1/*
2 * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/* Copyright (c) 1995-2005 Apple Computer, Inc. All Rights Reserved */
29/*
30 *	pthread_support.c
31 */
32
33
34#define  _PTHREAD_CONDATTR_T
35#define  _PTHREAD_COND_T
36#define _PTHREAD_MUTEXATTR_T
37#define _PTHREAD_MUTEX_T
38#define _PTHREAD_RWLOCKATTR_T
39#define _PTHREAD_RWLOCK_T
40
41#undef pthread_mutexattr_t
42#undef pthread_mutex_t
43#undef pthread_condattr_t
44#undef pthread_cond_t
45#undef pthread_rwlockattr_t
46#undef pthread_rwlock_t
47
48#include <sys/param.h>
49#include <sys/resourcevar.h>
50#include <sys/proc_internal.h>
51#include <sys/kauth.h>
52#include <sys/systm.h>
53#include <sys/timeb.h>
54#include <sys/times.h>
55#include <sys/acct.h>
56#include <sys/file_internal.h>
57#include <sys/kernel.h>
58#include <sys/wait.h>
59#include <sys/signalvar.h>
60#include <sys/syslog.h>
61#include <sys/stat.h>
62#include <sys/lock.h>
63#include <sys/kdebug.h>
64
65#include <sys/mount.h>
66#include <sys/sysproto.h>
67
68#include <sys/vm.h>
69#include <kern/task.h>
70#include <kern/thread.h>
71
72#include <sys/pthread_internal.h>
73
74#define PTHREAD_SYNCH_MAX 256
75static pthread_mutex_t * pmutex_trans_array[PTHREAD_SYNCH_MAX];
76static pthread_cond_t * pcond_trans_array[PTHREAD_SYNCH_MAX];
77//static pthread_rwlock_t * prwlock_trans_array[PTHREAD_SYNCH_MAX];
78
79pthread_mutex_t *
80pthread_id_to_mutex(int mutexid)
81{
82	pthread_mutex_t * mtx = NULL;
83
84
85	if (mutexid >= 0 && mutexid < PTHREAD_SYNCH_MAX) {
86			pthread_list_lock();
87			mtx = pmutex_trans_array[mutexid];
88			if (mtx) {
89				MTX_LOCK(mtx->lock);
90				mtx->refcount++;
91				MTX_UNLOCK(mtx->lock);
92			}
93			pthread_list_unlock();
94	}
95	return(mtx);
96}
97
98
99int
100pthread_id_mutex_add(pthread_mutex_t * mutex)
101{
102	int i;
103
104	pthread_list_lock();
105	for(i = 1; i < PTHREAD_SYNCH_MAX; i++) {
106		if (pmutex_trans_array[i] == 0) {
107			pmutex_trans_array[i]  = mutex;
108			break;
109		}
110	}
111	pthread_list_unlock();
112	if (i == PTHREAD_SYNCH_MAX)
113		return(0);
114	return(i);
115}
116
117
118void
119pthread_id_mutex_remove(int mutexid)
120{
121	pthread_list_lock();
122	if (pmutex_trans_array[mutexid]) {
123		pmutex_trans_array[mutexid] = 0;
124	}
125	pthread_list_unlock();
126}
127
128
129void
130pthread_mutex_release(pthread_mutex_t * mutex)
131{
132	MTX_LOCK(mutex->lock);
133	mutex->refcount --;
134	MTX_UNLOCK(mutex->lock);
135}
136
137
138pthread_cond_t *
139pthread_id_to_cond(int condid)
140{
141	pthread_cond_t * cond = NULL;
142
143
144	if (condid >= 0 && condid < PTHREAD_SYNCH_MAX) {
145			pthread_list_lock();
146			cond = pcond_trans_array[condid];
147			if (cond) {
148				COND_LOCK(cond->lock);
149				cond->refcount++;
150				COND_UNLOCK(cond->lock);
151			}
152			pthread_list_unlock();
153	}
154	return(cond);
155}
156
157
158int
159pthread_id_cond_add(pthread_cond_t * cond)
160{
161	int i;
162
163	pthread_list_lock();
164	for(i = 1; i < PTHREAD_SYNCH_MAX; i++) {
165		if (pcond_trans_array[i] == 0) {
166			pcond_trans_array[i]  = cond;
167			break;
168		}
169	}
170	pthread_list_unlock();
171	if (i == PTHREAD_SYNCH_MAX)
172		return(0);
173	return(i);
174}
175
176
177void
178pthread_id_cond_remove(int condid)
179{
180	pthread_list_lock();
181	if (pcond_trans_array[condid]) {
182		pcond_trans_array[condid] = 0;
183	}
184	pthread_list_unlock();
185}
186
187
188void
189pthread_cond_release(pthread_cond_t * cond)
190{
191	COND_LOCK(cond->lock);
192	cond->refcount --;
193	COND_UNLOCK(cond->lock);
194}
195
196