1 /* src/cacao/cacao.c - contains main() of cacao
3 Copyright (C) 1996-2005, 2006, 2007, 2008
4 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
6 This file is part of CACAO.
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2, or (at
11 your option) any later version.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
30 #if defined(ENABLE_JRE_LAYOUT)
41 #include "native/jni.h"
42 #include "native/native.h"
44 #if defined(ENABLE_JVMTI)
45 # include "native/jvmti/jvmti.h"
46 # include "native/jvmti/cacaodbg.h"
47 # include "threads/mutex.h"
50 #include "vmcore/system.h"
55 /* Defines. *******************************************************************/
57 #define LIBJVM_NAME NATIVE_LIBRARY_PREFIX"jvm"NATIVE_LIBRARY_SUFFIX
60 /* forward declarations *******************************************************/
62 static JavaVMInitArgs *cacao_options_prepare(int argc, char **argv);
65 /* main ************************************************************************
69 *******************************************************************************/
71 int main(int argc, char **argv)
73 #if defined(ENABLE_LIBJVM)
76 # if defined(ENABLE_JRE_LAYOUT)
81 #if defined(ENABLE_LIBJVM)
82 /* Variables for JNI_CreateJavaVM dlopen call. */
84 void* libjvm_vm_createjvm;
88 bool (*vm_createjvm)(JavaVM **, void **, void *);
89 void (*vm_run)(JavaVM *, JavaVMInitArgs *);
92 JavaVM *vm; /* denotes a Java VM */
94 JavaVMInitArgs *vm_args;
96 /* prepare the options */
98 vm_args = cacao_options_prepare(argc, argv);
100 /* load and initialize a Java VM, return a JNI interface pointer in env */
102 #if defined(ENABLE_LIBJVM)
103 # if defined(ENABLE_JRE_LAYOUT)
104 /* SUN also uses a buffer of 4096-bytes (strace is your friend). */
106 path = malloc(sizeof(char) * 4096);
108 if (readlink("/proc/self/exe", path, 4095) == -1) {
109 fprintf(stderr, "main: readlink failed: %s\n", strerror(errno));
113 /* get the path of the current executable */
115 path = dirname(path);
116 len = strlen(path) + strlen("/../lib/"LIBJVM_NAME) + strlen("0");
119 fprintf(stderr, "main: libjvm name to long for buffer\n");
123 /* concatinate the library name */
125 strcat(path, "/../lib/"LIBJVM_NAME);
127 path = CACAO_LIBDIR"/"LIBJVM_NAME;
130 /* First try to open where dlopen searches, e.g. LD_LIBRARY_PATH.
131 If not found, try the absolute path. */
133 libjvm_handle = system_dlopen(LIBJVM_NAME, RTLD_LAZY);
135 if (libjvm_handle == NULL) {
136 /* save the error message */
138 lterror = strdup(system_dlerror());
140 libjvm_handle = system_dlopen(path, RTLD_LAZY);
142 if (libjvm_handle == NULL) {
143 /* print the first error message too */
145 fprintf(stderr, "main: system_dlopen failed: %s\n", lterror);
147 /* and now the current one */
149 fprintf(stderr, "main: system_dlopen failed: %s\n",
154 /* free the error string */
156 free((void *) lterror);
159 libjvm_vm_createjvm = system_dlsym(libjvm_handle, "vm_createjvm");
161 if (libjvm_vm_createjvm == NULL) {
162 fprintf(stderr, "main: lt_dlsym failed: %s\n", system_dlerror());
167 (bool (*)(JavaVM **, void **, void *)) (ptrint) libjvm_vm_createjvm;
170 /* create the Java VM */
172 (void) vm_createjvm(&vm, (void *) &env, vm_args);
174 #if defined(ENABLE_JVMTI)
175 mutex_init(&dbgcomlock);
176 if (jvmti) jvmti_set_phase(JVMTI_PHASE_START);
179 #if defined(ENABLE_LIBJVM)
180 libjvm_vm_run = system_dlsym(libjvm_handle, "vm_run");
182 if (libjvm_vm_run == NULL) {
183 fprintf(stderr, "main: system_dlsym failed: %s\n", system_dlerror());
187 vm_run = (void (*)(JavaVM *, JavaVMInitArgs *)) (ptrint) libjvm_vm_run;
194 /* keep compiler happy */
200 /* cacao_options_prepare *******************************************************
202 Prepare the JavaVMInitArgs.
204 *******************************************************************************/
206 static JavaVMInitArgs *cacao_options_prepare(int argc, char **argv)
208 JavaVMInitArgs *vm_args;
211 vm_args = malloc(sizeof(JavaVMInitArgs));
213 vm_args->version = JNI_VERSION_1_2;
214 vm_args->nOptions = argc - 1;
215 vm_args->options = malloc(sizeof(JavaVMOption) * argc);
216 vm_args->ignoreUnrecognized = JNI_FALSE;
218 for (i = 1; i < argc; i++)
219 vm_args->options[i - 1].optionString = argv[i];
226 * These are local overrides for various environment variables in Emacs.
227 * Please do not remove this and leave it at the end of the file, where
228 * Emacs will automagically detect them.
229 * ---------------------------------------------------------------------
232 * indent-tabs-mode: t