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/*
* This file defines the interface between top and the machine-dependent
* module. It is NOT machine dependent and should not need to be changed
* for any specific machine.
*
* Copyright (c) 2007-2019, Mark Wong
* Portions Copyright (c) 2013 VMware, Inc. All Rights Reserved.
*/
#ifndef _MACHINE_H_
#define _MACHINE_H_
#include <time.h>
#include <sys/types.h>
#include "pg.h"
#include "pg_config_manual.h"
/*
#ifdef CLK_TCK
# define HZ CLK_TCK
# else
# define HZ 60
# endif
*/
#ifndef HZ
#define HZ sysconf(_SC_CLK_TCK)
#endif
/* Display modes. */
#define MODE_PROCESSES 0
#define MODE_IO_STATS 3
/* Display modes for table and index statistics. */
#define STATS_DIFF 0
#define STATS_CUMULATIVE 1
/* Maximum number of columns allowed for display */
#define MAX_COLS 255
/*
* The entire display is based on these next numbers being defined as is.
*/
#define NUM_AVERAGES 3
#define NPROCSTATES 7
/*
* The statics struct is filled in by machine_init. Fields marked as
* "optional" are not filled in by every module.
*/
struct statics
{
char **procstate_names;
char **cpustate_names;
char **memory_names;
char **swap_names; /* optional */
char **order_names; /* optional */
char **color_names; /* optional */
time_t boottime; /* optional */
int ncpus;
struct
{
unsigned int fullcmds:1;
unsigned int idle:1;
unsigned int warmup:1;
} flags;
};
/*
* the system_info struct is filled in by a machine dependent routine.
*/
#ifdef p_active /* uw7 define macro p_active */
#define P_ACTIVE p_pactive
#else
#define P_ACTIVE p_active
#endif
struct system_info
{
int last_pid;
double load_avg[NUM_AVERAGES];
int p_total;
int P_ACTIVE; /* number of procs considered "active" */
int *procstates;
int64_t *cpustates;
long *memory;
long *swap;
};
/* cpu_states is an array of percentages * 10. For example,
the (integer) value 105 is 10.5% (or .105).
*/
/*
* Database activity information
*/
struct db_info {
int numDb;
int64_t numXact;
int64_t numRollback;
int64_t numBlockRead;
int64_t numBlockHit;
int64_t numTupleFetched;
int64_t numTupleAltered;
int64_t numConflict;
};
/*
* Info on reads/writes happening on disk.
* On Linux, this can be obtained from /proc/diskstats.
*/
struct io_info {
int64_t reads;
int64_t readsectors;
int64_t writes;
int64_t writesectors;
};
/*
* the process_select struct tells get_process_info what processes we
* are interested in seeing
*/
struct process_select
{
int idle; /* show idle processes */
int fullcmd; /* show full command */
char *command; /* only this command (unless == NULL) */
char usename[NAMEDATALEN + 1]; /* only this postgres usename */
};
/* routines defined by the machine dependent module */
int machine_init(struct statics *);
void get_system_info(struct system_info *);
#ifdef __linux__
caddr_t get_process_info(struct system_info *, struct process_select *, int,
struct pg_conninfo_ctx *, int);
#else
caddr_t get_process_info(struct system_info *, struct process_select *, int,
char *);
#endif /* __linux__ */
void get_database_info(struct db_info *, struct pg_conninfo_ctx *);
void get_io_info(struct io_info *);
char *format_header(char *);
char *format_next_io(caddr_t);
char *format_next_process(caddr_t);
uid_t proc_owner(pid_t);
void update_state(int *pgstate, char *state);
void update_str(char **, char *);
extern int mode_stats;
extern char *backendstatenames[];
extern char *procstatenames[];
#endif /* _MACHINE_H_ */
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