8495e8b1e9
(or loading a dso linked to libthr.so into process which was not linked against threading library). - Remove libthr interposers of the libc functions, including __error(). Instead, functions calls are indirected through the interposing table, similar to how pthread stubs in libc are already done. Libc by default points either to syscall trampolines or to existing libc implementations. On libthr load, libthr rewrites the pointers to the cancellable implementations already in libthr. The interposition table is separate from pthreads stubs indirection table to not pull pthreads stubs into static binaries. - Postpone the malloc(3) internal mutexes initialization until libthr is loaded. This avoids recursion between calloc(3) and static pthread_mutex_t initialization. - Reinstall signal handlers with wrapper on libthr load. The _rtld_is_dlopened(3) is used to avoid useless calls to sigaction(2) when libthr is statically referenced from the main binary. In the process, fix openat(2), swapcontext(2) and setcontext(2) interposing. The libc symbols were exported at different versions than libthr interposers. Export both libc and libthr versions from libc now, with default set to the higher version from libthr. Remove unused and disconnected swapcontext(3) userspace implementation from libc/gen. No objections from: deischen Tested by: pho, antoine (exp-run) (previous versions) Sponsored by: The FreeBSD Foundation MFC after: 1 week
320 lines
7.5 KiB
Plaintext
320 lines
7.5 KiB
Plaintext
/*
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* $FreeBSD$
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*/
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/*
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* Use the same naming scheme as libc.
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*/
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FBSD_1.0 {
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pthread_atfork;
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pthread_barrier_destroy;
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pthread_barrier_init;
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pthread_barrier_wait;
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pthread_barrierattr_destroy;
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pthread_barrierattr_getpshared;
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pthread_barrierattr_init;
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pthread_barrierattr_setpshared;
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pthread_attr_destroy;
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pthread_attr_get_np;
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pthread_attr_getdetachstate;
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pthread_attr_getguardsize;
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pthread_attr_getinheritsched;
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pthread_attr_getschedparam;
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pthread_attr_getschedpolicy;
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pthread_attr_getscope;
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pthread_attr_getstack;
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pthread_attr_getstackaddr;
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pthread_attr_getstacksize;
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pthread_attr_init;
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pthread_attr_setcreatesuspend_np;
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pthread_attr_setdetachstate;
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pthread_attr_setguardsize;
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pthread_attr_setinheritsched;
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pthread_attr_setschedparam;
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pthread_attr_setschedpolicy;
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pthread_attr_setscope;
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pthread_attr_setstack;
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pthread_attr_setstackaddr;
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pthread_attr_setstacksize;
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pthread_cancel;
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pthread_cleanup_pop;
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pthread_cleanup_push;
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pthread_cond_broadcast;
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pthread_cond_destroy;
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pthread_cond_init;
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pthread_cond_signal;
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pthread_cond_timedwait;
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pthread_cond_wait;
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pthread_condattr_destroy;
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pthread_condattr_getclock;
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pthread_condattr_getpshared;
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pthread_condattr_init;
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pthread_condattr_setclock;
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pthread_condattr_setpshared;
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pthread_create;
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pthread_detach;
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pthread_equal;
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pthread_exit;
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pthread_getconcurrency;
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pthread_getprio;
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pthread_getschedparam;
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pthread_getspecific;
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pthread_join;
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pthread_key_create;
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pthread_key_delete;
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pthread_kill;
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pthread_main_np;
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pthread_multi_np;
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pthread_mutex_destroy;
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pthread_mutex_getprioceiling;
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pthread_mutex_init;
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pthread_mutex_lock;
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pthread_mutex_setprioceiling;
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pthread_mutex_timedlock;
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pthread_mutex_trylock;
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pthread_mutex_unlock;
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pthread_mutexattr_destroy;
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pthread_mutexattr_getkind_np;
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pthread_mutexattr_getprioceiling;
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pthread_mutexattr_getpshared;
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pthread_mutexattr_getprotocol;
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pthread_mutexattr_gettype;
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pthread_mutexattr_init;
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pthread_mutexattr_setkind_np;
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pthread_mutexattr_setprioceiling;
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pthread_mutexattr_setprotocol;
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pthread_mutexattr_setpshared;
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pthread_mutexattr_settype;
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pthread_once;
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pthread_resume_all_np;
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pthread_resume_np;
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pthread_rwlock_destroy;
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pthread_rwlock_init;
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pthread_rwlock_rdlock;
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pthread_rwlock_timedrdlock;
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pthread_rwlock_timedwrlock;
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pthread_rwlock_tryrdlock;
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pthread_rwlock_trywrlock;
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pthread_rwlock_unlock;
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pthread_rwlock_wrlock;
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pthread_rwlockattr_destroy;
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pthread_rwlockattr_getpshared;
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pthread_rwlockattr_init;
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pthread_rwlockattr_setpshared;
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pthread_set_name_np;
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pthread_self;
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pthread_setcancelstate;
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pthread_setcanceltype;
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pthread_setconcurrency;
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pthread_setprio;
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pthread_setschedparam;
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pthread_setspecific;
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pthread_sigmask;
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pthread_single_np;
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pthread_spin_destroy;
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pthread_spin_init;
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pthread_spin_lock;
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pthread_spin_trylock;
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pthread_spin_unlock;
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pthread_suspend_all_np;
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pthread_suspend_np;
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pthread_switch_add_np;
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pthread_switch_delete_np;
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pthread_testcancel;
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pthread_timedjoin_np;
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pthread_yield;
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};
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/*
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* List the private interfaces reserved for use in FreeBSD libraries.
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* These are not part of our application ABI.
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*/
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FBSDprivate_1.0 {
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__pthread_cond_timedwait;
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__pthread_cond_wait;
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__pthread_cxa_finalize;
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__pthread_mutex_init;
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__pthread_mutex_lock;
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__pthread_mutex_timedlock;
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__pthread_mutex_trylock;
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_pthread_atfork;
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_pthread_barrier_destroy;
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_pthread_barrier_init;
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_pthread_barrier_wait;
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_pthread_barrierattr_destroy;
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_pthread_barrierattr_getpshared;
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_pthread_barrierattr_init;
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_pthread_barrierattr_setpshared;
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_pthread_attr_destroy;
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_pthread_attr_get_np;
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_pthread_attr_getaffinity_np;
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_pthread_attr_getdetachstate;
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_pthread_attr_getguardsize;
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_pthread_attr_getinheritsched;
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_pthread_attr_getschedparam;
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_pthread_attr_getschedpolicy;
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_pthread_attr_getscope;
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_pthread_attr_getstack;
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_pthread_attr_getstackaddr;
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_pthread_attr_getstacksize;
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_pthread_attr_init;
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_pthread_attr_setaffinity_np;
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_pthread_attr_setcreatesuspend_np;
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_pthread_attr_setdetachstate;
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_pthread_attr_setguardsize;
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_pthread_attr_setinheritsched;
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_pthread_attr_setschedparam;
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_pthread_attr_setschedpolicy;
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_pthread_attr_setscope;
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_pthread_attr_setstack;
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_pthread_attr_setstackaddr;
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_pthread_attr_setstacksize;
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_pthread_cancel;
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_pthread_cancel_enter;
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_pthread_cancel_leave;
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_pthread_cleanup_pop;
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_pthread_cleanup_push;
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_pthread_cond_broadcast;
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_pthread_cond_destroy;
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_pthread_cond_init;
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_pthread_cond_signal;
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_pthread_cond_timedwait;
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_pthread_cond_wait;
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_pthread_condattr_destroy;
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_pthread_condattr_getclock;
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_pthread_condattr_getpshared;
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_pthread_condattr_init;
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_pthread_condattr_setclock;
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_pthread_condattr_setpshared;
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_pthread_create;
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_pthread_detach;
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_pthread_equal;
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_pthread_exit;
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_pthread_getaffinity_np;
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_pthread_getconcurrency;
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_pthread_getcpuclockid;
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_pthread_getprio;
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_pthread_getschedparam;
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_pthread_getspecific;
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_pthread_getthreadid_np;
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_pthread_join;
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_pthread_key_create;
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_pthread_key_delete;
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_pthread_kill;
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_pthread_main_np;
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_pthread_multi_np;
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_pthread_mutex_destroy;
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_pthread_mutex_getprioceiling;
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_pthread_mutex_getspinloops_np;
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_pthread_mutex_getyieldloops_np;
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_pthread_mutex_init;
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_pthread_mutex_init_calloc_cb;
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_pthread_mutex_isowned_np;
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_pthread_mutex_lock;
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_pthread_mutex_setprioceiling;
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_pthread_mutex_setspinloops_np;
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_pthread_mutex_setyieldloops_np;
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_pthread_mutex_timedlock;
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_pthread_mutex_trylock;
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_pthread_mutex_unlock;
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_pthread_mutexattr_destroy;
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_pthread_mutexattr_getkind_np;
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_pthread_mutexattr_getprioceiling;
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_pthread_mutexattr_getprotocol;
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_pthread_mutexattr_getpshared;
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_pthread_mutexattr_gettype;
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_pthread_mutexattr_init;
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_pthread_mutexattr_setkind_np;
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_pthread_mutexattr_setprioceiling;
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_pthread_mutexattr_setprotocol;
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_pthread_mutexattr_setpshared;
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_pthread_mutexattr_settype;
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_pthread_once;
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_pthread_resume_all_np;
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_pthread_resume_np;
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_pthread_rwlock_destroy;
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_pthread_rwlock_init;
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_pthread_rwlock_rdlock;
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_pthread_rwlock_timedrdlock;
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_pthread_rwlock_timedwrlock;
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_pthread_rwlock_tryrdlock;
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_pthread_rwlock_trywrlock;
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_pthread_rwlock_unlock;
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_pthread_rwlock_wrlock;
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_pthread_rwlockattr_destroy;
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_pthread_rwlockattr_getpshared;
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_pthread_rwlockattr_init;
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_pthread_rwlockattr_setpshared;
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_pthread_self;
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_pthread_set_name_np;
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_pthread_setaffinity_np;
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_pthread_setcancelstate;
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_pthread_setcanceltype;
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_pthread_setconcurrency;
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_pthread_setprio;
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_pthread_setschedparam;
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_pthread_setspecific;
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_pthread_sigmask;
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_pthread_single_np;
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_pthread_spin_destroy;
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_pthread_spin_init;
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_pthread_spin_lock;
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_pthread_spin_trylock;
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_pthread_spin_unlock;
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_pthread_suspend_all_np;
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_pthread_suspend_np;
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_pthread_switch_add_np;
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_pthread_switch_delete_np;
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_pthread_testcancel;
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_pthread_timedjoin_np;
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_pthread_yield;
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/* Debugger needs these. */
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_libthr_debug;
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_thread_active_threads;
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_thread_bp_create;
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_thread_bp_death;
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_thread_event_mask;
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_thread_keytable;
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_thread_last_event;
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_thread_list;
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_thread_max_keys;
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_thread_off_attr_flags;
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_thread_off_dtv;
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_thread_off_event_buf;
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_thread_off_event_mask;
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_thread_off_key_allocated;
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_thread_off_key_destructor;
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_thread_off_linkmap;
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_thread_off_next;
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_thread_off_report_events;
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_thread_off_state;
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_thread_off_tcb;
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_thread_off_tid;
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_thread_off_tlsindex;
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_thread_size_key;
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_thread_state_running;
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_thread_state_zoombie;
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__pthread_map_stacks_exec;
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};
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FBSD_1.1 {
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__pthread_cleanup_pop_imp;
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__pthread_cleanup_push_imp;
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pthread_attr_getaffinity_np;
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pthread_attr_setaffinity_np;
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pthread_getaffinity_np;
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pthread_getcpuclockid;
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pthread_setaffinity_np;
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pthread_mutex_getspinloops_np;
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pthread_mutex_getyieldloops_np;
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pthread_mutex_isowned_np;
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pthread_mutex_setspinloops_np;
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pthread_mutex_setyieldloops_np;
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};
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FBSD_1.2 {
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pthread_getthreadid_np;
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};
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