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/* Copyright (C) 2002 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 <stdint.h>
#include <sys/syscall.h>
#include "descr.h"
#include <tls.h>
#include <lowlevellock.h>
#include <stackinfo.h>
#include <internaltypes.h>
/* 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 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)
/* The library can run in debugging mode where it performs a lot more
tests. */
extern int __pthread_debug attribute_hidden;
#define DEBUGGING_P __builtin_expect (__pthread_debug, 0)
/* 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 (CURRENT_STACK_FRAME); \
} \
} while (0)
/* Set cancellation mode to asynchronous. */
#define CANCEL_ASYNC(oldtype) \
__pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype)
/* Reset to previous cancellation mode. */
#define CANCEL_RESET(oldtype) \
__pthread_setcanceltype (oldtype, NULL)
/* Function performing the cancellation. */
extern void __do_cancel (char *currentframe)
__attribute ((visibility ("hidden"), noreturn, regparm (1)));
extern void __cleanup_thread (struct pthread *self, char *currentframe)
__attribute ((visibility ("hidden"), regparm (2)));
/* Test whether stackframe is still active. */
#ifdef _STACK_GROWS_DOWN
# define FRAME_LEFT(frame, other) ((char *) frame >= (char *) other)
#elif _STACK_GROWS_UP
# define FRAME_LEFT(frame, other) ((char *) frame <= (char *) other)
#else
# error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
#endif
/* Internal prototypes. */
/* Thread list handling. */
extern struct pthread *__find_in_stack_list (struct pthread *pd)
attribute_hidden;
/* Deallocate a thread's stack after optionally making sure the thread
descriptor is still valid. */
extern void __free_tcb (struct pthread *pd) attribute_hidden;
/* Free allocated stack. */
extern void __deallocate_stack (struct pthread *pd) attribute_hidden;
/* 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)
/* Namespace save aliases. */
extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
__const pthread_mutexattr_t *__mutexattr);
extern int __pthread_mutex_destroy (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_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_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_tryrdlock (pthread_rwlock_t *__rwlock);
extern int __pthread_rwlock_wrlock (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_key_create (pthread_key_t *key, void (*destr) (void *));
extern void *__pthread_getspecific (pthread_key_t key);
extern int __pthread_setspecific (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 int __pthread_kill (pthread_t threadid, int signo);
extern int __pthread_setcanceltype (int type, int *oldtype);
/* Special versions which use non-exported functions. */
extern void _GI_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; \
_GI_pthread_cleanup_push (&_buffer, (routine), (arg));
extern void _GI_pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
int execute) attribute_hidden;
#undef pthread_cleanup_pop
#define pthread_cleanup_pop(execute) \
_GI_pthread_cleanup_pop (&_buffer, (execute)); }
#endif /* pthreadP.h */
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