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(dbname #f) ;; .megatest/1.db
(mtdbfile #f) ;; mtrah/.megatest/1.db
(mtdbdat #f) ;; only need one of these for syncing
;; (dbdats (make-hash-table)) ;; id => dbdat
(tmpdbfile #f) ;; /tmp/.../.megatest/1.db
;; (refndbfile #f) ;; /tmp/.../.megatest/1.db_ref
(dbstack (make-stack)) ;; stack for tmp dbr:dbdat,
(homehost #f) ;; not used yet
(on-homehost #f) ;; not used yet
(read-only #f)
(last-sync 0)
(last-write (current-seconds))
) ;; goal is to converge on one struct for an area but for now it is too confusing
;; need to keep dbhandles and cached statements together
(defstruct dbr:dbdat
(dbfile #f)
(dbh #f)
(stmt-cache (make-hash-table))
(read-only #f)
(birth-sec (current-seconds)))
(define *dbstruct-dbs* #f)
(define *db-open-mutex* (make-mutex))
(define *db-access-mutex* (make-mutex)) ;; used in common.scm
(define *no-sync-db* #f)
(define *db-sync-in-progress* #f)
(define *db-with-db-mutex* (make-mutex))
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(dbname #f) ;; .megatest/1.db
(mtdbfile #f) ;; mtrah/.megatest/1.db
(mtdbdat #f) ;; only need one of these for syncing
;; (dbdats (make-hash-table)) ;; id => dbdat
(tmpdbfile #f) ;; /tmp/.../.megatest/1.db
;; (refndbfile #f) ;; /tmp/.../.megatest/1.db_ref
(dbstack (make-stack)) ;; stack for tmp dbr:dbdat,
(stack-mutex (make-mutex)) ;; gate pop, push, peek and replace with this mutex (allows safe clean up of old handles)
(homehost #f) ;; not used yet
(on-homehost #f) ;; not used yet
(read-only #f)
(last-sync 0)
(last-write (current-seconds))
) ;; goal is to converge on one struct for an area but for now it is too confusing
;; need to keep dbhandles and cached statements together
(defstruct dbr:dbdat
(dbfile #f)
(dbh #f)
(stmt-cache (make-hash-table))
(read-only #f)
(birth-sec (current-seconds))
(last-used (current-seconds))
(in-use #f))
(define *dbstruct-dbs* #f)
(define *db-open-mutex* (make-mutex))
(define *db-access-mutex* (make-mutex)) ;; used in common.scm
(define *no-sync-db* #f)
(define *db-sync-in-progress* #f)
(define *db-with-db-mutex* (make-mutex))
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(dbfile:print-err "db:safely-close-sqlite3-db: " db " is not an sqlite3 db")
#f
)
))))
;; close all opened run-id dbs
(define (db:close-all dbstruct)
(if (dbr:dbstruct? dbstruct)
;; (handle-exceptions
;; exn
;; (begin
;; (debug:print 0 *default-log-port* "WARNING: Finalizing failed, " ((condition-property-accessor 'exn 'message) exn) ", note - exn=" exn)
;; (print-call-chain *default-log-port*))
;; (db:sync-touched dbstruct 0 force-sync: #t) ;; NO. Do not do this here. Instead we rely on a server to be started when there are writes, even if the server itself is not going to be used as a server.
(let* ((subdbs (hash-table-values (dbr:dbstruct-subdbs dbstruct))))
(for-each
(lambda (subdb)
(let* ((tdbs (stack->list (dbr:subdb-dbstack subdb)))
(mtdbdat (dbr:dbdat-dbh (dbr:subdb-mtdbdat subdb)))
#;(rdb (dbr:dbdat-dbh (dbr:subdb-refndb subdb))))
(map (lambda (dbdat)
(let* ((stmt-cache (dbr:dbdat-stmt-cache dbdat))
(dbh (dbr:dbdat-dbh dbdat)))
(db:safely-close-sqlite3-db dbh stmt-cache)))
tdbs)
(db:safely-close-sqlite3-db mtdbdat (dbr:dbdat-stmt-cache (dbr:subdb-mtdbdat subdb)))
;; (if (sqlite3:database? mdb) (sqlite3:finalize! mdb))
#;(db:safely-close-sqlite3-db rdb #f))) ;; stmt-cache))))) ;; (if (sqlite3:database? rdb) (sqlite3:finalize! rdb))))))
subdbs)
#t
)
#f
)
)
;; ;; set up a single db (e.g. main.db, 1.db ... etc.)
;; ;;
;; (define (db:setup-db dbstruct areapath run-id)
;; (let* ((dbname (db:run-id->dbname run-id))
;; (dbstruct (hash-table-ref/default dbstructs dbname #f)))
;; (if dbstruct
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(dbfile:print-err "db:safely-close-sqlite3-db: " db " is not an sqlite3 db")
#f
)
))))
;; close all opened run-id dbs
(define (db:close-all dbstruct)
(assert (dbr:dbstruct? dbstruct) "FATAL: db:close-all called with non-dbstruct "dbstruct)
(let* ((subdbs (hash-table-values (dbr:dbstruct-subdbs dbstruct))))
(for-each
(lambda (subdb)
(mutex-lock! (dbr:subdb-stack-mutex subdb))
(let* ((tdbs (stack->list (dbr:subdb-dbstack subdb)))
(mtdbdat (dbr:dbdat-dbh (dbr:subdb-mtdbdat subdb))))
(map (lambda (dbdat)
(let* ((stmt-cache (dbr:dbdat-stmt-cache dbdat))
(dbh (dbr:dbdat-dbh dbdat)))
(db:safely-close-sqlite3-db dbh stmt-cache)))
tdbs)
(db:safely-close-sqlite3-db mtdbdat (dbr:dbdat-stmt-cache (dbr:subdb-mtdbdat subdb))))
(mutex-unlock! (dbr:subdb-stack-mutex subdb)))
subdbs)))
;; close opened run-id dbs that haven't been used in age seconds
(define (db:close-old dbstruct #!key (age 30)) ;; close dbs older than this age
(assert (dbr:dbstruct? dbstruct) "FATAL: db:close-all called with non-dbstruct "dbstruct)
(let* ((subdbs (hash-table-values (dbr:dbstruct-subdbs dbstruct))))
(for-each
(lambda (subdb)
(mutex-lock! (dbr:subdb-stack-mutex subdb))
(let* ((tdbs (stack->list (dbr:subdb-dbstack subdb)))
(mtdbdat (dbr:dbdat-dbh (dbr:subdb-mtdbdat subdb))))
(dbr:subdb-dbstack-set! subdb (make-stack)) ;; replace the stack with a new one
(map (lambda (dbdat)
(assert (dbr:dbdat-in-use dbdat) "FATAL: dbdat in stack was in use "(dbr:dbdat-dbfile dbdat))
(if (< (- (current-seconds)
(dbr:dbdat-last-used dbdat))
age)
(stack-push! (dbr:subdb-dbstack subdb) dbdat) ;; keep it
(let* ((stmt-cache (dbr:dbdat-stmt-cache dbdat)) ;; close and discard
(dbh (dbr:dbdat-dbh dbdat)))
(dbfile:print-err "INFO: closing unused dbdat for "(dbr:dbdat-dbfile dbdat))
(db:safely-close-sqlite3-db dbh stmt-cache))))
tdbs)
(let* ((size (stack-count (dbr:subdb-dbstack subdb)))
(delta (- (length tdbs) size)))
(if (> delta 0)
(dbfile:print-err "INFO: removed "delta" and "size" dbs left."))))
(mutex-unlock! (dbr:subdb-stack-mutex subdb)))
subdbs)))
;; ;; set up a single db (e.g. main.db, 1.db ... etc.)
;; ;;
;; (define (db:setup-db dbstruct areapath run-id)
;; (let* ((dbname (db:run-id->dbname run-id))
;; (dbstruct (hash-table-ref/default dbstructs dbname #f)))
;; (if dbstruct
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;; if run-id is a string treat it as a filename
;; if db already open - return inmem
;; if db not open, open inmem, rundb and sync then return inmem
;; inuse gets set automatically for rundb's
;;
(define (dbfile:get-dbdat dbstruct run-id)
(let* ((subdb (dbfile:get-subdb dbstruct run-id)))
(if (stack-empty? (dbr:subdb-dbstack subdb))
#f
(begin
(stack-pop! (dbr:subdb-dbstack subdb))))))
;; return a previously opened db handle to the stack of available handles
(define (dbfile:add-dbdat dbstruct run-id dbdat)
(let* ((subdb (dbfile:get-subdb dbstruct run-id)))
(stack-push! (dbr:subdb-dbstack subdb) dbdat)
dbdat))
;; set up a subdb
;;
(define (dbfile:init-subdb dbstruct run-id init-proc)
(let* ((dbname (dbfile:run-id->dbname run-id))
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;; if run-id is a string treat it as a filename
;; if db already open - return inmem
;; if db not open, open inmem, rundb and sync then return inmem
;; inuse gets set automatically for rundb's
;;
(define (dbfile:get-dbdat dbstruct run-id)
(let* ((subdb (dbfile:get-subdb dbstruct run-id)))
(mutex-lock! (dbr:subdb-stack-mutex subdb))
(let* ((res (if (stack-empty? (dbr:subdb-dbstack subdb))
#f
(let ((dbdat (stack-pop! (dbr:subdb-dbstack subdb))))
(dbr:dbdat-last-used-set! dbdat (current-seconds))
(dbr:dbdat-in-use-set! dbdat #t)
dbdat))))
(mutex-unlock! (dbr:subdb-stack-mutex subdb))
res)))
;; return a previously opened db handle to the stack of available handles
(define (dbfile:add-dbdat dbstruct run-id dbdat)
(let* ((subdb (dbfile:get-subdb dbstruct run-id)))
(dbr:dbdat-in-use-set! dbdat #f)
(stack-push! (dbr:subdb-dbstack subdb) dbdat)
dbdat))
;; set up a subdb
;;
(define (dbfile:init-subdb dbstruct run-id init-proc)
(let* ((dbname (dbfile:run-id->dbname run-id))
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