1 /* 2 * Copyright (c) 2005 David Xu <davidxu@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $DragonFly: src/lib/libthread_xu/thread/thr_kern.c,v 1.1 2005/02/01 12:38:27 davidxu Exp $ 27 */ 28 29 #include <sys/cdefs.h> 30 #include <sys/types.h> 31 #include <sys/signalvar.h> 32 #include <pthread.h> 33 #include "thr_private.h" 34 35 /*#define DEBUG_THREAD_KERN */ 36 #ifdef DEBUG_THREAD_KERN 37 #define DBG_MSG stdout_debug 38 #else 39 #define DBG_MSG(x...) 40 #endif 41 42 /* 43 * This is called when the first thread (other than the initial 44 * thread) is created. 45 */ 46 int 47 _thr_setthreaded(int threaded) 48 { 49 if (((threaded == 0) ^ (__isthreaded == 0)) == 0) 50 return (0); 51 52 __isthreaded = threaded; 53 #if 0 54 if (threaded != 0) { 55 _thr_rtld_init(); 56 } else { 57 _thr_rtld_fini(); 58 } 59 #endif 60 return (0); 61 } 62 63 void 64 _thr_signal_block(struct pthread *curthread) 65 { 66 sigset_t set; 67 68 if (curthread->sigblock > 0) { 69 curthread->sigblock++; 70 return; 71 } 72 SIGFILLSET(set); 73 SIGDELSET(set, SIGBUS); 74 SIGDELSET(set, SIGILL); 75 SIGDELSET(set, SIGFPE); 76 SIGDELSET(set, SIGSEGV); 77 SIGDELSET(set, SIGTRAP); 78 __sys_sigprocmask(SIG_BLOCK, &set, &curthread->sigmask); 79 curthread->sigblock++; 80 } 81 82 void 83 _thr_signal_unblock(struct pthread *curthread) 84 { 85 if (--curthread->sigblock == 0) 86 __sys_sigprocmask(SIG_SETMASK, &curthread->sigmask, NULL); 87 } 88 89 void 90 _thr_assert_lock_level() 91 { 92 PANIC("locklevel <= 0"); 93 } 94 95 int 96 _thr_send_sig(struct pthread *thread, int sig) 97 { 98 return (kill(thread->tid, sig)); 99 } 100 101 int 102 _thr_get_tid() 103 { 104 return (getpid()); 105 } 106