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d40ac01cbb
The recursive lock used on abort does not synchronize with a new process creation (either by fork-like interfaces or posix_spawn ones), nor it is reinitialized after fork(). Also, the SIGABRT unblock before raise() shows another race condition, where a fork or posix_spawn() call by another thread, just after the recursive lock release and before the SIGABRT signal, might create programs with a non-expected signal mask. With the default option (without POSIX_SPAWN_SETSIGDEF), the process can see SIG_DFL for SIGABRT, where it should be SIG_IGN. To fix the AS-safe, raise() does not change the process signal mask, and an AS-safe lock is used if a SIGABRT is installed or the process is blocked or ignored. With the signal mask change removal, there is no need to use a recursive loc. The lock is also taken on both _Fork() and posix_spawn(), to avoid the spawn process to see the abort handler as SIG_DFL. A read-write lock is used to avoid serialize _Fork and posix_spawn execution. Both sigaction (SIGABRT) and abort() requires to lock as writer (since both change the disposition). The fallback is also simplified: there is no need to use a loop of ABORT_INSTRUCTION after _exit() (if the syscall does not terminate the process, the system is broken). The proposed fix changes how setjmp works on a SIGABRT handler, where glibc does not save the signal mask. So usage like the below will now always abort. static volatile int chk_fail_ok; static jmp_buf chk_fail_buf; static void handler (int sig) { if (chk_fail_ok) { chk_fail_ok = 0; longjmp (chk_fail_buf, 1); } else _exit (127); } [...] signal (SIGABRT, handler); [....] chk_fail_ok = 1; if (! setjmp (chk_fail_buf)) { // Something that can calls abort, like a failed fortify function. chk_fail_ok = 0; printf ("FAIL\n"); } Such cases will need to use sigsetjmp instead. The _dl_start_profile calls sigaction through _profil, and to avoid pulling abort() on loader the call is replaced with __libc_sigaction. Checked on x86_64-linux-gnu and aarch64-linux-gnu. Reviewed-by: DJ Delorie <dj@redhat.com>
741 lines
29 KiB
C
741 lines
29 KiB
C
/* Copyright (C) 2002-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _PTHREADP_H
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#define _PTHREADP_H 1
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#define __PTHREAD_NPTL
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#include <pthread.h>
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#include <setjmp.h>
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#include <stdbool.h>
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#include <sys/syscall.h>
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#include <nptl/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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#include <atomic.h>
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#include <kernel-features.h>
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#include <errno.h>
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#include <internal-signals.h>
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#include <pthread_mutex_backoff.h>
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#include "pthread_mutex_conf.h"
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/* Atomic operations on TLS memory. */
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#ifndef THREAD_ATOMIC_CMPXCHG_VAL
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# define THREAD_ATOMIC_CMPXCHG_VAL(descr, member, new, old) \
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atomic_compare_and_exchange_val_acq (&(descr)->member, new, old)
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#endif
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static inline short max_adaptive_count (void)
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{
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return __mutex_aconf.spin_count;
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}
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/* Magic cookie representing robust mutex with dead owner. */
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#define PTHREAD_MUTEX_INCONSISTENT INT_MAX
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/* Magic cookie representing not recoverable robust mutex. */
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#define PTHREAD_MUTEX_NOTRECOVERABLE (INT_MAX - 1)
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/* Internal mutex type value. */
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enum
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{
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PTHREAD_MUTEX_KIND_MASK_NP = 3,
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PTHREAD_MUTEX_ELISION_NP = 256,
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PTHREAD_MUTEX_NO_ELISION_NP = 512,
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PTHREAD_MUTEX_ROBUST_NORMAL_NP = 16,
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PTHREAD_MUTEX_ROBUST_RECURSIVE_NP
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= PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_RECURSIVE_NP,
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PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP
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= PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_ERRORCHECK_NP,
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PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP
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= PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_ADAPTIVE_NP,
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PTHREAD_MUTEX_PRIO_INHERIT_NP = 32,
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PTHREAD_MUTEX_PI_NORMAL_NP
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= PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_NORMAL,
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PTHREAD_MUTEX_PI_RECURSIVE_NP
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= PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_RECURSIVE_NP,
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PTHREAD_MUTEX_PI_ERRORCHECK_NP
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= PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ERRORCHECK_NP,
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PTHREAD_MUTEX_PI_ADAPTIVE_NP
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= PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ADAPTIVE_NP,
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PTHREAD_MUTEX_PI_ROBUST_NORMAL_NP
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= PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_NORMAL_NP,
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PTHREAD_MUTEX_PI_ROBUST_RECURSIVE_NP
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= PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_RECURSIVE_NP,
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PTHREAD_MUTEX_PI_ROBUST_ERRORCHECK_NP
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= PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP,
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PTHREAD_MUTEX_PI_ROBUST_ADAPTIVE_NP
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= PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP,
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PTHREAD_MUTEX_PRIO_PROTECT_NP = 64,
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PTHREAD_MUTEX_PP_NORMAL_NP
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= PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_NORMAL,
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PTHREAD_MUTEX_PP_RECURSIVE_NP
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= PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_RECURSIVE_NP,
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PTHREAD_MUTEX_PP_ERRORCHECK_NP
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= PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_ERRORCHECK_NP,
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PTHREAD_MUTEX_PP_ADAPTIVE_NP
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= PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_ADAPTIVE_NP,
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PTHREAD_MUTEX_ELISION_FLAGS_NP
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= PTHREAD_MUTEX_ELISION_NP | PTHREAD_MUTEX_NO_ELISION_NP,
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PTHREAD_MUTEX_TIMED_ELISION_NP =
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PTHREAD_MUTEX_TIMED_NP | PTHREAD_MUTEX_ELISION_NP,
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PTHREAD_MUTEX_TIMED_NO_ELISION_NP =
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PTHREAD_MUTEX_TIMED_NP | PTHREAD_MUTEX_NO_ELISION_NP,
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};
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#define PTHREAD_MUTEX_PSHARED_BIT 128
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/* See concurrency notes regarding __kind in struct __pthread_mutex_s
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in sysdeps/nptl/bits/thread-shared-types.h. */
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#define PTHREAD_MUTEX_TYPE(m) \
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(atomic_load_relaxed (&((m)->__data.__kind)) & 127)
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/* Don't include NO_ELISION, as that type is always the same
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as the underlying lock type. */
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#define PTHREAD_MUTEX_TYPE_ELISION(m) \
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(atomic_load_relaxed (&((m)->__data.__kind)) \
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& (127 | PTHREAD_MUTEX_ELISION_NP))
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#if LLL_PRIVATE == 0 && LLL_SHARED == 128
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# define PTHREAD_MUTEX_PSHARED(m) \
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(atomic_load_relaxed (&((m)->__data.__kind)) & 128)
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#else
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# define PTHREAD_MUTEX_PSHARED(m) \
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((atomic_load_relaxed (&((m)->__data.__kind)) & 128) \
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? LLL_SHARED : LLL_PRIVATE)
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#endif
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/* The kernel when waking robust mutexes on exit never uses
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FUTEX_PRIVATE_FLAG FUTEX_WAKE. */
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#define PTHREAD_ROBUST_MUTEX_PSHARED(m) LLL_SHARED
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/* Ceiling in __data.__lock. __data.__lock is signed, so don't
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use the MSB bit in there, but in the mask also include that bit,
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so that the compiler can optimize & PTHREAD_MUTEX_PRIO_CEILING_MASK
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masking if the value is then shifted down by
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PTHREAD_MUTEX_PRIO_CEILING_SHIFT. */
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#define PTHREAD_MUTEX_PRIO_CEILING_SHIFT 19
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#define PTHREAD_MUTEX_PRIO_CEILING_MASK 0xfff80000
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/* Flags in mutex attr. */
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#define PTHREAD_MUTEXATTR_PROTOCOL_SHIFT 28
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#define PTHREAD_MUTEXATTR_PROTOCOL_MASK 0x30000000
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#define PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT 12
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#define PTHREAD_MUTEXATTR_PRIO_CEILING_MASK 0x00fff000
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#define PTHREAD_MUTEXATTR_FLAG_ROBUST 0x40000000
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#define PTHREAD_MUTEXATTR_FLAG_PSHARED 0x80000000
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#define PTHREAD_MUTEXATTR_FLAG_BITS \
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(PTHREAD_MUTEXATTR_FLAG_ROBUST | PTHREAD_MUTEXATTR_FLAG_PSHARED \
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| PTHREAD_MUTEXATTR_PROTOCOL_MASK | PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
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/* For the following, see pthread_rwlock_common.c. */
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#define PTHREAD_RWLOCK_WRPHASE 1
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#define PTHREAD_RWLOCK_WRLOCKED 2
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#define PTHREAD_RWLOCK_RWAITING 4
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#define PTHREAD_RWLOCK_READER_SHIFT 3
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#define PTHREAD_RWLOCK_READER_OVERFLOW ((unsigned int) 1 \
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<< (sizeof (unsigned int) * 8 - 1))
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#define PTHREAD_RWLOCK_WRHANDOVER ((unsigned int) 1 \
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<< (sizeof (unsigned int) * 8 - 1))
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#define PTHREAD_RWLOCK_FUTEX_USED 2
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/* Bits used in robust mutex implementation. */
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#define FUTEX_WAITERS 0x80000000
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#define FUTEX_OWNER_DIED 0x40000000
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#define FUTEX_TID_MASK 0x3fffffff
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/* pthread_once definitions. See __pthread_once for how these are used. */
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#define __PTHREAD_ONCE_INPROGRESS 1
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#define __PTHREAD_ONCE_DONE 2
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#define __PTHREAD_ONCE_FORK_GEN_INCR 4
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/* Attribute to indicate thread creation was issued from C11 thrd_create. */
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#define ATTR_C11_THREAD ((void*)(uintptr_t)-1)
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/* Condition variable definitions. See __pthread_cond_wait_common.
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Need to be defined here so there is one place from which
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nptl_lock_constants can grab them. */
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#define __PTHREAD_COND_CLOCK_MONOTONIC_MASK 2
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#define __PTHREAD_COND_SHARED_MASK 1
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/* Internal variables. */
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/* Default pthread attributes. */
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extern union pthread_attr_transparent __default_pthread_attr;
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libc_hidden_proto (__default_pthread_attr)
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extern int __default_pthread_attr_lock;
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libc_hidden_proto (__default_pthread_attr_lock)
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/* Called from __libc_freeres to deallocate the default attribute. */
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extern void __default_pthread_attr_freeres (void) attribute_hidden;
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/* Attribute handling. */
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extern struct pthread_attr *__attr_list attribute_hidden;
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extern int __attr_list_lock 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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libc_hidden_proto (__pthread_keys)
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/* Number of threads running. */
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extern unsigned int __nptl_nthreads;
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libc_hidden_proto (__nptl_nthreads)
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#ifndef __ASSUME_SET_ROBUST_LIST
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/* True if the set_robust_list system call works. Initialized in
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__tls_init_tp. */
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extern bool __nptl_set_robust_list_avail;
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rtld_hidden_proto (__nptl_set_robust_list_avail)
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#endif
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/* Thread Priority Protection. */
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extern int __sched_fifo_min_prio;
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libc_hidden_proto (__sched_fifo_min_prio)
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extern int __sched_fifo_max_prio;
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libc_hidden_proto (__sched_fifo_max_prio)
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extern void __init_sched_fifo_prio (void);
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libc_hidden_proto (__init_sched_fifo_prio)
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extern int __pthread_tpp_change_priority (int prev_prio, int new_prio);
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libc_hidden_proto (__pthread_tpp_change_priority)
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extern int __pthread_current_priority (void);
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libc_hidden_proto (__pthread_current_priority)
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/* This will not catch all invalid descriptors but is better than
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nothing. And if the test triggers the thread descriptor is
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guaranteed to be invalid. */
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#define INVALID_TD_P(pd) __builtin_expect ((pd)->tid <= 0, 0)
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#define INVALID_NOT_TERMINATED_TD_P(pd) __builtin_expect ((pd)->tid < 0, 0)
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extern void __pthread_unwind (__pthread_unwind_buf_t *__buf)
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__cleanup_fct_attribute __attribute ((__noreturn__))
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#if !defined SHARED && !IS_IN (libpthread)
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weak_function
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#endif
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;
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libc_hidden_proto (__pthread_unwind)
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extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf)
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__cleanup_fct_attribute __attribute ((__noreturn__))
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#ifndef SHARED
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weak_function
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#endif
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;
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/* NB: No hidden proto for __pthread_unwind_next: inside glibc, the
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legacy unwinding mechanism is used. */
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extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf)
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__cleanup_fct_attribute;
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libc_hidden_proto (__pthread_register_cancel)
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extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf)
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__cleanup_fct_attribute;
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libc_hidden_proto (__pthread_unregister_cancel)
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/* Called when a thread reacts on a cancellation request. */
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static inline void
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__attribute ((noreturn, always_inline))
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__do_cancel (void *result)
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{
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struct pthread *self = THREAD_SELF;
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self->result = result;
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/* Make sure we get no more cancellations. */
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atomic_fetch_or_relaxed (&self->cancelhandling, EXITING_BITMASK);
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__pthread_unwind ((__pthread_unwind_buf_t *)
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THREAD_GETMEM (self, cleanup_jmp_buf));
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}
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extern long int __syscall_cancel_arch (volatile int *, __syscall_arg_t nr,
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__syscall_arg_t arg1, __syscall_arg_t arg2, __syscall_arg_t arg3,
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__syscall_arg_t arg4, __syscall_arg_t arg5, __syscall_arg_t arg6
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__SYSCALL_CANCEL7_ARCH_ARG_DEF) attribute_hidden;
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extern _Noreturn void __syscall_do_cancel (void) attribute_hidden;
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/* Internal prototypes. */
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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 __nptl_free_tcb (struct pthread *pd);
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libc_hidden_proto (__nptl_free_tcb)
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/* Change the permissions of a thread stack. Called from
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_dl_make_stacks_executable and pthread_create. */
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int
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__nptl_change_stack_perm (struct pthread *pd);
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rtld_hidden_proto (__nptl_change_stack_perm)
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/* longjmp handling. */
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extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe);
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libc_hidden_proto (__pthread_cleanup_upto)
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/* Functions with versioned interfaces. */
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extern int __pthread_create (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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libc_hidden_proto (__pthread_create)
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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 (pthread_attr_t *attr);
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libc_hidden_proto (__pthread_attr_init)
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extern int __pthread_attr_init_2_0 (pthread_attr_t *attr);
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/* Part of the legacy thread events interface (which has been
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superseded by PTRACE_O_TRACECLONE). This can be set by the
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debugger before initialization is complete. */
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extern bool __nptl_initial_report_events;
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rtld_hidden_proto (__nptl_initial_report_events)
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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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libc_hidden_proto (__nptl_create_event)
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libc_hidden_proto (__nptl_death_event)
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/* The fork generation counter, defined in libpthread. */
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extern unsigned long int __fork_generation attribute_hidden;
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/* Pointer to the fork generation counter in the thread library. */
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extern unsigned long int *__fork_generation_pointer attribute_hidden;
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extern size_t __pthread_get_minstack (const pthread_attr_t *attr);
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libc_hidden_proto (__pthread_get_minstack)
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/* Namespace save aliases. */
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extern int __pthread_getschedparam (pthread_t thread_id, int *policy,
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struct sched_param *param);
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libc_hidden_proto (__pthread_getschedparam)
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extern int __pthread_setschedparam (pthread_t thread_id, int policy,
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const struct sched_param *param);
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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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libc_hidden_proto (__pthread_mutex_init)
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extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
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libc_hidden_proto (__pthread_mutex_destroy)
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extern int __pthread_mutex_trylock (pthread_mutex_t *_mutex);
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libc_hidden_proto (__pthread_mutex_trylock)
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extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
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libc_hidden_proto (__pthread_mutex_lock)
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extern int __pthread_mutex_timedlock (pthread_mutex_t *__mutex,
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const struct timespec *__abstime);
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extern int __pthread_mutex_cond_lock (pthread_mutex_t *__mutex)
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attribute_hidden;
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extern void __pthread_mutex_cond_lock_adjust (pthread_mutex_t *__mutex)
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attribute_hidden;
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extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
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libc_hidden_proto (__pthread_mutex_unlock)
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extern int __pthread_mutex_unlock_usercnt (pthread_mutex_t *__mutex,
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int __decr);
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libc_hidden_proto (__pthread_mutex_unlock_usercnt)
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extern int __pthread_mutexattr_init (pthread_mutexattr_t *attr);
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libc_hidden_proto (__pthread_mutexattr_init)
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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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libc_hidden_proto (__pthread_mutexattr_settype)
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extern int __pthread_attr_destroy (pthread_attr_t *attr);
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libc_hidden_proto (__pthread_attr_destroy)
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|
extern int __pthread_attr_getdetachstate (const pthread_attr_t *attr,
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int *detachstate);
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extern int __pthread_attr_setdetachstate (pthread_attr_t *attr,
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int detachstate);
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extern int __pthread_attr_getinheritsched (const pthread_attr_t *attr,
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int *inherit);
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extern int __pthread_attr_setinheritsched (pthread_attr_t *attr, int inherit);
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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);
|
|
int __pthread_attr_setaffinity_np (pthread_attr_t *, size_t, const cpu_set_t *);
|
|
libc_hidden_proto (__pthread_attr_setaffinity_np)
|
|
extern __typeof (pthread_getattr_default_np) __pthread_getattr_default_np;
|
|
libc_hidden_proto (__pthread_getattr_default_np)
|
|
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);
|
|
libc_hidden_proto (__pthread_rwlock_rdlock)
|
|
extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
|
|
extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
|
|
libc_hidden_proto (__pthread_rwlock_wrlock)
|
|
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);
|
|
libc_hidden_proto (__pthread_cond_broadcast)
|
|
extern int __pthread_cond_destroy (pthread_cond_t *cond);
|
|
libc_hidden_proto (__pthread_cond_destroy)
|
|
extern int __pthread_cond_init (pthread_cond_t *cond,
|
|
const pthread_condattr_t *cond_attr);
|
|
libc_hidden_proto (__pthread_cond_init)
|
|
extern int __pthread_cond_signal (pthread_cond_t *cond);
|
|
libc_hidden_proto (__pthread_cond_signal)
|
|
extern int __pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex);
|
|
libc_hidden_proto (__pthread_cond_wait)
|
|
|
|
#if __TIMESIZE == 64
|
|
# define __pthread_clockjoin_np64 __pthread_clockjoin_np
|
|
# define __pthread_timedjoin_np64 __pthread_timedjoin_np
|
|
# define __pthread_cond_timedwait64 __pthread_cond_timedwait
|
|
# define __pthread_cond_clockwait64 __pthread_cond_clockwait
|
|
# define __pthread_rwlock_clockrdlock64 __pthread_rwlock_clockrdlock
|
|
# define __pthread_rwlock_clockwrlock64 __pthread_rwlock_clockwrlock
|
|
# define __pthread_rwlock_timedrdlock64 __pthread_rwlock_timedrdlock
|
|
# define __pthread_rwlock_timedwrlock64 __pthread_rwlock_timedwrlock
|
|
# define __pthread_mutex_clocklock64 __pthread_mutex_clocklock
|
|
# define __pthread_mutex_timedlock64 __pthread_mutex_timedlock
|
|
#else
|
|
extern int __pthread_clockjoin_np64 (pthread_t threadid, void **thread_return,
|
|
clockid_t clockid,
|
|
const struct __timespec64 *abstime);
|
|
libc_hidden_proto (__pthread_clockjoin_np64)
|
|
extern int __pthread_timedjoin_np64 (pthread_t threadid, void **thread_return,
|
|
const struct __timespec64 *abstime);
|
|
libc_hidden_proto (__pthread_timedjoin_np64)
|
|
extern int __pthread_cond_timedwait64 (pthread_cond_t *cond,
|
|
pthread_mutex_t *mutex,
|
|
const struct __timespec64 *abstime);
|
|
libc_hidden_proto (__pthread_cond_timedwait64)
|
|
extern int __pthread_cond_clockwait64 (pthread_cond_t *cond,
|
|
pthread_mutex_t *mutex,
|
|
clockid_t clockid,
|
|
const struct __timespec64 *abstime);
|
|
libc_hidden_proto (__pthread_cond_clockwait64)
|
|
extern int __pthread_rwlock_clockrdlock64 (pthread_rwlock_t *rwlock,
|
|
clockid_t clockid,
|
|
const struct __timespec64 *abstime);
|
|
libc_hidden_proto (__pthread_rwlock_clockrdlock64)
|
|
extern int __pthread_rwlock_clockwrlock64 (pthread_rwlock_t *rwlock,
|
|
clockid_t clockid,
|
|
const struct __timespec64 *abstime);
|
|
libc_hidden_proto (__pthread_rwlock_clockwrlock64)
|
|
extern int __pthread_rwlock_timedrdlock64 (pthread_rwlock_t *rwlock,
|
|
const struct __timespec64 *abstime);
|
|
libc_hidden_proto (__pthread_rwlock_timedrdlock64)
|
|
extern int __pthread_rwlock_timedwrlock64 (pthread_rwlock_t *rwlock,
|
|
const struct __timespec64 *abstime);
|
|
libc_hidden_proto (__pthread_rwlock_timedwrlock64)
|
|
extern int __pthread_mutex_clocklock64 (pthread_mutex_t *mutex,
|
|
clockid_t clockid,
|
|
const struct __timespec64 *abstime);
|
|
libc_hidden_proto (__pthread_mutex_clocklock64)
|
|
extern int __pthread_mutex_timedlock64 (pthread_mutex_t *mutex,
|
|
const struct __timespec64 *abstime);
|
|
libc_hidden_proto (__pthread_mutex_timedlock64)
|
|
#endif
|
|
|
|
extern int __pthread_cond_timedwait (pthread_cond_t *cond,
|
|
pthread_mutex_t *mutex,
|
|
const struct timespec *abstime);
|
|
libc_hidden_proto (__pthread_cond_timedwait)
|
|
extern int __pthread_cond_clockwait (pthread_cond_t *cond,
|
|
pthread_mutex_t *mutex,
|
|
clockid_t clockid,
|
|
const struct timespec *abstime)
|
|
__nonnull ((1, 2, 4));
|
|
libc_hidden_proto (__pthread_cond_clockwait)
|
|
|
|
extern int __pthread_mutex_clocklock (pthread_mutex_t *mutex,
|
|
clockid_t clockid,
|
|
const struct timespec *abstime);
|
|
libc_hidden_proto (__pthread_mutex_clocklock)
|
|
extern int __pthread_mutex_timedlock (pthread_mutex_t *mutex,
|
|
const struct timespec *abstime);
|
|
libc_hidden_proto (__pthread_mutex_timedlock)
|
|
|
|
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 *));
|
|
libc_hidden_proto (__pthread_key_create)
|
|
extern int __pthread_key_delete (pthread_key_t key);
|
|
libc_hidden_proto (__pthread_key_delete)
|
|
extern void *__pthread_getspecific (pthread_key_t key);
|
|
libc_hidden_proto (__pthread_getspecific)
|
|
extern int __pthread_setspecific (pthread_key_t key, const void *value);
|
|
libc_hidden_proto (__pthread_setspecific)
|
|
extern int __pthread_once (pthread_once_t *once_control,
|
|
void (*init_routine) (void));
|
|
libc_hidden_proto (__pthread_once)
|
|
extern int __pthread_atfork (void (*prepare) (void), void (*parent) (void),
|
|
void (*child) (void));
|
|
libc_hidden_proto (__pthread_self)
|
|
extern int __pthread_equal (pthread_t thread1, pthread_t thread2);
|
|
extern int __pthread_detach (pthread_t th);
|
|
libc_hidden_proto (__pthread_detach)
|
|
extern int __pthread_kill (pthread_t threadid, int signo);
|
|
libc_hidden_proto (__pthread_kill)
|
|
extern int __pthread_cancel (pthread_t th);
|
|
extern int __pthread_kill_internal (pthread_t threadid, int signo)
|
|
attribute_hidden;
|
|
extern int __pthread_raise_internal (int signo) attribute_hidden;
|
|
extern void __pthread_exit (void *value) __attribute__ ((__noreturn__));
|
|
libc_hidden_proto (__pthread_exit)
|
|
extern int __pthread_join (pthread_t threadid, void **thread_return);
|
|
libc_hidden_proto (__pthread_join)
|
|
extern int __pthread_setcanceltype (int type, int *oldtype);
|
|
libc_hidden_proto (__pthread_setcanceltype)
|
|
extern void __pthread_testcancel (void);
|
|
libc_hidden_proto (__pthread_testcancel)
|
|
extern int __pthread_clockjoin_ex (pthread_t, void **, clockid_t,
|
|
const struct __timespec64 *, bool)
|
|
attribute_hidden;
|
|
extern int __pthread_sigmask (int, const sigset_t *, sigset_t *);
|
|
libc_hidden_proto (__pthread_sigmask);
|
|
|
|
|
|
#if IS_IN (libpthread)
|
|
hidden_proto (__pthread_rwlock_unlock)
|
|
#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);
|
|
libc_hidden_proto (__pthread_getaffinity_np)
|
|
|
|
/* Special internal version of pthread_attr_setsigmask_np which does
|
|
not filter out internal signals from *SIGMASK. This can be used to
|
|
launch threads with internal signals blocked. */
|
|
extern int __pthread_attr_setsigmask_internal (pthread_attr_t *attr,
|
|
const sigset_t *sigmask);
|
|
libc_hidden_proto (__pthread_attr_setsigmask_internal)
|
|
|
|
extern __typeof (pthread_attr_getsigmask_np) __pthread_attr_getsigmask_np;
|
|
libc_hidden_proto (__pthread_attr_getsigmask_np)
|
|
|
|
/* Special versions which use non-exported functions. */
|
|
extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
|
|
void (*routine) (void *), void *arg);
|
|
libc_hidden_proto (__pthread_cleanup_push)
|
|
|
|
/* 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);
|
|
libc_hidden_proto (__pthread_cleanup_pop)
|
|
# undef pthread_cleanup_pop
|
|
# define pthread_cleanup_pop(execute) \
|
|
__pthread_cleanup_pop (&_buffer, (execute)); }
|
|
|
|
#if defined __EXCEPTIONS && !defined __cplusplus
|
|
/* Structure to hold the cleanup handler information. */
|
|
struct __pthread_cleanup_combined_frame
|
|
{
|
|
void (*__cancel_routine) (void *);
|
|
void *__cancel_arg;
|
|
int __do_it;
|
|
struct _pthread_cleanup_buffer __buffer;
|
|
};
|
|
|
|
/* Special cleanup macros which register cleanup both using
|
|
__pthread_cleanup_{push,pop} and using cleanup attribute. This is needed
|
|
for pthread_once, so that it supports both throwing exceptions from the
|
|
pthread_once callback (only cleanup attribute works there) and cancellation
|
|
of the thread running the callback if the callback or some routines it
|
|
calls don't have unwind information. */
|
|
|
|
static __always_inline void
|
|
__pthread_cleanup_combined_routine (struct __pthread_cleanup_combined_frame
|
|
*__frame)
|
|
{
|
|
if (__frame->__do_it)
|
|
{
|
|
__frame->__cancel_routine (__frame->__cancel_arg);
|
|
__frame->__do_it = 0;
|
|
__pthread_cleanup_pop (&__frame->__buffer, 0);
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
__pthread_cleanup_combined_routine_voidptr (void *__arg)
|
|
{
|
|
struct __pthread_cleanup_combined_frame *__frame
|
|
= (struct __pthread_cleanup_combined_frame *) __arg;
|
|
if (__frame->__do_it)
|
|
{
|
|
__frame->__cancel_routine (__frame->__cancel_arg);
|
|
__frame->__do_it = 0;
|
|
}
|
|
}
|
|
|
|
# define pthread_cleanup_combined_push(routine, arg) \
|
|
do { \
|
|
void (*__cancel_routine) (void *) = (routine); \
|
|
struct __pthread_cleanup_combined_frame __clframe \
|
|
__attribute__ ((__cleanup__ (__pthread_cleanup_combined_routine))) \
|
|
= { .__cancel_routine = __cancel_routine, .__cancel_arg = (arg), \
|
|
.__do_it = 1 }; \
|
|
__pthread_cleanup_push (&__clframe.__buffer, \
|
|
__pthread_cleanup_combined_routine_voidptr, \
|
|
&__clframe);
|
|
|
|
# define pthread_cleanup_combined_pop(execute) \
|
|
__pthread_cleanup_pop (&__clframe.__buffer, 0); \
|
|
__clframe.__do_it = 0; \
|
|
if (execute) \
|
|
__cancel_routine (__clframe.__cancel_arg); \
|
|
} while (0)
|
|
|
|
#endif /* __EXCEPTIONS && !defined __cplusplus */
|
|
|
|
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);
|
|
libc_hidden_proto (__nptl_deallocate_tsd)
|
|
|
|
void __nptl_setxid_sighandler (int sig, siginfo_t *si, void *ctx);
|
|
libc_hidden_proto (__nptl_setxid_sighandler)
|
|
extern int __nptl_setxid (struct xid_command *cmdp) attribute_hidden;
|
|
|
|
extern void __wait_lookup_done (void) attribute_hidden;
|
|
|
|
/* Allocates the extension space for ATTR. Returns an error code on
|
|
memory allocation failure, zero on success. If ATTR already has an
|
|
extension space, this function does nothing. */
|
|
int __pthread_attr_extension (struct pthread_attr *attr) attribute_hidden
|
|
__attribute_warn_unused_result__;
|
|
|
|
#ifdef SHARED
|
|
# define PTHREAD_STATIC_FN_REQUIRE(name)
|
|
#else
|
|
# define PTHREAD_STATIC_FN_REQUIRE(name) __asm (".globl " #name);
|
|
#endif
|
|
|
|
/* Make a deep copy of the attribute *SOURCE in *TARGET. *TARGET is
|
|
not assumed to have been initialized. Returns 0 on success, or a
|
|
positive error code otherwise. */
|
|
int __pthread_attr_copy (pthread_attr_t *target, const pthread_attr_t *source);
|
|
libc_hidden_proto (__pthread_attr_copy)
|
|
|
|
/* 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;
|
|
}
|
|
|
|
#define ASSERT_TYPE_SIZE(type, size) \
|
|
_Static_assert (sizeof (type) == size, \
|
|
"sizeof (" #type ") != " #size)
|
|
|
|
#define ASSERT_PTHREAD_INTERNAL_SIZE(type, internal) \
|
|
_Static_assert (sizeof ((type) { { 0 } }).__size >= sizeof (internal),\
|
|
"sizeof (" #type ".__size) < sizeof (" #internal ")")
|
|
|
|
#define ASSERT_PTHREAD_STRING(x) __STRING (x)
|
|
#define ASSERT_PTHREAD_INTERNAL_OFFSET(type, member, offset) \
|
|
_Static_assert (offsetof (type, member) == offset, \
|
|
"offset of " #member " field of " #type " != " \
|
|
ASSERT_PTHREAD_STRING (offset))
|
|
#define ASSERT_PTHREAD_INTERNAL_MEMBER_SIZE(type, member, mtype) \
|
|
_Static_assert (sizeof (((type) { 0 }).member) != 8, \
|
|
"sizeof (" #type "." #member ") != sizeof (" #mtype "))")
|
|
|
|
#endif /* pthreadP.h */
|