| /* Copyright (C) 2002-2016 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _PTHREADP_H |
| #define _PTHREADP_H 1 |
| |
| #include <pthread.h> |
| #include <setjmp.h> |
| #include <stdbool.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> |
| #include <kernel-features.h> |
| #include <errno.h> |
| #include <nptl-signals.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 |
| |
| |
| /* Adaptive mutex definitions. */ |
| #ifndef MAX_ADAPTIVE_COUNT |
| # define MAX_ADAPTIVE_COUNT 100 |
| #endif |
| |
| |
| /* Magic cookie representing robust mutex with dead owner. */ |
| #define PTHREAD_MUTEX_INCONSISTENT INT_MAX |
| /* Magic cookie representing not recoverable robust mutex. */ |
| #define PTHREAD_MUTEX_NOTRECOVERABLE (INT_MAX - 1) |
| |
| |
| /* Internal mutex type value. */ |
| enum |
| { |
| PTHREAD_MUTEX_KIND_MASK_NP = 3, |
| |
| PTHREAD_MUTEX_ELISION_NP = 256, |
| PTHREAD_MUTEX_NO_ELISION_NP = 512, |
| |
| PTHREAD_MUTEX_ROBUST_NORMAL_NP = 16, |
| PTHREAD_MUTEX_ROBUST_RECURSIVE_NP |
| = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_RECURSIVE_NP, |
| PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP |
| = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_ERRORCHECK_NP, |
| PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP |
| = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_ADAPTIVE_NP, |
| PTHREAD_MUTEX_PRIO_INHERIT_NP = 32, |
| PTHREAD_MUTEX_PI_NORMAL_NP |
| = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_NORMAL, |
| PTHREAD_MUTEX_PI_RECURSIVE_NP |
| = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_RECURSIVE_NP, |
| PTHREAD_MUTEX_PI_ERRORCHECK_NP |
| = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ERRORCHECK_NP, |
| PTHREAD_MUTEX_PI_ADAPTIVE_NP |
| = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ADAPTIVE_NP, |
| PTHREAD_MUTEX_PI_ROBUST_NORMAL_NP |
| = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_NORMAL_NP, |
| PTHREAD_MUTEX_PI_ROBUST_RECURSIVE_NP |
| = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_RECURSIVE_NP, |
| PTHREAD_MUTEX_PI_ROBUST_ERRORCHECK_NP |
| = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP, |
| PTHREAD_MUTEX_PI_ROBUST_ADAPTIVE_NP |
| = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP, |
| PTHREAD_MUTEX_PRIO_PROTECT_NP = 64, |
| PTHREAD_MUTEX_PP_NORMAL_NP |
| = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_NORMAL, |
| PTHREAD_MUTEX_PP_RECURSIVE_NP |
| = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_RECURSIVE_NP, |
| PTHREAD_MUTEX_PP_ERRORCHECK_NP |
| = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_ERRORCHECK_NP, |
| PTHREAD_MUTEX_PP_ADAPTIVE_NP |
| = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_ADAPTIVE_NP, |
| PTHREAD_MUTEX_ELISION_FLAGS_NP |
| = PTHREAD_MUTEX_ELISION_NP | PTHREAD_MUTEX_NO_ELISION_NP, |
| |
| PTHREAD_MUTEX_TIMED_ELISION_NP = |
| PTHREAD_MUTEX_TIMED_NP | PTHREAD_MUTEX_ELISION_NP, |
| PTHREAD_MUTEX_TIMED_NO_ELISION_NP = |
| PTHREAD_MUTEX_TIMED_NP | PTHREAD_MUTEX_NO_ELISION_NP, |
| }; |
| #define PTHREAD_MUTEX_PSHARED_BIT 128 |
| |
| #define PTHREAD_MUTEX_TYPE(m) \ |
| ((m)->__data.__kind & 127) |
| /* Don't include NO_ELISION, as that type is always the same |
| as the underlying lock type. */ |
| #define PTHREAD_MUTEX_TYPE_ELISION(m) \ |
| ((m)->__data.__kind & (127|PTHREAD_MUTEX_ELISION_NP)) |
| |
| #if LLL_PRIVATE == 0 && LLL_SHARED == 128 |
| # define PTHREAD_MUTEX_PSHARED(m) \ |
| ((m)->__data.__kind & 128) |
| #else |
| # define PTHREAD_MUTEX_PSHARED(m) \ |
| (((m)->__data.__kind & 128) ? LLL_SHARED : LLL_PRIVATE) |
| #endif |
| |
| /* The kernel when waking robust mutexes on exit never uses |
| FUTEX_PRIVATE_FLAG FUTEX_WAKE. */ |
| #define PTHREAD_ROBUST_MUTEX_PSHARED(m) LLL_SHARED |
| |
| /* Ceiling in __data.__lock. __data.__lock is signed, so don't |
| use the MSB bit in there, but in the mask also include that bit, |
| so that the compiler can optimize & PTHREAD_MUTEX_PRIO_CEILING_MASK |
| masking if the value is then shifted down by |
| PTHREAD_MUTEX_PRIO_CEILING_SHIFT. */ |
| #define PTHREAD_MUTEX_PRIO_CEILING_SHIFT 19 |
| #define PTHREAD_MUTEX_PRIO_CEILING_MASK 0xfff80000 |
| |
| |
| /* Flags in mutex attr. */ |
| #define PTHREAD_MUTEXATTR_PROTOCOL_SHIFT 28 |
| #define PTHREAD_MUTEXATTR_PROTOCOL_MASK 0x30000000 |
| #define PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT 12 |
| #define PTHREAD_MUTEXATTR_PRIO_CEILING_MASK 0x00fff000 |
| #define PTHREAD_MUTEXATTR_FLAG_ROBUST 0x40000000 |
| #define PTHREAD_MUTEXATTR_FLAG_PSHARED 0x80000000 |
| #define PTHREAD_MUTEXATTR_FLAG_BITS \ |
| (PTHREAD_MUTEXATTR_FLAG_ROBUST | PTHREAD_MUTEXATTR_FLAG_PSHARED \ |
| | PTHREAD_MUTEXATTR_PROTOCOL_MASK | PTHREAD_MUTEXATTR_PRIO_CEILING_MASK) |
| |
| |
| /* Check whether rwlock prefers readers. */ |
| #define PTHREAD_RWLOCK_PREFER_READER_P(rwlock) \ |
| ((rwlock)->__data.__flags == 0) |
| |
| |
| /* Bits used in robust mutex implementation. */ |
| #define FUTEX_WAITERS 0x80000000 |
| #define FUTEX_OWNER_DIED 0x40000000 |
| #define FUTEX_TID_MASK 0x3fffffff |
| |
| |
| /* pthread_once definitions. See __pthread_once for how these are used. */ |
| #define __PTHREAD_ONCE_INPROGRESS 1 |
| #define __PTHREAD_ONCE_DONE 2 |
| #define __PTHREAD_ONCE_FORK_GEN_INCR 4 |
| |
| |
| /* Internal variables. */ |
| |
| |
| /* Default pthread attributes. */ |
| extern struct pthread_attr __default_pthread_attr attribute_hidden; |
| extern int __default_pthread_attr_lock 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; |
| |
| /* Flag whether the machine is SMP or not. */ |
| extern int __is_smp 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 int __attr_list_lock 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; |
| |
| #ifndef __ASSUME_SET_ROBUST_LIST |
| /* Negative if we do not have the system call and we can use it. */ |
| extern int __set_robust_list_avail attribute_hidden; |
| #endif |
| |
| /* Thread Priority Protection. */ |
| extern int __sched_fifo_min_prio attribute_hidden; |
| extern int __sched_fifo_max_prio attribute_hidden; |
| extern void __init_sched_fifo_prio (void) attribute_hidden; |
| extern int __pthread_tpp_change_priority (int prev_prio, int new_prio) |
| attribute_hidden; |
| extern int __pthread_current_priority (void) 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__)) |
| #if !defined SHARED && !IS_IN (libpthread) |
| weak_function |
| #endif |
| ; |
| extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf) |
| __cleanup_fct_attribute __attribute ((__noreturn__)) |
| #ifndef SHARED |
| weak_function |
| #endif |
| ; |
| extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf) |
| __cleanup_fct_attribute; |
| extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf) |
| __cleanup_fct_attribute; |
| #if IS_IN (libpthread) |
| hidden_proto (__pthread_unwind) |
| hidden_proto (__pthread_unwind_next) |
| hidden_proto (__pthread_register_cancel) |
| hidden_proto (__pthread_unregister_cancel) |
| # ifdef SHARED |
| extern void attribute_hidden pthread_cancel_init (void); |
| extern void __unwind_freeres (void); |
| # endif |
| #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 IS_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 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") |
| #elif IS_IN (librt) |
| # define LIBC_CANCEL_ASYNC() \ |
| __librt_enable_asynccancel () |
| # define LIBC_CANCEL_RESET(val) \ |
| __librt_disable_asynccancel (val) |
| # define LIBC_CANCEL_HANDLED() \ |
| __asm (".globl " __SYMBOL_PREFIX "__librt_enable_asynccancel"); \ |
| __asm (".globl " __SYMBOL_PREFIX "__librt_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 |
| |
| |
| /* 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; |
| |
| /* Make all threads's stacks executable. */ |
| extern int __make_stacks_executable (void **stack_endp) |
| internal_function attribute_hidden; |
| |
| /* longjmp handling. */ |
| extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe); |
| #if IS_IN (libpthread) |
| hidden_proto (__pthread_cleanup_upto) |
| #endif |
| |
| |
| /* 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 either if more than one thread runs or ran, |
| or if a single-threaded process is trying to cancel itself. See |
| nptl/descr.h for more context on the single-threaded process case. */ |
| extern int __pthread_multiple_threads attribute_hidden; |
| /* Pointer to the corresponding variable in libc. */ |
| extern int *__libc_multiple_threads_ptr attribute_hidden; |
| #endif |
| |
| /* Find a thread given its TID. */ |
| extern struct pthread *__find_thread_by_id (pid_t tid) attribute_hidden |
| #ifdef SHARED |
| ; |
| #else |
| weak_function; |
| #define __find_thread_by_id(tid) \ |
| (__find_thread_by_id ? (__find_thread_by_id) (tid) : (struct pthread *) NULL) |
| #endif |
| |
| extern void __pthread_init_static_tls (struct link_map *) attribute_hidden; |
| |
| extern size_t __pthread_get_minstack (const pthread_attr_t *attr); |
| |
| /* 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_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_cond_lock (pthread_mutex_t *__mutex) |
| attribute_hidden internal_function; |
| extern void __pthread_mutex_cond_lock_adjust (pthread_mutex_t *__mutex) |
| attribute_hidden internal_function; |
| extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex); |
| extern int __pthread_mutex_unlock_usercnt (pthread_mutex_t *__mutex, |
| int __decr) |
| attribute_hidden internal_function; |
| 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_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_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 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_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) __attribute__ ((__noreturn__)); |
| 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; |
| |
| #if IS_IN (libpthread) |
| hidden_proto (__pthread_mutex_init) |
| hidden_proto (__pthread_mutex_destroy) |
| hidden_proto (__pthread_mutex_lock) |
| hidden_proto (__pthread_mutex_unlock) |
| hidden_proto (__pthread_rwlock_rdlock) |
| hidden_proto (__pthread_rwlock_wrlock) |
| hidden_proto (__pthread_rwlock_unlock) |
| hidden_proto (__pthread_key_create) |
| hidden_proto (__pthread_getspecific) |
| hidden_proto (__pthread_setspecific) |
| hidden_proto (__pthread_once) |
| hidden_proto (__pthread_setcancelstate) |
| #endif |
| |
| 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); |
| |
| extern int __pthread_getaffinity_np (pthread_t th, size_t cpusetsize, |
| cpu_set_t *cpuset); |
| |
| /* 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; |
| |
| |
| /* The two functions are in librt.so and not exported. */ |
| extern int __librt_enable_asynccancel (void) attribute_hidden; |
| extern void __librt_disable_asynccancel (int oldtype) |
| internal_function attribute_hidden; |
| |
| #if 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; |
| |
| /* Replace cleanup macros defined in <pthread.h> with internal |
| versions that don't depend on unwind info and better support |
| cancellation. */ |
| # 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); |
| |
| extern void __nptl_deallocate_tsd (void) attribute_hidden; |
| |
| extern void __nptl_setxid_error (struct xid_command *cmdp, int error) |
| attribute_hidden; |
| extern int __nptl_setxid (struct xid_command *cmdp) attribute_hidden; |
| #ifndef SHARED |
| extern void __nptl_set_robust (struct pthread *self); |
| #endif |
| |
| extern void __free_stacks (size_t limit) attribute_hidden; |
| |
| extern void __wait_lookup_done (void) attribute_hidden; |
| |
| #ifdef SHARED |
| # define PTHREAD_STATIC_FN_REQUIRE(name) |
| #else |
| # define PTHREAD_STATIC_FN_REQUIRE(name) __asm (".globl " #name); |
| #endif |
| |
| /* Test if the mutex is suitable for the FUTEX_WAIT_REQUEUE_PI operation. */ |
| #if (defined lll_futex_wait_requeue_pi \ |
| && defined __ASSUME_REQUEUE_PI) |
| # define USE_REQUEUE_PI(mut) \ |
| ((mut) && (mut) != (void *) ~0l \ |
| && (((mut)->__data.__kind \ |
| & (PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_NORMAL_NP)) \ |
| == PTHREAD_MUTEX_PRIO_INHERIT_NP)) |
| #else |
| # define USE_REQUEUE_PI(mut) 0 |
| #endif |
| |
| /* Returns 0 if POL is a valid scheduling policy. */ |
| static inline int |
| check_sched_policy_attr (int pol) |
| { |
| if (pol == SCHED_OTHER || pol == SCHED_FIFO || pol == SCHED_RR) |
| return 0; |
| |
| return EINVAL; |
| } |
| |
| /* Returns 0 if PR is within the accepted range of priority values for |
| the scheduling policy POL or EINVAL otherwise. */ |
| static inline int |
| check_sched_priority_attr (int pr, int pol) |
| { |
| int min = __sched_get_priority_min (pol); |
| int max = __sched_get_priority_max (pol); |
| |
| if (min >= 0 && max >= 0 && pr >= min && pr <= max) |
| return 0; |
| |
| return EINVAL; |
| } |
| |
| /* Returns 0 if ST is a valid stack size for a thread stack and EINVAL |
| otherwise. */ |
| static inline int |
| check_stacksize_attr (size_t st) |
| { |
| if (st >= PTHREAD_STACK_MIN) |
| return 0; |
| |
| return EINVAL; |
| } |
| |
| #endif /* pthreadP.h */ |