/*
 * pidstat: Display per-process statistics.
 * (C) 2007 by Sebastien Godard (sysstat <at> orange.fr)
 */

#ifndef _PIDSTAT_H
#define _PIDSTAT_H


#define K_SELF		"SELF"

#define K_P_TASK	"TASK"
#define K_P_CHILD	"CHILD"
#define K_P_ALL		"ALL"

#define NR_PID_PREALLOC	10

#define MAX_COMM_LEN	16

/* Activities */
#define P_A_CPU		0x01
#define P_A_MEM		0x02
#define P_A_IO		0x04
#define P_A_CTXSW	0x08

#define DISPLAY_CPU(m)		(((m) & P_A_CPU) == P_A_CPU)
#define DISPLAY_MEM(m)		(((m) & P_A_MEM) == P_A_MEM)
#define DISPLAY_IO(m)		(((m) & P_A_IO) == P_A_IO)
#define DISPLAY_CTXSW(m)	(((m) & P_A_CTXSW) == P_A_CTXSW)

/* TASK/CHILD */
#define P_NULL		0x00
#define P_TASK		0x01
#define P_CHILD		0x02

#define DISPLAY_TASK_STATS(m)	(((m) & P_TASK) == P_TASK)
#define DISPLAY_CHILD_STATS(m)	(((m) & P_CHILD) == P_CHILD)

#define P_D_PID		0x01
#define P_D_ALL_PID	0x02
#define P_F_IRIX_MODE	0x04
#define P_F_COMMSTR	0x08
#define P_D_ACTIVE_PID	0x10
#define P_D_TID		0x20

#define DISPLAY_PID(m)		(((m) & P_D_PID) == P_D_PID)
#define DISPLAY_ALL_PID(m)	(((m) & P_D_ALL_PID) == P_D_ALL_PID)
#define IRIX_MODE_OFF(m)	(((m) & P_F_IRIX_MODE) == P_F_IRIX_MODE)
#define COMMAND_STRING(m)	(((m) & P_F_COMMSTR) == P_F_COMMSTR)
#define DISPLAY_ACTIVE_PID(m)	(((m) & P_D_ACTIVE_PID) == P_D_ACTIVE_PID)
#define DISPLAY_TID(m)		(((m) & P_D_TID) == P_D_TID)

#define F_NO_PID_IO	0x01

#define NO_PID_IO(m)		(((m) & F_NO_PID_IO) == F_NO_PID_IO)

#define PROC		"/proc"
#define PROC_PID	"/proc/%u"
#define PID_STAT	"/proc/%u/stat"
#define PID_STATUS	"/proc/%u/status"
#define PID_IO		"/proc/%u/io"
#define PROC_TASK	"/proc/%u/task"
#define TASK_STAT	"/proc/%u/task/%u/stat"
#define TASK_STATUS	"/proc/%u/task/%u/status"
#define TASK_IO		"/proc/%u/task/%u/io"

#define PRINT_ID_HDR(_timestamp_, _flag_)	do {				\
						printf("\n%-11s       PID",	\
						       _timestamp_);		\
   						if (DISPLAY_TID(_flag_))	\
							printf("       TID");	\
						} while (0)

#define PRINT_COMM(_psti_)	printf("  %s%s\n",			\
				      (_psti_->tgid ? "|__" : ""),	\
				       _psti_->comm)

struct pid_stats {
	unsigned long long read_bytes			__attribute__ ((aligned (8)));
	unsigned long long write_bytes			__attribute__ ((packed));
	unsigned long long cancelled_write_bytes	__attribute__ ((packed));
	unsigned long long total_vsz			__attribute__ ((packed));
	unsigned long long total_rss			__attribute__ ((packed));
	unsigned long      minflt			__attribute__ ((packed));
	unsigned long      cminflt			__attribute__ ((packed));
	unsigned long      majflt			__attribute__ ((packed));
	unsigned long      cmajflt			__attribute__ ((packed));
	unsigned long      utime			__attribute__ ((packed));
	unsigned long      cutime			__attribute__ ((packed));
	unsigned long      stime			__attribute__ ((packed));
	unsigned long      cstime			__attribute__ ((packed));
	unsigned long      gtime			__attribute__ ((packed));
	unsigned long      cgtime			__attribute__ ((packed));
	unsigned long      vsz				__attribute__ ((packed));
	unsigned long      rss				__attribute__ ((packed));
	unsigned long      nvcsw			__attribute__ ((packed));
	unsigned long      nivcsw			__attribute__ ((packed));
	/* If pid is null, the process has terminated */
	unsigned int       pid				__attribute__ ((packed));
	/* If tgid is not null, then this PID is in fact a TID */
	unsigned int       tgid				__attribute__ ((packed));
	unsigned int       rt_asum_count		__attribute__ ((packed));
	unsigned int       rc_asum_count		__attribute__ ((packed));
	unsigned int       uc_asum_count		__attribute__ ((packed));
	unsigned int       processor			__attribute__ ((packed));
	unsigned int       flags			__attribute__ ((packed));
	char               comm[MAX_COMM_LEN];
};

#define PID_STATS_SIZE	(sizeof(struct pid_stats))

#endif  /* _PIDSTAT_H */
