glibc/hurd/Versions
Agustina Arzille fb4cc8a0c2 hurd: Reimplement libc locks using mach's gsync
* hurd/Makefile (routines): Add hurdlock.
	* hurd/Versions (GLIBC_PRIVATE): Added new entry to export the above
	interface.
	(HURD_CTHREADS_0.3): Remove __libc_getspecific.
	* hurd/hurdpid.c: Include <lowlevellock.h>
	(_S_msg_proc_newids): Use lll_wait to synchronize.
	* hurd/hurdsig.c: (reauth_proc): Use __mutex_lock and __mutex_unlock.
	* hurd/setauth.c: Include <hurdlock.h>, use integer for synchronization.
	* mach/Makefile (lock-headers): Remove machine-lock.h.
	* mach/lock-intern.h: Include <lowlevellock.h> instead of
	<machine-lock.h>.
	(__spin_lock_t): New type.
	(__SPIN_LOCK_INITIALIZER): New macro.
	(__spin_lock, __spin_unlock, __spin_try_lock, __spin_lock_locked,
	__mutex_init, __mutex_lock_solid, __mutex_unlock_solid, __mutex_lock,
	__mutex_unlock, __mutex_trylock): Use lll to implement locks.
	* mach/mutex-init.c: Include <lowlevellock.h> instead of <cthreads.h>.
	(__mutex_init): Initialize with lll.
	* manual/errno.texi (EOWNERDEAD, ENOTRECOVERABLE): New errno values.
	* sysdeps/mach/Makefile: Add libmachuser as dependencies for libs
	needing lll.
	* sysdeps/mach/hurd/bits/errno.h: Regenerate.
	* sysdeps/mach/hurd/cthreads.c (__libc_getspecific): Remove function.
	* sysdeps/mach/hurd/bits/libc-lock.h: Remove file.
	* sysdeps/mach/hurd/setpgid.c: Include <lowlevellock.h>.
	(__setpgid): Use lll for synchronization.
	* sysdeps/mach/hurd/setsid.c: Likewise with __setsid.
	* sysdeps/mach/bits/libc-lock.h: Include <tls.h> and <lowlevellock.h>
	instead of <cthreads.h>.
	(_IO_lock_inexpensive): New macro
	(__libc_lock_recursive_t, __rtld_lock_recursive_t): New structures.
	(__libc_lock_self0): New declaration.
	(__libc_lock_owner_self): New macro.
	(__libc_key_t): Remove type.
	(_LIBC_LOCK_INITIALIZER): New macro.
	(__libc_lock_define_initialized, __libc_lock_init, __libc_lock_fini,
	__libc_lock_fini_recursive, __rtld_lock_fini_recursive,
	__libc_lock_lock, __libc_lock_trylock, __libc_lock_unlock,
	__libc_lock_define_initialized_recursive,
	__rtld_lock_define_initialized_recursive,
	__libc_lock_init_recursive, __libc_lock_trylock_recursive,
	__libc_lock_lock_recursive, __libc_lock_unlock_recursive,
	__rtld_lock_initialize, __rtld_lock_trylock_recursive,
	__rtld_lock_lock_recursive, __rtld_lock_unlock_recursive
	__libc_once_define, __libc_mutex_unlock): Reimplement with lll.
	(__libc_lock_define_recursive, __rtld_lock_define_recursive,
	_LIBC_LOCK_RECURSIVE_INITIALIZER, _RTLD_LOCK_RECURSIVE_INITIALIZER):
	New macros.
	Include <libc-lockP.h> to reimplement libc_key* with pthread_key*.
	* hurd/hurdlock.c: New file.
	* hurd/hurdlock.h: New file.
	* mach/lowlevellock.h: New file
2018-03-18 18:23:45 +01:00

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libc {
GLIBC_2.0 {
# necessary for the Hurd brk implementation
_end;
# variables used in macros & inline functions
__hurd_threadvar_stack_mask; __hurd_threadvar_stack_offset;
# functions used in libmachuser and libhurduser
_S_catch_exception_raise;
_S_catch_exception_raise_state;
_S_catch_exception_raise_state_identity;
_S_msg_add_auth; _S_msg_del_auth;
_S_msg_describe_ports;
_S_msg_get_dtable; _S_msg_set_dtable;
_S_msg_get_env_variable; _S_msg_set_env_variable;
_S_msg_get_environment; _S_msg_set_environment;
_S_msg_get_fd; _S_msg_set_fd;
_S_msg_get_init_int; _S_msg_set_init_int;
_S_msg_get_init_ints; _S_msg_set_init_ints;
_S_msg_get_init_port; _S_msg_set_init_port;
_S_msg_get_init_ports; _S_msg_set_init_ports;
_S_msg_proc_newids; _S_msg_report_wait;
_S_msg_sig_post; _S_msg_sig_post_untraced;
_hurd_intr_rpc_mach_msg;
_hurdsig_fault_catch_exception_raise;
_hurdsig_fault_catch_exception_raise_state;
_hurdsig_fault_catch_exception_raise_state_identity;
# "quasi-internal" variables
_hurd_device_master;
_hurd_dtable; _hurd_dtablesize; _hurd_dtable_lock;
_hurd_host_priv;
_hurd_msgport;
_hurd_ports;
# "quasi-internal" functions
_hurd_canonicalize_directory_name_internal;
_hurd_critical_section_lock;
_hurd_critical_section_unlock;
_hurd_exception2signal;
_hurd_exec;
_hurd_fd_get;
_hurd_init;
_hurd_intern_fd;
_hurd_port_cleanup;
_hurd_port_free;
_hurd_port_get;
_hurd_port_locked_get;
_hurd_ports_use;
_hurd_thread_sigstate;
# functions in normal name space
# f*
file_name_lookup; file_name_lookup_under; file_name_path_lookup;
file_name_split;
fopenport;
# g*
get_privileged_ports;
getauth; getcrdir; getcwdir; getcttyid; getdport; getproc; getumask;
# h*
hurd_catch_signal;
hurd_check_cancel;
hurd_file_name_lookup; hurd_file_name_lookup_retry;
hurd_file_name_path_lookup; hurd_file_name_split;
hurd_preempt_signals;
hurd_safe_copyin; hurd_safe_copyout;
hurd_safe_memmove; hurd_safe_memset;
hurd_sig_post;
hurd_thread_cancel; hurd_thread_self;
hurd_unpreempt_signals;
# o*
openport;
# p*
pid2task;
# s*
setauth; setcrdir; setcwdir; setproc; setcttyid;
# t*
task2pid;
# v*
vpprintf;
}
GLIBC_2.1 {
# "quasi-internal" functions
_hurd_proc_init;
# g*
geteuids;
# s*
seteuids;
}
GLIBC_2.1.3 {
# d*
directory_name_split;
# h*
hurd_directory_name_split;
}
GLIBC_2.2.5 {
# These always existed as inlines but the real functions were not exported.
__hurd_fail;
_hurd_self_sigstate;
# Same for these "quasi-internal" functions
_hurd_port_init;
_hurd_port_set;
# internal symbols used by other libraries (e.g. librt)
_hurd_raise_signal;
_hurdsig_interrupt_timeout;
_hurdsig_fault_preemptor; _hurdsig_fault_env;
}
GLIBC_2.2.6 {
# functions used in macros & inline functions
__errno_location;
}
GLIBC_2.26 {
# "quasi-internal" functions
_hurd_exec_paths;
}
GLIBC_2.27 {
# These always existed as inlines but the real functions were not exported.
_hurd_fd_error_signal; _hurd_fd_error;
__hurd_dfail; __hurd_sockfail;
_hurd_port_locked_set;
__hurd_threadvar_location_from_sp;
__hurd_threadvar_location;
_hurd_userlink_link; _hurd_userlink_unlink; _hurd_userlink_clear;
}
HURD_CTHREADS_0.3 {
# weak refs to libthreads functions that libc calls iff libthreads in use
__cthread_fork; __cthread_detach;
__pthread_getattr_np; __pthread_attr_getstack;
# variables used for detecting cthreads
_cthread_exit_routine; _cthread_init_routine;
# cthreads functions with stubs in libc
__cthread_keycreate; __cthread_getspecific; __cthread_setspecific;
}
GLIBC_PRIVATE {
# Used by other libs.
__lll_abstimed_wait; __lll_abstimed_xwait;
__lll_abstimed_lock; __lll_robust_lock;
__lll_robust_abstimed_lock; __lll_robust_trylock;
__lll_robust_unlock;
}
}