root/kern/include/uw-vmstats.h

INCLUDED FROM

   1 #ifndef VM_STATS_H
   2 #define VM_STATS_H
   4 /* UW specific code - This won't be needed or used until assignment 3 */
   6 /* belongs in kern/include/uw-vmstat.h */
   8 /* ----------------------------------------------------------------------- */
   9 /* Virtual memory stats */
  10 /* Tracks stats on user programs */
  12 /* NOTE !!!!!! WARNING !!!!!
  13  * All of the functions (except vmstats_print) whose names begin with '_'
  14  * assume that atomicity is ensured elsewhere
  15  * (i.e., outside of these routines) by acquiring stats_lock.
  16  * All of the functions whose names do not begin
  17  * with '_' ensure atomicity locally (except vmstats_print).
  18  *
  19  * Generally you will use the functions whose names
  20  * do not begin with '_'.
  21  */
  24 /* These are the different stats that get tracked.
  25  * See vmstats.c for strings corresponding to each stat.
  26  */
  28 /* DO NOT ADD OR CHANGE WITHOUT ALSO CHANGING vmstats.h */
  29 #define VMSTAT_TLB_FAULT              (0)
  30 #define VMSTAT_TLB_FAULT_FREE         (1)
  31 #define VMSTAT_TLB_FAULT_REPLACE      (2)
  32 #define VMSTAT_TLB_INVALIDATE         (3)
  33 #define VMSTAT_TLB_RELOAD             (4)
  34 #define VMSTAT_PAGE_FAULT_ZERO        (5)
  35 #define VMSTAT_PAGE_FAULT_DISK        (6)
  36 #define VMSTAT_ELF_FILE_READ          (7)
  37 #define VMSTAT_SWAP_FILE_READ         (8)
  38 #define VMSTAT_SWAP_FILE_WRITE        (9)
  39 #define VMSTAT_COUNT                 (10)
  41 /* ----------------------------------------------------------------------- */
  43 /* Initialize the statistics: must be called before using */
  44 void vmstats_init(void);                     /* uses locking */
  45 void _vmstats_init(void);                    /* atomicity must be ensured elsewhere */
  47 /* Increment the specified count 
  48  * Example use: 
  49  *   vmstats_inc(VMSTAT_TLB_FAULT);
  50  *   vmstats_inc(VMSTAT_PAGE_FAULT_ZERO);
  51  */
  52 void vmstats_inc(unsigned int index);    /* uses locking */
  53 void _vmstats_inc(unsigned int index);   /* atomicity must be ensured elsewhere */
  55 /* Print the statistics: assumes that at least vmstats_init has been called */
  56 void vmstats_print(void);                    /* Does NOT use locking */
  58 #endif /* VM_STATS_H */