xnu-792.13.8.tar.gz

[apple/xnu.git] / libsa / malloc.c

diff --git a/libsa/malloc.c b/libsa/malloc.c
index ed3a64d2fb678d8657354152ead847bf9199dbe0..65b7255fb38c8deea5fee64f26bb06505a67a1b3 100644 (file)
--- a/libsa/malloc.c
+++ b/libsa/malloc.c
@@ -1,36 +1,48 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
  * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
- * 
- * 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
+ * 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
+ *
+ * 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_LICENSE_HEADER_END@
+ *
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  */
 #include <string.h>
 
+#include <mach/mach_types.h>
+
+#include <kern/kern_types.h>
 #include <kern/queue.h>
+#include <kern/kalloc.h>
 #include <kern/lock.h>
 #include <kern/assert.h> 
+
 #include <vm/vm_kern.h>
 
 #include "libsa/malloc.h"
 
+extern void panic(const char *string, ...);
+
 /*********************************************************************
 * Structure for a client memory block. Contains linked-list pointers,
 * a size field giving the TOTAL size of the block, including this
@@ -41,8 +53,8 @@ typedef struct malloc_block {
 
        struct malloc_block     *malFwd;
        struct malloc_block     *malBwd;
+       void                    *malActl;
        unsigned int            malSize;
-       unsigned int            malActl;
 } malloc_block;
 
 static malloc_block malAnchor = {&malAnchor, &malAnchor, 0, 0};
@@ -68,7 +80,7 @@ void * malloc(size_t size) {
        
        rmem = (nmem + 15) & -16;                                       /* Round to 16 byte boundary */
        amem = (malloc_block *)rmem;                            /* Point to the block */
-       amem->malActl = (unsigned int)nmem;                     /* Set the actual address */
+       amem->malActl = nmem;                                   /* Set the actual address */
        amem->malSize = nsize;                                          /* Size */
        
        mutex_lock(malloc_lock);
@@ -109,7 +121,7 @@ void free(void * address) {
 
        mutex_unlock(malloc_lock);                              /* Unlock now */
    
-       kfree((void *)amem->malActl, amem->malSize);    /* Toss it */
+       kfree(amem->malActl, amem->malSize);            /* Toss it */
 
        return; 
 
@@ -123,7 +135,7 @@ void free(void * address) {
 __private_extern__ void
 malloc_init(void)
 {
-    malloc_lock = mutex_alloc(ETAP_IO_AHA);
+    malloc_lock = mutex_alloc(0);
     malInited = 1;
 }
 
@@ -142,18 +154,18 @@ void malloc_reset(void) {
 
        mutex_lock(malloc_lock);
        
-       amem = malAnchor.malFwd;                                        /* Get the first one */
+       amem = malAnchor.malFwd;                                /* Get the first one */
        
-       while(amem != &malAnchor) {                                     /* Go until we hit the anchor */
+       while(amem != &malAnchor) {                             /* Go until we hit the anchor */
        
-               bmem = amem->malFwd;                                    /* Next one */
-               kfree((void *)amem->malActl, amem->malSize);    /* Toss it */
-               amem = bmem;                                                    /* Skip to it */
+               bmem = amem->malFwd;                            /* Next one */
+               kfree(amem->malActl, amem->malSize);            /* Toss it */
+               amem = bmem;                                    /* Skip to it */
        
        } 
 
-       malAnchor.malFwd = 0x666;                                       /* Cause a fault if we try again */
-       malAnchor.malBwd = 0x666;                                       /* Cause a fault if we try again */
+       malAnchor.malFwd = (struct malloc_block *) 0x666;       /* Cause a fault if we try again */
+       malAnchor.malBwd = (struct malloc_block *) 0x666;       /* Cause a fault if we try again */
        
        mutex_unlock(malloc_lock);                              /* Unlock now */