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# 2008 June 17
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
#
# $Id: mutex1.test,v 1.20 2009/04/23 14:58:40 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
ifcapable !mutex {
finish_test
return
}
if {[info exists tester_do_binarylog]} {
finish_test
return
}
sqlite3_reset_auto_extension
clear_mutex_counters
proc mutex_counters {varname} {
upvar $varname var
set var(total) 0
foreach {name value} [read_mutex_counters] {
set var($name) $value
incr var(total) $value
}
}
#-------------------------------------------------------------------------
# Tests mutex1-1.* test that sqlite3_config() returns SQLITE_MISUSE if
# is called at the wrong time. And that the first time sqlite3_initialize
# is called it obtains the 'static_master' mutex 3 times and a recursive
# mutex (sqlite3Config.pInitMutex) twice. Subsequent calls are no-ops
# that do not require any mutexes.
#
do_test mutex1-1.0 {
install_mutex_counters 1
} {SQLITE_MISUSE}
do_test mutex1-1.1 {
db close
install_mutex_counters 1
} {SQLITE_MISUSE}
do_test mutex1-1.2 {
sqlite3_shutdown
install_mutex_counters 1
} {SQLITE_OK}
do_test mutex1-1.3 {
install_mutex_counters 0
} {SQLITE_OK}
do_test mutex1-1.4 {
install_mutex_counters 1
} {SQLITE_OK}
do_test mutex1-1.5 {
mutex_counters counters
set counters(total)
} {0}
do_test mutex1-1.6 {
sqlite3_initialize
} {SQLITE_OK}
do_test mutex1-1.7 {
mutex_counters counters
# list $counters(total) $counters(static_master)
expr {$counters(total)>0}
} {1}
do_test mutex1-1.8 {
clear_mutex_counters
sqlite3_initialize
} {SQLITE_OK}
do_test mutex1-1.9 {
mutex_counters counters
list $counters(total) $counters(static_master)
} {0 0}
#-------------------------------------------------------------------------
# Tests mutex1-2.* test the three thread-safety related modes that
# can be selected using sqlite3_config:
#
# * Serialized mode,
# * Multi-threaded mode,
# * Single-threaded mode.
#
ifcapable threadsafe&&shared_cache {
set enable_shared_cache [sqlite3_enable_shared_cache 1]
foreach {mode mutexes} {
singlethread {}
multithread {
fast static_lru static_master static_mem static_open static_prng
static_pmem
}
serialized {
fast recursive static_lru static_master static_mem static_open
static_prng static_pmem
}
} {
do_test mutex1.2.$mode.1 {
catch {db close}
sqlite3_shutdown
sqlite3_config $mode
} SQLITE_OK
do_test mutex1.2.$mode.2 {
sqlite3_initialize
clear_mutex_counters
sqlite3 db test.db -nomutex 0 -fullmutex 0
catchsql { CREATE TABLE abc(a, b, c) }
db eval {
INSERT INTO abc VALUES(1, 2, 3);
}
} {}
ifcapable !memorymanage {
regsub { static_lru} $mutexes {} mutexes
}
do_test mutex1.2.$mode.3 {
mutex_counters counters
set res [list]
foreach {key value} [array get counters] {
if {$key ne "total" && $value > 0} {
lappend res $key
}
}
lsort $res
} [lsort $mutexes]
}
sqlite3_enable_shared_cache $enable_shared_cache
# Open and use a connection in "nomutex" mode. Test that no recursive
# mutexes are obtained.
do_test mutex1.3.1 {
catch {db close}
clear_mutex_counters
sqlite3 db test.db -nomutex 1
execsql { SELECT * FROM abc }
} {1 2 3 1 2 3 1 2 3}
do_test mutex1.3.2 {
mutex_counters counters
set counters(recursive)
} {0}
}
# Test the sqlite3_db_mutex() function.
#
do_test mutex1.4.1 {
catch {db close}
sqlite3 db test.db
enter_db_mutex db
db eval {SELECT 1, 2, 3}
} {1 2 3}
do_test mutex1.4.2 {
leave_db_mutex db
db eval {SELECT 1, 2, 3}
} {1 2 3}
do_test mutex1.4.3 {
catch {db close}
sqlite3 db test.db -nomutex 1
enter_db_mutex db
db eval {SELECT 1, 2, 3}
} {1 2 3}
do_test mutex1.4.4 {
leave_db_mutex db
db eval {SELECT 1, 2, 3}
} {1 2 3}
do_test mutex1-X {
catch {db close}
sqlite3_shutdown
clear_mutex_counters
install_mutex_counters 0
sqlite3_initialize
} {SQLITE_OK}
autoinstall_test_functions
finish_test
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