/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

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

 * accompanied this code).

 *

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

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

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

 *

 *

 */

# include "incls/_precompiled.incl"

# include "incls/_hpi_windows.cpp.incl"

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

void hpi::initialize_get_interface(vm_calls_t *callbacks)

{

  // Build name of HPI.

  char lib_name[JVM_MAXPATHLEN];

  if (HPILibPath && HPILibPath[0]) {

    strncpy(lib_name, HPILibPath, JVM_MAXPATHLEN - 1);

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

  } else {

    os::jvm_path(lib_name, sizeof lib_name);

#ifdef PRODUCT

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

#else

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

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

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

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

#endif

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

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

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

    strcat(lib_name, hpi_lib);

  }

  // Load it.

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

  HINSTANCE lib_handle = LoadLibrary(lib_name);

  if (lib_handle == NULL) {

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

    return;

  }

  // Find hpi initializer.

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

  if (initer == NULL) {

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

    return;

  }

  // Call initializer.

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

  if (init_result < 0) {

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

    return;

  }

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

  return;

}