211 lines
8.0 KiB
C
211 lines
8.0 KiB
C
/* Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _PTHREADP_H
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#define _PTHREADP_H 1
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#include <pthread.h>
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#include <setjmp.h>
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#include <stdint.h>
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#include <sys/syscall.h>
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#include "descr.h"
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#include <tls.h>
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#include <lowlevellock.h>
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#include <stackinfo.h>
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#include <internaltypes.h>
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/* Internal variables. */
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/* Default stack size. */
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extern size_t __default_stacksize attribute_hidden;
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/* Size and alignment of static TLS block. */
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extern size_t __static_tls_size attribute_hidden;
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extern size_t __static_tls_align attribute_hidden;
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/* Thread descriptor handling. */
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extern list_t __stack_user;
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hidden_proto (__stack_user)
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/* Attribute handling. */
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extern struct pthread_attr *__attr_list attribute_hidden;
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extern lll_lock_t __attr_list_lock attribute_hidden;
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/* First available RT signal. */
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extern int __current_sigrtmin attribute_hidden;
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/* Last available RT signal. */
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extern int __current_sigrtmax attribute_hidden;
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/* Concurrency handling. */
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extern int __concurrency_level attribute_hidden;
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/* Thread-local data key handling. */
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extern struct pthread_key_struct __pthread_keys[PTHREAD_KEYS_MAX];
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hidden_proto (__pthread_keys)
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/* The library can run in debugging mode where it performs a lot more
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tests. */
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extern int __pthread_debug attribute_hidden;
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#define DEBUGGING_P __builtin_expect (__pthread_debug, 0)
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/* Cancellation test. */
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#define CANCELLATION_P(self) \
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do { \
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int cancelhandling = THREAD_GETMEM (self, cancelhandling); \
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if (CANCEL_ENABLED_AND_CANCELED (cancelhandling)) \
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{ \
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THREAD_SETMEM (self, result, PTHREAD_CANCELED); \
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__do_cancel (CURRENT_STACK_FRAME); \
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} \
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} while (0)
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/* Set cancellation mode to asynchronous. */
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#define CANCEL_ASYNC() \
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__pthread_enable_asynccancel ()
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/* Reset to previous cancellation mode. */
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#define CANCEL_RESET(oldtype) \
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__pthread_disable_asynccancel (oldtype)
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/* Function performing the cancellation. */
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extern void __do_cancel (char *currentframe)
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__attribute ((visibility ("hidden"), noreturn, regparm (1)));
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extern void __cleanup_thread (struct pthread *self, char *currentframe)
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__attribute ((visibility ("hidden"), regparm (2)));
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/* Test whether stackframe is still active. */
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#ifdef _STACK_GROWS_DOWN
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# define FRAME_LEFT(frame, other) ((char *) frame >= (char *) other)
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#elif _STACK_GROWS_UP
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# define FRAME_LEFT(frame, other) ((char *) frame <= (char *) other)
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#else
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# error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
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#endif
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/* Internal prototypes. */
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/* Thread list handling. */
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extern struct pthread *__find_in_stack_list (struct pthread *pd)
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attribute_hidden;
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/* Deallocate a thread's stack after optionally making sure the thread
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descriptor is still valid. */
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extern void __free_tcb (struct pthread *pd) attribute_hidden;
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/* Free allocated stack. */
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extern void __deallocate_stack (struct pthread *pd) attribute_hidden;
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/* Mark all the stacks except for the current one as available. This
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function also re-initializes the lock for the stack cache. */
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extern void __reclaim_stacks (void) attribute_hidden;
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/* longjmp handling. */
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extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe);
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/* Functions with versioned interfaces. */
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extern int __pthread_create_2_1 (pthread_t *newthread,
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const pthread_attr_t *attr,
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void *(*start_routine) (void *), void *arg);
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extern int __pthread_create_2_0 (pthread_t *newthread,
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const pthread_attr_t *attr,
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void *(*start_routine) (void *), void *arg);
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extern int __pthread_attr_init_2_1 (pthread_attr_t *attr);
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extern int __pthread_attr_init_2_0 (pthread_attr_t *attr);
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/* Event handlers for libthread_db interface. */
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extern void __nptl_create_event (void);
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extern void __nptl_death_event (void);
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hidden_proto (__nptl_create_event)
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hidden_proto (__nptl_death_event)
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/* Namespace save aliases. */
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extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
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__const pthread_mutexattr_t *__mutexattr);
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extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
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extern int __pthread_mutex_trylock (pthread_mutex_t *_mutex);
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extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
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extern int __pthread_mutex_lock_internal (pthread_mutex_t *__mutex);
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extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
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extern int __pthread_mutex_unlock_internal (pthread_mutex_t *__mutex);
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extern int __pthread_mutexattr_init (pthread_mutexattr_t *attr);
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extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *attr);
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extern int __pthread_mutexattr_settype (pthread_mutexattr_t *attr, int kind);
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extern int __pthread_attr_getstackaddr (__const pthread_attr_t *__restrict
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__attr, void **__restrict __stackaddr);
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extern int __pthread_attr_setstackaddr (pthread_attr_t *__attr,
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void *__stackaddr);
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extern int __pthread_attr_getstacksize (__const pthread_attr_t *__restrict
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__attr,
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size_t *__restrict __stacksize);
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extern int __pthread_attr_setstacksize (pthread_attr_t *__attr,
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size_t __stacksize);
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extern int __pthread_attr_getstack (__const pthread_attr_t *__restrict __attr,
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void **__restrict __stackaddr,
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size_t *__restrict __stacksize);
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extern int __pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
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size_t __stacksize);
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extern int __pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
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__const pthread_rwlockattr_t *__restrict
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__attr);
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extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
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extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
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extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
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extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
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extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
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extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
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extern int __pthread_key_create (pthread_key_t *key, void (*destr) (void *));
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extern void *__pthread_getspecific (pthread_key_t key);
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extern int __pthread_setspecific (pthread_key_t key, const void *value);
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extern int __pthread_once (pthread_once_t *once_control,
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void (*init_routine) (void));
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extern int __pthread_once_internal (pthread_once_t *once_control,
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void (*init_routine) (void));
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extern int __pthread_atfork (void (*prepare) (void), void (*parent) (void),
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void (*child) (void));
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extern int __pthread_kill (pthread_t threadid, int signo);
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extern int __pthread_setcanceltype (int type, int *oldtype);
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extern int __pthread_enable_asynccancel (void) attribute_hidden;
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extern void __pthread_disable_asynccancel (int oldtype) attribute_hidden;
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#ifdef IS_IN_libpthread
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/* Special versions which use non-exported functions. */
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extern void _GI_pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
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void (*routine) (void *), void *arg)
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attribute_hidden;
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# undef pthread_cleanup_push
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# define pthread_cleanup_push(routine,arg) \
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{ struct _pthread_cleanup_buffer _buffer; \
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_GI_pthread_cleanup_push (&_buffer, (routine), (arg));
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extern void _GI_pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
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int execute) attribute_hidden;
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# undef pthread_cleanup_pop
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# define pthread_cleanup_pop(execute) \
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_GI_pthread_cleanup_pop (&_buffer, (execute)); }
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#endif
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#endif /* pthreadP.h */
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