[sqlite] Remove obsolete reference version 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/test/thread003.test

-# 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.
-#
-#***********************************************************************
-#
-#   This file contains tests that attempt to break the pcache module
-#   by bombarding it with simultaneous requests from multiple threads.
-#     
-# $Id: thread003.test,v 1.8 2009/03/26 14:48:07 danielk1977 Exp $
-
-set testdir [file dirname $argv0]
-
-source $testdir/tester.tcl
-if {[run_thread_tests]==0} { finish_test ; return }
-
-# Set up a couple of different databases full of pseudo-randomly 
-# generated data.
-#
-do_test thread003.1.1 {
-  execsql {
-    BEGIN;
-    CREATE TABLE t1(a, b, c);
-  }
-  for {set ii 0} {$ii < 5000} {incr ii} {
-    execsql {INSERT INTO t1 VALUES($ii, randomblob(200), randomblob(200))}
-  }
-  execsql { 
-    CREATE INDEX i1 ON t1(a, b); 
-    COMMIT;
-  }
-} {}
-do_test thread003.1.2 {
-  expr {([file size test.db] / 1024) > 2000}
-} {1}
-do_test thread003.1.3 {
-  db close
-  forcedelete test2.db
-  sqlite3 db test2.db
-} {}
-do_test thread003.1.4 {
-  execsql {
-    BEGIN;
-    CREATE TABLE t1(a, b, c);
-  }
-  for {set ii 0} {$ii < 5000} {incr ii} {
-    execsql {INSERT INTO t1 VALUES($ii, randomblob(200), randomblob(200))}
-  }
-  execsql { 
-    CREATE INDEX i1 ON t1(a, b); 
-    COMMIT;
-  }
-} {}
-do_test thread003.1.5 {
-  expr {([file size test.db] / 1024) > 2000}
-} {1}
-do_test thread003.1.6 {
-  db close
-} {}
-
-
-# This test opens a connection on each of the large (>2MB) database files
-# created by the previous block. The connections do not share a cache.
-# Both "cache_size" parameters are set to 15, so there is a maximum of
-# 30 pages available globally.
-#
-# Then, in separate threads, the databases are randomly queried over and
-# over again. This will force the connections to recycle clean pages from
-# each other. If there is a thread-safety problem, a segfault or assertion
-# failure may eventually occur.
-#
-set nSecond 30
-puts "Starting thread003.2 (should run for ~$nSecond seconds)"
-do_test thread003.2 {
-  foreach zFile {test.db test2.db} {
-    set SCRIPT [format {
-      set iEnd [expr {[clock_seconds] + %d}]
-      set ::DB [sqlthread open %s xyzzy]
-  
-      # Set the cache size to 15 pages per cache. 30 available globally.
-      execsql { PRAGMA cache_size = 15 }
-  
-      while {[clock_seconds] < $iEnd} {
-        set iQuery [expr {int(rand()*5000)}]
-        execsql " SELECT * FROM t1 WHERE a = $iQuery "
-      }
-  
-      sqlite3_close $::DB
-      expr 1
-    } $nSecond $zFile]
-  
-    unset -nocomplain finished($zFile)
-    thread_spawn finished($zFile) $thread_procs $SCRIPT
-  }
-  foreach zFile {test.db test2.db} {
-    if {![info exists finished($zFile)]} {
-      vwait finished($zFile)
-    }
-  }
-  expr 0
-} {0}
-
-# This test is the same as the test above, except that each thread also
-# writes to the database. This causes pages to be moved back and forth 
-# between the caches internal dirty and clean lists, which is another
-# opportunity for a thread-related bug to present itself.
-#
-set nSecond 30
-puts "Starting thread003.3 (should run for ~$nSecond seconds)"
-do_test thread003.3 {
-  foreach zFile {test.db test2.db} {
-    set SCRIPT [format {
-      set iStart [clock_seconds]
-      set iEnd [expr {[clock_seconds] + %d}]
-      set ::DB [sqlthread open %s xyzzy]
-  
-      # Set the cache size to 15 pages per cache. 30 available globally.
-      execsql { PRAGMA cache_size = 15 }
-  
-      while {[clock_seconds] < $iEnd} {
-        set iQuery [expr {int(rand()*5000)}]
-        execsql "SELECT * FROM t1 WHERE a = $iQuery"
-        execsql "UPDATE t1 SET b = randomblob(200) 
-                 WHERE a < $iQuery AND a > $iQuery + 20
-        "
-      }
-  
-      sqlite3_close $::DB
-      expr 1
-    } $nSecond $zFile]
-  
-    unset -nocomplain finished($zFile)
-    thread_spawn finished($zFile) $thread_procs $SCRIPT
-  }
-  foreach zFile {test.db test2.db} {
-    if {![info exists finished($zFile)]} {
-      vwait finished($zFile)
-    }
-  }
-  expr 0
-} {0}
-
-# In this test case, one thread is continually querying the database.
-# The other thread does not have a database connection, but calls
-# sqlite3_release_memory() over and over again.
-#
-set nSecond 30
-puts "Starting thread003.4 (should run for ~$nSecond seconds)"
-unset -nocomplain finished(1)
-unset -nocomplain finished(2)
-do_test thread003.4 {
-  thread_spawn finished(1) $thread_procs [format {
-    set iEnd [expr {[clock_seconds] + %d}]
-    set ::DB [sqlthread open test.db xyzzy]
-
-    # Set the cache size to 15 pages per cache. 30 available globally.
-    execsql { PRAGMA cache_size = 15 }
-
-    while {[clock_seconds] < $iEnd} {
-      set iQuery [expr {int(rand()*5000)}]
-      execsql "SELECT * FROM t1 WHERE a = $iQuery"
-    }
-
-    sqlite3_close $::DB
-    expr 1
-  } $nSecond] 
-  thread_spawn finished(2) [format {
-    set iEnd [expr {[clock_seconds] + %d}]
-
-    while {[clock_seconds] < $iEnd} {
-      sqlite3_release_memory 1000
-    }
-  } $nSecond]
-  
-  foreach ii {1 2} {
-    if {![info exists finished($ii)]} {
-      vwait finished($ii)
-    }
-  }
-  expr 0
-} {0}
-
-set sqlite_open_file_count 0
-finish_test