Commit Graph

11 Commits

Author SHA1 Message Date
drh
9b4c59fa1b Refactoring the mmap interface. The controlling pragma is now "mmap_size"
instead of "mmap_limit".  Also change SQLITE_CONFIG_MMAP_LIMIT and
SQLITE_FCNTL_MMAP_LIMIT to SQLITE_CONFIG_MMAP_SIZE and
SQLITE_FCNTL_MMAP_SIZE, respecctively.  
The default mmap_size is now always 0, meaning that
memory mapped I/O is off by default.  There is a new compile-time option
SQLITE_MAX_MMAP_SIZE that determines a hard upper bound on the mmap_size.
Setting SQLITE_MAX_MMAP_SIZE to zero disables the memory-mapped I/O logic
and causes it to be omitted from the build.  An extra argument is added
to SQLITE_CONFIG_MMAP_SIZE that can optionally lower the SQLITE_MAX_MMAP_SIZE
at start-time. The SQLITE_MAX_MMAP_SIZE is zero for platforms where we 
know that it does not work, meaning that it cannot be turned on by mistake
on those platforms.

FossilOrigin-Name: ea1404a10abd7f68e1f8e0708c8a3199d1f79665
2013-04-15 17:03:42 +00:00
drh
188d488409 Disable the use of memory-mapped I/O if the SQLITE_DISABLE_MMAP macro is
defined.  Automatically define this macro for OpenBSD and QNX.  Other
systems are likely to be added to the disabled list over time.

FossilOrigin-Name: 8a4314a398c6c6efb25e6993c826b7e60d9bb1f9
2013-04-08 20:47:49 +00:00
drh
41f89cc676 Previous check-in accidently left mmap turned off by default. This checkin
fixes that.  Unfortunately, shared.test is now segfaulting.  All other
veryquick tests appear to work, however.

FossilOrigin-Name: a850c7319c20b5757983443df05cf2aa4250053b
2013-03-26 01:07:50 +00:00
dan
5d8a137218 Add the sqlite3_io_methods.xMremap() method to the VFS interface. Also "PRAGMA mmap_size".
FossilOrigin-Name: 6183f1bd86ceed76d22d9762f3d7eb33262c62d1
2013-03-19 19:28:06 +00:00
dan
f4ba109356 Add the SQLITE_DIRECT_OVERFLOW_READ compile time option.
FossilOrigin-Name: 2ab14a846727857175eac7961b7338c4d3b417ca
2011-10-08 14:57:07 +00:00
dan
c1a60c51dc Refactor some of the global variables and commands used by tester.tcl.
FossilOrigin-Name: c2edf8e17f874d0ca4e94b75575bf6e14eea1f05
2010-06-07 14:28:16 +00:00
danielk1977
8c0a791a58 Add the pcache module from the experimental branch. Also change things so that most of the built-in SQL functions are kept in single static hash-table, rather than creating and populating a separate hash table for each open database connection. (CVS 5566)
FossilOrigin-Name: cb494e10d71852024647aaa254203579ad438ea9
2008-08-20 14:49:23 +00:00
drh
c5d0bd907b Get the SQLITE_SECURE_DELETE compile-time option working again.
Ticket #3050. (CVS 4999)

FossilOrigin-Name: 40ba51fd4c621e29e7ff85495b1212c92f06ab31
2008-04-14 01:00:57 +00:00
drh
3aefabaf94 Updates to test scripts for better support of soft-heap-limit testing. (CVS 4209)
FossilOrigin-Name: 990f621f2247f1636e895dcf51fea1e08f202d31
2007-08-12 20:07:58 +00:00
drh
6558db80c0 Additional tests designed to detect future performance regressions. (CVS 3840)
FossilOrigin-Name: 764e7262b93a7a5073128ecd4db265b0c728a701
2007-04-13 03:23:21 +00:00
drh
538f570cd1 Fix multiple performance regressions (ticket #2298 among them)
and add tests to make sure they do not come back. (CVS 3839)

FossilOrigin-Name: 32bb2d5859906b4fb0f6083eedd7f3a81b9cf5e2
2007-04-13 02:14:30 +00:00