diff -r 000000000000 -r 08ec8eefde2f persistentstorage/sqlite3api/TEST/TclScript/thread_common.tcl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/persistentstorage/sqlite3api/TEST/TclScript/thread_common.tcl	Fri Jan 22 11:06:30 2010 +0200
@@ -0,0 +1,88 @@
+# 2007 September 10
+#
+# 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: thread_common.tcl,v 1.2 2007/09/10 10:53:02 danielk1977 Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+if {[info commands sqlthread] eq ""} {
+  puts -nonewline "Skipping thread-safety tests - "
+  puts            " not running a threadsafe sqlite/tcl build"
+  puts -nonewline "Both SQLITE_THREADSAFE and TCL_THREADS must be defined when"
+  puts            " building testfixture"
+  finish_test
+  return
+}
+
+# The following script is sourced by every thread spawned using 
+# [sqlthread spawn]:
+set thread_procs {
+
+  # Execute the supplied SQL using database handle $::DB.
+  #
+  proc execsql {sql} {
+
+    set rc SQLITE_LOCKED
+    while {$rc eq "SQLITE_LOCKED" 
+        || $rc eq "SQLITE_BUSY" 
+        || $rc eq "SQLITE_SCHEMA"} {
+      set res [list]
+
+      set err [catch {
+        set ::STMT [sqlite3_prepare_v2 $::DB $sql -1 dummy_tail]
+      } msg]
+
+      if {$err == 0} {
+        while {[set rc [sqlite3_step $::STMT]] eq "SQLITE_ROW"} {
+          for {set i 0} {$i < [sqlite3_column_count $::STMT]} {incr i} {
+            lappend res [sqlite3_column_text $::STMT 0]
+          }
+        }
+        set rc [sqlite3_finalize $::STMT]
+      } else {
+        if {[string first (6) $msg]} {
+          set rc SQLITE_LOCKED
+        } else {
+          set rc SQLITE_ERROR
+        }
+      }
+
+      if {[string first locked [sqlite3_errmsg $::DB]]>=0} {
+        set rc SQLITE_LOCKED
+      }
+
+      if {$rc eq "SQLITE_LOCKED" || $rc eq "SQLITE_BUSY"} {
+ #puts -nonewline "([sqlthread id] $rc)"
+ #flush stdout
+        after 20
+      }
+    }
+
+    if {$rc ne "SQLITE_OK"} {
+      error "$rc - [sqlite3_errmsg $::DB]"
+    }
+    set res
+  }
+
+  proc do_test {name script result} {
+    set res [eval $script]
+    if {$res ne $result} {
+      error "$name failed: expected \"$result\" got \"$res\""
+    }
+  }
+}
+
+proc thread_spawn {varname args} {
+  sqlthread spawn $varname [join $args ;]
+}
+
+return 0