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comparison src/os/windows/vm/hpi_windows.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1998-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 # include "incls/_precompiled.incl"
26 # include "incls/_hpi_windows.cpp.incl"
27
28 typedef jint (JNICALL *init_t)(GetInterfaceFunc *, void *);
29
30 void hpi::initialize_get_interface(vm_calls_t *callbacks)
31 {
32 // Build name of HPI.
33 char lib_name[JVM_MAXPATHLEN];
34
35 if (HPILibPath && HPILibPath[0]) {
36 strncpy(lib_name, HPILibPath, JVM_MAXPATHLEN - 1);
37 lib_name[JVM_MAXPATHLEN - 1] = '\0';
38 } else {
39 os::jvm_path(lib_name, sizeof lib_name);
40
41 #ifdef PRODUCT
42 const char *hpi_lib = "\\hpi.dll";
43 #else
44 char *ptr = strrchr(lib_name, '\\');
45 // On Win98 GetModuleFileName() returns the path in the upper case.
46 assert(_strnicmp(ptr, "\\jvm",4) == 0, "invalid library name");
47 const char *hpi_lib = (_strnicmp(ptr, "\\jvm_g",6) == 0) ? "\\hpi_g.dll" : "\\hpi.dll";
48 #endif
49
50 *(::strrchr(lib_name, '\\')) = '\0'; /* get rid of "\\jvm.dll" */
51 char *p = ::strrchr(lib_name, '\\');
52 if (p != NULL) *p = '\0'; /* get rid of "\\hotspot" */
53 strcat(lib_name, hpi_lib);
54 }
55
56 // Load it.
57 if (TraceHPI) tty->print_cr("Loading HPI %s ", lib_name);
58 HINSTANCE lib_handle = LoadLibrary(lib_name);
59 if (lib_handle == NULL) {
60 if (TraceHPI) tty->print_cr("LoadLibrary failed, code = %d", GetLastError());
61 return;
62 }
63
64 // Find hpi initializer.
65 init_t initer = (init_t)GetProcAddress(lib_handle, "DLL_Initialize");
66 if (initer == NULL) {
67 if (TraceHPI) tty->print_cr("GetProcAddress failed, errcode = %d", GetLastError());
68 return;
69 }
70
71 // Call initializer.
72 jint init_result = (*initer)(&_get_interface, callbacks);
73 if (init_result < 0) {
74 if (TraceHPI) tty->print_cr("DLL_Initialize failed, returned %ld", init_result);
75 return;
76 }
77
78 if (TraceHPI) tty->print_cr("success");
79 return;
80 }