Mercurial > hg > truffle

comparison src/share/vm/prims/jvm.cpp @ 657:715dceaa89b7

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
6603316: Improve instrumentation for classes loaded at startup Reviewed-by: xlu, mchung
author acorn
date Wed, 25 Mar 2009 13:09:28 -0400
parents 0fbdb4381b99
children d3676b4cb78c
comparison
equal deleted inserted replaced
655:60bfce711da4 657:715dceaa89b7
62 62
63 static void trace_class_resolution_impl(klassOop to_class, TRAPS) { 63 static void trace_class_resolution_impl(klassOop to_class, TRAPS) {
64 ResourceMark rm; 64 ResourceMark rm;
65 int line_number = -1; 65 int line_number = -1;
66 const char * source_file = NULL; 66 const char * source_file = NULL;
67 const char * trace = "explicit";
67 klassOop caller = NULL; 68 klassOop caller = NULL;
68 JavaThread* jthread = JavaThread::current(); 69 JavaThread* jthread = JavaThread::current();
69 if (jthread->has_last_Java_frame()) { 70 if (jthread->has_last_Java_frame()) {
70 vframeStream vfst(jthread); 71 vframeStream vfst(jthread);
71 72
105 instanceKlass::cast(last_caller->method_holder())->name() == 106 instanceKlass::cast(last_caller->method_holder())->name() ==
106 vmSymbols::java_lang_ClassLoader() && 107 vmSymbols::java_lang_ClassLoader() &&
107 (last_caller->name() == vmSymbols::loadClassInternal_name() || 108 (last_caller->name() == vmSymbols::loadClassInternal_name() ||
108 last_caller->name() == vmSymbols::loadClass_name())) { 109 last_caller->name() == vmSymbols::loadClass_name())) {
109 found_it = true; 110 found_it = true;
111 } else if (!vfst.at_end()) {
112 if (vfst.method()->is_native()) {
113 // JNI call
114 found_it = true;
115 }
110 } 116 }
111 if (found_it && !vfst.at_end()) { 117 if (found_it && !vfst.at_end()) {
112 // found the caller 118 // found the caller
113 caller = vfst.method()->method_holder(); 119 caller = vfst.method()->method_holder();
114 line_number = vfst.method()->line_number_from_bci(vfst.bci()); 120 line_number = vfst.method()->line_number_from_bci(vfst.bci());
115 symbolOop s = instanceKlass::cast(vfst.method()->method_holder())->source_file_name(); 121 if (line_number == -1) {
122 // show method name if it's a native method
123 trace = vfst.method()->name_and_sig_as_C_string();
124 }
125 symbolOop s = instanceKlass::cast(caller)->source_file_name();
116 if (s != NULL) { 126 if (s != NULL) {
117 source_file = s->as_C_string(); 127 source_file = s->as_C_string();
118 } 128 }
119 } 129 }
120 } 130 }
122 if (to_class != caller) { 132 if (to_class != caller) {
123 const char * from = Klass::cast(caller)->external_name(); 133 const char * from = Klass::cast(caller)->external_name();
124 const char * to = Klass::cast(to_class)->external_name(); 134 const char * to = Klass::cast(to_class)->external_name();
125 // print in a single call to reduce interleaving between threads 135 // print in a single call to reduce interleaving between threads
126 if (source_file != NULL) { 136 if (source_file != NULL) {
127 tty->print("RESOLVE %s %s %s:%d (explicit)\n", from, to, source_file, line_number); 137 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace);
128 } else { 138 } else {
129 tty->print("RESOLVE %s %s (explicit)\n", from, to); 139 tty->print("RESOLVE %s %s (%s)\n", from, to, trace);
130 } 140 }
131 } 141 }
132 } 142 }
133 } 143 }
134 144
135 static void trace_class_resolution(klassOop to_class) { 145 void trace_class_resolution(klassOop to_class) {
136 EXCEPTION_MARK; 146 EXCEPTION_MARK;
137 trace_class_resolution_impl(to_class, THREAD); 147 trace_class_resolution_impl(to_class, THREAD);
138 if (HAS_PENDING_EXCEPTION) { 148 if (HAS_PENDING_EXCEPTION) {
139 CLEAR_PENDING_EXCEPTION; 149 CLEAR_PENDING_EXCEPTION;
140 } 150 }
3211 loader = instanceKlass::cast(curr_klass_oop)->class_loader(); 3221 loader = instanceKlass::cast(curr_klass_oop)->class_loader();
3212 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); 3222 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain();
3213 } 3223 }
3214 Handle h_loader(THREAD, loader); 3224 Handle h_loader(THREAD, loader);
3215 Handle h_prot (THREAD, protection_domain); 3225 Handle h_prot (THREAD, protection_domain);
3216 return find_class_from_class_loader(env, name, true, h_loader, h_prot, 3226 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot,
3217 false, thread); 3227 false, thread);
3228 if (TraceClassResolution && result != NULL) {
3229 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result)));
3230 }
3231 return result;
3218 JVM_END 3232 JVM_END
3219 3233
3220 3234
3221 // Array /////////////////////////////////////////////////////////////////////////////////////////// 3235 // Array ///////////////////////////////////////////////////////////////////////////////////////////
3222 3236