1 /* 2 * Copyright (c) 1998, 2010, 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. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "oops/oop.inline.hpp" 27 #include "runtime/hpi.hpp" 28 #include "runtime/os.hpp" 29 30 # include <sys/param.h> 31 # include <dlfcn.h> 32 33 typedef jint (JNICALL *init_t)(GetInterfaceFunc *, void *); 34 35 void hpi::initialize_get_interface(vm_calls_t *callbacks) 36 { 37 char buf[JVM_MAXPATHLEN]; 38 void *hpi_handle; 39 GetInterfaceFunc& getintf = _get_interface; 40 jint (JNICALL * DLL_Initialize)(GetInterfaceFunc *, void *); 41 42 if (HPILibPath && HPILibPath[0]) { 43 strncpy(buf, HPILibPath, JVM_MAXPATHLEN - 1); 44 buf[JVM_MAXPATHLEN - 1] = '\0'; 45 } else { 46 const char *thread_type = "native_threads"; 47 48 os::jvm_path(buf, JVM_MAXPATHLEN); 49 50 #ifdef PRODUCT 51 const char * hpi_lib = "/libhpi.so"; 52 #else 53 char * ptr = strrchr(buf, '/'); 54 assert(strstr(ptr, "/libjvm") == ptr, "invalid library name"); 55 const char * hpi_lib = strstr(ptr, "_g") ? "/libhpi_g.so" : "/libhpi.so"; 56 #endif 57 58 *(strrchr(buf, '/')) = '\0'; /* get rid of /libjvm.so */ 59 char* p = strrchr(buf, '/'); 60 if (p != NULL) p[1] = '\0'; /* get rid of hotspot */ 61 strcat(buf, thread_type); 62 strcat(buf, hpi_lib); 63 } 64 /* we use RTLD_NOW because of bug 4032715 */ 65 if (TraceHPI) tty->print_cr("Loading HPI %s ", buf); 66 hpi_handle = dlopen(buf, RTLD_NOW); 67 if (hpi_handle == NULL) { 68 if (TraceHPI) tty->print_cr("HPI dlopen failed: %s", dlerror()); 69 return; 70 } 71 DLL_Initialize = CAST_TO_FN_PTR(jint (JNICALL *)(GetInterfaceFunc *, void *), 72 dlsym(hpi_handle, "DLL_Initialize")); 73 if (TraceHPI && DLL_Initialize == NULL) tty->print_cr("HPI dlsym of DLL_Initialize failed: %s", dlerror()); 74 if (DLL_Initialize == NULL || 75 (*DLL_Initialize)(&getintf, callbacks) < 0) { 76 if (TraceHPI) tty->print_cr("HPI DLL_Initialize failed"); 77 return; 78 } 79 if (TraceHPI) tty->print_cr("HPI loaded successfully"); 80 }