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24 Commits

Author SHA1 Message Date
drh
dc5b047ec3 Fix a performance regression: Keep two btree masks in each prepared 
statement; one for btrees used and another for btrees that require locks.
Only try to lock the btrees identified by the second mask.

FossilOrigin-Name: 614de91a504d2231009a9de1305e31fce1b1c5a6
 2011-04-06 22:05:53 +00:00
drh
1a86f50d85 Simplifications to the sqlite3BtreeEnterAll() and LeaveAll() routines. 
Just have them call BtreeEnter and BtreeLeave() repeatedly rather than
trying to be clever.

FossilOrigin-Name: 51039b3578f948c23a810d176e81fa51a278fb28
 2011-04-05 19:27:41 +00:00
drh
e54e051800 Remove the mutex counter and the logic that attempts to verify that btree 
mutexes are held continuously.  We are not making that assumption at this
time.

FossilOrigin-Name: 242ce7cff416a87d57d4eb624cb79fa4e2215559
 2011-04-05 17:31:56 +00:00
drh
2120608e0f Add a description of access rules for the Schema object and lots of asserts 
to verify that the access rules are followed.

FossilOrigin-Name: ae8374af057b6e6546e9265148cfffe32fcb0849
 2011-04-04 18:22:02 +00:00
drh
bdaec52c62 Remove the BtreeMutexArray object - use the Vdbe.btreeMask field to accomplish 
the same result.  Add a generation counter to btree mutexes in order to assert
that mutexes are never temporarily dropped over a range of instructions in order
to do deadlock avoidance in some subroutine.  Lock all btrees in any Vdbe
program that uses OP_ParseSchema.

FossilOrigin-Name: d81708f7d1eee399bfe76f6b8dac950a85dc2582
 2011-04-04 00:14:43 +00:00
drh
4fa7d7c0df Fix typos in comments. No changes to code. 
FossilOrigin-Name: 28c5f12e98655d5c6167b13e8a15085eca43dd5b
 2011-04-03 02:41:00 +00:00
drh
c81c11f62c Remove the obsolete "$Id:$" RCS identifier strings from the source code. 
FossilOrigin-Name: f6c045f649036958078cb15cd9d5453680c82b0c
 2009-11-10 01:30:52 +00:00
drh
5dea3158fc Use an ALWAYS() on a conditional in btmutex.c that is always true. (CVS 6910) 
FossilOrigin-Name: 609022caff12c010575e704be550da6f52226d33
 2009-07-20 12:33:32 +00:00
drh
f18a61dd59 Code simplifications in support of structural testing. (CVS 6900) 
FossilOrigin-Name: fb1b955dda5105025ef199880afa871e44331d65
 2009-07-17 11:44:07 +00:00
danielk1977
f7590db099 Changes to ensure that when running in shared-cache mode with a non-threadsafe build, the correct busy-handler callback is always invoked. (CVS 6481) 
FossilOrigin-Name: 683e4bd74783e6e3f6cf75f9582008c7b7e02a01
 2009-04-10 12:55:16 +00:00
danielk1977
2a50ff0309 Always set BtShared.db when entering the BtShared mutex. Ticket #3793. (CVS 6480) 
FossilOrigin-Name: ed6620ba589ddbb6ca86f42a7652e3b019195647
 2009-04-10 09:47:06 +00:00
shane
be21779385 Corrected typos and misspellings. Ticket #3702. (CVS 6336) 
FossilOrigin-Name: 6404afa0c515a6536fc2e878d4fb451e4dc06942
 2009-03-05 04:20:31 +00:00
danielk1977
00e136135e Modifications to avoid unsigned/signed comparisons in various files. (CVS 5914) 
FossilOrigin-Name: 8009220c36635dd9b6efea7dc13281ca9625c40a
 2008-11-17 19:18:54 +00:00
drh
18472fa7b8 Remove the SQLITE_MUTEX_APPDEF compile-time option. The SQLITE_THREADSAFE=0 
option always removes all mutex code.  For application-defined mutexes only,
use SQLITE_THREADSAFE=1 with SQLITE_MUTEX_NOOP=1.  Ticket #3421. (CVS 5779)

FossilOrigin-Name: 02a12eb1cfe9307c66556105a1a99d657cc01ab5
 2008-10-07 15:25:48 +00:00
drh
65cef1affc Add a new test script to exercise the deadlock avoidance code in the 
btree mutex logic. (CVS 5412)

FossilOrigin-Name: 7d5e1c4375599a913d23e5954fa63c10ac9d7688
 2008-07-14 19:39:16 +00:00
drh
01495b9921 Improvements to test coverage in the lemon-generated parser and in the 
sqlite3_get_table() interface. (CVS 4745)

FossilOrigin-Name: 9f95d79daeb5e7f6fd62f3c896dae4d332121d1c
 2008-01-23 12:52:40 +00:00
drh
e5fe690d75 In shared-cache mode, make sure the busy hander invoked is the 
busy handler associated with the database connection that caused
the lock contention in the first place. (CVS 4598)

FossilOrigin-Name: c9eb65912f61ce0a6b66fe253652a1827e46b12a
 2007-12-07 18:55:28 +00:00
drh
fb98264aab Fix for the sqlite3AbortOtherActiveVdbes() problem. (CVS 4328) 
FossilOrigin-Name: e40d40a5d41c491bef852a92e5846b273b206909
 2007-08-30 01:19:59 +00:00
drh
ff0587c632 Improvements to mutex asserts. The quick test runs to completion without 
assertion faults. (CVS 4324)

FossilOrigin-Name: 2732af0ec77dbc90c0439b6a61d893d9ea3b5697
 2007-08-29 17:43:19 +00:00
drh
1fee73e74a Better asserts(). But now some of the tests are busted again. (CVS 4320) 
FossilOrigin-Name: e8060f85e7871572e2a38dc96f03e6e1f34cc8fd
 2007-08-29 04:00:57 +00:00
drh
b1ab8ea7f3 More locking fixes. Now makes it all the way through quick.test. There 
are errors but no assertion faults.  Progress. (CVS 4319)

FossilOrigin-Name: 844d40b8379d3374130e2d94f6e32c2cda34e0ca
 2007-08-29 00:33:07 +00:00
drh
4cf7c7f7e7 The shared_err test runs with no errors. But a potential deadlock has been 
discovered and is still unfixed. (CVS 4317)

FossilOrigin-Name: f84550be0a0c9e5859b852863b9a8f8ed3fd6919
 2007-08-28 23:28:07 +00:00
drh
ac32155213 Fix locking bug in btshared.c. (CVS 4313) 
FossilOrigin-Name: af24e7d01a7fab5e33080a0f786e0bc6f610a6f3
 2007-08-28 16:44:20 +00:00
drh
900b31ef49 Work toward correct btree locking in a multithreaded environment. (CVS 4307) 
FossilOrigin-Name: b8cc493b47e618648f645ab73eb0253739e03fcd
 2007-08-28 02:27:51 +00:00