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Overview
| Comment: | Make sure the default page size never exceeds the maximum page size. (CVS 4525) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
9c2731f143d52f8bf27f309612c38a1b |
| User & Date: | drh 2007-11-05 14:30:23 |
Context
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2007-11-05
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| 14:58 | Fix a bug in the misc1 test script. (CVS 4526) check-in: fa16996d user: drh tags: trunk | |
| 14:30 | Make sure the default page size never exceeds the maximum page size. (CVS 4525) check-in: 9c2731f1 user: drh tags: trunk | |
| 12:46 | Use malloc to obtain space for sqlite3_aggregate_context(). Ticket #2751. (CVS 4524) check-in: bf75058f user: danielk1977 tags: trunk | |
Changes
Changes to src/sqliteLimit.h.
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** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** This file defines various limits of what SQLite can process. ** ** @(#) $Id: sqliteLimit.h,v 1.2 2007/08/24 11:52:29 danielk1977 Exp $ */ /* ** The maximum length of a TEXT or BLOB in bytes. This also ** limits the size of a row in a table or index. ** ** The hard limit is the ability of a 32-bit signed integer ................................................................................ /* ** The maximum value of a ?nnn wildcard that the parser will accept. */ #ifndef SQLITE_MAX_VARIABLE_NUMBER # define SQLITE_MAX_VARIABLE_NUMBER 999 #endif /* ** The default size of a database page. */ #ifndef SQLITE_DEFAULT_PAGE_SIZE # define SQLITE_DEFAULT_PAGE_SIZE 1024 #endif /* ** Ordinarily, if no value is explicitly provided, SQLite creates databases ** with page size SQLITE_DEFAULT_PAGE_SIZE. However, based on certain ** device characteristics (sector-size and atomic write() support), ** SQLite may choose a larger value. This constant is the maximum value ** SQLite will choose on it's own. */ #ifndef SQLITE_MAX_DEFAULT_PAGE_SIZE # define SQLITE_MAX_DEFAULT_PAGE_SIZE 8192 #endif /* Maximum page size. The upper bound on this value is 32768. This a limit ** imposed by the necessity of storing the value in a 2-byte unsigned integer ** and the fact that the page size must be a power of 2. */ #ifndef SQLITE_MAX_PAGE_SIZE # define SQLITE_MAX_PAGE_SIZE 32768 #endif /* ** Maximum number of pages in one database file. ** ** This is really just the default value for the max_page_count pragma. ** This value can be lowered (or raised) at run-time using that the ** max_page_count macro. |
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** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** This file defines various limits of what SQLite can process. ** ** @(#) $Id: sqliteLimit.h,v 1.3 2007/11/05 14:30:23 drh Exp $ */ /* ** The maximum length of a TEXT or BLOB in bytes. This also ** limits the size of a row in a table or index. ** ** The hard limit is the ability of a 32-bit signed integer ................................................................................ /* ** The maximum value of a ?nnn wildcard that the parser will accept. */ #ifndef SQLITE_MAX_VARIABLE_NUMBER # define SQLITE_MAX_VARIABLE_NUMBER 999 #endif /* Maximum page size. The upper bound on this value is 32768. This a limit ** imposed by the necessity of storing the value in a 2-byte unsigned integer ** and the fact that the page size must be a power of 2. */ #ifndef SQLITE_MAX_PAGE_SIZE # define SQLITE_MAX_PAGE_SIZE 32768 #endif /* ** The default size of a database page. */ #ifndef SQLITE_DEFAULT_PAGE_SIZE # define SQLITE_DEFAULT_PAGE_SIZE 1024 #endif #if SQLITE_DEFAULT_PAGE_SIZE>SQLITE_MAX_PAGE_SIZE # undef SQLITE_DEFAULT_PAGE_SIZE # define SQLITE_DEFAULT_PAGE_SIZE SQLITE_MAX_PAGE_SIZE #endif /* ** Ordinarily, if no value is explicitly provided, SQLite creates databases ** with page size SQLITE_DEFAULT_PAGE_SIZE. However, based on certain ** device characteristics (sector-size and atomic write() support), ** SQLite may choose a larger value. This constant is the maximum value ** SQLite will choose on it's own. */ #ifndef SQLITE_MAX_DEFAULT_PAGE_SIZE # define SQLITE_MAX_DEFAULT_PAGE_SIZE 8192 #endif #if SQLITE_MAX_DEFAULT_PAGE_SIZE>SQLITE_MAX_PAGE_SIZE # undef SQLITE_MAX_DEFAULT_PAGE_SIZE # define SQLITE_MAX_DEFAULT_PAGE_SIZE SQLITE_MAX_PAGE_SIZE #endif /* ** Maximum number of pages in one database file. ** ** This is really just the default value for the max_page_count pragma. ** This value can be lowered (or raised) at run-time using that the ** max_page_count macro. |