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Overview
| Comment: | Change the way IO errors are handled in the xFileSize method of the multiplexor VFS. Add test file multiplex3.test. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | experimental |
| Files: | files | file ages | folders |
| SHA1: |
255d21499bab19ad865cd769eef49317 |
| User & Date: | dan 2011-12-13 11:15:13 |
References
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2011-12-13
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| 15:02 | Move the multiplexor changes in the experimental branch (check-ins [255d21499b] and [199f52bced]) into the nx-devkit branch. check-in: eb95d2f7 user: drh tags: nx-devkit | |
Context
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2011-12-13
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| 12:10 | This branch merged with nx-devkit and from there into trunk. Was: In the multiplexor, instead of generating a unique file-name when SQLite opens a temp file, allow the underlying VFS to generate a different temp file for each chunk. Given the changes to the xFileSize method, it is no longer necessary for the different chunks of a temp file to use the same base name. Closed-Leaf check-in: 199f52bc user: dan tags: experimental | |
| 11:15 | Change the way IO errors are handled in the xFileSize method of the multiplexor VFS. Add test file multiplex3.test. check-in: 255d2149 user: dan tags: experimental | |
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2011-12-12
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| 19:48 | Fix os_unix.c so that, unless 8.3 filenames are actually in use, journal and wal file permissions are assigned correctly even if SQLITE_ENABLE_8_3_NAMES is defined. check-in: 169e1229 user: dan tags: trunk | |
Changes
Changes to src/test_multiplex.c.
792 792 /* Pass xFileSize requests through to the original VFS. 793 793 ** Aggregate the size of all the chunks before returning. 794 794 */ 795 795 static int multiplexFileSize(sqlite3_file *pConn, sqlite3_int64 *pSize){ 796 796 multiplexConn *p = (multiplexConn*)pConn; 797 797 multiplexGroup *pGroup = p->pGroup; 798 798 int rc = SQLITE_OK; 799 - int rc2; 800 799 int i; 801 800 multiplexEnter(); 802 801 if( !pGroup->bEnabled ){ 803 802 sqlite3_file *pSubOpen = multiplexSubOpen(pGroup, 0, &rc, NULL); 804 803 if( pSubOpen==0 ){ 805 804 rc = SQLITE_IOERR_FSTAT; 806 805 }else{ 807 806 rc = pSubOpen->pMethods->xFileSize(pSubOpen, pSize); 808 807 } 809 808 }else{ 810 809 sqlite3_vfs *pOrigVfs = gMultiplex.pOrigVfs; 811 810 *pSize = 0; 812 - for(i=0; 1; i++){ 811 + for(i=0; rc==SQLITE_OK; i++){ 813 812 sqlite3_file *pSubOpen = 0; 814 813 int exists = 0; 815 814 rc = multiplexSubFilename(pGroup, i); 816 - if( rc ) break; 817 - if( pGroup->flags & SQLITE_OPEN_DELETEONCLOSE ){ 818 - exists = pGroup->nReal>=i && pGroup->aReal[i].p!=0; 819 - rc2 = SQLITE_OK; 815 + if( rc!=SQLITE_OK ) break; 816 + if( pGroup->nReal>i && pGroup->aReal[i].p!=0 ){ 817 + exists = 1; 820 818 }else{ 821 - rc2 = pOrigVfs->xAccess(pOrigVfs, pGroup->aReal[i].z, 822 - SQLITE_ACCESS_EXISTS, &exists); 819 + const char *zReal = pGroup->aReal[i].z; 820 + rc = pOrigVfs->xAccess(pOrigVfs, zReal, SQLITE_ACCESS_EXISTS, &exists); 823 821 } 824 - if( rc2==SQLITE_OK && exists){ 825 - /* if it exists, open it */ 826 - pSubOpen = multiplexSubOpen(pGroup, i, &rc, NULL); 827 - }else{ 828 - /* stop at first "gap" */ 822 + if( exists==0 ){ 823 + /* stop at first "gap" or IO error. */ 829 824 break; 830 825 } 831 - if( pSubOpen ){ 832 - sqlite3_int64 sz; 833 - rc2 = pSubOpen->pMethods->xFileSize(pSubOpen, &sz); 834 - if( rc2!=SQLITE_OK ){ 835 - rc = rc2; 836 - }else{ 837 - if( sz>pGroup->szChunk ){ 838 - rc = SQLITE_IOERR_FSTAT; 839 - } 840 - *pSize += sz; 826 + if( rc==SQLITE_OK ){ 827 + pSubOpen = multiplexSubOpen(pGroup, i, &rc, NULL); 828 + } 829 + assert( pSubOpen || rc!=SQLITE_OK ); 830 + if( rc==SQLITE_OK ){ 831 + sqlite3_int64 sz = 0; 832 + rc = pSubOpen->pMethods->xFileSize(pSubOpen, &sz); 833 + if( rc==SQLITE_OK && sz>pGroup->szChunk ){ 834 + rc = SQLITE_IOERR_FSTAT; 841 835 } 842 - }else{ 843 - break; 836 + *pSize += sz; 844 837 } 845 838 } 846 839 } 847 840 multiplexLeave(); 848 841 return rc; 849 842 } 850 843
Changes to test/multiplex.test.
9 9 # 10 10 #*********************************************************************** 11 11 # 12 12 13 13 set testdir [file dirname $argv0] 14 14 source $testdir/tester.tcl 15 15 source $testdir/malloc_common.tcl 16 + 17 +# The tests in this file assume that SQLite is compiled without 18 +# ENABLE_8_3_NAMES. 19 +# 20 +ifcapable 8_3_names { 21 + puts -nonewline "SQLite compiled with SQLITE_ENABLE_8_3_NAMES. " 22 + puts "Skipping tests multiplex-*." 23 + finish_test 24 + return 25 +} 16 26 17 27 set g_chunk_size [ expr ($::SQLITE_MAX_PAGE_SIZE*16384) ] 18 28 set g_max_chunks 32 19 29 20 30 # This handles appending the chunk number 21 31 # to the end of the filename. if 22 32 # SQLITE_MULTIPLEX_EXT_OVWR is defined, then
Added test/multiplex3.test.
1 + 2 +# 2011 December 13 3 +# 4 +# The author disclaims copyright to this source code. In place of 5 +# a legal notice, here is a blessing: 6 +# 7 +# May you do good and not evil. 8 +# May you find forgiveness for yourself and forgive others. 9 +# May you share freely, never taking more than you give. 10 +# 11 +#*********************************************************************** 12 +# 13 +# This file contains tests for error (IO, OOM etc.) handling when using 14 +# the multiplexor extension with 8.3 filenames. 15 +# 16 + 17 +set testdir $env(SQLITE_TEST_DIR) 18 +source $testdir/tester.tcl 19 +source $testdir/malloc_common.tcl 20 +set ::testprefix multiplex3 21 + 22 +ifcapable !8_3_names { 23 + puts -nonewline "SQLite compiled without SQLITE_ENABLE_8_3_NAMES. " 24 + puts "Skipping tests zipvfsD-*." 25 + finish_test 26 + return 27 +} 28 + 29 +db close 30 +sqlite3_shutdown 31 +sqlite3_config_uri 1 32 +autoinstall_test_functions 33 + 34 +sqlite3_multiplex_initialize "" 1 35 + 36 +proc destroy_vfs_stack {} { 37 + generic_unregister stack 38 + sqlite3_multiplex_shutdown 39 +} 40 + 41 +proc multiplex_delete_db {} { 42 + forcedelete test.db 43 + for {set i 1} {$i <= 1000} {incr i} { 44 + forcedelete test.[format %03d $i] 45 + } 46 +} 47 + 48 +# Procs to save and restore the current muliplexed database. 49 +# 50 +proc multiplex_save_db {} { 51 + foreach f [glob -nocomplain sv_test.*] { forcedelete $f } 52 + foreach f [glob -nocomplain test.*] { forcecopy $f "sv_$f" } 53 +} 54 +proc multiplex_restore_db {} { 55 + foreach f [glob -nocomplain test.*] {forcedelete $f} 56 + foreach f [glob -nocomplain sv_test.*] {forcecopy $f [string range $f 3 end]} } 57 + 58 + 59 +do_test 1.0 { 60 + multiplex_delete_db 61 + sqlite3 db file:test.db?8_3_names=1 62 + sqlite3_multiplex_control db main chunk_size [expr 256*1024] 63 + execsql { 64 + CREATE TABLE t1(a PRIMARY KEY, b); 65 + INSERT INTO t1 VALUES(randomblob(15), randomblob(2000)); 66 + INSERT INTO t1 SELECT randomblob(15), randomblob(2000) FROM t1; -- 2 67 + INSERT INTO t1 SELECT randomblob(15), randomblob(2000) FROM t1; -- 4 68 + INSERT INTO t1 SELECT randomblob(15), randomblob(2000) FROM t1; -- 8 69 + INSERT INTO t1 SELECT randomblob(15), randomblob(2000) FROM t1; -- 16 70 + INSERT INTO t1 SELECT randomblob(15), randomblob(2000) FROM t1; -- 32 71 + INSERT INTO t1 SELECT randomblob(15), randomblob(2000) FROM t1; -- 64 72 + INSERT INTO t1 SELECT randomblob(15), randomblob(2000) FROM t1; -- 128 73 + INSERT INTO t1 SELECT randomblob(15), randomblob(2000) FROM t1; -- 256 74 + INSERT INTO t1 SELECT randomblob(15), randomblob(2000) FROM t1; -- 512 75 + } 76 + set ::cksum1 [execsql {SELECT md5sum(a, b) FROM t1 ORDER BY a}] 77 + db close 78 + multiplex_save_db 79 +} {} 80 + 81 +do_faultsim_test 1 -prep { 82 + multiplex_restore_db 83 + sqlite3 db file:test.db?8_3_names=1 84 + sqlite3_multiplex_control db main chunk_size [expr 256*1024] 85 +} -body { 86 + execsql "UPDATE t1 SET a=randomblob(12), b=randomblob(1500) WHERE (rowid%32)=0" 87 +} -test { 88 + faultsim_test_result {0 {}} 89 + if {$testrc!=0} { 90 + set cksum2 [execsql {SELECT md5sum(a, b) FROM t1 ORDER BY a}] 91 + if {$cksum2 != $::cksum1} { error "data mismatch" } 92 + } 93 +} 94 + 95 +catch { db close } 96 + 97 +sqlite3_multiplex_shutdown 98 +finish_test 99 +