mirror of https://github.com/sqlite/sqlite
Misc clean up. Wrapped a CE only variable in if-defs. Changed to only provide cache hint for CE builds (as this prevents CE from compressing the file.) Performance testing on XP and Vista showed caching hint had little effect when the DB size was much smaller than the O/S disk cache size, and provided only marginal benefit when the DB size was much larger than the cache. On Vista, overall system performance was hurt for very large DBs. Ticket #3387. (CVS 5753)
FossilOrigin-Name: 15dd0169a4c5e2ff9e3894eec10799cb89d462e5
This commit is contained in:
shane
parent
798fadd14c
commit
d94b0556f8
14
manifest
14
manifest
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@ -1,5 +1,5 @@
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C A\sfew\sminor\schanges\sto\stest\sscripts\sso\sthat\sthey\swork\son\slinux-amd64.\s(CVS\s5752)
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D 2008-09-30T00:31:38
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C Misc\sclean\sup.\s\sWrapped\sa\sCE\sonly\svariable\sin\sif-defs.\sChanged\sto\sonly\sprovide\scache\shint\sfor\sCE\sbuilds\s(as\sthis\sprevents\sCE\sfrom\scompressing\sthe\sfile.)\sPerformance\stesting\son\sXP\sand\sVista\sshowed\scaching\shint\shad\slittle\seffect\swhen\sthe\sDB\ssize\swas\smuch\ssmaller\sthan\sthe\sO/S\sdisk\scache\ssize,\sand\sprovided\sonly\smarginal\sbenefit\swhen\sthe\sDB\ssize\swas\smuch\slarger\sthan\sthe\scache.\s\sOn\sVista,\soverall\ssystem\sperformance\swas\shurt\sfor\svery\slarge\sDBs.\s\sTicket\s#3387.\s(CVS\s5753)
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D 2008-09-30T04:20:08
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F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
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F Makefile.in e4ab842f9a64ef61d57093539a8aab76b12810db
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F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
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@ -136,7 +136,7 @@ F src/os.h ef8abeb9afc694b82dbd169a91c9b7e26db3c892
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F src/os_common.h 24525d8b7bce66c374dfc1810a6c9043f3359b60
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F src/os_os2.c e391fc95adc744bbdcefd4d11e3066998185a0a0
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F src/os_unix.c f33b69d8a85372b270fe37ee664a4c2140a5217d
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F src/os_win.c 3209dc0ed734291764393ea8d534ba0d8696a540
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F src/os_win.c 04033a86a39f49cb8e348f515eb0116aa9d36678
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F src/pager.c 44eba010e81dcc9b772401b90d6a1c61ec24345b
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F src/pager.h 9c1917be28fff58118e1fe0ddbc7adfb8dd4f44d
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F src/parse.y d0f76d2cb8d6883d5600dc20beb961a6022b94b8
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@ -637,7 +637,7 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
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F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
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F tool/speedtest8.c 1dbced29de5f59ba2ebf877edcadf171540374d1
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F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
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P 35e8e4dcd24b050b535ae005ca3b25e6a673eb89
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R 9074d4b98a3d572c308fa30be3a7f773
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U drh
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Z fbd675315e0378308c18a28ef87a5133
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P 78d075ff38d96cc58659a7097dec0e49402aa960
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R 39be9f2940749141be589318f7d2a538
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U shane
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Z b381b1aa9c52e2148aadad6fea9866f7
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@ -1 +1 @@
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78d075ff38d96cc58659a7097dec0e49402aa960
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15dd0169a4c5e2ff9e3894eec10799cb89d462e5
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21
src/os_win.c
21
src/os_win.c
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@ -12,7 +12,7 @@
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**
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** This file contains code that is specific to windows.
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**
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** $Id: os_win.c,v 1.133 2008/09/01 22:15:19 shane Exp $
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** $Id: os_win.c,v 1.134 2008/09/30 04:20:08 shane Exp $
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*/
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#include "sqliteInt.h"
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#if SQLITE_OS_WIN /* This file is used for windows only */
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@ -610,7 +610,7 @@ static int winClose(sqlite3_file *id){
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OSTRACE2("CLOSE %d\n", pFile->h);
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do{
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rc = CloseHandle(pFile->h);
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}while( rc==0 && cnt++ < MX_CLOSE_ATTEMPT && (Sleep(100), 1) );
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}while( rc==0 && ++cnt < MX_CLOSE_ATTEMPT && (Sleep(100), 1) );
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#if SQLITE_OS_WINCE
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#define WINCE_DELETION_ATTEMPTS 3
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winceDestroyLock(pFile);
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@ -1177,7 +1177,9 @@ static int winOpen(
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DWORD dwShareMode;
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DWORD dwCreationDisposition;
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DWORD dwFlagsAndAttributes = 0;
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int isTemp;
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#if SQLITE_OS_WINCE
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int isTemp = 0;
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#endif
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winFile *pFile = (winFile*)id;
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void *zConverted; /* Filename in OS encoding */
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const char *zUtf8Name = zName; /* Filename in UTF-8 encoding */
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@ -1218,19 +1220,20 @@ static int winOpen(
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if( flags & SQLITE_OPEN_DELETEONCLOSE ){
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#if SQLITE_OS_WINCE
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dwFlagsAndAttributes = FILE_ATTRIBUTE_HIDDEN;
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isTemp = 1;
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#else
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dwFlagsAndAttributes = FILE_ATTRIBUTE_TEMPORARY
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| FILE_ATTRIBUTE_HIDDEN
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| FILE_FLAG_DELETE_ON_CLOSE;
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#endif
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isTemp = 1;
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}else{
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dwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL;
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isTemp = 0;
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}
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/* Reports from the internet are that performance is always
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** better if FILE_FLAG_RANDOM_ACCESS is used. Ticket #2699. */
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#if SQLITE_OS_WINCE
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dwFlagsAndAttributes |= FILE_FLAG_RANDOM_ACCESS;
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#endif
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if( isNT() ){
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h = CreateFileW((WCHAR*)zConverted,
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dwDesiredAccess,
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@ -1308,7 +1311,7 @@ static int winDelete(
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int syncDir /* Not used on win32 */
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){
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int cnt = 0;
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int rc;
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DWORD rc;
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DWORD error;
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void *zConverted = convertUtf8Filename(zFilename);
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if( zConverted==0 ){
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@ -1320,19 +1323,19 @@ static int winDelete(
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DeleteFileW(zConverted);
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}while( ( ((rc = GetFileAttributesW(zConverted)) != INVALID_FILE_ATTRIBUTES)
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|| ((error = GetLastError()) == ERROR_ACCESS_DENIED))
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&& (cnt++ < MX_DELETION_ATTEMPTS)
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&& (++cnt < MX_DELETION_ATTEMPTS)
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&& (Sleep(100), 1) );
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}else{
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do{
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DeleteFileA(zConverted);
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}while( ( ((rc = GetFileAttributesA(zConverted)) != INVALID_FILE_ATTRIBUTES)
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|| ((error = GetLastError()) == ERROR_ACCESS_DENIED))
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&& (cnt++ < MX_DELETION_ATTEMPTS)
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&& (++cnt < MX_DELETION_ATTEMPTS)
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&& (Sleep(100), 1) );
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}
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free(zConverted);
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OSTRACE2("DELETE \"%s\"\n", zFilename);
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return ( (rc==INVALID_FILE_ATTRIBUTES)
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return ( (rc == INVALID_FILE_ATTRIBUTES)
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&& (error == ERROR_FILE_NOT_FOUND)) ? SQLITE_OK : SQLITE_IOERR_DELETE;
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}
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