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6457 Commits

Author SHA1 Message Date
drh
9bf3da8eab Add a mutex around an sqlite3StatusAdd() call to prevent the pagecount 
overflow measurements from getting off in multithreaded applications.

FossilOrigin-Name: 3d8b298dc24fe13a3f390da41f79b8613a6f25a7
 2011-01-26 13:24:40 +00:00
dan
6d4fb833b7 Update mutex1.test so that it works with the memsubsys1 permutation (pagecache memory). Change a few instances of SQLITE_MUTEX_STATIC_LRU2 in comments and test code to STATIC_PMEM. 
FossilOrigin-Name: 456bd5c63b41bae8e389df81e318b830aa314000
 2011-01-26 07:25:32 +00:00
drh
25ca568251 Rename the PCache1.mxPinned field to n90pct (since it is 90% of nMax) in order 
to distinguish it from PGroup.mxPinned.  Fix the computation of n90pct so that
it does not overflow adversely on excessively large cache sizes.

FossilOrigin-Name: c85202baac49b22a4be36b9733d44f01d83edb28
 2011-01-26 00:07:03 +00:00
drh
1e4040a4b4 Fix new compiler warnings in pcache1.c that were introduced by the recent 
performance enhancement patches of [e14649301138b684].

FossilOrigin-Name: c17703ec1e604934f8bd5b1f66f34b19d17a6d1f
 2011-01-25 18:30:51 +00:00
dan
4d26d585d6 Add a missing call to sqlite3PagerSync() removed by [ce552d975] to the backup code. 
FossilOrigin-Name: 1965b85318c1fac62fae9691059021b298c17dde
 2011-01-25 18:19:24 +00:00
drh
534a58a76d Make sure the return code from doing an xSync is correctly initialized 
so that a valid return code is produced regardless of the path taken through
the logic.

FossilOrigin-Name: f12b5d76854c2f294ac60afe38a6dac37eb5b174
 2011-01-25 16:48:56 +00:00
drh
951596cdef Change the name of SQLITE_FCNTL_SYNC to SQLITE_FCNTL_SYNC_OMITTED and only 
send it when PRAGMA synchronous=OFF.  Add better documentation to explain
what that file-control opcode is used for.

FossilOrigin-Name: 64914980855dbbf19512642836ca962a507b3ddb
 2011-01-25 16:20:16 +00:00
dan
0ecdeb2414 Fix a couple of typos in comments. No changes to actual code. 
FossilOrigin-Name: 9167fdb3560b1567a0bdc9a1906a87ec98e161f1
 2011-01-25 13:43:35 +00:00
dan
d1cf7e2972 Fix a broken assert() in pager.c. 
FossilOrigin-Name: 13108ce13c281f31aa60b403567710ae3d925797
 2011-01-25 11:33:01 +00:00
drh
41692e9d7c Shave a few cycles so that performance is better than 3.7.4 in speed tests. 
FossilOrigin-Name: e14649301138b6840e24a4bbd2cf5205c0f72409
 2011-01-25 04:34:51 +00:00
drh
3778ac15dd Modify the test_quote.c demonstration shim so that it works when 
SQLITE_THREADSAFE=0 is defined.

FossilOrigin-Name: b70bcccaf5597c8a59cccb64fb997523f7b8fe4f
 2011-01-24 20:18:05 +00:00
drh
2afc704ad8 Fix a typo in the documentation for sqlite3_snprintf(). No changes to code. 
FossilOrigin-Name: 8d1065411aadf189880606c48ab63dd2a56b9793
 2011-01-24 19:45:07 +00:00
drh
906b662060 Fix a harmless compiler warning (a shadowed local variable) in analyze.c. 
FossilOrigin-Name: a1ad7fb38bb38909ca2fddee31c7a8001f10686f
 2011-01-24 19:14:06 +00:00
dan
19611b1a88 Ensure that if a deferred FK constraint is violated by a statement that creates its own implicit transaction, the statement is not an "active-write" after sqlite3_step() returns. 
FossilOrigin-Name: 8063197ef141c0c62ba710efdd2b3421fbee4e5d
 2011-01-24 16:00:58 +00:00
drh
b966194a63 Change the cost estimator in the query planner to take into account the 
logN rowid lookup cost when going from an index to a table.

FossilOrigin-Name: b442525b0ba642bb8d57b87b7b9e373b6046454a
 2011-01-24 15:11:23 +00:00
dan
27381bd519 Modify the trace callback mechanism so that SQL commands executed from within virtual table or user function callbacks are passed to the trace callback without parameter expansion and enclosed in SQL comments. 
FossilOrigin-Name: a764915b87564fa91ee68e9b1f41394ce0f1fc7e
 2011-01-22 13:32:29 +00:00
drh
534230cf2e Add the ability to use indices for constraints of the form "x IS NOT NULL" 
when sqlite_stat2 is available and most entries for column x are NULL.

FossilOrigin-Name: 5d5bddd290e71a7b03bcc23ff29881c23233cbff
 2011-01-22 00:10:45 +00:00
dan
a9ef7097c7 Change sqlite3StrAccumAppend() to use realloc instead of malloc. 
FossilOrigin-Name: 380f61df0754ceec6b3f6a758d04e951cce8c3d9
 2011-01-21 18:25:29 +00:00
drh
5ac0607169 Adjustments to the result row estimator for the IN operator so that it gives 
the same estimates as the equivalent OR operator.  Test cases for the same.

FossilOrigin-Name: c82cb9c028b3ba5463ae50c30196dbf157a7a305
 2011-01-21 18:18:13 +00:00
drh
0c50fa0f61 Make use of histogram data to make better estimates for the number of rows 
that will be returned from "x IN (v1,v2,v3,...)" constraints.

FossilOrigin-Name: fd3977a27ae68e694df12a4713e55515c1e87c5d
 2011-01-21 16:27:18 +00:00
drh
9b3eb0adc1 Add the ability to use indices when a range contraint is bounded on 
the lower end by NULL.

FossilOrigin-Name: f73a167b434fadcbbd15e3891c4b7f4f87f6363c
 2011-01-21 14:37:04 +00:00
drh
82759754ce Use histogram data to improve the row-count estimates on equality constraints. 
FossilOrigin-Name: 6bfc5c69eb22938972bbf4e60179952dc215f770
 2011-01-20 16:52:09 +00:00
drh
e847d3247f The first of a planned series of enhancements to the query planner that 
enable it to make better use of sqlite_stat2 histograms when the table
has many repeated values.

FossilOrigin-Name: 2cd374cd23fa2fd38f49090d6eeb9b1e521d51d5
 2011-01-20 02:56:37 +00:00
drh
3a5676ce26 Comment improvements in pcache1.c. No changes to code. 
FossilOrigin-Name: 9660a0a22547656cc3765b673d0cee9e1dd829ef
 2011-01-19 21:58:56 +00:00
drh
40f9837ff6 Do not use SQLITE_MUTEX_STATIC_MEM2 since it has been reused as STATIC_OPEN. 
Instead, create a new static mutex STATIC_PMEM which is an alias for the
unused STATIC_LRU2.

FossilOrigin-Name: f1cf02efcb3a871fef49f8b5f41bcf07622a6d29
 2011-01-18 15:17:57 +00:00
drh
9f8cf9da27 Here is a completely new implementation of the mutex-free-pcache. This 
one uses a common code base and automatically selects whether or not to 
use mutexes depending on compile-time and start-time options.

FossilOrigin-Name: d094a1bfb7569a52b637fe9ba5d3fa6ce5ea6d94
 2011-01-17 21:32:24 +00:00
drh
eee50ca5a7 Fix a typo in the documentation for sqlite3_stmt_readonly(). 
FossilOrigin-Name: 56417a3386fc84dd36bf1488e88149b1ac6a0d02
 2011-01-17 18:30:10 +00:00
drh
602acb4871 Add the SQLITE_OMIT_AUTORESET compile-time option which if enabled causes 
the sqlite3_step() routine to return SQLITE_MISUSE if it is called after
it has previously returned anything other than SQLITE_ROW, SQLITE_BUSY, or
SQLITE_LOCKED.

FossilOrigin-Name: 053ce76deb356d31358454507ba94947142e20ca
 2011-01-17 17:42:37 +00:00
drh
c5aae5c90b Add back an ALWAYS() to regain full test coverage. 
FossilOrigin-Name: b93f6f3e679c7710f42580a8dd9ce43136376c1d
 2011-01-17 02:24:12 +00:00
drh
c6aed5424b On a backup from a smaller to a larger page size, do not begin committing 
the transaction until the source pages after the pending byte have been
copied.

FossilOrigin-Name: 612e2599d3e1a17c268402fce018a53dee6dffe1
 2011-01-16 22:37:09 +00:00
drh
d40d7ec78b Make sure the change-counter and SQLite-version fields of the header are 
set correctly even when doing a VACUUM with locking_mode=EXCLUSIVE.
Ticket [5d863f876ee9561b].

FossilOrigin-Name: 04fa1e16905183b948ee6456675799a873d5f97d
 2011-01-16 00:56:19 +00:00
drh
54a7347aa1 Fix the change-counter increment for WAL pages so that it works even when 
invoked from xStress.  Ticket [5d863f876ee9561b95e2].

FossilOrigin-Name: 228e7c34c64114670fe015747d47fdaa3b7e1270
 2011-01-15 18:11:12 +00:00
drh
104a7bba8c Increment the change counter and update the SQLite version number whenever 
page 1 is added to the WAL.  Ticket [5d863f876ee9561b9]

FossilOrigin-Name: c1e0d09cd3f5feae123468a35f147021d839641c
 2011-01-15 17:12:59 +00:00
drh
94e7bd55bd Fix comments, including some documentation comments, in the page cache 
logic.  No code changes.

FossilOrigin-Name: c80e9c1a0dc0e501b209874e147e1cb1348cb4a4
 2011-01-14 15:17:55 +00:00
dan
47e909bb15 Fix a bug in test code (test_vfs.c). 
FossilOrigin-Name: 772a3845f8ef5cd3131992c45f6ce607977820f3
 2011-01-14 11:51:28 +00:00
drh
5b3696e8a6 Fix a typo on the sqlite3_open_v2() documentation. 
FossilOrigin-Name: b0add45abc9929c5b8d1124879bc3e8acf2ab7c7
 2011-01-13 16:10:58 +00:00
drh
efd95a7aca Do not raise an SQLITE_CORRUPT error in Recoverymode 
if the database size in the header is larger than the physical file
size.  This facilitates recovery of a database in which the database size
field has been corrupted.

FossilOrigin-Name: 114640d920e16c85de90b19d53c485135875de5b
 2011-01-12 17:56:26 +00:00
dan
da56b15e95 Merge accidentally created fork. 
FossilOrigin-Name: b7d080b8e850bd262f53f29ba4687a62cf76d4ef
 2011-01-11 17:40:30 +00:00
dan
354bfe0363 Add the SQLITE_FCNTL_SYNC file-control. 
FossilOrigin-Name: b3f2f465c310a2cfef8731a0dae3453593b68de9
 2011-01-11 17:39:37 +00:00
drh
ca94d8bf82 Change the page size of the destination database in a backup, if it is 
changeable, prior to starting the backup.

FossilOrigin-Name: a5e4e0caad788318bc973e2550488a3b83128b8b
 2011-01-11 17:38:03 +00:00
dan
9f4beedb6f If a rollback is attempted in journal_mode=off mode, force SQLite to discard the contents of the pager cache before processing any subsequent queries. 
FossilOrigin-Name: ece7efce2733b4fdd71db385abebbde464ac8f30
 2011-01-11 16:09:55 +00:00
drh
444d26065e Update pager requirements to accound for the ZIPVFS extension. 
FossilOrigin-Name: d94e59b514c16c5f7ea506e0af1c6e2ffecc13be
 2011-01-10 21:01:10 +00:00
drh
2e5de2f2b3 Reorder the fields in private structures in an effort to reduce alignment 
gaps and thus make the structures smaller, and to put frequently accessed
fields first.  Also update some obsolete comments.  Valgrind shows a very
slight performance improvement.

FossilOrigin-Name: 378a1d13af4a6f4cb2bfa65944b3b0d444b9f21c
 2011-01-07 02:50:40 +00:00
drh
db26d4c9e1 Add the sqlite3_vsnprintf() interface. 
FossilOrigin-Name: fc67adea414320e0c0b24054f76070cfaeebb401
 2011-01-05 12:20:09 +00:00
drh
65a0ce16aa Fix a null-pointer dereference that can occur on an OOM error while running 
ANALYZE with SQLITE_ENABLE_STAT2.

FossilOrigin-Name: 73128d4ef5d7703bf7af0553c307b55dc1b783f6
 2011-01-04 20:06:33 +00:00
drh
4856698fa5 Fix the ANALYZE command so that it takes collating sequences into account 
when gathering index statistics.

FossilOrigin-Name: a5867cfc4c9b9155fa345247dec29e38fffa8002
 2011-01-04 19:01:26 +00:00
drh
8e93b10a4e The ANALYZE command now counts at all rows of an index, even those containing 
NULL values.  A valid sqlite_stat1 entry is created even if the index contains
nothing but NULLs.

FossilOrigin-Name: 824c8dd3015bbd5c8a1dd661cfe09fe5bf7a80d3
 2011-01-04 17:57:53 +00:00
dan
b29010cd4f Have testfixture invoke C routine Zipvfs_Init() when creating a new interpreter if SQLITE_ENABLE_ZIPVFS is defined. 
FossilOrigin-Name: 430635dacfa818e8266a88214aaf60c77862de1c
 2010-12-29 18:24:38 +00:00
dan
72903821e3 Fix some off-by-one errors in the comments for API functions create_function() and value_blob(). No changes to code or tests. 
FossilOrigin-Name: 7ded90baeb75db5af83345cd2c31211cbee1e91b
 2010-12-29 10:49:46 +00:00
drh
b469f46083 Do not include <sys/mmap.h> if SQLITE_OMIT_WAL is defined. 
FossilOrigin-Name: b82e85ece94c8e25c1dc3251f5444a295fbf8c89
 2010-12-22 21:48:50 +00:00