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1 /*
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2 * Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 # include "incls/_precompiled.incl"
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26 # include "incls/_hpi_linux.cpp.incl"
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27
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28 # include <sys/param.h>
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29 # include <dlfcn.h>
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30
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31 typedef jint (JNICALL *init_t)(GetInterfaceFunc *, void *);
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32
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33 void hpi::initialize_get_interface(vm_calls_t *callbacks) {
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34 char buf[JVM_MAXPATHLEN];
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35 void *hpi_handle;
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36 GetInterfaceFunc& getintf = _get_interface;
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37 jint (JNICALL * DLL_Initialize)(GetInterfaceFunc *, void *);
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38
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39 if (HPILibPath && HPILibPath[0]) {
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40 strncpy(buf, HPILibPath, JVM_MAXPATHLEN - 1);
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41 buf[JVM_MAXPATHLEN - 1] = '\0';
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42 } else {
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43 const char *thread_type = "native_threads";
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44
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45 os::jvm_path(buf, JVM_MAXPATHLEN);
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46
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47 #ifdef PRODUCT
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48 const char * hpi_lib = "/libhpi.so";
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49 #else
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50 char * ptr = strrchr(buf, '/');
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51 assert(strstr(ptr, "/libjvm") == ptr, "invalid library name");
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52 const char * hpi_lib = strstr(ptr, "_g") ? "/libhpi_g.so" : "/libhpi.so";
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53 #endif
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54
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55 *(strrchr(buf, '/')) = '\0'; /* get rid of /libjvm.so */
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56 char* p = strrchr(buf, '/');
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57 if (p != NULL) p[1] = '\0'; /* get rid of hotspot */
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58 strcat(buf, thread_type);
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59 strcat(buf, hpi_lib);
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60 }
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61
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62 if (TraceHPI) tty->print_cr("Loading HPI %s ", buf);
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63 #ifdef SPARC
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64 // On 64-bit Ubuntu Sparc RTLD_NOW leads to unresolved deps in libpthread.so
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65 # define OPEN_MODE RTLD_LAZY
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66 #else
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67 // We use RTLD_NOW because of bug 4032715
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68 # define OPEN_MODE RTLD_NOW
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69 #endif
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70 hpi_handle = dlopen(buf, OPEN_MODE);
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71 #undef OPEN_MODE
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72
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73 if (hpi_handle == NULL) {
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74 if (TraceHPI) tty->print_cr("HPI dlopen failed: %s", dlerror());
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75 return;
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76 }
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77 DLL_Initialize = CAST_TO_FN_PTR(jint (JNICALL *)(GetInterfaceFunc *, void *),
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78 dlsym(hpi_handle, "DLL_Initialize"));
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79 if (TraceHPI && DLL_Initialize == NULL) tty->print_cr("HPI dlsym of DLL_Initialize failed: %s", dlerror());
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80 if (DLL_Initialize == NULL ||
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81 (*DLL_Initialize)(&getintf, callbacks) < 0) {
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82 if (TraceHPI) tty->print_cr("HPI DLL_Initialize failed");
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83 return;
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84 }
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85 if (TraceHPI) tty->print_cr("HPI loaded successfully");
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86 }
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