52 lines
2 KiB
C
52 lines
2 KiB
C
|
/* This table has one slot per system process. It contains information for
|
||
|
|
* servers and driver needed by the reincarnation server to keep track of
|
||
|
|
* each process' status.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Space reserved for program and arguments. */
|
||
|
|
#define MAX_COMMAND_LEN 512 /* maximum argument string length */
|
||
|
|
#define MAX_NR_ARGS 4 /* maximum number of arguments */
|
||
|
|
|
||
|
|
/* Definition of the system process table. This table only has entries for
|
||
|
|
* the servers and drivers, and thus is not directly indexed by slot number.
|
||
|
|
*/
|
||
|
|
extern struct rproc {
|
||
|
|
int r_proc_nr; /* process slot number */
|
||
|
|
pid_t r_pid; /* process id */
|
||
|
|
dev_t r_dev_nr; /* major device number */
|
||
|
|
int r_dev_style; /* device style */
|
||
|
|
|
||
|
|
int r_restarts; /* number of restarts (initially zero) */
|
||
|
|
long r_backoff; /* number of periods to wait before revive */
|
||
|
|
unsigned r_flags; /* status and policy flags */
|
||
|
|
|
||
|
|
long r_period; /* heartbeat period (or zero) */
|
||
|
|
clock_t r_check_tm; /* timestamp of last check */
|
||
|
|
clock_t r_alive_tm; /* timestamp of last heartbeat */
|
||
|
|
clock_t r_stop_tm; /* timestamp of SIGTERM signal */
|
||
|
|
|
||
|
|
char r_cmd[MAX_COMMAND_LEN]; /* raw command plus arguments */
|
||
|
|
char *r_argv[MAX_NR_ARGS+2]; /* parsed arguments vector */
|
||
|
|
int r_argc; /* number of arguments */
|
||
|
|
} rproc[NR_SYS_PROCS];
|
||
|
|
|
||
|
|
/* Mapping for fast access to the system process table. */
|
||
|
|
extern struct rproc *rproc_ptr[NR_PROCS];
|
||
|
|
extern int nr_in_use;
|
||
|
|
|
||
|
|
/* Flag values. */
|
||
|
|
#define RS_IN_USE 0x001 /* set when process slot is in use */
|
||
|
|
#define RS_EXITING 0x002 /* set when exit is expected */
|
||
|
|
#define RS_REFRESHING 0x004 /* set when refresh must be done */
|
||
|
|
|
||
|
|
/* Constants determining RS period and binary exponential backoff. */
|
||
|
|
#define RS_DELTA_T 60 /* check every T ticks */
|
||
|
|
#define BACKOFF_BITS (sizeof(long)*8) /* bits in backoff field */
|
||
|
|
#define MAX_BACKOFF 30 /* max backoff in RS_DELTA_T */
|
||
|
|
|
||
|
|
/* Magic process table addresses. */
|
||
|
|
#define BEG_RPROC_ADDR (&rproc[0])
|
||
|
|
#define END_RPROC_ADDR (&rproc[NR_SYS_PROCS])
|
||
|
|
#define NIL_RPROC ((struct mproc *) 0)
|
||
|
|
|