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 #include <thread.h> 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* these are private to the library */ 37 extern int primary_link_map; 38 extern void lmutex_lock(mutex_t *); 39 extern void lmutex_unlock(mutex_t *); 40 extern void lrw_rdlock(rwlock_t *); 41 extern void lrw_wrlock(rwlock_t *); 42 extern void lrw_unlock(rwlock_t *); 43 extern void sig_mutex_lock(mutex_t *); 44 extern void sig_mutex_unlock(mutex_t *); 45 extern int sig_mutex_trylock(mutex_t *); 46 extern int sig_cond_wait(cond_t *, mutex_t *); 47 extern int sig_cond_reltimedwait(cond_t *, mutex_t *, const timespec_t *); 48 extern void cancel_safe_mutex_lock(mutex_t *); 49 extern void cancel_safe_mutex_unlock(mutex_t *); 50 extern int cancel_safe_mutex_trylock(mutex_t *); 51 extern int cancel_active(void); 52 extern int _thrp_cancelled(void); 53 54 /* the private libc thread-safe allocator */ 55 extern void *lmalloc(size_t); 56 extern void lfree(void *, size_t); 57 58 #if defined(THREAD_DEBUG) 59 extern void assert_no_libc_locks_held(void); 60 #else 61 #define assert_no_libc_locks_held() 62 #endif 63 64 #define _FWRITE _fwrite_unlocked 65 #define FILENO(s) _fileno(s) 66 #define FERROR(s) ferror(s) 67 #define GETC(s) _getc_internal(s) 68 #define UNGETC(c, s) _ungetc_unlocked(c, s) 69 #define PUTC(c, s) _putc_internal(c, s) 70 #define GETWC(s) getwc(s) 71 #define PUTWC(c, s) putwc(c, s) 72 73 /* 74 * Cheap check to tell if stdio needs to lock for MT progs. 75 * Referenced directly in port/stdio/flush.c and FLOCKFILE and 76 * FUNLOCKFILE macros. __libc_threaded gets set to 1 when the first 77 * thread (beyond the main thread) is created in _thrp_create(). 78 */ 79 extern int __libc_threaded; 80 81 #define FILELOCKING(iop) (GET_IONOLOCK(iop) == 0) 82 83 #define FLOCKFILE(lk, iop) \ 84 { \ 85 if (__libc_threaded && FILELOCKING(iop)) \ 86 lk = _flockget((iop)); \ 87 else \ 88 lk = NULL; \ 89 } 90 91 #define FUNLOCKFILE(lk) \ 92 { \ 93 if (lk != NULL) \ 94 _flockrel(lk); \ 95 } 96 97 #define FLOCKRETURN(iop, ret) \ 98 { int r; \ 99 rmutex_t *lk; \ 100 FLOCKFILE(lk, iop); \ 101 r = (ret); \ 102 FUNLOCKFILE(lk); \ 103 return (r); \ 104 } 105 106 #ifdef __cplusplus 107 } 108 #endif 109 110 #endif /* _MTLIB_H */ 111