In windows, always open files using FILE_FLAG_RANDOM_ACCESS. Ticket #2699. (CVS 4476)

FossilOrigin-Name: 5cdbc0972fe94c13dffee1f908a77f903e580449

manifest

@@ -1,5 +1,5 @@
-C Fix\sa\smemory\sleak\sin\sthe\ssqlite3_realloc()\simplementation\sof\sthe\nnon-debugging\smemory\sallocator.\s(CVS\s4475)
-D 2007-10-06T01:40:35
+C In\swindows,\salways\sopen\sfiles\susing\sFILE_FLAG_RANDOM_ACCESS.\s\sTicket\s#2699.\s(CVS\s4476)
+D 2007-10-08T12:21:11
 F Makefile.in 75b729d562e9525d57d9890ec598b38e1a8b02bc
 F Makefile.linux-gcc 65241babba6faf1152bf86574477baab19190499
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -118,7 +118,7 @@ F src/os_test.c 49833426101f99aee4bb5f6a44b7c4b2029fda1c
 F src/os_test.h 903c93554c23d88f34f667f1979e4a1cee792af3
 F src/os_unix.c 308bd8ad6977f66f608228cccaecc4cbc1a24693
 F src/os_unix.h 5768d56d28240d3fe4537fac08cc85e4fb52279e
-F src/os_win.c b2b6aa5f72c84f24c2afd49abfa751abab0e5b79
+F src/os_win.c 713bb34665071eea35f2beab9100769135a669f5
 F src/os_win.h 41a946bea10f61c158ce8645e7646b29d44f122b
 F src/pager.c 0a92a08192785af79547b017cda45eb683b22552
 F src/pager.h d783e7f184afdc33adff37ba58d4e029bd8793b3
@@ -581,7 +581,7 @@ F www/tclsqlite.tcl 8be95ee6dba05eabcd27a9d91331c803f2ce2130
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl fc46eae081251c3c181bd79c5faef8195d7991a5
-P 4424357d17f615fab922780616eac6773535923a
-R 2ed601e13bd5dddd1e1e50775404fa02
+P 7e9b886dabf10557bc1aa80caad411809ce5a39f
+R 13066f59c06519a2ddde6fcb0c919448
 U drh
-Z de6ecf621e823f38d84bd35865827bb5
+Z e9c7224163b51697390aea6692707332

manifest.uuid

@@ -1 +1 @@
-7e9b886dabf10557bc1aa80caad411809ce5a39f
+5cdbc0972fe94c13dffee1f908a77f903e580449

src/os_win.c

@@ -1112,11 +1112,17 @@ static int winOpen(
   }else{
     dwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL;
   }
+#if 0
   if( flags & (SQLITE_OPEN_MAIN_DB | SQLITE_OPEN_TEMP_DB) ){
     dwFlagsAndAttributes |= FILE_FLAG_RANDOM_ACCESS;
   }else{
     dwFlagsAndAttributes |= FILE_FLAG_SEQUENTIAL_SCAN;
   }
+#else
+  /* Reports from the internet are that performance is always
+  ** better if FILE_FLAG_RANDOM_ACCESS is used.  Ticket #2699. */
+  dwFlagsAndAttributes |= FILE_FLAG_RANDOM_ACCESS;
+#endif
   if( isNT() ){
     h = CreateFileW((WCHAR*)zConverted,
        dwDesiredAccess,