1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
-
-
+
|
;; Copyright 2006-2013, Matthew Welland.
;;
;; This program is made available under the GNU GPL version 2.0 or
;; greater. See the accompanying file COPYING for details.
;;
;; This program is distributed WITHOUT ANY WARRANTY; without even the
;; implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
;; PURPOSE.
(use sqlite3 srfi-18)
(import (prefix sqlite3 sqlite3:))
|
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
-
+
|
(define (lock-queue:delete-lock-db dbdat)
(let ((fname (lock-queue:db-dat-get-path dbdat)))
(system (conc "rm -f " fname "*"))))
(define (lock-queue:open-db fname #!key (count 10))
(let* ((actualfname (conc fname ".lockdb"))
(dbexists (file-exists? actualfname))
(dbexists (common:file-exists? actualfname))
(db (sqlite3:open-database actualfname))
(handler (make-busy-timeout 136000)))
(if dbexists
(vector db actualfname)
(begin
(handle-exceptions
exn
|
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
-
-
+
+
|
(lock-queue:release-lock fname test-id count: (- count 1)))
(let ((journal (conc fname "-journal")))
;; If we've tried ten times and failed there is a serious problem
;; try to remove the lock db and allow it to be recreated
(handle-exceptions
exn
#f
(if (file-exists? journal)(delete-file journal))
(if (file-exists? fname) (delete-file fname))
(if (common:file-exists? journal)(delete-file journal))
(if (common:file-exists? fname) (delete-file fname))
#f))))
(sqlite3:execute (lock-queue:db-dat-get-db dbdat) "DELETE FROM runlocks WHERE test_id=?;" test-id)
(sqlite3:finalize! (lock-queue:db-dat-get-db dbdat)))))
(define (lock-queue:steal-lock dbdat test-id #!key (count 10))
(debug:print-info 0 *default-log-port* "Attempting to steal lock at " (lock-queue:db-dat-get-path dbdat))
(tasks:wait-on-journal (lock-queue:db-dat-get-path dbdat) 1200 "lock-queue:steal-lock; waiting on journal")
|