96 //
97 // Returns the number of frames whose information was transferred into the buffers.
98 //
99 int StackWalk::fill_in_frames(jlong mode, JavaFrameStream& stream,
100 int max_nframes, int start_index,
101 objArrayHandle frames_array,
102 int& end_index, TRAPS) {
103 if (TraceStackWalk) {
104 tty->print_cr("fill_in_frames limit=%d start=%d frames length=%d",
105 max_nframes, start_index, frames_array->length());
106 }
107 assert(max_nframes > 0, "invalid max_nframes");
108 assert(start_index + max_nframes <= frames_array->length(), "oob");
109
110 int frames_decoded = 0;
111 for (; !stream.at_end(); stream.next()) {
112 Method* method = stream.method();
113 int bci = stream.bci();
114
115 if (method == NULL) continue;
116 if (!ShowHiddenFrames && StackWalk::skip_hidden_frames(mode)) {
117 if (method->is_hidden()) {
118 if (TraceStackWalk) {
119 tty->print(" hidden method: "); method->print_short_name();
120 tty->print("\n");
121 }
122 continue;
123 }
124 }
125
126 int index = end_index++;
127 if (TraceStackWalk) {
128 tty->print(" %d: frame method: ", index); method->print_short_name();
129 tty->print_cr(" bci=%d", bci);
130 }
131
132 // fill in StackFrameInfo and initialize MemberName
133 if (live_frame_info(mode)) {
134 assert (use_frames_array(mode), "Bad mode for get live frame");
135 Handle stackFrame(frames_array->obj_at(index));
136 fill_live_stackframe(stackFrame, method, bci, stream.java_frame(), CHECK_0);
137 } else if (need_method_info(mode)) {
138 assert (use_frames_array(mode), "Bad mode for get stack frame");
139 Handle stackFrame(frames_array->obj_at(index));
140 fill_stackframe(stackFrame, method, bci);
141 } else {
142 assert (use_frames_array(mode) == false, "Bad mode for get caller class");
143 frames_array->obj_at_put(index, method->method_holder()->java_mirror());
144 }
145 if (++frames_decoded >= max_nframes) break;
146 }
147 return frames_decoded;
148 }
149
150 static oop create_primitive_value_instance(StackValueCollection* values, int i, TRAPS) {
151 Klass* k = SystemDictionary::resolve_or_null(vmSymbols::java_lang_LiveStackFrameInfo(), CHECK_NULL);
152 instanceKlassHandle ik (THREAD, k);
153
154 JavaValue result(T_OBJECT);
155 JavaCallArguments args;
156 Symbol* signature = NULL;
157
158 // ## TODO: type is only available in LocalVariable table, if present.
159 // ## StackValue type is T_INT or T_OBJECT.
160 switch (values->at(i)->type()) {
161 case T_INT:
162 args.push_int(values->int_at(i));
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96 //
97 // Returns the number of frames whose information was transferred into the buffers.
98 //
99 int StackWalk::fill_in_frames(jlong mode, JavaFrameStream& stream,
100 int max_nframes, int start_index,
101 objArrayHandle frames_array,
102 int& end_index, TRAPS) {
103 if (TraceStackWalk) {
104 tty->print_cr("fill_in_frames limit=%d start=%d frames length=%d",
105 max_nframes, start_index, frames_array->length());
106 }
107 assert(max_nframes > 0, "invalid max_nframes");
108 assert(start_index + max_nframes <= frames_array->length(), "oob");
109
110 int frames_decoded = 0;
111 for (; !stream.at_end(); stream.next()) {
112 Method* method = stream.method();
113 int bci = stream.bci();
114
115 if (method == NULL) continue;
116
117 // skip hidden frames for default StackWalker option (i.e. SHOW_HIDDEN_FRAMES
118 // not set) and when StackWalker::getCallerClass is called
119 if (!ShowHiddenFrames && (skip_hidden_frames(mode) || get_caller_class(mode))) {
120 if (method->is_hidden()) {
121 if (TraceStackWalk) {
122 tty->print(" hidden method: "); method->print_short_name();
123 tty->print("\n");
124 }
125 continue;
126 }
127 }
128
129 int index = end_index++;
130 if (TraceStackWalk) {
131 tty->print(" %d: frame method: ", index); method->print_short_name();
132 tty->print_cr(" bci=%d", bci);
133 }
134
135 // fill in StackFrameInfo and initialize MemberName
136 if (live_frame_info(mode)) {
137 assert (use_frames_array(mode), "Bad mode for get live frame");
138 Handle stackFrame(frames_array->obj_at(index));
139 fill_live_stackframe(stackFrame, method, bci, stream.java_frame(), CHECK_0);
140 } else if (need_method_info(mode)) {
141 assert (use_frames_array(mode), "Bad mode for get stack frame");
142 Handle stackFrame(frames_array->obj_at(index));
143 fill_stackframe(stackFrame, method, bci);
144 } else {
145 assert (get_caller_class(mode) == true, "Bad mode for get caller class");
146 if (index == start_index && method->caller_sensitive()) {
147 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(),
148 err_msg("StackWalker::getCallerClass called from @CallerSensitive %s method",
149 method->name_and_sig_as_C_string()));
150 }
151
152 frames_array->obj_at_put(index, method->method_holder()->java_mirror());
153 }
154 if (++frames_decoded >= max_nframes) break;
155 }
156 return frames_decoded;
157 }
158
159 static oop create_primitive_value_instance(StackValueCollection* values, int i, TRAPS) {
160 Klass* k = SystemDictionary::resolve_or_null(vmSymbols::java_lang_LiveStackFrameInfo(), CHECK_NULL);
161 instanceKlassHandle ik (THREAD, k);
162
163 JavaValue result(T_OBJECT);
164 JavaCallArguments args;
165 Symbol* signature = NULL;
166
167 // ## TODO: type is only available in LocalVariable table, if present.
168 // ## StackValue type is T_INT or T_OBJECT.
169 switch (values->at(i)->type()) {
170 case T_INT:
171 args.push_int(values->int_at(i));
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