/*

 * Copyright 1999-2006 Sun Microsystems, Inc.  All Rights Reserved.

 * 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.

 *

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

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

 * have any questions.

 *

 */

# include "incls/_precompiled.incl"

# include "incls/_hpi_linux.cpp.incl"

# include <sys/param.h>

# include <dlfcn.h>

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

void hpi::initialize_get_interface(vm_calls_t *callbacks) {

    char buf[JVM_MAXPATHLEN];

    void *hpi_handle;

    GetInterfaceFunc& getintf = _get_interface;

    jint (JNICALL * DLL_Initialize)(GetInterfaceFunc *, void *);

    if (HPILibPath && HPILibPath[0]) {

      strncpy(buf, HPILibPath, JVM_MAXPATHLEN - 1);

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

    } else {

      const char *thread_type = "native_threads";

      os::jvm_path(buf, JVM_MAXPATHLEN);

#ifdef PRODUCT

      const char * hpi_lib = "/libhpi.so";

#else

      char * ptr = strrchr(buf, '/');

      assert(strstr(ptr, "/libjvm") == ptr, "invalid library name");

      const char * hpi_lib = strstr(ptr, "_g") ? "/libhpi_g.so" : "/libhpi.so";

#endif

      *(strrchr(buf, '/')) = '\0';  /* get rid of /libjvm.so */

      char* p = strrchr(buf, '/');

      if (p != NULL) p[1] = '\0';   /* get rid of hotspot    */

      strcat(buf, thread_type);

      strcat(buf, hpi_lib);

    }

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

#ifdef SPARC

    // On 64-bit Ubuntu Sparc RTLD_NOW leads to unresolved deps in libpthread.so

#   define OPEN_MODE RTLD_LAZY

#else

    // We use RTLD_NOW because of bug 4032715

#   define OPEN_MODE RTLD_NOW

#endif

    hpi_handle = dlopen(buf, OPEN_MODE);

#undef OPEN_MODE

    if (hpi_handle == NULL) {

        if (TraceHPI) tty->print_cr("HPI dlopen failed: %s", dlerror());

        return;

    }

    DLL_Initialize = CAST_TO_FN_PTR(jint (JNICALL *)(GetInterfaceFunc *, void *),

                                    dlsym(hpi_handle, "DLL_Initialize"));

    if (TraceHPI && DLL_Initialize == NULL) tty->print_cr("HPI dlsym of DLL_Initialize failed: %s", dlerror());

    if (DLL_Initialize == NULL ||

        (*DLL_Initialize)(&getintf, callbacks) < 0) {

        if (TraceHPI) tty->print_cr("HPI DLL_Initialize failed");

        return;

    }

    if (TraceHPI)  tty->print_cr("HPI loaded successfully");

}