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 typedef jint (JNICALL *init_t)(GetInterfaceFunc *, void *); 31 32 void hpi::initialize_get_interface(vm_calls_t *callbacks) 33 { 34 // Build name of HPI. 35 char lib_name[JVM_MAXPATHLEN]; 36 37 if (HPILibPath && HPILibPath[0]) { 38 strncpy(lib_name, HPILibPath, JVM_MAXPATHLEN - 1); 39 lib_name[JVM_MAXPATHLEN - 1] = '\0'; 40 } else { 41 os::jvm_path(lib_name, sizeof lib_name); 42 43 #ifdef PRODUCT 44 const char *hpi_lib = "\\hpi.dll"; 45 #else 46 char *ptr = strrchr(lib_name, '\\'); 47 // On Win98 GetModuleFileName() returns the path in the upper case. 48 assert(_strnicmp(ptr, "\\jvm",4) == 0, "invalid library name"); 49 const char *hpi_lib = (_strnicmp(ptr, "\\jvm_g",6) == 0) ? "\\hpi_g.dll" : "\\hpi.dll"; 50 #endif 51 52 *(::strrchr(lib_name, '\\')) = '\0'; /* get rid of "\\jvm.dll" */ 53 char *p = ::strrchr(lib_name, '\\'); 54 if (p != NULL) *p = '\0'; /* get rid of "\\hotspot" */ 55 strcat(lib_name, hpi_lib); 56 } 57 58 // Load it. 59 if (TraceHPI) tty->print_cr("Loading HPI %s ", lib_name); 60 HINSTANCE lib_handle = LoadLibrary(lib_name); 61 if (lib_handle == NULL) { 62 if (TraceHPI) tty->print_cr("LoadLibrary failed, code = %d", GetLastError()); 63 return; 64 } 65 66 // Find hpi initializer. 67 init_t initer = (init_t)GetProcAddress(lib_handle, "DLL_Initialize"); 68 if (initer == NULL) { 69 if (TraceHPI) tty->print_cr("GetProcAddress failed, errcode = %d", GetLastError()); 70 return; 71 } 72 73 // Call initializer. 74 jint init_result = (*initer)(&_get_interface, callbacks); 75 if (init_result < 0) { 76 if (TraceHPI) tty->print_cr("DLL_Initialize failed, returned %ld", init_result); 77 return; 78 } 79 80 if (TraceHPI) tty->print_cr("success"); 81 return; 82 }