1 /* 2 * Thread-related utilities. 3 * 4 * Copyright (C) 2024 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #include <l4/re/env.h> 23 24 #include <pthread-l4.h> 25 #include <pthread.h> 26 27 #include "thread.h" 28 29 30 31 l4_cap_idx_t get_current_thread() 32 { 33 l4_cap_idx_t thread = pthread_l4_cap(pthread_self()); 34 35 /* NOTE: On MIPS32, at least, in a payload started by libexec, the main thread 36 is not necessarily returned correctly. */ 37 38 if (l4_is_invalid_cap(thread)) 39 return l4re_env()->main_thread; 40 41 return thread; 42 }