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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _MTLIB_H 28 #define _MTLIB_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <thread.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 /* these are private to the library */ 39 extern int primary_link_map; 40 extern void lmutex_lock(mutex_t *); 41 extern void lmutex_unlock(mutex_t *); 42 extern void lrw_rdlock(rwlock_t *); 43 extern void lrw_wrlock(rwlock_t *); 44 extern void lrw_unlock(rwlock_t *); 45 extern void sig_mutex_lock(mutex_t *); 46 extern void sig_mutex_unlock(mutex_t *); 47 extern int sig_mutex_trylock(mutex_t *); 48 extern int sig_cond_wait(cond_t *, mutex_t *); 49 extern int sig_cond_reltimedwait(cond_t *, mutex_t *, const timespec_t *); 50 extern void cancel_safe_mutex_lock(mutex_t *); 51 extern void cancel_safe_mutex_unlock(mutex_t *); 52 extern int cancel_safe_mutex_trylock(mutex_t *); 53 extern int cancel_active(void); 54 extern int _thrp_cancelled(void); 55 56 /* the private libc thread-safe allocator */ 57 extern void *lmalloc(size_t); 58 extern void lfree(void *, size_t); 59 60 #if defined(THREAD_DEBUG) 61 extern void assert_no_libc_locks_held(void); 62 #else 63 #define assert_no_libc_locks_held() 64 #endif 65 66 #define _FWRITE _fwrite_unlocked 67 #define FILENO(s) _fileno(s) 68 #define FERROR(s) ferror(s) 69 #define GETC(s) _getc_unlocked(s) 70 #define UNGETC(c, s) _ungetc_unlocked(c, s) 71 #define PUTC(c, s) _putc_unlocked(c, s) 72 #define GETWC(s) getwc(s) 73 #define PUTWC(c, s) putwc(c, s) 74 75 /* 76 * Cheap check to tell if stdio needs to lock for MT progs. 77 * Referenced directly in port/stdio/flush.c and FLOCKFILE and 78 * FUNLOCKFILE macros. __libc_threaded gets set to 1 when the first 79 * thread (beyond the main thread) is created in _thrp_create(). 80 */ 81 extern int __libc_threaded; 82 83 #define FILELOCKING(iop) (GET_IONOLOCK(iop) == 0) 84 85 #define FLOCKFILE(lk, iop) \ 86 { \ 87 if (__libc_threaded && FILELOCKING(iop)) \ 88 lk = _flockget((iop)); \ 89 else \ 90 lk = NULL; \ 91 } 92 93 #define FUNLOCKFILE(lk) \ 94 { \ 95 if (lk != NULL) \ 96 _flockrel(lk); \ 97 } 98 99 #define FLOCKRETURN(iop, ret) \ 100 { int r; \ 101 rmutex_t *lk; \ 102 FLOCKFILE(lk, iop); \ 103 r = (ret); \ 104 FUNLOCKFILE(lk); \ 105 return (r); \ 106 } 107 108 #ifdef __cplusplus 109 } 110 #endif 111 112 #endif /* _MTLIB_H */ 113