/*
* Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This 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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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_LICENSE_OSREFERENCE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
* asserted.
*/
- unsigned int paging_in_progress;
+ int paging_in_progress;
/* The memory object ports are
* being used (e.g., for pagein
* or pageout) -- don't change
not_in_use:24;
#ifdef UPL_DEBUG
queue_head_t uplq; /* List of outstanding upls */
+#ifdef VM_PIP_DEBUG
+/*
+ * Keep track of the stack traces for the first holders
+ * of a "paging_in_progress" reference for this VM object.
+ */
+#define VM_PIP_DEBUG_STACK_FRAMES 25 /* depth of each stack trace */
+#define VM_PIP_DEBUG_MAX_REFS 10 /* track that many references */
+ struct __pip_backtrace {
+ void *pip_retaddr[VM_PIP_DEBUG_STACK_FRAMES];
+ } pip_holders[VM_PIP_DEBUG_MAX_REFS];
+#endif /* VM_PIP_DEBUG */
#endif /* UPL_DEBUG */
};
__private_extern__ void vm_object_collapse(
vm_object_t object,
- vm_object_offset_t offset);
+ vm_object_offset_t offset,
+ boolean_t can_bypass);
__private_extern__ boolean_t vm_object_copy_quickly(
vm_object_t *_object,
ppnum_t phys_page,
vm_size_t size);
-__private_extern__ kern_return_t adjust_vm_object_cache(
+extern kern_return_t adjust_vm_object_cache(
vm_size_t oval,
vm_size_t nval);
+extern kern_return_t vm_object_page_op(
+ vm_object_t object,
+ vm_object_offset_t offset,
+ int ops,
+ ppnum_t *phys_entry,
+ int *flags);
+
+extern kern_return_t vm_object_range_op(
+ vm_object_t object,
+ vm_object_offset_t offset_beg,
+ vm_object_offset_t offset_end,
+ int ops,
+ int *range);
+
/*
* Event waiting handling
*/
/*
* Routines implemented as macros
*/
+#ifdef VM_PIP_DEBUG
+extern unsigned OSBacktrace(void **bt, unsigned maxAddrs);
+#define VM_PIP_DEBUG_BEGIN(object) \
+ MACRO_BEGIN \
+ if ((object)->paging_in_progress < VM_PIP_DEBUG_MAX_REFS) { \
+ int pip = (object)->paging_in_progress; \
+ (void) OSBacktrace(&(object)->pip_holders[pip].retaddr[0], \
+ VM_PIP_DEBUG_STACK_FRAMES); \
+ } \
+ MACRO_END
+#else /* VM_PIP_DEBUG */
+#define VM_PIP_DEBUG_BEGIN(object)
+#endif /* VM_PIP_DEBUG */
#define vm_object_paging_begin(object) \
MACRO_BEGIN \
+ assert((object)->paging_in_progress >= 0); \
+ VM_PIP_DEBUG_BEGIN((object)); \
(object)->paging_in_progress++; \
MACRO_END
#define vm_object_paging_end(object) \
MACRO_BEGIN \
- assert((object)->paging_in_progress != 0); \
+ assert((object)->paging_in_progress > 0); \
if (--(object)->paging_in_progress == 0) { \
vm_object_wakeup(object, \
VM_OBJECT_EVENT_PAGING_IN_PROGRESS); \
projects / apple / xnu.git / blobdiff