrtmax attribute_hidden;
	69
	70	/* Concurrency handling. */
	71	extern int __concurrency_level attribute_hidden;
	72
	73	/* Thread-local data key handling. */
fa9a4ff0 RM	74	extern struct pthread_key_struct __pthread_keys[PTHREAD_KEYS_MAX];
fa9a4ff0 RM	75	hidden_proto (__pthread_keys)
76a50749	76
47202270 UD	77	/* Number of threads running. */
	78	extern unsigned int __nptl_nthreads attribute_hidden;
	79
76a50749 UD	80	/* The library can run in debugging mode where it performs a lot more
	81	tests. */
	82	extern int __pthread_debug attribute_hidden;
729924a0 UD	83	/** For now disable debugging support. */
	84	#if 0
	85	# define DEBUGGING_P __builtin_expect (__pthread_debug, 0)
8c2e9a29 UD	86	# define INVALID_TD_P(pd) (DEBUGGING_P && __find_in_stack_list (pd) == NULL)
8c2e9a29 UD	87	# define INVALID_NOT_TERMINATED_TD_P(pd) INVALID_TD_P (pd)
729924a0 UD	88	#else
729924a0 UD	89	# define DEBUGGING_P 0
8c2e9a29 UD	90	/* Simplified test. This will not catch all invalid descriptors but
	91	is better than nothing. And if the test triggers the thread
	92	descriptor is guaranteed to be invalid. */
	93	# define INVALID_TD_P(pd) __builtin_expect ((pd)->tid <= 0, 0)
	94	# define INVALID_NOT_TERMINATED_TD_P(pd) __builtin_expect ((pd)->tid < 0, 0)
729924a0	95	#endif
76a50749 UD	96
	97
	98	/* Cancellation test. */
	99	#define CANCELLATION_P(self) \
	100	do { \
	101	int cancelhandling = THREAD_GETMEM (self, cancelhandling); \
	102	if (CANCEL_ENABLED_AND_CANCELED (cancelhandling)) \
	103	{ \
	104	THREAD_SETMEM (self, result, PTHREAD_CANCELED); \
9ae0909b	105	__do_cancel (); \
76a50749 UD	106	} \
	107	} while (0)
	108
6efd4814 UD	109
	110	extern void __pthread_unwind (__pthread_unwind_buf_t *__buf)
	111	__cleanup_fct_attribute __attribute ((__noreturn__))
	112	#ifndef SHARED
	113	weak_function
	114	#endif
	115	;
	116
	117	/* Called when a thread reacts on a cancellation request. */
	118	static inline void
dd9423a6	119	__attribute ((noreturn, always_inline))
6efd4814 UD	120	__do_cancel (void)
	121	{
	122	struct pthread *self = THREAD_SELF;
	123
	124	/* Make sure we get no more cancellations. */
	125	THREAD_ATOMIC_BIT_SET (self, cancelhandling, EXITING_BIT);
	126
	127	__pthread_unwind ((__pthread_unwind_buf_t *)
	128	THREAD_GETMEM (self, cleanup_jmp_buf));
	129	}
	130
	131
76a50749	132	/* Set cancellation mode to asynchronous. */
bdb04f92 UD	133	#define CANCEL_ASYNC() \
bdb04f92 UD	134	__pthread_enable_asynccancel ()
76a50749 UD	135	/* Reset to previous cancellation mode. */
76a50749 UD	136	#define CANCEL_RESET(oldtype) \
bdb04f92	137	__pthread_disable_asynccancel (oldtype)
76a50749	138
9634cf9d	139	#if !defined NOT_IN_libc
9ae0909b	140	/* Same as CANCEL_ASYNC, but for use in libc.so. */
9634cf9d	141	# define LIBC_CANCEL_ASYNC() \
9ae0909b UD	142	__libc_enable_asynccancel ()
9ae0909b UD	143	/* Same as CANCEL_RESET, but for use in libc.so. */
9634cf9d	144	# define LIBC_CANCEL_RESET(oldtype) \
9ae0909b	145	__libc_disable_asynccancel (oldtype)
52f3d213 UD	146	# define LIBC_CANCEL_HANDLED() \
	147	__asm (".globl " __SYMBOL_PREFIX "__libc_enable_asynccancel"); \
	148	__asm (".globl " __SYMBOL_PREFIX "__libc_disable_asynccancel")
9634cf9d UD	149	#elif defined NOT_IN_libc && defined IS_IN_libpthread
	150	# define LIBC_CANCEL_ASYNC() CANCEL_ASYNC ()
	151	# define LIBC_CANCEL_RESET(val) CANCEL_RESET (val)
52f3d213 UD	152	# define LIBC_CANCEL_HANDLED() \
	153	__asm (".globl " __SYMBOL_PREFIX "__pthread_enable_asynccancel"); \
	154	__asm (".globl " __SYMBOL_PREFIX "__pthread_disable_asynccancel")
9634cf9d UD	155	#else
	156	# define LIBC_CANCEL_ASYNC() 0 /* Just a dummy value. */
	157	# define LIBC_CANCEL_RESET(val) ((void)(val)) /* Nothing, but evaluate it. */
52f3d213	158	# define LIBC_CANCEL_HANDLED() /* Nothing. */
9634cf9d	159	#endif
9ae0909b	160
2a9ae45c UD	161	/* The signal used for asynchronous cancelation. */
	162	#define SIGCANCEL __SIGRTMIN
	163
	164
e7608d77 UD	165	/* Signal needed for the kernel-supported POSIX timer implementation.
	166	We can reuse the cancellation signal since we can distinguish
	167	cancellation from timer expirations. */
	168	#define SIGTIMER SIGCANCEL
2a9ae45c	169
9ae0909b	170
76a50749 UD	171	/* Internal prototypes. */
	172
	173	/* Thread list handling. */
	174	extern struct pthread __find_in_stack_list (struct pthread pd)
90491dc4	175	attribute_hidden internal_function;
76a50749 UD	176
	177	/* Deallocate a thread's stack after optionally making sure the thread
	178	descriptor is still valid. */
90491dc4	179	extern void __free_tcb (struct pthread *pd) attribute_hidden internal_function;
76a50749 UD	180
76a50749 UD	181	/* Free allocated stack. */
90491dc4 UD	182	extern void __deallocate_stack (struct pthread *pd)
90491dc4 UD	183	attribute_hidden internal_function;
76a50749 UD	184
	185	/* Mark all the stacks except for the current one as available. This
	186	function also re-initializes the lock for the stack cache. */
	187	extern void __reclaim_stacks (void) attribute_hidden;
	188
	189	/* longjmp handling. */
	190	extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe);
	191
	192
	193	/* Functions with versioned interfaces. */
	194	extern int __pthread_create_2_1 (pthread_t *newthread,
	195	const pthread_attr_t *attr,
	196	void (start_routine) (void ), void arg);
	197	extern int __pthread_create_2_0 (pthread_t *newthread,
	198	const pthread_attr_t *attr,
	199	void (start_routine) (void ), void arg);
	200	extern int __pthread_attr_init_2_1 (pthread_attr_t *attr);
	201	extern int __pthread_attr_init_2_0 (pthread_attr_t *attr);
	202
	203
	204	/* Event handlers for libthread_db interface. */
fa9a4ff0 RM	205	extern void __nptl_create_event (void);
	206	extern void __nptl_death_event (void);
	207	hidden_proto (__nptl_create_event)
	208	hidden_proto (__nptl_death_event)
76a50749	209
8454830b	210	/* Register the generation counter in the libpthread with the libc. */
5a03acfe	211	#ifdef TLS_MULTIPLE_THREADS_IN_TCB
8454830b UD	212	extern void __libc_pthread_init (unsigned long int *ptr,
8454830b UD	213	void (*reclaim) (void),
5a03acfe UD	214	const struct pthread_functions *functions)
	215	internal_function;
	216	#else
	217	extern int __libc_pthread_init (unsigned long int ptr,
	218	void (*reclaim) (void),
	219	const struct pthread_functions *functions)
	220	internal_function;
	221
	222	/* Variable set to a nonzero value if more than one thread runs or ran. */
	223	extern int __pthread_multiple_threads attribute_hidden;
	224	/* Pointer to the corresponding variable in libc. */
	225	extern int *__libc_multiple_threads_ptr attribute_hidden;
	226	#endif
8454830b	227
76a50749 UD	228
76a50749 UD	229	/* Namespace save aliases. */
8454830b UD	230	extern int __pthread_getschedparam (pthread_t thread_id, int *policy,
	231	struct sched_param *param);
	232	extern int __pthread_setschedparam (pthread_t thread_id, int policy,
	233	const struct sched_param *param);
	234	extern int __pthread_setcancelstate (int state, int *oldstate);
76a50749 UD	235	extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
76a50749 UD	236	__const pthread_mutexattr_t *__mutexattr);
8454830b UD	237	extern int __pthread_mutex_init_internal (pthread_mutex_t *__mutex,
8454830b UD	238	__const pthread_mutexattr_t *__mutexattr);
76a50749	239	extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
8454830b	240	extern int __pthread_mutex_destroy_internal (pthread_mutex_t *__mutex);
76a50749 UD	241	extern int __pthread_mutex_trylock (pthread_mutex_t *_mutex);
76a50749 UD	242	extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
09efc3ba	243	extern int __pthread_mutex_lock_internal (pthread_mutex_t *__mutex);
69431c9a UD	244	extern int __pthread_mutex_cond_lock (pthread_mutex_t *__mutex)
69431c9a UD	245	attribute_hidden;
76a50749	246	extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
09efc3ba	247	extern int __pthread_mutex_unlock_internal (pthread_mutex_t *__mutex);
76a50749 UD	248	extern int __pthread_mutexattr_init (pthread_mutexattr_t *attr);
	249	extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *attr);
	250	extern int __pthread_mutexattr_settype (pthread_mutexattr_t *attr, int kind);
8454830b UD	251	extern int __pthread_attr_destroy (pthread_attr_t *attr);
	252	extern int __pthread_attr_getdetachstate (const pthread_attr_t *attr,
	253	int *detachstate);
	254	extern int __pthread_attr_setdetachstate (pthread_attr_t *attr,
	255	int detachstate);
	256	extern int __pthread_attr_getinheritsched (const pthread_attr_t *attr,
	257	int *inherit);
	258	extern int __pthread_attr_setinheritsched (pthread_attr_t *attr, int inherit);
	259	extern int __pthread_attr_getschedparam (const pthread_attr_t *attr,
	260	struct sched_param *param);
	261	extern int __pthread_attr_setschedparam (pthread_attr_t *attr,
	262	const struct sched_param *param);
	263	extern int __pthread_attr_getschedpolicy (const pthread_attr_t *attr,
	264	int *policy);
	265	extern int __pthread_attr_setschedpolicy (pthread_attr_t *attr, int policy);
	266	extern int __pthread_attr_getscope (const pthread_attr_t attr, int scope);
	267	extern int __pthread_attr_setscope (pthread_attr_t *attr, int scope);
76a50749 UD	268	extern int __pthread_attr_getstackaddr (__const pthread_attr_t *__restrict
	269	__attr, void **__restrict __stackaddr);
	270	extern int __pthread_attr_setstackaddr (pthread_attr_t *__attr,
	271	void *__stackaddr);
	272	extern int __pthread_attr_getstacksize (__const pthread_attr_t *__restrict
	273	__attr,
	274	size_t *__restrict __stacksize);
	275	extern int __pthread_attr_setstacksize (pthread_attr_t *__attr,
	276	size_t __stacksize);
	277	extern int __pthread_attr_getstack (__const pthread_attr_t *__restrict __attr,
	278	void **__restrict __stackaddr,
	279	size_t *__restrict __stacksize);
	280	extern int __pthread_attr_setstack (pthread_attr_t __attr, void __stackaddr,
	281	size_t __stacksize);
	282	extern int __pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
	283	__const pthread_rwlockattr_t *__restrict
	284	__attr);
	285	extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
	286	extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
73e9ae88	287	extern int __pthread_rwlock_rdlock_internal (pthread_rwlock_t *__rwlock);
76a50749 UD	288	extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
76a50749 UD	289	extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
73e9ae88	290	extern int __pthread_rwlock_wrlock_internal (pthread_rwlock_t *__rwlock);
76a50749 UD	291	extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
76a50749 UD	292	extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
73e9ae88	293	extern int __pthread_rwlock_unlock_internal (pthread_rwlock_t *__rwlock);
8454830b UD	294	extern int __pthread_cond_broadcast (pthread_cond_t *cond);
	295	extern int __pthread_cond_destroy (pthread_cond_t *cond);
	296	extern int __pthread_cond_init (pthread_cond_t *cond,
	297	const pthread_condattr_t *cond_attr);
	298	extern int __pthread_cond_signal (pthread_cond_t *cond);
	299	extern int __pthread_cond_wait (pthread_cond_t cond, pthread_mutex_t mutex);
b5facfda UD	300	extern int __pthread_cond_timedwait (pthread_cond_t *cond,
	301	pthread_mutex_t *mutex,
	302	const struct timespec *abstime);
8454830b UD	303	extern int __pthread_condattr_destroy (pthread_condattr_t *attr);
8454830b UD	304	extern int __pthread_condattr_init (pthread_condattr_t *attr);
76a50749	305	extern int __pthread_key_create (pthread_key_t key, void (destr) (void *));
73e9ae88 UD	306	extern int __pthread_key_create_internal (pthread_key_t *key,
73e9ae88 UD	307	void (destr) (void ));
76a50749	308	extern void *__pthread_getspecific (pthread_key_t key);
73e9ae88	309	extern void *__pthread_getspecific_internal (pthread_key_t key);
76a50749	310	extern int __pthread_setspecific (pthread_key_t key, const void *value);
73e9ae88 UD	311	extern int __pthread_setspecific_internal (pthread_key_t key,
73e9ae88 UD	312	const void *value);
76a50749 UD	313	extern int __pthread_once (pthread_once_t *once_control,
76a50749 UD	314	void (*init_routine) (void));
09efc3ba UD	315	extern int __pthread_once_internal (pthread_once_t *once_control,
09efc3ba UD	316	void (*init_routine) (void));
76a50749 UD	317	extern int __pthread_atfork (void (prepare) (void), void (parent) (void),
76a50749 UD	318	void (*child) (void));
8454830b UD	319	extern pthread_t __pthread_self (void);
8454830b UD	320	extern int __pthread_equal (pthread_t thread1, pthread_t thread2);
09efc3ba	321	extern int __pthread_kill (pthread_t threadid, int signo);
8454830b	322	extern void __pthread_exit (void *value);
09efc3ba	323	extern int __pthread_setcanceltype (int type, int *oldtype);
bdb04f92	324	extern int __pthread_enable_asynccancel (void) attribute_hidden;
9ae0909b UD	325	extern void __pthread_disable_asynccancel (int oldtype)
	326	internal_function attribute_hidden;
	327
997256dd UD	328	extern int __pthread_cond_broadcast_2_0 (pthread_cond_2_0_t *cond);
	329	extern int __pthread_cond_destroy_2_0 (pthread_cond_2_0_t *cond);
	330	extern int __pthread_cond_init_2_0 (pthread_cond_2_0_t *cond,
05df18c3	331	const pthread_condattr_t *cond_attr);
997256dd UD	332	extern int __pthread_cond_signal_2_0 (pthread_cond_2_0_t *cond);
997256dd UD	333	extern int __pthread_cond_timedwait_2_0 (pthread_cond_2_0_t *cond,
05df18c3 UD	334	pthread_mutex_t *mutex,
05df18c3 UD	335	const struct timespec *abstime);
997256dd	336	extern int __pthread_cond_wait_2_0 (pthread_cond_2_0_t *cond,
05df18c3 UD	337	pthread_mutex_t *mutex);
05df18c3 UD	338
73e9ae88	339
9ae0909b UD	340	/* The two functions are in libc.so and not exported. */
	341	extern int __libc_enable_asynccancel (void) attribute_hidden;
	342	extern void __libc_disable_asynccancel (int oldtype)
	343	internal_function attribute_hidden;
09efc3ba	344
1e506629	345	#ifdef IS_IN_libpthread
09efc3ba	346	/* Special versions which use non-exported functions. */
73e9ae88 UD	347	extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
73e9ae88 UD	348	void (routine) (void ), void *arg)
09efc3ba	349	attribute_hidden;
1e506629 UD	350	# undef pthread_cleanup_push
1e506629 UD	351	# define pthread_cleanup_push(routine,arg) \
09efc3ba	352	{ struct _pthread_cleanup_buffer _buffer; \
73e9ae88	353	__pthread_cleanup_push (&_buffer, (routine), (arg));
09efc3ba	354
73e9ae88 UD	355	extern void __pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
73e9ae88 UD	356	int execute) attribute_hidden;
1e506629 UD	357	# undef pthread_cleanup_pop
1e506629 UD	358	# define pthread_cleanup_pop(execute) \
73e9ae88	359	__pthread_cleanup_pop (&_buffer, (execute)); }
1e506629	360	#endif
76a50749	361
73e9ae88 UD	362	extern void __pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
	363	void (routine) (void ), void *arg);
	364	extern void __pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
	365	int execute);
	366
6efd4814 UD	367	/* Old cleanup interfaces, still used in libc.so. */
	368	extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
	369	void (routine) (void ), void *arg);
	370	extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
	371	int execute);
	372	extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
	373	void (routine) (void ), void *arg);
	374	extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
	375	int execute);
	376
76a50749	377	#endif /* pthreadP.h */