1 /*

     2 * Copyright (c) 2016, 2018, 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.inline.hpp"

    29 #include "classfile/javaClasses.inline.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   ResourceMark rm;

    58   if (cld == NULL || cld->is_anonymous()) {

    59     tty->print("%s = NULL", label);

    60     return;

    61   }

    62   const char* class_loader_name = "NULL";

    63   const char* class_loader_type_name = "NULL";

    64   const oop class_loader_oop = cld->class_loader();

    65 

    66   if (class_loader_oop != NULL) {

    67     const Klass* k = class_loader_oop->klass();

    68     assert(k != NULL, "invariant");

    69     const Symbol* klass_name_sym = k->name();

    70     if (klass_name_sym != NULL) {

    71       class_loader_type_name = klass_name_sym->as_C_string();

    72     }

    73     const oop class_loader_name_oop =

    74       java_lang_ClassLoader::name(class_loader_oop);

    75     if (class_loader_name_oop != NULL) {

    76       const char* class_loader_name_from_oop =

    77         java_lang_String::as_utf8_string(class_loader_name_oop);

    78       if (class_loader_name_from_oop != NULL &&

    79             class_loader_name_from_oop[0] != '\0') {

    80         class_loader_name = class_loader_name_from_oop;

    81       }

    82     }

    83   } else {

    84     assert(class_loader_oop == NULL, "invariant");

    85     // anonymous CLDs are excluded, this would be the boot loader

    86     class_loader_name = "boot";

    87   }

    88   tty->print("%s = name=%s class=%s", label, class_loader_name, class_loader_type_name);

    89 }

    90 

    91 #endif // INCLUDE_TRACE