Import SQLite 3.10.2.

third_party/sqlite/src/test/memsubsys1.test

 # 2008 June 18
 #
 # 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 of the memory allocation subsystem
 #
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
 sqlite3_reset_auto_extension
 
 # This test assumes that no page-cache or scratch buffers are installed
 # by default when a new database connection is opened. As a result, it
 # will not work with the "memsubsys1" permutation.
 #
 if {[permutation] == "memsubsys1"} {
   finish_test
   return
 }
 
+test_set_config_pagecache 0 0
+
 # This procedure constructs a new database in test.db.  It fills
 # this database with many small records (enough to force multiple
 # rebalance operations in the btree-layer and to require a large
 # page cache), verifies correct results, then returns.
 #
 proc build_test_db {testname pragmas} {
   catch {db close}
   forcedelete test.db test.db-journal
   sqlite3 db test.db
   sqlite3_db_config_lookaside db 0 0 0
@@ skipping 30 matching lines @@
   sqlite3_status SQLITE_STATUS_PARSER_STACK 1
 }
 
 set xtra_size 290
 
 # Test 1:  Both PAGECACHE and SCRATCH are shut down.
 #
 db close
 sqlite3_shutdown
 sqlite3_config_lookaside 0 0
+sqlite3_config_pagecache 0 0
 sqlite3_initialize
 reset_highwater_marks
 build_test_db memsubsys1-1 {PRAGMA page_size=1024}
 do_test memsubsys1-1.3 {
   set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
 } 0
 do_test memsubsys1-1.4 {
   set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
 } 0
 set max_pagecache [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
@@ skipping 20 matching lines @@
 do_test memsubsys1-2.5 {
   set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
 } 0
 
 # Test 3:  Activate PAGECACHE with 20 pages but use the wrong page size
 # so that PAGECACHE is not used.
 #
 db close
 sqlite3_shutdown
 sqlite3_config_pagecache [expr 512+$xtra_size] 20
+sqlite3_config singlethread
 sqlite3_initialize
 reset_highwater_marks
 build_test_db memsubsys1-3.1 {PRAGMA page_size=1024}
-#show_memstats
 do_test memsubsys1-3.1.3 {
   set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
 } 0
 do_test memsubsys1-3.1.4 {
   set overflow [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
   # Note:  The measured PAGECACHE_OVERFLOW is amount malloc() returns, not what
   # was requested.  System malloc() implementations might (arbitrarily) return
   # slightly different oversize buffers, which can result in slightly different
   # PAGECACHE_OVERFLOW sizes between consecutive runs.  So we cannot do an
   # exact comparison.  Simply verify that the amount is within 5%.
@@ skipping 37 matching lines @@
   set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
 } 0
 do_test memsubsys1-4.5 {
   set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2]
   expr {$maxreq<7000}
 } 1
 do_test memsubsys1-4.6 {
   set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
 } 1
 
-# Test 5:  Activate both PAGECACHE and SCRATCH.  But make the page size
+# Test 5:  Activate both PAGECACHE and SCRATCH.  But make the page size is
 # such that the SCRATCH allocations are too small.
 #
 db close
 sqlite3_shutdown
 sqlite3_config_pagecache [expr 4096+$xtra_size] 24
-sqlite3_config_scratch 6000 2
+sqlite3_config_scratch 4000 2
 sqlite3_initialize
 reset_highwater_marks
 build_test_db memsubsys1-5 {PRAGMA page_size=4096}
 #show_memstats
 do_test memsubsys1-5.3 {
   set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
-} 24
+} {/^2[34]$/}
 do_test memsubsys1-5.4 {
   set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2]
   expr {$maxreq>4096}
 } 1
 do_test memsubsys1-5.5 {
   set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
 } 0
 do_test memsubsys1-5.6 {
   set s_ovfl [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 0] 2]
   expr {$s_ovfl>6000}
 } 1
 
 # Test 6:  Activate both PAGECACHE and SCRATCH with a 4k page size.
 # Make it so that SCRATCH is large enough
 #
 db close
 sqlite3_shutdown
 sqlite3_config_pagecache [expr 4096+$xtra_size] 24
 sqlite3_config_scratch 25300 1
 sqlite3_initialize
 reset_highwater_marks
 build_test_db memsubsys1-6 {PRAGMA page_size=4096}
 #show_memstats
 do_test memsubsys1-6.3 {
   set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
-} 24
+} {/^2[34]$/}
 #do_test memsubsys1-6.4 {
 #  set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2]
 #  expr {$maxreq>4096 && $maxreq<=(4096+$xtra_size)}
 #} 1
 do_test memsubsys1-6.5 {
   set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
 } 1
 do_test memsubsys1-6.6 {
   set s_ovfl [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 0] 2]
 } 0
@@ skipping 73 matching lines @@
     INSERT INTO t1 SELECT * FROM t1;
     INSERT INTO t1 SELECT * FROM t1;
     SELECT rowid FROM t1;
   }
 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16}
 
 
 db close
 sqlite3_shutdown
 sqlite3_config_memstatus 1
-sqlite3_config_pagecache 0 0
 sqlite3_config_scratch 0 0
 sqlite3_config_lookaside 100 500
+sqlite3_config serialized
 sqlite3_initialize
 autoinstall_test_functions
+
+test_restore_config_pagecache
 finish_test