src/native/vm/gnu/java_lang_VMThrowable.c

   1 /* src/native/vm/gnu/java_lang_VMThrowable.c
   2
   3    Copyright (C) 1996-2005, 2006, 2007, 2008
   4    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
   5
   6    This file is part of CACAO.
   7
   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.
  12
  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.
  17
  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
  21    02110-1301, USA.
  22
  23 */
  24
  25
  26 #include "config.h"
  27
  28 #include <assert.h>
  29
  30 #include "vm/types.h"
  31
  32 #include "native/jni.h"
  33 #include "native/llni.h"
  34 #include "native/native.h"
  35
  36 #include "native/include/gnu_classpath_Pointer.h"
  37 #include "native/include/java_lang_Class.h"
  38 #include "native/include/java_lang_StackTraceElement.h"
  39 #include "native/include/java_lang_Throwable.h"
  40
  41 #include "native/include/java_lang_VMThrowable.h"
  42
  43 #include "native/vm/java_lang_Class.h"
  44
  45 #include "vm/array.h"
  46 #include "vm/builtin.h"
  47 #include "vm/exceptions.h"
  48 #include "vm/stringlocal.h"
  49
  50 #include "vm/jit/code.h"
  51 #include "vm/jit/linenumbertable.h"
  52 #include "vm/jit/stacktrace.h"
  53
  54 #include "vmcore/class.h"
  55 #include "vmcore/loader.h"
  56
  57
  58 /* native methods implemented by this file ************************************/
  59
  60 static JNINativeMethod methods[] = {
  61         { "fillInStackTrace", "(Ljava/lang/Throwable;)Ljava/lang/VMThrowable;",        (void *) (ptrint) &Java_java_lang_VMThrowable_fillInStackTrace },
  62         { "getStackTrace",    "(Ljava/lang/Throwable;)[Ljava/lang/StackTraceElement;", (void *) (ptrint) &Java_java_lang_VMThrowable_getStackTrace    },
  63 };
  64
  65
  66 /* _Jv_java_lang_VMThrowable_init **********************************************
  67
  68    Register native functions.
  69
  70 *******************************************************************************/
  71
  72 void _Jv_java_lang_VMThrowable_init(void)
  73 {
  74         utf *u;
  75
  76         u = utf_new_char("java/lang/VMThrowable");
  77
  78         native_method_register(u, methods, NATIVE_METHODS_COUNT);
  79 }
  80
  81
  82 /*
  83  * Class:     java/lang/VMThrowable
  84  * Method:    fillInStackTrace
  85  * Signature: (Ljava/lang/Throwable;)Ljava/lang/VMThrowable;
  86  */
  87 JNIEXPORT java_lang_VMThrowable* JNICALL Java_java_lang_VMThrowable_fillInStackTrace(JNIEnv *env, jclass clazz, java_lang_Throwable *t)
  88 {
  89         java_lang_VMThrowable   *o;
  90         java_handle_bytearray_t *ba;
  91
  92         o = (java_lang_VMThrowable *)
  93                 native_new_and_init(class_java_lang_VMThrowable);
  94
  95         if (o == NULL)
  96                 return NULL;
  97
  98         ba = stacktrace_get_current();
  99
 100         if (ba == NULL)
 101                 return NULL;
 102
 103         LLNI_field_set_ref(o, vmData, (gnu_classpath_Pointer *) ba);
 104
 105         return o;
 106 }
 107
 108
 109 /*
 110  * Class:     java/lang/VMThrowable
 111  * Method:    getStackTrace
 112  * Signature: (Ljava/lang/Throwable;)[Ljava/lang/StackTraceElement;
 113  */
 114 JNIEXPORT java_handle_objectarray_t* JNICALL Java_java_lang_VMThrowable_getStackTrace(JNIEnv *env, java_lang_VMThrowable *this, java_lang_Throwable *t)
 115 {
 116         java_handle_bytearray_t     *ba;
 117         stacktrace_t                *st;
 118         stacktrace_entry_t          *ste;
 119         java_handle_objectarray_t   *oa;
 120         java_lang_StackTraceElement *o;
 121         codeinfo                    *code;
 122         methodinfo                  *m;
 123         java_lang_String            *filename;
 124         s4                           linenumber;
 125         java_lang_String            *declaringclass;
 126         int                          i;
 127
 128         /* get the stacktrace buffer from the VMThrowable object */
 129
 130         LLNI_field_get_ref(this, vmData, ba);
 131
 132         st = (stacktrace_t *) LLNI_array_data(ba);
 133
 134         assert(st != NULL);
 135
 136         ste = st->entries;
 137
 138         /* Create the stacktrace element array. */
 139
 140         oa = builtin_anewarray(st->length, class_java_lang_StackTraceElement);
 141
 142         if (oa == NULL)
 143                 return NULL;
 144
 145         for (i = 0; i < st->length; i++, ste++) {
 146                 /* allocate a new stacktrace element */
 147
 148                 o = (java_lang_StackTraceElement *)
 149                         builtin_new(class_java_lang_StackTraceElement);
 150
 151                 if (o == NULL)
 152                         return NULL;
 153
 154                 /* Get the codeinfo and methodinfo. */
 155
 156                 code = ste->code;
 157                 m    = code->m;
 158
 159                 /* Get filename. */
 160
 161                 if (!(m->flags & ACC_NATIVE)) {
 162                         if (m->class->sourcefile)
 163                                 filename = (java_lang_String *) javastring_new(m->class->sourcefile);
 164                         else
 165                                 filename = NULL;
 166                 }
 167                 else
 168                         filename = NULL;
 169
 170                 /* get line number */
 171
 172                 if (m->flags & ACC_NATIVE) {
 173                         linenumber = -1;
 174                 }
 175                 else {
 176                         /* FIXME The linenumbertable_linenumber_for_pc could
 177                            change the methodinfo pointer when hitting an inlined
 178                            method. */
 179
 180                         linenumber = linenumbertable_linenumber_for_pc(&m, code, ste->pc);
 181                         linenumber = (linenumber == 0) ? -1 : linenumber;
 182                 }
 183
 184                 /* get declaring class name */
 185
 186                 declaringclass =
 187                         _Jv_java_lang_Class_getName(LLNI_classinfo_wrap(m->class));
 188
 189                 /* Fill the java.lang.StackTraceElement object. */
 190
 191                 LLNI_field_set_ref(o, fileName      , filename);
 192                 LLNI_field_set_val(o, lineNumber    , linenumber);
 193                 LLNI_field_set_ref(o, declaringClass, declaringclass);
 194                 LLNI_field_set_ref(o, methodName    , (java_lang_String *) javastring_new(m->name));
 195                 LLNI_field_set_val(o, isNative      , (m->flags & ACC_NATIVE) ? 1 : 0);
 196
 197                 array_objectarray_element_set(oa, i, (java_handle_t *) o);
 198         }
 199
 200         return oa;
 201 }
 202
 203
 204 /*
 205  * These are local overrides for various environment variables in Emacs.
 206  * Please do not remove this and leave it at the end of the file, where
 207  * Emacs will automagically detect them.
 208  * ---------------------------------------------------------------------
 209  * Local variables:
 210  * mode: c
 211  * indent-tabs-mode: t
 212  * c-basic-offset: 4
 213  * tab-width: 4
 214  * End:
 215  */