test/mutex1.test

# 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 1.5 2008/06/26 08:29:35 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl
sqlite3_reset_auto_extension

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)
} {6 3}

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 {
  foreach {mode mutexes} {
    singlethread {}
    multithread  {fast static_master static_mem static_prng}
    serialized   {fast recursive static_master static_mem static_prng}
  } {
    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
      catchsql { CREATE TABLE abc(a, b, c) }
      db eval {
        INSERT INTO abc VALUES(1, 2, 3);
      }
    } {}
  
    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
    } $mutexes
  }
}

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