1 /* Copyright (C) 1994-2022 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #include <spin-lock.h> 19 #include <mach/mach_traps.h> 20 21 void __spin_lock_solid(spin_lock_t * lock)22__spin_lock_solid (spin_lock_t *lock) 23 { 24 while (__spin_lock_locked (lock) || ! __spin_try_lock (lock)) 25 /* Yield to another thread (system call). */ 26 __swtch_pri (0); 27 } 28 weak_alias (__spin_lock_solid, spin_lock_solid); 29 libc_hidden_def (__spin_lock_solid) 30