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Added support for proxy file locking style

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Added pragma support for controlling proxy file locking
Added file control access to last errno and proxy locking
Added support for TMPDIR environment variable
Extended unit tests to cover new proxy locking pragmas and file control features (CVS 5934)

FossilOrigin-Name: b9bc36d3d5e35821ef69c0881a84c0afed253c9e
This commit is contained in:
aswift
2008-11-21 00:10:35 +00:00
parent d164fd3483
commit aebf413d9a
15 changed files with 1580 additions and 200 deletions
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21
test/shared.test
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@ -9,7 +9,7 @@
#
#***********************************************************************
#
# $Id: shared.test,v 1.34 2008/07/12 14:52:20 drh Exp $
# $Id: shared.test,v 1.35 2008/11/21 00:10:35 aswift Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
@ -42,6 +42,20 @@ ifcapable autovacuum {
}
}
# if we're using proxy locks, we use 2 filedescriptors for a db
# that is open but NOT yet locked, after a lock is taken we'll have 3,
# normally sqlite uses 1 (proxy locking adds the conch and the local lock)
set using_proxy 0
foreach {name value} [array get env SQLITE_FORCE_PROXY_LOCKING] {
set using_proxy $value
}
set extrafds_prelock 0
set extrafds_postlock 0
if {$using_proxy>0} {
set extrafds_prelock 1
set extrafds_postlock 2
}
# $av is currently 0 if this loop iteration is to test with auto-vacuum turned
# off, and 1 if it is turned on. Increment it so that (1 -> no auto-vacuum)
# and (2 -> auto-vacuum). The sole reason for this is so that it looks nicer
@ -74,6 +88,7 @@ do_test shared-$av.1.1 {
# opened.
sqlite3 db2 test.db
set ::sqlite_open_file_count
expr $sqlite_open_file_count-$extrafds_postlock
} {1}
do_test shared-$av.1.2 {
# Add a table and a single row of data via the first connection.
@ -154,6 +169,7 @@ do_test shared-$av.2.1 {
sqlite3 db3 TEST.DB
}
set ::sqlite_open_file_count
expr $sqlite_open_file_count-($extrafds_prelock+$extrafds_postlock)
} {2}
do_test shared-$av.2.2 {
# Start read transactions on db and db2 (the shared pager cache). Ensure
@ -284,14 +300,17 @@ sqlite3 db test.db
sqlite3 db2 test2.db
do_test shared-$av.4.1.1 {
set sqlite_open_file_count
expr $sqlite_open_file_count-($extrafds_prelock*2)
} {2}
do_test shared-$av.4.1.2 {
execsql {ATTACH 'test2.db' AS test2}
set sqlite_open_file_count
expr $sqlite_open_file_count-($extrafds_postlock*2)
} {2}
do_test shared-$av.4.1.3 {
execsql {ATTACH 'test.db' AS test} db2
set sqlite_open_file_count
expr $sqlite_open_file_count-($extrafds_postlock*2)
} {2}
# Sanity check: Create a table in ./test.db via handle db, and test that handle