diff options
Diffstat (limited to 'include/mach/vm_statistics.h')
| -rw-r--r-- | include/mach/vm_statistics.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/include/mach/vm_statistics.h b/include/mach/vm_statistics.h new file mode 100644 index 0000000..2039a82 --- /dev/null +++ b/include/mach/vm_statistics.h @@ -0,0 +1,75 @@ +/* + * Mach Operating System + * Copyright (c) 1993-1987 Carnegie Mellon University + * All Rights Reserved. + * + * Permission to use, copy, modify and distribute this software and its + * documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR + * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie Mellon + * the rights to redistribute these changes. + */ +/* + * File: mach/vm_statistics.h + * Author: Avadis Tevanian, Jr., Michael Wayne Young, David Golub + * + * Virtual memory statistics structure. + * + */ + +#ifndef _MACH_VM_STATISTICS_H_ +#define _MACH_VM_STATISTICS_H_ + +#include <mach/machine/vm_types.h> + +struct vm_statistics { + integer_t pagesize; /* page size in bytes */ + integer_t free_count; /* # of pages free */ + integer_t active_count; /* # of pages active */ + integer_t inactive_count; /* # of pages inactive */ + integer_t wire_count; /* # of pages wired down */ + integer_t zero_fill_count; /* # of zero fill pages */ + integer_t reactivations; /* # of pages reactivated */ + integer_t pageins; /* # of pageins */ + integer_t pageouts; /* # of pageouts */ + integer_t faults; /* # of faults */ + integer_t cow_faults; /* # of copy-on-writes */ + integer_t lookups; /* object cache lookups */ + integer_t hits; /* object cache hits */ +}; + +typedef struct vm_statistics *vm_statistics_t; +typedef struct vm_statistics vm_statistics_data_t; + +#ifdef MACH_KERNEL +extern vm_statistics_data_t vm_stat; +#endif /* MACH_KERNEL */ + +/* + * Each machine dependent implementation is expected to + * keep certain statistics. They may do this anyway they + * so choose, but are expected to return the statistics + * in the following structure. + */ + +struct pmap_statistics { + integer_t resident_count; /* # of pages mapped (total)*/ + integer_t wired_count; /* # of pages wired */ +}; + +typedef struct pmap_statistics *pmap_statistics_t; +#endif /* _MACH_VM_STATISTICS_H_ */ |