127 lines
5.5 KiB
C
127 lines
5.5 KiB
C
/* Global constants used in RS.
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*/
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#ifndef RS_CONST_H
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#define RS_CONST_H
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#define DEBUG_DEFAULT 0
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#define PRIV_DEBUG_DEFAULT 0
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#ifndef DEBUG
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#define DEBUG DEBUG_DEFAULT
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#endif
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#ifndef PRIV_DEBUG
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#define PRIV_DEBUG PRIV_DEBUG_DEFAULT
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#endif
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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_SCRIPT_LEN 256 /* maximum restart script name length */
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#define MAX_NR_ARGS 10 /* maximum number of arguments */
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#define MAX_IPC_LIST 256 /* Max size of list for IPC target
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* process names
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*/
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#define MAX_DET_RESTART 10 /* maximum number of detached restarts. */
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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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#define RS_NOPINGREPLY 0x008 /* service failed to reply to a ping request */
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#define RS_TERMINATED 0x010 /* service has terminated */
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#define RS_LATEREPLY 0x020 /* no reply sent to RS_DOWN caller yet */
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#define RS_INITIALIZING 0x040 /* set when init is in progress */
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#define RS_UPDATING 0x080 /* set when update is in progress */
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#define RS_PREPARE_DONE 0x100 /* set when updating and preparation is done */
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#define RS_INIT_DONE 0x200 /* set when updating and init is done */
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#define RS_INIT_PENDING 0x400 /* set when updating and init is pending */
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#define RS_ACTIVE 0x800 /* set for the active instance of a service */
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#define RS_DEAD 0x1000 /* set for an instance ready to be cleaned up */
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#define RS_CLEANUP_DETACH 0x2000 /* detach at cleanup time */
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#define RS_CLEANUP_SCRIPT 0x4000 /* run script at cleanup time */
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#define RS_REINCARNATE 0x8000 /* after exit, restart with a new endpoint */
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#define RS_SRV_IS_IDLE(S) (((S)->r_flags & RS_DEAD) || ((S)->r_flags & ~(RS_IN_USE|RS_ACTIVE|RS_CLEANUP_DETACH|RS_CLEANUP_SCRIPT)) == 0)
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/* Constants determining RS period and binary exponential backoff. */
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#define RS_INIT_T (system_hz * 10) /* allow T ticks for init */
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#define RS_DELTA_T (system_hz) /* 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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/* Constants for live update. */
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#define RS_DEFAULT_PREPARE_MAXTIME 2*RS_DELTA_T /* default prepare max time */
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/* Definitions for boot info tables. */
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#define NULL_BOOT_NR NR_BOOT_PROCS /* marks a null boot entry */
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#define DEFAULT_BOOT_NR NR_BOOT_PROCS /* marks the default boot entry */
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/* Define sys flags for the various process types. */
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#define SRV_SF (SF_CORE_SRV) /* system services */
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#define SRVR_SF (SRV_SF | SF_NEED_REPL) /* services needing a replica */
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#define DSRV_SF (0) /* dynamic system services */
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#define VM_SF (SRVR_SF) /* vm */
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/* Shorthands. */
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#define SRV_OR_USR(rp, X, Y) (rp->r_priv.s_flags & SYS_PROC ? X : Y)
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/* Reply flags. */
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#define RS_DONTREPLY 0
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#define RS_REPLY 1
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#define RS_CANCEL 2
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/* Swap flags. */
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#define RS_DONTSWAP 0
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#define RS_SWAP 1
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/* Configuration constants */
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#define RS_VM_DEFAULT_MAP_PREALLOC_LEN (1024*1024*8)
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#define RS_USE_PAGING 0
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/* Update macros. */
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#define RUPDATE_INIT() memset(&rupdate, 0, sizeof(rupdate))
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#define RUPDATE_CLEAR() RUPDATE_INIT()
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#define RUPDATE_ITER(HEAD, RPUPD_PREV, RPUPD, B) do { \
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RPUPD = HEAD; \
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RPUPD_PREV = NULL; \
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while(RPUPD) { \
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B \
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RPUPD_PREV = RPUPD; \
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RPUPD = RPUPD->next_rpupd; \
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} \
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} while(0)
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#define RUPDATE_REV_ITER(TAIL, RPUPD_PREV, RPUPD, B) do { \
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RPUPD = TAIL; \
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while(RPUPD) { \
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RPUPD_PREV = RPUPD->prev_rpupd; \
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B \
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RPUPD = RPUPD->prev_rpupd; \
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} \
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} while(0)
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#define RUPDATE_IS_UPDATING() (rupdate.flags & RS_UPDATING)
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#define RUPDATE_IS_VM_UPDATING() ((rupdate.flags & RS_UPDATING) && rupdate.vm_rpupd)
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#define RUPDATE_IS_VM_INIT_DONE() (rproc_ptr[_ENDPOINT_P(VM_PROC_NR)]->r_flags & RS_INIT_DONE)
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#define RUPDATE_IS_RS_UPDATING() ((rupdate.flags & RS_UPDATING) && rupdate.rs_rpupd)
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#define RUPDATE_IS_RS_INIT_DONE() (rproc_ptr[_ENDPOINT_P(RS_PROC_NR)]->r_flags & RS_INIT_DONE)
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#define RUPDATE_IS_INITIALIZING() (rupdate.flags & RS_INITIALIZING)
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#define RUPDATE_IS_UPD_SCHEDULED() (rupdate.num_rpupds > 0 && !RUPDATE_IS_UPDATING())
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#define RUPDATE_IS_UPD_MULTI() (rupdate.num_rpupds > 1)
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#define RUPDATE_IS_UPD_VM_MULTI() (rupdate.vm_rpupd && RUPDATE_IS_UPD_MULTI())
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#define SRV_IS_UPDATING(RP) ((RP)->r_flags & RS_UPDATING)
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#define SRV_IS_UPDATING_AND_INITIALIZING(RP) (((RP)->r_flags & (RS_UPDATING|RS_INITIALIZING)) == (RS_UPDATING|RS_INITIALIZING))
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#define UPD_INIT_MAXTIME(RPUPD) ((RPUPD)->prepare_maxtime != RS_DEFAULT_PREPARE_MAXTIME ? (RPUPD)->prepare_maxtime : RS_INIT_T)
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#define UPD_IS_PREPARING_ONLY(RPUPD) ((RPUPD)->lu_flags & SEF_LU_PREPARE_ONLY)
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#define SRV_IS_PREPARING_ONLY(RP) ((RP)->r_upd.rp && UPD_IS_PREPARING_ONLY(&(RP)->r_upd))
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#define UPD_IS_UPD_SCHEDULED(RPUPD) (RUPDATE_IS_UPD_SCHEDULED() && (RPUPD)->rp)
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#define SRV_IS_UPD_SCHEDULED(RP) UPD_IS_UPD_SCHEDULED(&(RP)->r_upd)
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#endif /* RS_CONST_H */
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