1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <signal.h> 30 31 #include <fmd_alloc.h> 32 #include <fmd_thread.h> 33 #include <fmd_module.h> 34 #include <fmd_error.h> 35 #include <fmd_subr.h> 36 #include <fmd.h> 37 38 fmd_thread_t * 39 fmd_thread_xcreate(fmd_module_t *mp, pthread_t tid) 40 { 41 fmd_thread_t *tp = fmd_alloc(sizeof (fmd_thread_t), FMD_SLEEP); 42 43 tp->thr_mod = mp; 44 tp->thr_tid = tid; 45 tp->thr_func = NULL; 46 tp->thr_arg = NULL; 47 tp->thr_trdata = fmd_trace_create(); 48 tp->thr_trfunc = (fmd_tracebuf_f *)fmd.d_thr_trace; 49 tp->thr_errdepth = 0; 50 51 (void) pthread_mutex_lock(&fmd.d_thr_lock); 52 fmd_list_append(&fmd.d_thr_list, tp); 53 (void) pthread_mutex_unlock(&fmd.d_thr_lock); 54 55 return (tp); 56 } 57 58 static void * 59 fmd_thread_start(void *arg) 60 { 61 fmd_thread_t *tp = arg; 62 63 if (pthread_setspecific(fmd.d_key, tp) != 0) 64 fmd_panic("failed to initialize thread key to %p", arg); 65 66 (void) pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL); 67 (void) pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL); 68 69 tp->thr_func(tp->thr_arg); 70 return (NULL); 71 } 72 73 fmd_thread_t * 74 fmd_thread_create(fmd_module_t *mp, fmd_thread_f *func, void *arg) 75 { 76 fmd_thread_t *tp = fmd_alloc(sizeof (fmd_thread_t), FMD_SLEEP); 77 sigset_t oset, nset; 78 int err; 79 80 tp->thr_mod = mp; 81 tp->thr_func = func; 82 tp->thr_arg = arg; 83 tp->thr_trdata = fmd_trace_create(); 84 tp->thr_trfunc = (fmd_tracebuf_f *)fmd.d_thr_trace; 85 tp->thr_errdepth = 0; 86 87 (void) sigfillset(&nset); 88 (void) sigdelset(&nset, SIGABRT); /* always unblocked for fmd_panic() */ 89 (void) sigdelset(&nset, fmd.d_thr_sig); /* for fmd_thr_signal() */ 90 91 (void) pthread_sigmask(SIG_SETMASK, &nset, &oset); 92 err = pthread_create(&tp->thr_tid, NULL, fmd_thread_start, tp); 93 (void) pthread_sigmask(SIG_SETMASK, &oset, NULL); 94 95 if (err != 0) { 96 fmd_free(tp, sizeof (fmd_thread_t)); 97 return (NULL); 98 } 99 100 (void) pthread_mutex_lock(&fmd.d_thr_lock); 101 fmd_list_append(&fmd.d_thr_list, tp); 102 (void) pthread_mutex_unlock(&fmd.d_thr_lock); 103 104 return (tp); 105 } 106 107 void 108 fmd_thread_destroy(fmd_thread_t *tp, int flag) 109 { 110 if (flag == FMD_THREAD_JOIN && tp->thr_tid != pthread_self() && 111 pthread_join(tp->thr_tid, NULL) != 0) { 112 fmd_error(EFMD_MOD_JOIN, "failed to join thread for module " 113 "%s (tid %u)\n", tp->thr_mod->mod_name, tp->thr_tid); 114 } 115 116 (void) pthread_mutex_lock(&fmd.d_thr_lock); 117 fmd_list_delete(&fmd.d_thr_list, tp); 118 (void) pthread_mutex_unlock(&fmd.d_thr_lock); 119 120 fmd_trace_destroy(tp->thr_trdata); 121 fmd_free(tp, sizeof (fmd_thread_t)); 122 } 123