minix/servers/pm/mproc.h
Jorrit Herder 322ec9ef8b Moved stime, time, times POSIX calls from FS to PM. Removed child time
accounting from kernel (now in PM).  Large amount of files in this commit
is due to system time problems during development.
2005-05-31 09:50:51 +00:00

68 lines
3.2 KiB
C

/* This table has one slot per process. It contains all the process management
* information for each process. Among other things, it defines the text, data
* and stack segments, uids and gids, and various flags. The kernel and file
* systems have tables that are also indexed by process, with the contents
* of corresponding slots referring to the same process in all three.
*/
EXTERN struct mproc {
struct mem_map mp_seg[NR_LOCAL_SEGS]; /* points to text, data, stack */
char mp_exitstatus; /* storage for status when process exits */
char mp_sigstatus; /* storage for signal # for killed procs */
pid_t mp_pid; /* process id */
pid_t mp_procgrp; /* pid of process group (used for signals) */
pid_t mp_wpid; /* pid this process is waiting for */
int mp_parent; /* index of parent process */
/* Child user and system times. Accounting done on child exit. */
clock_t mp_child_utime; /* cumulative user time of children */
clock_t mp_child_stime; /* cumulative sys time of children */
/* Real and effective uids and gids. */
uid_t mp_realuid; /* process' real uid */
uid_t mp_effuid; /* process' effective uid */
gid_t mp_realgid; /* process' real gid */
gid_t mp_effgid; /* process' effective gid */
/* File identification for sharing. */
ino_t mp_ino; /* inode number of file */
dev_t mp_dev; /* device number of file system */
time_t mp_ctime; /* inode changed time */
/* Signal handling information. */
sigset_t mp_ignore; /* 1 means ignore the signal, 0 means don't */
sigset_t mp_catch; /* 1 means catch the signal, 0 means don't */
sigset_t mp_sigmask; /* signals to be blocked */
sigset_t mp_sigmask2; /* saved copy of mp_sigmask */
sigset_t mp_sigpending; /* pending signals to be handled */
struct sigaction mp_sigact[_NSIG + 1]; /* as in sigaction(2) */
vir_bytes mp_sigreturn; /* address of C library __sigreturn function */
/* Backwards compatibility for signals. */
sighandler_t mp_func; /* all sigs vectored to a single user fcn */
unsigned mp_flags; /* flag bits */
vir_bytes mp_procargs; /* ptr to proc's initial stack arguments */
struct mproc *mp_swapq; /* queue of procs waiting to be swapped in */
message mp_reply; /* reply message to be sent to one */
char mp_name[PROC_NAME_LEN]; /* process name */
} mproc[NR_PROCS];
/* Flag values */
#define IN_USE 0x001 /* set when 'mproc' slot in use */
#define WAITING 0x002 /* set by WAIT system call */
#define ZOMBIE 0x004 /* set by EXIT, cleared by WAIT */
#define PAUSED 0x008 /* set by PAUSE system call */
#define ALARM_ON 0x010 /* set when SIGALRM timer started */
#define SEPARATE 0x020 /* set if file is separate I & D space */
#define TRACED 0x040 /* set if process is to be traced */
#define STOPPED 0x080 /* set if process stopped for tracing */
#define SIGSUSPENDED 0x100 /* set by SIGSUSPEND system call */
#define REPLY 0x200 /* set if a reply message is pending */
#define ONSWAP 0x400 /* set if data segment is swapped out */
#define SWAPIN 0x800 /* set if on the "swap this in" queue */
#define DONT_SWAP 0x1000 /* never swap out this process */
#define NIL_MPROC ((struct mproc *) 0)