1 /*

     2  * Copyright 1998-2006 Sun Microsystems, Inc.  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.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    24 

    25 # include "incls/_precompiled.incl"

    26 # include "incls/_hpi_windows.cpp.incl"

    27 

    28 typedef jint (JNICALL *init_t)(GetInterfaceFunc *, void *);

    29 

    30 void hpi::initialize_get_interface(vm_calls_t *callbacks)

    31 {

    32   // Build name of HPI.

    33   char lib_name[JVM_MAXPATHLEN];

    34 

    35   if (HPILibPath && HPILibPath[0]) {

    36     strncpy(lib_name, HPILibPath, JVM_MAXPATHLEN - 1);

    37     lib_name[JVM_MAXPATHLEN - 1] = '\0';

    38   } else {

    39     os::jvm_path(lib_name, sizeof lib_name);

    40 

    41 #ifdef PRODUCT

    42     const char *hpi_lib = "\\hpi.dll";

    43 #else

    44     char *ptr = strrchr(lib_name, '\\');

    45     //  On Win98 GetModuleFileName() returns the path in the upper case.

    46     assert(_strnicmp(ptr, "\\jvm",4) == 0, "invalid library name");

    47     const char *hpi_lib = (_strnicmp(ptr, "\\jvm_g",6) == 0) ? "\\hpi_g.dll" : "\\hpi.dll";

    48 #endif

    49 

    50     *(::strrchr(lib_name, '\\')) = '\0';  /* get rid of "\\jvm.dll" */

    51     char *p = ::strrchr(lib_name, '\\');

    52     if (p != NULL) *p = '\0';             /* get rid of "\\hotspot" */

    53     strcat(lib_name, hpi_lib);

    54   }

    55 

    56   // Load it.

    57   if (TraceHPI) tty->print_cr("Loading HPI %s ", lib_name);

    58   HINSTANCE lib_handle = LoadLibrary(lib_name);

    59   if (lib_handle == NULL) {

    60     if (TraceHPI) tty->print_cr("LoadLibrary failed, code = %d", GetLastError());

    61     return;

    62   }

    63 

    64   // Find hpi initializer.

    65   init_t initer = (init_t)GetProcAddress(lib_handle, "DLL_Initialize");

    66   if (initer == NULL) {

    67     if (TraceHPI) tty->print_cr("GetProcAddress failed, errcode = %d", GetLastError());

    68     return;

    69   }

    70 

    71   // Call initializer.

    72   jint init_result = (*initer)(&_get_interface, callbacks);

    73   if (init_result < 0) {

    74     if (TraceHPI) tty->print_cr("DLL_Initialize failed, returned %ld", init_result);

    75     return;

    76   }

    77 

    78   if (TraceHPI) tty->print_cr("success");

    79   return;

    80 }