src/native/vm/VMThrowable.c

   1 /* native/vm/VMThrowable.c - java/lang/VMThrowable
   2
   3    Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
   4    R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser,
   5    M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck,
   6    P. Tomsich, J. Wenninger
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  23    02111-1307, USA.
  24
  25    Contact: cacao@complang.tuwien.ac.at
  26
  27    Authors: Joseph Wenninger
  28
  29    $Id: VMThrowable.c 1621 2004-11-30 13:06:55Z twisti $
  30
  31 */
  32
  33
  34 #include "native/jni.h"
  35 #include "native/native.h"
  36 #include "native/include/java_lang_Class.h"
  37 #include "native/include/java_lang_Throwable.h"
  38 #include "native/include/java_lang_VMClass.h"
  39 #include "native/include/java_lang_VMThrowable.h"
  40 #include "vm/builtin.h"
  41 #include "vm/loader.h"
  42 #include "vm/tables.h"
  43 #include "vm/jit/asmpart.h"
  44
  45
  46 /*
  47  * Class:     java/lang/VMThrowable
  48  * Method:    fillInStackTrace
  49  * Signature: (Ljava/lang/Throwable;)Ljava/lang/VMThrowable;
  50  */
  51 JNIEXPORT java_lang_VMThrowable* JNICALL Java_java_lang_VMThrowable_fillInStackTrace(JNIEnv *env, jclass clazz, java_lang_Throwable *par1)
  52 {
  53         classinfo *class_java_lang_VMThrowable = NULL;
  54         java_lang_VMThrowable *vmthrow;
  55
  56         if (!class_java_lang_VMThrowable)
  57                 class_java_lang_VMThrowable = class_new(utf_new_char("java/lang/VMThrowable"));
  58
  59         if (class_java_lang_VMThrowable == NULL)
  60                 panic("Needed class java.lang.VMThrowable missing");
  61
  62         vmthrow = (java_lang_VMThrowable *) native_new_and_init(class_java_lang_VMThrowable);
  63
  64         if (vmthrow == NULL)
  65                 panic("Needed instance of class  java.lang.VMThrowable could not be created");
  66
  67 #if defined(__I386__)
  68         (void) asm_get_stackTrace(&(vmthrow->vmData));
  69 #else
  70         vmthrow->vmData=0;
  71 #endif
  72
  73         return vmthrow;
  74 }
  75
  76
  77
  78 java_objectarray* generateStackTraceArray(JNIEnv *env,stacktraceelement *source,long pos,long size)
  79 {
  80         long resultPos;
  81         methodinfo *m;
  82         classinfo *c;
  83         java_objectarray *oa;
  84
  85         c = class_new(utf_new_char("java/lang/StackTraceElement"));
  86
  87         if (!c->loaded)
  88                 class_load(c);
  89
  90         if (!c->linked)
  91                 class_link(c);
  92
  93         m = class_findmethod(c,
  94                                                  utf_new_char("<init>"),
  95                                                  utf_new_char("(Ljava/lang/String;ILjava/lang/String;Ljava/lang/String;Z)V"));
  96
  97         if (!m)
  98                 panic("java.lang.StackTraceElement misses needed constructor");
  99
 100         oa = builtin_anewarray(size, c);
 101
 102         if (!oa)
 103                 return 0;
 104
 105 /*      printf("Should return an array with %ld element(s)\n",size);*/
 106         pos--;
 107
 108
 109         for(resultPos=0;pos>=0;resultPos++,pos--) {
 110                 java_objectheader *element;
 111
 112                 if (source[pos].method==0) {
 113                         resultPos--;
 114                         continue;
 115                 }
 116
 117                 element=builtin_new(c);
 118                 if (!element) {
 119                         panic("Memory for stack trace element could not be allocated");
 120                 }
 121 #ifdef __GNUC__
 122 #warning call constructor once jni is fixed to allow more than three parameters
 123 #endif
 124 #if 0
 125                 (*env)->CallVoidMethod(env,element,m,
 126                         javastring_new(source[pos].method->class->sourcefile),
 127                         source[size].linenumber,
 128                         javastring_new(source[pos].method->class->name),
 129                         javastring_new(source[pos].method->name),
 130                         source[pos].method->flags & ACC_NATIVE);
 131 #else
 132                 if (!(source[pos].method->flags & ACC_NATIVE))setfield_critical(c,element,"fileName",
 133                 "Ljava/lang/String;",  jobject,
 134                 (jobject) javastring_new(source[pos].method->class->sourcefile));
 135 /*              setfield_critical(c,element,"className",          "Ljava/lang/String;",  jobject,  */
 136 /*              (jobject) javastring_new(source[pos].method->class->name)); */
 137                 setfield_critical(c,element,"declaringClass",      "Ljava/lang/String;",  jobject,
 138                 (jobject) Java_java_lang_VMClass_getName(env, NULL, (java_lang_Class *) source[pos].method->class));
 139                 setfield_critical(c,element,"methodName",          "Ljava/lang/String;",  jobject,
 140                 (jobject) javastring_new(source[pos].method->name));
 141                 setfield_critical(c,element,"lineNumber",          "I",  jint,
 142                 (jint) ((source[pos].method->flags & ACC_NATIVE) ? -1:(source[pos].linenumber)));
 143                 setfield_critical(c,element,"isNative",          "Z",  jboolean,
 144                 (jboolean) ((source[pos].method->flags & ACC_NATIVE) ? 1:0));
 145
 146
 147 #endif
 148
 149                 oa->data[resultPos]=element;
 150         }
 151
 152         return oa;
 153
 154 }
 155
 156
 157 /*
 158  * Class:     java/lang/VMThrowable
 159  * Method:    getStackTrace
 160  * Signature: (Ljava/lang/Throwable;)[Ljava/lang/StackTraceElement;
 161  */
 162 JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMThrowable_getStackTrace(JNIEnv *env, java_lang_VMThrowable *this, java_lang_Throwable *par1)
 163 {
 164         long  pos;
 165         long  maxpos;
 166         long  sizediff;
 167         utf*  classname=par1->header.vftbl->class->name;
 168         utf*  init=utf_new_char("<init>");
 169         utf*  throwable=utf_new_char("java/lang/Throwable");
 170         stacktraceelement *el=(stacktraceelement*)this->vmData;
 171
 172         /*      log_text("Java_java_lang_VMThrowable_getStackTrace");
 173         utf_display(par1->header.vftbl->class->name);
 174         printf("\n----------------------------------------------\n");*/
 175
 176         sizediff=0;
 177         if (el == 0) {
 178                 return generateStackTraceArray(env, el, 0,0);
 179         }
 180
 181         for (pos = 0; !((el[pos].method == 0) && (el[pos].linenumber ==-1)); pos++) {
 182                 if (el[pos].method==0) sizediff++;
 183         }
 184
 185         if (pos == 0) {
 186                 panic("Stacktrace cannot have zero length");
 187         }
 188
 189         pos--;
 190         pos--;
 191         maxpos = pos;
 192         if (el[pos].method!=0) { /* if == 0 -> some builtin native */
 193                 if (el[pos].method->class->name == throwable && el[pos].method->name == init) {
 194                         for (; pos >= 0 && el[pos].method->name == init && el[pos].method->class->name != classname; pos--) {
 195 /*                              log_text("ignoring:");
 196                                 utf_display(el[pos].method->name);
 197                                 log_text("");
 198                                 utf_display(el[pos].method->class->name);
 199                                 log_text("");*/
 200
 201                         };
 202                         pos--;
 203                         if (pos < 0) {
 204                                 log_text("Invalid stack trace for Throwable.getStackTrace()");
 205
 206                         }
 207                 }
 208         }
 209
 210         /* build the result array*/
 211         pos++; /*arraysize*/
 212
 213         return generateStackTraceArray(env,el,pos,pos-sizediff);
 214 }
 215
 216
 217 /*
 218  * These are local overrides for various environment variables in Emacs.
 219  * Please do not remove this and leave it at the end of the file, where
 220  * Emacs will automagically detect them.
 221  * ---------------------------------------------------------------------
 222  * Local variables:
 223  * mode: c
 224  * indent-tabs-mode: t
 225  * c-basic-offset: 4
 226  * tab-width: 4
 227  * End:
 228  */