Import SQLite 3.8.7.4.

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.
 #
 #***********************************************************************
@@ skipping 14 matching lines @@
   return
 }
 
 # 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}
-  file delete -force test.db test.db-journal
+  forcedelete test.db test.db-journal
   sqlite3 db test.db
   sqlite3_db_config_lookaside db 0 0 0
   db eval $pragmas
   db eval {
     CREATE TABLE t1(x, y);
     CREATE TABLE t2(a, b);
     CREATE INDEX i1 ON t1(x,y);
     INSERT INTO t1 VALUES(1, 100);
     INSERT INTO t1 VALUES(2, 200);
   }
@@ skipping 15 matching lines @@
   sqlite3_status SQLITE_STATUS_MALLOC_SIZE 1
   sqlite3_status SQLITE_STATUS_PAGECACHE_USED 1
   sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 1
   sqlite3_status SQLITE_STATUS_PAGECACHE_SIZE 1
   sqlite3_status SQLITE_STATUS_SCRATCH_USED 1
   sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 1
   sqlite3_status SQLITE_STATUS_SCRATCH_SIZE 1
   sqlite3_status SQLITE_STATUS_PARSER_STACK 1
 }
 
-set xtra_size 256
+set xtra_size 290
 
 # Test 1:  Both PAGECACHE and SCRATCH are shut down.
 #
 db close
 sqlite3_shutdown
 sqlite3_config_lookaside 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]
 #show_memstats
 
 # Test 2:  Activate PAGECACHE with 20 pages
 #
 db close
 sqlite3_shutdown
 sqlite3_config_pagecache [expr 1024+$xtra_size] 20
 sqlite3_initialize
 reset_highwater_marks
-build_test_db memsubsys1-2 {PRAGMA page_size=1024}
+build_test_db memsubsys1-2 {PRAGMA page_size=1024; PRAGMA mmap_size=0}
 #show_memstats
 set MEMORY_MANAGEMENT $sqlite_options(memorymanage)
-do_test memsubsys1-2.3 {
-  set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
-} [expr ($TEMP_STORE>1 || $MEMORY_MANAGEMENT==0)*1024]
+ifcapable !malloc_usable_size {
+ do_test memsubsys1-2.3 {
+    set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
+  } [expr ($TEMP_STORE>1 || $MEMORY_MANAGEMENT==0)*1024]
+}
 do_test memsubsys1-2.4 {
   set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
 } 20
 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_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]
-} $max_pagecache
+  # Note:  The measured PAGECACHE_OVERFLOW is amount malloc() returns, not what
+  # was requested.  System malloc() implementations might (arbitrarily) return
+  # slightly different oversize buffers, which can result in slightly different
+  # PAGECACHE_OVERFLOW sizes between consecutive runs.  So we cannot do an
+  # exact comparison.  Simply verify that the amount is within 5%.
+  expr {$overflow>=$max_pagecache*0.95 && $overflow<=$max_pagecache*1.05}
+} 1
 do_test memsubsys1-3.1.5 {
   set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
 } 0
 db close
 sqlite3_shutdown
 sqlite3_config_pagecache [expr 2048+$xtra_size] 20
 sqlite3_initialize
 reset_highwater_marks
 build_test_db memsubsys1-3.2 {PRAGMA page_size=2048}
 #show_memstats
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 db close
 sqlite3_shutdown
 sqlite3_config_memstatus 1
 sqlite3_config_pagecache 0 0
 sqlite3_config_scratch 0 0
 sqlite3_config_lookaside 100 500
 sqlite3_initialize
 autoinstall_test_functions
 finish_test