175 return dest;
176 }
177
178 char* Method::name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature, char* buf, int size) {
179 Symbol* klass_name = klass->name();
180 klass_name->as_klass_external_name(buf, size);
181 int len = (int)strlen(buf);
182
183 if (len < size - 1) {
184 buf[len++] = '.';
185
186 method_name->as_C_string(&(buf[len]), size - len);
187 len = (int)strlen(buf);
188
189 signature->as_C_string(&(buf[len]), size - len);
190 }
191
192 return buf;
193 }
194
195 int Method::fast_exception_handler_bci_for(KlassHandle ex_klass, int throw_bci, TRAPS) {
196 // exception table holds quadruple entries of the form (beg_bci, end_bci, handler_bci, klass_index)
197 // access exception table
198 ExceptionTable table(this);
199 int length = table.length();
200 // iterate through all entries sequentially
201 constantPoolHandle pool(THREAD, constants());
202 for (int i = 0; i < length; i ++) {
203 //reacquire the table in case a GC happened
204 ExceptionTable table(this);
205 int beg_bci = table.start_pc(i);
206 int end_bci = table.end_pc(i);
207 assert(beg_bci <= end_bci, "inconsistent exception table");
208 if (beg_bci <= throw_bci && throw_bci < end_bci) {
209 // exception handler bci range covers throw_bci => investigate further
210 int handler_bci = table.handler_pc(i);
211 int klass_index = table.catch_type_index(i);
212 if (klass_index == 0) {
213 return handler_bci;
214 } else if (ex_klass.is_null()) {
215 return handler_bci;
216 } else {
217 // we know the exception class => get the constraint class
218 // this may require loading of the constraint class; if verification
219 // fails or some other exception occurs, return handler_bci
220 Klass* k = pool->klass_at(klass_index, CHECK_(handler_bci));
221 KlassHandle klass = KlassHandle(THREAD, k);
222 assert(klass.not_null(), "klass not loaded");
223 if (ex_klass->is_subtype_of(klass())) {
224 return handler_bci;
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175 return dest;
176 }
177
178 char* Method::name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature, char* buf, int size) {
179 Symbol* klass_name = klass->name();
180 klass_name->as_klass_external_name(buf, size);
181 int len = (int)strlen(buf);
182
183 if (len < size - 1) {
184 buf[len++] = '.';
185
186 method_name->as_C_string(&(buf[len]), size - len);
187 len = (int)strlen(buf);
188
189 signature->as_C_string(&(buf[len]), size - len);
190 }
191
192 return buf;
193 }
194
195 int Method::fast_exception_handler_bci_for(methodHandle mh, KlassHandle ex_klass, int throw_bci, TRAPS) {
196 // exception table holds quadruple entries of the form (beg_bci, end_bci, handler_bci, klass_index)
197 // access exception table
198 ExceptionTable table(mh());
199 int length = table.length();
200 // iterate through all entries sequentially
201 constantPoolHandle pool(THREAD, mh->constants());
202 for (int i = 0; i < length; i ++) {
203 //reacquire the table in case a GC happened
204 ExceptionTable table(mh());
205 int beg_bci = table.start_pc(i);
206 int end_bci = table.end_pc(i);
207 assert(beg_bci <= end_bci, "inconsistent exception table");
208 if (beg_bci <= throw_bci && throw_bci < end_bci) {
209 // exception handler bci range covers throw_bci => investigate further
210 int handler_bci = table.handler_pc(i);
211 int klass_index = table.catch_type_index(i);
212 if (klass_index == 0) {
213 return handler_bci;
214 } else if (ex_klass.is_null()) {
215 return handler_bci;
216 } else {
217 // we know the exception class => get the constraint class
218 // this may require loading of the constraint class; if verification
219 // fails or some other exception occurs, return handler_bci
220 Klass* k = pool->klass_at(klass_index, CHECK_(handler_bci));
221 KlassHandle klass = KlassHandle(THREAD, k);
222 assert(klass.not_null(), "klass not loaded");
223 if (ex_klass->is_subtype_of(klass())) {
224 return handler_bci;
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