52 lines
2.1 KiB
C
52 lines
2.1 KiB
C
/* This table has one slot per system process. It contains information for
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* servers and driver needed by the reincarnation server to keep track of
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* each process' status.
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*/
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/* Space reserved for program and arguments. */
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#define MAX_COMMAND_LEN 512 /* maximum argument string length */
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#define MAX_NR_ARGS 4 /* maximum number of arguments */
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#define MAX_RESCUE_DIR_LEN 64 /* maximum rescue dir length */
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/* Definition of the system process table. This table only has entries for
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* the servers and drivers, and thus is not directly indexed by slot number.
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*/
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extern struct rproc {
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int r_proc_nr; /* process slot number */
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pid_t r_pid; /* process id */
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dev_t r_dev_nr; /* major device number */
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int r_dev_style; /* device style */
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int r_restarts; /* number of restarts (initially zero) */
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long r_backoff; /* number of periods to wait before revive */
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unsigned r_flags; /* status and policy flags */
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long r_period; /* heartbeat period (or zero) */
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clock_t r_check_tm; /* timestamp of last check */
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clock_t r_alive_tm; /* timestamp of last heartbeat */
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clock_t r_stop_tm; /* timestamp of SIGTERM signal */
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char r_cmd[MAX_COMMAND_LEN]; /* raw command plus arguments */
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char *r_argv[MAX_NR_ARGS+2]; /* parsed arguments vector */
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int r_argc; /* number of arguments */
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} rproc[NR_SYS_PROCS];
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/* Mapping for fast access to the system process table. */
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extern struct rproc *rproc_ptr[NR_PROCS];
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extern int nr_in_use;
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/* Flag values. */
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#define RS_IN_USE 0x001 /* set when process slot is in use */
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#define RS_EXITING 0x002 /* set when exit is expected */
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#define RS_REFRESHING 0x004 /* set when refresh must be done */
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/* Constants determining RS period and binary exponential backoff. */
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#define RS_DELTA_T 60 /* check every T ticks */
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#define BACKOFF_BITS (sizeof(long)*8) /* bits in backoff field */
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#define MAX_BACKOFF 30 /* max backoff in RS_DELTA_T */
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/* Magic process table addresses. */
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#define BEG_RPROC_ADDR (&rproc[0])
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#define END_RPROC_ADDR (&rproc[NR_SYS_PROCS])
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#define NIL_RPROC ((struct mproc *) 0)
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