3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
6 # May you do good and not evil.
7 # May you find forgiveness for yourself and forgive others.
8 # May you share freely, never taking more than you give.
10 #***********************************************************************
12 # This file contains tests of the memory allocation subsystem
15 set testdir [file dirname $argv0]
16 source $testdir/tester.tcl
17 sqlite3_reset_auto_extension
19 # This test assumes that no page-cache or scratch buffers are installed
20 # by default when a new database connection is opened. As a result, it
21 # will not work with the "memsubsys1" permutation.
23 if {[permutation] == "memsubsys1"} {
28 # This procedure constructs a new database in test.db. It fills
29 # this database with many small records (enough to force multiple
30 # rebalance operations in the btree-layer and to require a large
31 # page cache), verifies correct results, then returns.
33 proc build_test_db {testname pragmas} {
35 forcedelete test.db test.db-journal
37 sqlite3_db_config_lookaside db 0 0 0
40 CREATE TABLE t1(x, y);
41 CREATE TABLE t2(a, b);
42 CREATE INDEX i1 ON t1(x,y);
43 INSERT INTO t1 VALUES(1, 100);
44 INSERT INTO t1 VALUES(2, 200);
46 for {set i 2} {$i<5000} {incr i $i} {
47 db eval {INSERT INTO t2 SELECT * FROM t1}
48 db eval {INSERT INTO t1 SELECT a+$i, a+b*100 FROM t2}
49 db eval {DELETE FROM t2}
52 db eval {SELECT count(*) FROM t1}
54 integrity_check $testname.2
57 # Reset all of the highwater marks.
59 proc reset_highwater_marks {} {
60 sqlite3_status SQLITE_STATUS_MEMORY_USED 1
61 sqlite3_status SQLITE_STATUS_MALLOC_SIZE 1
62 sqlite3_status SQLITE_STATUS_PAGECACHE_USED 1
63 sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 1
64 sqlite3_status SQLITE_STATUS_PAGECACHE_SIZE 1
65 sqlite3_status SQLITE_STATUS_SCRATCH_USED 1
66 sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 1
67 sqlite3_status SQLITE_STATUS_SCRATCH_SIZE 1
68 sqlite3_status SQLITE_STATUS_PARSER_STACK 1
73 # Test 1: Both PAGECACHE and SCRATCH are shut down.
77 sqlite3_config_lookaside 0 0
80 build_test_db memsubsys1-1 {PRAGMA page_size=1024}
81 do_test memsubsys1-1.3 {
82 set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
84 do_test memsubsys1-1.4 {
85 set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
87 set max_pagecache [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
90 # Test 2: Activate PAGECACHE with 20 pages
94 sqlite3_config_pagecache [expr 1024+$xtra_size] 20
97 build_test_db memsubsys1-2 {PRAGMA page_size=1024; PRAGMA mmap_size=0}
99 set MEMORY_MANAGEMENT $sqlite_options(memorymanage)
100 ifcapable !malloc_usable_size {
101 do_test memsubsys1-2.3 {
102 set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
103 } [expr ($TEMP_STORE>1 || $MEMORY_MANAGEMENT==0)*1024]
105 do_test memsubsys1-2.4 {
106 set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
108 do_test memsubsys1-2.5 {
109 set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
112 # Test 3: Activate PAGECACHE with 20 pages but use the wrong page size
113 # so that PAGECACHE is not used.
117 sqlite3_config_pagecache [expr 512+$xtra_size] 20
119 reset_highwater_marks
120 build_test_db memsubsys1-3.1 {PRAGMA page_size=1024}
122 do_test memsubsys1-3.1.3 {
123 set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
125 do_test memsubsys1-3.1.4 {
126 set overflow [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
127 # Note: The measured PAGECACHE_OVERFLOW is amount malloc() returns, not what
128 # was requested. System malloc() implementations might (arbitrarily) return
129 # slightly different oversize buffers, which can result in slightly different
130 # PAGECACHE_OVERFLOW sizes between consecutive runs. So we cannot do an
131 # exact comparison. Simply verify that the amount is within 5%.
132 expr {$overflow>=$max_pagecache*0.95 && $overflow<=$max_pagecache*1.05}
134 do_test memsubsys1-3.1.5 {
135 set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
139 sqlite3_config_pagecache [expr 2048+$xtra_size] 20
141 reset_highwater_marks
142 build_test_db memsubsys1-3.2 {PRAGMA page_size=2048}
144 do_test memsubsys1-3.2.3 {
145 db eval {PRAGMA page_size}
147 do_test memsubsys1-3.2.4 {
148 set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
150 do_test memsubsys1-3.2.5 {
151 set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
154 # Test 4: Activate both PAGECACHE and SCRATCH.
158 sqlite3_config_pagecache [expr 1024+$xtra_size] 50
159 sqlite3_config_scratch 6000 2
161 reset_highwater_marks
162 build_test_db memsubsys1-4 {PRAGMA page_size=1024}
164 do_test memsubsys1-4.3 {
165 set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
166 expr {$pg_used>=45 && $pg_used<=50}
168 do_test memsubsys1-4.4 {
169 set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
171 do_test memsubsys1-4.5 {
172 set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2]
175 do_test memsubsys1-4.6 {
176 set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
179 # Test 5: Activate both PAGECACHE and SCRATCH. But make the page size
180 # such that the SCRATCH allocations are too small.
184 sqlite3_config_pagecache [expr 4096+$xtra_size] 24
185 sqlite3_config_scratch 6000 2
187 reset_highwater_marks
188 build_test_db memsubsys1-5 {PRAGMA page_size=4096}
190 do_test memsubsys1-5.3 {
191 set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
193 do_test memsubsys1-5.4 {
194 set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2]
197 do_test memsubsys1-5.5 {
198 set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
200 do_test memsubsys1-5.6 {
201 set s_ovfl [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 0] 2]
205 # Test 6: Activate both PAGECACHE and SCRATCH with a 4k page size.
206 # Make it so that SCRATCH is large enough
210 sqlite3_config_pagecache [expr 4096+$xtra_size] 24
211 sqlite3_config_scratch 25300 1
213 reset_highwater_marks
214 build_test_db memsubsys1-6 {PRAGMA page_size=4096}
216 do_test memsubsys1-6.3 {
217 set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
219 #do_test memsubsys1-6.4 {
220 # set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2]
221 # expr {$maxreq>4096 && $maxreq<=(4096+$xtra_size)}
223 do_test memsubsys1-6.5 {
224 set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
226 do_test memsubsys1-6.6 {
227 set s_ovfl [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 0] 2]
230 # Test 7: Activate both PAGECACHE and SCRATCH with a 4k page size.
231 # Set cache_size small so that no PAGECACHE overflow occurs. Verify
232 # that maximum allocation size is small.
236 sqlite3_config_pagecache [expr 4096+$xtra_size] 24
237 sqlite3_config_scratch 25300 1
239 reset_highwater_marks
240 build_test_db memsubsys1-7 {
241 PRAGMA page_size=4096;
242 PRAGMA cache_size=10;
243 PRAGMA temp_store=memory;
246 do_test memsubsys1-7.3 {
247 set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2]
250 do_test memsubsys1-7.4 {
251 set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2]
253 do_test memsubsys1-7.5 {
254 set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2]
257 do_test memsubsys1-7.6 {
258 set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
260 do_test memsubsys1-7.7 {
261 set s_ovfl [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 0] 2]
264 # Test 8: Disable PAGECACHE. Make available SCRATCH zero. Verify that
265 # the SCRATCH overflow logic works.
269 sqlite3_config_pagecache 0 0
270 sqlite3_config_scratch 25000 0
272 reset_highwater_marks
273 do_test memsubsys1-8.1 {
274 set pg_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2]
276 do_test memsubsys1-8.2 {
277 set s_ovfl [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 0] 2]
279 do_test memsubsys1-8.3 {
283 INSERT INTO t1 VALUES(zeroblob(400));
284 INSERT INTO t1 VALUES(zeroblob(400));
285 INSERT INTO t1 SELECT * FROM t1;
286 INSERT INTO t1 SELECT * FROM t1;
287 INSERT INTO t1 SELECT * FROM t1;
289 expr {[lindex [sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 0] 2]>0}
293 sqlite3_config_memstatus 0
295 do_test memsubsys1-8.4 {
299 INSERT INTO t1 VALUES(zeroblob(400));
300 INSERT INTO t1 VALUES(zeroblob(400));
301 INSERT INTO t1 SELECT * FROM t1;
302 INSERT INTO t1 SELECT * FROM t1;
303 INSERT INTO t1 SELECT * FROM t1;
304 SELECT rowid FROM t1;
306 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16}
311 sqlite3_config_memstatus 1
312 sqlite3_config_pagecache 0 0
313 sqlite3_config_scratch 0 0
314 sqlite3_config_lookaside 100 500
316 autoinstall_test_functions