1 /* Copyright (C) 2003-2022 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 <pthread.h> 19 #include <semaphore.h> 20 #include <signal.h> 21 #include <stdint.h> 22 #include <stdio.h> 23 #include <stdlib.h> 24 #include <unistd.h> 25 #include <pthreaddef.h> 26 #include <descr.h> 27 28 29 extern pthread_barrier_t b; 30 31 #define TOTAL_SIGS 1000 32 extern int nsigs; 33 34 extern sem_t s; 35 36 37 static __thread void (*fp) (void); 38 39 40 #define THE_SIG SIGUSR1 41 void handler(int sig)42handler (int sig) 43 { 44 if (sig != THE_SIG) 45 { 46 write (STDOUT_FILENO, "wrong signal\n", 13); 47 _exit (1); 48 } 49 50 fp (); 51 52 if (sem_post (&s) != 0) 53 { 54 write (STDOUT_FILENO, "sem_post failed\n", 16); 55 _exit (1); 56 } 57 } 58 59 60 void * tf(void * arg)61tf (void *arg) 62 { 63 if ((uintptr_t) pthread_self () & (TCB_ALIGNMENT - 1)) 64 { 65 puts ("thread's struct pthread not aligned enough"); 66 exit (1); 67 } 68 69 if (fp != NULL) 70 { 71 puts ("fp not initially NULL"); 72 exit (1); 73 } 74 75 fp = arg; 76 77 pthread_barrier_wait (&b); 78 79 pthread_barrier_wait (&b); 80 81 if (nsigs != TOTAL_SIGS) 82 { 83 puts ("barrier_wait prematurely returns"); 84 exit (1); 85 } 86 87 return NULL; 88 } 89