1 /*
   2  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #include <windows.h>
  27 #include "jni_util.h"
  28 #include "PersistentTreeMap.h"
  29 
  30 #ifndef BDB_LIB_NAME
  31 #define BDB_LIB_NAME "db-rds.dll";
  32 #endif
  33 
  34 void ThrowException(JNIEnv *env)
  35 {
  36     char szMessage[1024];
  37     szMessage[0] = '\0';
  38     FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
  39                   MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
  40                   szMessage, 1024, NULL);
  41     JNU_ThrowInternalError(env, szMessage);
  42 }
  43 
  44 
  45 // Loads the appripriate BDB library. There will be a
  46 // pending exception if this method fails.
  47 void loadLibrary(JNIEnv* env)
  48 {
  49     HMODULE handle = NULL;
  50     const char* libdb = BDB_LIB_NAME;
  51 
  52     if ((handle = LoadLibrary(libdb)) == NULL) {
  53         ThrowException(env);
  54         return;
  55     }
  56 
  57     if ((libdb_db_create = (db_create_func*)
  58             GetProcAddress(handle, "db_create")) == NULL) {
  59         ThrowException(env);
  60         return;
  61     }
  62 
  63     if ((libdb_db_strerror = (db_strerror_func*)
  64             GetProcAddress(handle, "db_strerror")) == NULL) {
  65         ThrowException(env);
  66     }
  67 }
  68