1 /*
2 * Copyright (c) 2011, 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 "jni.h"
27 #include "classfile/javaClasses.inline.hpp"
28 #include "classfile/symbolTable.hpp"
29 #include "memory/oopFactory.hpp"
30 #include "memory/resourceArea.hpp"
31 #include "oops/objArrayOop.inline.hpp"
32 #include "prims/whitebox.inline.hpp"
33 #include "prims/wbtestmethods/parserTests.hpp"
34 #include "runtime/interfaceSupport.inline.hpp"
35 #include "runtime/jniHandles.inline.hpp"
36 #include "services/diagnosticArgument.hpp"
37 #include "services/diagnosticFramework.hpp"
38
39 //There's no way of beforeahnd knowing an upper size
40 //Of the length of a string representation of
41 //the value of an argument.
42 #define VALUE_MAXLEN 256
43
44 // DiagnosticFramework test utility methods
45
46 /*
47 * The DiagnosticArgumentType class contains an enum that says which type
48 * this argument represents. (JLONG, BOOLEAN etc).
49 * This method Returns a char* representation of that enum value.
50 */
51 static const char* lookup_diagnosticArgumentEnum(const char* field_name, oop object) {
52 Thread* THREAD = Thread::current();
53 const char* enum_sig = "Lsun/hotspot/parser/DiagnosticCommand$DiagnosticArgumentType;";
54 TempNewSymbol enumSigSymbol = SymbolTable::lookup(enum_sig, (int) strlen(enum_sig), THREAD);
55 int offset = WhiteBox::offset_for_field(field_name, object, enumSigSymbol);
56 oop enumOop = object->obj_field(offset);
57
58 const char* ret = WhiteBox::lookup_jstring("name", enumOop);
59 return ret;
60 }
61
62 /*
63 * Takes an oop to a DiagnosticArgumentType-instance and
64 * reads the fields from it. Fills an native DCmdParser with
65 * this info.
66 */
67 static void fill_in_parser(DCmdParser* parser, oop argument)
68 {
69 const char* name = WhiteBox::lookup_jstring("name", argument);
70 const char* desc = WhiteBox::lookup_jstring("desc", argument);
71 const char* default_value = WhiteBox::lookup_jstring("defaultValue", argument);
72 bool mandatory = WhiteBox::lookup_bool("mandatory", argument);
73 bool isarg = WhiteBox::lookup_bool("argument", argument);
74 const char* type = lookup_diagnosticArgumentEnum("type", argument);
75
76 if (strcmp(type, "STRING") == 0) {
77 DCmdArgument<char*>* argument = new DCmdArgument<char*>(
78 name, desc,
79 "STRING", mandatory, default_value);
80 if (isarg) {
81 parser->add_dcmd_argument(argument);
82 } else {
83 parser->add_dcmd_option(argument);
84 }
85 } else if (strcmp(type, "NANOTIME") == 0) {
86 DCmdArgument<NanoTimeArgument>* argument = new DCmdArgument<NanoTimeArgument>(
87 name, desc,
88 "NANOTIME", mandatory, default_value);
89 if (isarg) {
90 parser->add_dcmd_argument(argument);
91 } else {
92 parser->add_dcmd_option(argument);
93 }
94 } else if (strcmp(type, "JLONG") == 0) {
95 DCmdArgument<jlong>* argument = new DCmdArgument<jlong>(
96 name, desc,
97 "JLONG", mandatory, default_value);
98 if (isarg) {
99 parser->add_dcmd_argument(argument);
100 } else {
101 parser->add_dcmd_option(argument);
102 }
103 } else if (strcmp(type, "BOOLEAN") == 0) {
104 DCmdArgument<bool>* argument = new DCmdArgument<bool>(
105 name, desc,
106 "BOOLEAN", mandatory, default_value);
107 if (isarg) {
108 parser->add_dcmd_argument(argument);
109 } else {
110 parser->add_dcmd_option(argument);
111 }
112 } else if (strcmp(type, "MEMORYSIZE") == 0) {
113 DCmdArgument<MemorySizeArgument>* argument = new DCmdArgument<MemorySizeArgument>(
114 name, desc,
115 "MEMORY SIZE", mandatory, default_value);
116 if (isarg) {
117 parser->add_dcmd_argument(argument);
118 } else {
119 parser->add_dcmd_option(argument);
120 }
121 } else if (strcmp(type, "STRINGARRAY") == 0) {
122 DCmdArgument<StringArrayArgument*>* argument = new DCmdArgument<StringArrayArgument*>(
123 name, desc,
124 "STRING SET", mandatory);
125 if (isarg) {
126 parser->add_dcmd_argument(argument);
127 } else {
128 parser->add_dcmd_option(argument);
129 }
130 }
131 }
132
133 /*
134 * Will Fill in a java object array with alternating names of parsed command line options and
135 * the value that has been parsed for it:
136 * { name, value, name, value ... }
137 * This can then be checked from java.
138 */
139 WB_ENTRY(jobjectArray, WB_ParseCommandLine(JNIEnv* env, jobject o, jstring j_cmdline, jchar j_delim, jobjectArray arguments))
140 ResourceMark rm;
141 DCmdParser parser;
142
143 const char* c_cmdline = java_lang_String::as_utf8_string(JNIHandles::resolve(j_cmdline));
144 const char c_delim = j_delim & 0xff;
145 objArrayOop argumentArray = objArrayOop(JNIHandles::resolve_non_null(arguments));
146 objArrayHandle argumentArray_ah(THREAD, argumentArray);
147
148 int length = argumentArray_ah->length();
149
150 for (int i = 0; i < length; i++) {
151 oop argument_oop = argumentArray_ah->obj_at(i);
152 fill_in_parser(&parser, argument_oop);
153 }
154
155 CmdLine cmdline(c_cmdline, strlen(c_cmdline), true);
156 parser.parse(&cmdline,c_delim,CHECK_NULL);
157
158 Klass* k = SystemDictionary::Object_klass();
159 objArrayOop returnvalue_array = oopFactory::new_objArray(k, parser.num_arguments() * 2, CHECK_NULL);
160 objArrayHandle returnvalue_array_ah(THREAD, returnvalue_array);
161
162 GrowableArray<const char *>*parsedArgNames = parser.argument_name_array();
163 GenDCmdArgument* arglist = parser.arguments_list();
164
165 for (int i = 0; i < parser.num_arguments(); i++) {
166 oop parsedName = java_lang_String::create_oop_from_str(parsedArgNames->at(i), CHECK_NULL);
167 returnvalue_array_ah->obj_at_put(i*2, parsedName);
168 GenDCmdArgument* arg = parser.lookup_dcmd_option(parsedArgNames->at(i), strlen(parsedArgNames->at(i)));
169 if (!arg) {
170 arg = arglist;
171 arglist = arglist->next();
172 }
173 char buf[VALUE_MAXLEN];
174 if (arg) {
175 arg->value_as_str(buf, sizeof(buf));
176 } else {
177 sprintf(buf, "<null>");
178 }
179 oop parsedValue = java_lang_String::create_oop_from_str(buf, CHECK_NULL);
180 returnvalue_array_ah->obj_at_put(i*2+1, parsedValue);
181 }
182
183 return (jobjectArray) JNIHandles::make_local(returnvalue_array_ah());
184
185 WB_END