diff options
Diffstat (limited to 'plugins/Db3x_mmap/src/database.cpp')
| -rw-r--r-- | plugins/Db3x_mmap/src/database.cpp | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/plugins/Db3x_mmap/src/database.cpp b/plugins/Db3x_mmap/src/database.cpp new file mode 100644 index 0000000000..1962805a35 --- /dev/null +++ b/plugins/Db3x_mmap/src/database.cpp @@ -0,0 +1,121 @@ +/*
+
+Miranda NG: the free IM client for Microsoft* Windows*
+
+Copyright 2012 Miranda NG project,
+all portions of this codebase are copyrighted to the people
+listed in contributors.txt.
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#include "commonheaders.h"
+
+int InitModuleNames(void);
+int InitCache(void);
+int InitIni(void);
+void UninitIni(void);
+
+DWORD CDdxMmap::CreateNewSpace(int bytes)
+{
+ DWORD ofsNew = m_dbHeader.ofsFileEnd;
+ m_dbHeader.ofsFileEnd += bytes;
+ DBWrite(0, &m_dbHeader, sizeof(m_dbHeader));
+ log2("newspace %d@%08x", bytes, ofsNew);
+ return ofsNew;
+}
+
+void CDdxMmap::DeleteSpace(DWORD ofs, int bytes)
+{
+ if (ofs+bytes == m_dbHeader.ofsFileEnd) {
+ log2("freespace %d@%08x",bytes,ofs);
+ m_dbHeader.ofsFileEnd = ofs;
+ }
+ else {
+ log2("deletespace %d@%08x",bytes,ofs);
+ m_dbHeader.slackSpace += bytes;
+ }
+ DBWrite(0, &m_dbHeader, sizeof(m_dbHeader));
+ DBFill(ofs, bytes);
+}
+
+DWORD CDdxMmap::ReallocSpace(DWORD ofs, int oldSize, int newSize)
+{
+ if (oldSize >= newSize)
+ return ofs;
+
+ DWORD ofsNew;
+ if (ofs+oldSize == m_dbHeader.ofsFileEnd) {
+ ofsNew = ofs;
+ m_dbHeader.ofsFileEnd += newSize-oldSize;
+ DBWrite(0,&m_dbHeader,sizeof(m_dbHeader));
+ log3("adding newspace %d@%08x+%d", newSize, ofsNew, oldSize);
+ }
+ else {
+ ofsNew = CreateNewSpace(newSize);
+ DBMoveChunk(ofsNew,ofs,oldSize);
+ DeleteSpace(ofs,oldSize);
+ }
+ return ofsNew;
+}
+
+/////////////////////////////////////////////////////////////////////////////////////////
+
+static DWORD DatabaseCorrupted = 0;
+static TCHAR *msg = NULL;
+static DWORD dwErr = 0;
+
+void __cdecl dbpanic(void *arg)
+{
+ if (msg)
+ {
+ TCHAR err[256];
+
+ if (dwErr == ERROR_DISK_FULL)
+ msg = TranslateT("Disk is full. Miranda will now shutdown.");
+
+ mir_sntprintf(err, SIZEOF(err), msg, TranslateT("Database failure. Miranda will now shutdown."), dwErr);
+
+ MessageBox(0,err,TranslateT("Database Error"),MB_SETFOREGROUND|MB_TOPMOST|MB_APPLMODAL|MB_ICONWARNING|MB_OK);
+ }
+ else
+ MessageBox(0,TranslateT("Miranda has detected corruption in your database. This corruption maybe fixed by DBTool. Please download it from http://nightly.miranda.im/. Miranda will now shutdown."),
+ TranslateT("Database Panic"),MB_SETFOREGROUND|MB_TOPMOST|MB_APPLMODAL|MB_ICONWARNING|MB_OK);
+ TerminateProcess(GetCurrentProcess(),255);
+}
+
+void CDdxMmap::DatabaseCorruption(TCHAR *text)
+{
+ int kill = 0;
+
+ EnterCriticalSection(&m_csDbAccess);
+ if (DatabaseCorrupted == 0) {
+ DatabaseCorrupted++;
+ kill++;
+ msg = text;
+ dwErr = GetLastError();
+ } else {
+ /* db is already corrupted, someone else is dealing with it, wait here
+ so that we don't do any more damage */
+ LeaveCriticalSection(&m_csDbAccess);
+ Sleep(INFINITE);
+ return;
+ }
+ LeaveCriticalSection(&m_csDbAccess);
+ if (kill) {
+ _beginthread(dbpanic,0,NULL);
+ Sleep(INFINITE);
+ }
+}
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