1 /* 2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "trace/traceStream.hpp" 27 #if INCLUDE_TRACE 28 #include "classfile/classLoaderData.hpp" 29 #include "classfile/javaClasses.hpp" 30 #include "memory/resourceArea.hpp" 31 #include "oops/klass.hpp" 32 #include "oops/method.hpp" 33 #include "oops/symbol.hpp" 34 35 void TraceStream::print_val(const char* label, const Klass* val) const { 36 ResourceMark rm; 37 const char* description = "NULL"; 38 if (val != NULL) { 39 const Symbol* name = val->name(); 40 if (name != NULL) { 41 description = name->as_C_string(); 42 } 43 } 44 tty->print("%s = %s", label, description); 45 } 46 47 void TraceStream::print_val(const char* label, const Method* val) const { 48 ResourceMark rm; 49 const char* description = "NULL"; 50 if (val != NULL) { 51 description = val->name_and_sig_as_C_string(); 52 } 53 tty->print("%s = %s", label, description); 54 } 55 56 void TraceStream::print_val(const char* label, const ClassLoaderData* cld) const { 57 /* guangyu.zgy not implemented yet 58 ResourceMark rm; 59 if (cld == NULL || cld->is_anonymous()) { 60 tty->print("%s = NULL", label); 61 return; 62 } 63 const char* class_loader_name = "NULL"; 64 const char* class_loader_type_name = "NULL"; 65 const oop class_loader_oop = cld->class_loader(); 66 67 if (class_loader_oop != NULL) { 68 const Klass* k = class_loader_oop->klass(); 69 assert(k != NULL, "invariant"); 70 const Symbol* klass_name_sym = k->name(); 71 if (klass_name_sym != NULL) { 72 class_loader_type_name = klass_name_sym->as_C_string(); 73 } 74 const oop class_loader_name_oop = 75 java_lang_ClassLoader::name(class_loader_oop); 76 if (class_loader_name_oop != NULL) { 77 const char* class_loader_name_from_oop = 78 java_lang_String::as_utf8_string(class_loader_name_oop); 79 if (class_loader_name_from_oop != NULL && 80 class_loader_name_from_oop[0] != '\0') { 81 class_loader_name = class_loader_name_from_oop; 82 } 83 } 84 } else { 85 assert(class_loader_oop == NULL, "invariant"); 86 // anonymous CLDs are excluded, this would be the boot loader 87 class_loader_name = "boot"; 88 } 89 tty->print("%s = name=%s class=%s", label, class_loader_name, class_loader_type_name); 90 */ 91 } 92 93 #endif // INCLUDE_TRACE