xnu-1228.tar.gz

[apple/xnu.git] / bsd / kern / pthread_support.c

diff --git a/bsd/kern/pthread_support.c b/bsd/kern/pthread_support.c
new file mode 100644 (file)
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+++ b/bsd/kern/pthread_support.c
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+/*
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+/* Copyright (c) 1995-2005 Apple Computer, Inc. All Rights Reserved */
+/*
+ *     pthread_support.c
+ */
+
+
+#define  _PTHREAD_CONDATTR_T
+#define  _PTHREAD_COND_T
+#define _PTHREAD_MUTEXATTR_T
+#define _PTHREAD_MUTEX_T
+#define _PTHREAD_RWLOCKATTR_T
+#define _PTHREAD_RWLOCK_T
+
+#undef pthread_mutexattr_t
+#undef pthread_mutex_t
+#undef pthread_condattr_t
+#undef pthread_cond_t
+#undef pthread_rwlockattr_t
+#undef pthread_rwlock_t
+
+#include <sys/param.h>
+#include <sys/resourcevar.h>
+#include <sys/proc_internal.h>
+#include <sys/kauth.h>
+#include <sys/systm.h>
+#include <sys/timeb.h>
+#include <sys/times.h>
+#include <sys/acct.h>
+#include <sys/file_internal.h>
+#include <sys/kernel.h>
+#include <sys/wait.h>
+#include <sys/signalvar.h>
+#include <sys/syslog.h>
+#include <sys/stat.h>
+#include <sys/lock.h>
+#include <sys/kdebug.h>
+
+#include <sys/mount.h>
+#include <sys/sysproto.h>
+
+#include <sys/vm.h>
+#include <kern/task.h> 
+#include <kern/thread.h>
+
+#include <sys/pthread_internal.h>
+
+#define PTHREAD_SYNCH_MAX 256
+static pthread_mutex_t * pmutex_trans_array[PTHREAD_SYNCH_MAX];
+static pthread_cond_t * pcond_trans_array[PTHREAD_SYNCH_MAX];
+//static pthread_rwlock_t * prwlock_trans_array[PTHREAD_SYNCH_MAX];
+
+pthread_mutex_t * 
+pthread_id_to_mutex(int mutexid)
+{
+       pthread_mutex_t * mtx = NULL;
+
+
+       if (mutexid >= 0 && mutexid < PTHREAD_SYNCH_MAX) {
+                       pthread_list_lock();
+                       mtx = pmutex_trans_array[mutexid];
+                       if (mtx) {
+                               MTX_LOCK(mtx->lock);
+                               mtx->refcount++;
+                               MTX_UNLOCK(mtx->lock);
+                       } 
+                       pthread_list_unlock();
+       }
+       return(mtx);
+}
+
+
+int    
+pthread_id_mutex_add(pthread_mutex_t * mutex)
+{
+       int i;
+
+       pthread_list_lock();
+       for(i = 1; i < PTHREAD_SYNCH_MAX; i++) {
+               if (pmutex_trans_array[i] == 0) {
+                       pmutex_trans_array[i]  = mutex;
+                       break;
+               }
+       }
+       pthread_list_unlock();
+       if (i == PTHREAD_SYNCH_MAX)
+               return(0);
+       return(i);
+}
+
+
+void
+pthread_id_mutex_remove(int mutexid)
+{
+       pthread_list_lock();
+       if (pmutex_trans_array[mutexid]) {
+               pmutex_trans_array[mutexid] = 0;
+       }
+       pthread_list_unlock();
+}
+
+
+void 
+pthread_mutex_release(pthread_mutex_t * mutex)
+{
+       MTX_LOCK(mutex->lock);
+       mutex->refcount --;
+       MTX_UNLOCK(mutex->lock);
+}
+
+
+pthread_cond_t * 
+pthread_id_to_cond(int condid)
+{
+       pthread_cond_t * cond = NULL;
+
+
+       if (condid >= 0 && condid < PTHREAD_SYNCH_MAX) {
+                       pthread_list_lock();
+                       cond = pcond_trans_array[condid];
+                       if (cond) {
+                               COND_LOCK(cond->lock);
+                               cond->refcount++;
+                               COND_UNLOCK(cond->lock);
+                       } 
+                       pthread_list_unlock();
+       }
+       return(cond);
+}
+
+
+int    
+pthread_id_cond_add(pthread_cond_t * cond)
+{
+       int i;
+
+       pthread_list_lock();
+       for(i = 1; i < PTHREAD_SYNCH_MAX; i++) {
+               if (pcond_trans_array[i] == 0) {
+                       pcond_trans_array[i]  = cond;
+                       break;
+               }
+       }
+       pthread_list_unlock();
+       if (i == PTHREAD_SYNCH_MAX)
+               return(0);
+       return(i);
+}
+
+
+void
+pthread_id_cond_remove(int condid)
+{
+       pthread_list_lock();
+       if (pcond_trans_array[condid]) {
+               pcond_trans_array[condid] = 0;
+       }
+       pthread_list_unlock();
+}
+
+
+void 
+pthread_cond_release(pthread_cond_t * cond)
+{
+       COND_LOCK(cond->lock);
+       cond->refcount --;
+       COND_UNLOCK(cond->lock);
+}
+