From 14e61df2833c336641ed789c532d00b2b0f99d46 Mon Sep 17 00:00:00 2001
From: mistachkin <mistachkin@noemail.net>
Date: Thu, 29 Jun 2017 15:13:48 +0000
Subject: [PATCH] Further corrections to the Win32 interface for lsm1.

FossilOrigin-Name: 4df6e2476ce93b9ca7a6959c8c2d6ef2c30395984b007d74166031dcf09d54b4
---
 ext/lsm1/lsm_win32.c | 20 +++++++++++++-------
 manifest             | 16 ++++++++--------
 manifest.uuid        |  2 +-
 3 files changed, 22 insertions(+), 16 deletions(-)

diff --git a/ext/lsm1/lsm_win32.c b/ext/lsm1/lsm_win32.c
index b5a2011551..75e07c5643 100644
--- a/ext/lsm1/lsm_win32.c
+++ b/ext/lsm1/lsm_win32.c
@@ -572,6 +572,11 @@ static int lsmWin32OsUnlink(lsm_env *pEnv, const char *zFile){
   return win32Delete(pEnv, zFile);
 }
 
+#if !defined(win32IsLockBusy)
+#define win32IsLockBusy(a) (((a)==ERROR_LOCK_VIOLATION) || \
+                            ((a)==ERROR_IO_PENDING))
+#endif
+
 int lsmWin32OsLock(lsm_file *pFile, int iLock, int eType){
   Win32File *pWin32File = (Win32File *)pFile;
   OVERLAPPED ovlp;
@@ -588,7 +593,7 @@ int lsmWin32OsLock(lsm_file *pFile, int iLock, int eType){
     DWORD flags = LOCKFILE_FAIL_IMMEDIATELY;
     if( eType>=LSM_LOCK_EXCL ) flags |= LOCKFILE_EXCLUSIVE_LOCK;
     if( !LockFileEx(pWin32File->hFile, flags, 0, 1, 0, &ovlp) ){
-      if( GetLastError()==ERROR_IO_PENDING ){
+      if( win32IsLockBusy(GetLastError()) ){
         return LSM_BUSY;
       }else{
         return LSM_IOERR_BKPT;
@@ -618,7 +623,7 @@ int lsmWin32OsTestLock(lsm_file *pFile, int iLock, int nLock, int eType){
   memset(&ovlp, 0, sizeof(OVERLAPPED));
   ovlp.Offset = (4096-iLock);
   if( !LockFileEx(pWin32File->hFile, flags, 0, (DWORD)nLock, 0, &ovlp) ){
-    if( GetLastError()==ERROR_IO_PENDING ){
+    if( win32IsLockBusy(GetLastError()) ){
       return LSM_BUSY;
     }else{
       return LSM_IOERR_BKPT;
@@ -686,22 +691,23 @@ int lsmWin32OsShmMap(lsm_file *pFile, int iChunk, int sz, void **ppShm){
     pWin32File->nShm = nNew;
   }
 
-  if( pWin32File->apShm[iChunk]==NULL ){
+  if( pWin32File->ahShm[iChunk]==NULL ){
     HANDLE hMap;
-    LPVOID pMap;
     hMap = CreateFileMappingW(pWin32File->hShmFile, NULL, PAGE_READWRITE, 0,
                               (DWORD)sz, NULL);
     if( hMap==NULL ){
       return LSM_IOERR_BKPT;
     }
     pWin32File->ahShm[iChunk] = hMap;
-    pMap = MapViewOfFile(hMap, FILE_MAP_WRITE | FILE_MAP_READ, 0, 0,
-                         (SIZE_T)sz);
+  }
+  if( pWin32File->apShm[iChunk]==NULL ){
+    LPVOID pMap;
+    pMap = MapViewOfFile(pWin32File->ahShm[iChunk],
+                         FILE_MAP_WRITE | FILE_MAP_READ, 0, 0, (SIZE_T)sz);
     if( pMap==NULL ){
       return LSM_IOERR_BKPT;
     }
     pWin32File->apShm[iChunk] = pMap;
-    pWin32File->nMap = (SIZE_T)sz;
   }
   *ppShm = pWin32File->apShm[iChunk];
   return LSM_OK;
diff --git a/manifest b/manifest
index 9879fe10ff..ea0b006ee3 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Rename\sthe\s"stmts"\svirtual\stable\sto\sjust\s"stmt"\swithout\sthe\sfinal\s"s".
-D 2017-06-29T14:33:51.582
+C Further\scorrections\sto\sthe\sWin32\sinterface\sfor\slsm1.
+D 2017-06-29T15:13:48.585
 F Makefile.in 081e48dfe7f995d57ce1a88ddf4d2917b4349158648a6cd45b42beae30de3a12
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc 4ebb1d257cac7fb1bcb4ba59278416d410ff1c4bf59447a9c37a415f3516056a
@@ -250,7 +250,7 @@ F ext/lsm1/lsm_tree.c 5d9fb2bc58a1a70c75126bd8d7198f7b627e165b
 F ext/lsm1/lsm_unix.c ee0201dff10ce2008ef13a65f52a6ea348f287e795270f651596f812fcfccdcc
 F ext/lsm1/lsm_varint.c b19ae9bd26b5a1e8402fb8a564b25d9542338a41
 F ext/lsm1/lsm_vtab.c fff303ce03168eca9e333add3c1429b3471674b0
-F ext/lsm1/lsm_win32.c c7a9e2c6b6465292c27e58a5defb1427181ff7bcfde6f46a4afd6de272a4ef3b
+F ext/lsm1/lsm_win32.c 385e85a38dd0f2d7c9d0ca9336b891a92765765aaa769d577673cac7ffe96fd7
 F ext/misc/README.md 8e008c8d2b02e09096b31dfba033253ac27c6c06a18aa5826e299fa7601d90b2
 F ext/misc/amatch.c 6db4607cb17c54b853a2d7c7c36046d004853f65b9b733e6f019d543d5dfae87
 F ext/misc/anycollseq.c 5ffdfde9829eeac52219136ad6aa7cd9a4edb3b15f4f2532de52f4a22525eddb
@@ -276,7 +276,7 @@ F ext/misc/sha1.c 0b9e9b855354910d3ca467bf39099d570e73db56
 F ext/misc/shathree.c fa185d7aee0ad0aca5e091b4a2db7baff11796170e5793b5de99e511a13af448
 F ext/misc/showauth.c 732578f0fe4ce42d577e1c86dc89dd14a006ab52
 F ext/misc/spellfix.c a4723b6aff748a417b5091b68a46443265c40f0d
-F ext/misc/stmt.c 619222bc1752a7a8412bda2d9b97337c4bc67a1ddee0efcba0eb6f439f25ce5a w ext/misc/stmts.c
+F ext/misc/stmt.c 619222bc1752a7a8412bda2d9b97337c4bc67a1ddee0efcba0eb6f439f25ce5a
 F ext/misc/totype.c 4a167594e791abeed95e0a8db028822b5e8fe512
 F ext/misc/vfslog.c fe40fab5c077a40477f7e5eba994309ecac6cc95
 F ext/misc/vfsstat.c bf10ef0bc51e1ad6756629e1edb142f7a8db1178
@@ -1627,7 +1627,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P ebbd98e941d8a8ea97b434c29b70095515af0adab1977aa4d37fe74a7401f846
-R 227414f0a87c66eaa518fb66692c2aa3
-U drh
-Z 4008bc0c583622d13bed9769f9852f41
+P adfdb80105c46ac42b71132c80a91dbd5b1c9ff241fb4fbb5d04641a88898d90
+R ef8d689596b1b0f39f6ae35de6ffda86
+U mistachkin
+Z c36edb8fe864971f5a22ea12e57f4f5d
diff --git a/manifest.uuid b/manifest.uuid
index a708900239..3efb9e815a 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-adfdb80105c46ac42b71132c80a91dbd5b1c9ff241fb4fbb5d04641a88898d90
\ No newline at end of file
+4df6e2476ce93b9ca7a6959c8c2d6ef2c30395984b007d74166031dcf09d54b4
\ No newline at end of file