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Fix a race condition in the sorter.

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FossilOrigin-Name: 32ccf3ae18531682dfd039fa8df6ad9a907ac455
This commit is contained in:
dan
2014-05-03 19:33:00 +00:00
parent 0d51def29e
commit e18e90ebaf
5 changed files with 55 additions and 25 deletions
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38
test/sortfault.test
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@ -23,27 +23,45 @@ do_execsql_test 1.0 {
PRAGMA cache_size = 5;
}
foreach {tn mmap_limit} {
1 0
2 100000
foreach {tn mmap_limit nWorker tmpstore threadsmode fakeheap} {
1 0 0 file multithread false
2 100000 0 file multithread false
} {
catch { db close }
sqlite3_shutdown
sqlite3_config_worker_threads $nWorker
sqlite3_config $threadsmode
sqlite3_initialize
sorter_test_fakeheap $fakeheap
set str [string repeat a 1000]
do_faultsim_test 1.$tn -prep {
sqlite3 db test.db
sqlite3_test_control SQLITE_TESTCTRL_SORTER_MMAP db $::mmap_limit
execsql { PRAGMA cache_size = 5 }
} -body {
execsql {
WITH r(x,y) AS (
SELECT 1, randomblob(1000)
SELECT 1, $::str
UNION ALL
SELECT x+1, randomblob(1000) FROM r
LIMIT 500
)
SELECT count(x), length(y) FROM r GROUP BY (x%5)
}
SELECT x+1, $::str FROM r
LIMIT 200
)
SELECT count(x), length(y) FROM r GROUP BY (x%5)
}
} -test {
faultsim_test_result {0 {100 1000 100 1000 100 1000 100 1000 100 1000}}
faultsim_test_result {0 {40 1000 40 1000 40 1000 40 1000 40 1000}}
}
}
catch { db close }
sqlite3_shutdown
sqlite3_config_worker_threads 0
set t(0) singlethread
set t(1) multithread
set t(2) serialized
sqlite3_config $t($sqlite_options(threadsafe))
sqlite3_initialize
finish_test