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
35extern "C" {
36#endif
37
38/* these are private to the library */
39extern	int	primary_link_map;
40extern	void	lmutex_lock(mutex_t *);
41extern	void	lmutex_unlock(mutex_t *);
42extern	void	lrw_rdlock(rwlock_t *);
43extern	void	lrw_wrlock(rwlock_t *);
44extern	void	lrw_unlock(rwlock_t *);
45extern	void	sig_mutex_lock(mutex_t *);
46extern	void	sig_mutex_unlock(mutex_t *);
47extern	int	sig_mutex_trylock(mutex_t *);
48extern	int	sig_cond_wait(cond_t *, mutex_t *);
49extern	int	sig_cond_reltimedwait(cond_t *, mutex_t *, const timespec_t *);
50extern	void	cancel_safe_mutex_lock(mutex_t *);
51extern	void	cancel_safe_mutex_unlock(mutex_t *);
52extern	int	cancel_safe_mutex_trylock(mutex_t *);
53extern	int	cancel_active(void);
54extern	int	_thrp_cancelled(void);
55
56/* the private libc thread-safe allocator */
57extern	void	*lmalloc(size_t);
58extern	void	lfree(void *, size_t);
59
60#if defined(THREAD_DEBUG)
61extern	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 */
81extern	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