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Overview
Comment: | Add comments to the code warning that _XOPEN_SOURCE might need to be defined manually if using USE_PREAD or USE_PREAD64. (CVS 4509) |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
d7ed7cd077fe5f9ffba2bca48b84b231 |
User & Date: | drh 2007-10-23 15:59:18.000 |
Context
2007-10-23
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18:55 | Add comments, assertions, and test cases to demonstrate that the problem described in ticket #2742 is not a real problem. (CVS 4510) (check-in: c085d6dfc0 user: drh tags: trunk) | |
15:59 | Add comments to the code warning that _XOPEN_SOURCE might need to be defined manually if using USE_PREAD or USE_PREAD64. (CVS 4509) (check-in: d7ed7cd077 user: drh tags: trunk) | |
15:51 | Make sure the _LARGEFILE_SOURCE macro occurs before any system includes. Ticket #2739. (CVS 4508) (check-in: 36465aeb1f user: drh tags: trunk) | |
Changes
Changes to src/os_unix.c.
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768 769 770 771 772 773 774 775 776 777 778 779 780 781 | /* On single-threaded builds, ownership transfer is a no-op */ # define transferOwnership(X) SQLITE_OK #endif /* ** Seek to the offset passed as the second argument, then read cnt ** bytes into pBuf. Return the number of bytes actually read. */ static int seekAndRead(unixFile *id, sqlite3_int64 offset, void *pBuf, int cnt){ int got; i64 newOffset; TIMER_START; #if defined(USE_PREAD) got = pread(id->h, pBuf, cnt, offset); | > > > > > > | 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 | /* On single-threaded builds, ownership transfer is a no-op */ # define transferOwnership(X) SQLITE_OK #endif /* ** Seek to the offset passed as the second argument, then read cnt ** bytes into pBuf. Return the number of bytes actually read. ** ** NB: If you define USE_PREAD or USE_PREAD64, then it might also ** be necessary to define _XOPEN_SOURCE to be 500. This varies from ** one system to another. Since SQLite does not define USE_PREAD ** any any form by default, we will not attempt to define _XOPEN_SOURCE. ** See tickets #2741 and #2681. */ static int seekAndRead(unixFile *id, sqlite3_int64 offset, void *pBuf, int cnt){ int got; i64 newOffset; TIMER_START; #if defined(USE_PREAD) got = pread(id->h, pBuf, cnt, offset); |
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Changes to src/sqliteInt.h.
1 2 3 4 5 6 7 8 9 10 11 12 13 | /* ** 2001 September 15 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** Internal interface definitions for SQLite. ** | | | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | /* ** 2001 September 15 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** Internal interface definitions for SQLite. ** ** @(#) $Id: sqliteInt.h,v 1.617 2007/10/23 15:59:18 drh Exp $ */ #ifndef _SQLITEINT_H_ #define _SQLITEINT_H_ /* ** These #defines should enable >2GB file support on Posix if the ** underlying operating system supports it. If the OS lacks |
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108 109 110 111 112 113 114 115 116 117 118 119 120 121 | ** The _XOPEN_SOURCE define causes problems for Mac OS X we are told, ** so it is omitted there. See ticket #2673. ** ** Later we learn that _XOPEN_SOURCE is poorly or incorrectly ** implemented on some systems. So we avoid defining it at all ** if it is already defined or if it is unneeded because we are ** not doing a threadsafe build. Ticket #2681. */ #if !defined(_XOPEN_SOURCE) && !defined(__MACOS__) && SQLITE_THREADSAFE # define _XOPEN_SOURCE 500 /* Needed to enable pthread recursive mutexes */ #endif #if defined(SQLITE_TCL) || defined(TCLSH) # include <tcl.h> | > > | 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | ** The _XOPEN_SOURCE define causes problems for Mac OS X we are told, ** so it is omitted there. See ticket #2673. ** ** Later we learn that _XOPEN_SOURCE is poorly or incorrectly ** implemented on some systems. So we avoid defining it at all ** if it is already defined or if it is unneeded because we are ** not doing a threadsafe build. Ticket #2681. ** ** See also ticket #2741. */ #if !defined(_XOPEN_SOURCE) && !defined(__MACOS__) && SQLITE_THREADSAFE # define _XOPEN_SOURCE 500 /* Needed to enable pthread recursive mutexes */ #endif #if defined(SQLITE_TCL) || defined(TCLSH) # include <tcl.h> |
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