1 /*
2 * Copyright (c) 2015, 2016, 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 "gc/shared/plab.hpp"
27 #include "runtime/flags/jvmFlagWriteableList.hpp"
28 #include "runtime/os.hpp"
29 #ifdef COMPILER1
30 #include "c1/c1_globals.hpp"
31 #endif // COMPILER1
32 #ifdef COMPILER2
33 #include "opto/c2_globals.hpp"
34 #endif // COMPILER2
35 #if INCLUDE_JVMCI
36 #include "jvmci/jvmci_globals.hpp"
37 #endif
38
39 bool JVMFlagWriteable::is_writeable(void) {
40 return _writeable;
41 }
42
43 void JVMFlagWriteable::mark_once(void) {
44 if (_type == Once) {
45 _writeable = false;
46 }
47 }
48
49 void JVMFlagWriteable::mark_startup(void) {
50 if (_type == JVMFlagWriteable::CommandLineOnly) {
51 _writeable = false;
52 }
53 }
54
55 // No control emitting
56 void emit_writeable_no(...) { /* NOP */ }
57
58 // No control emitting if type argument is NOT provided
59 void emit_writeable_bool(const char* /*name*/) { /* NOP */ }
60 void emit_writeable_ccstr(const char* /*name*/) { /* NOP */ }
61 void emit_writeable_ccstrlist(const char* /*name*/) { /* NOP */ }
62 void emit_writeable_int(const char* /*name*/) { /* NOP */ }
63 void emit_writeable_intx(const char* /*name*/) { /* NOP */ }
64 void emit_writeable_uint(const char* /*name*/) { /* NOP */ }
65 void emit_writeable_uintx(const char* /*name*/) { /* NOP */ }
66 void emit_writeable_uint64_t(const char* /*name*/) { /* NOP */ }
67 void emit_writeable_size_t(const char* /*name*/) { /* NOP */ }
68 void emit_writeable_double(const char* /*name*/) { /* NOP */ }
69
70 // JVMFlagWriteable emitting code functions if range arguments are provided
71 void emit_writeable_bool(const char* name, JVMFlagWriteable::WriteableType type) {
72 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
73 }
74 void emit_writeable_int(const char* name, JVMFlagWriteable::WriteableType type) {
75 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
76 }
77 void emit_writeable_intx(const char* name, JVMFlagWriteable::WriteableType type) {
78 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
79 }
80 void emit_writeable_uint(const char* name, JVMFlagWriteable::WriteableType type) {
81 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
82 }
83 void emit_writeable_uintx(const char* name, JVMFlagWriteable::WriteableType type) {
84 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
85 }
86 void emit_writeable_uint64_t(const char* name, JVMFlagWriteable::WriteableType type) {
87 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
88 }
89 void emit_writeable_size_t(const char* name, JVMFlagWriteable::WriteableType type) {
90 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
91 }
92 void emit_writeable_double(const char* name, JVMFlagWriteable::WriteableType type) {
93 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
94 }
95
96 // Generate code to call emit_writeable_xxx function
97 #define EMIT_WRITEABLE_PRODUCT_FLAG(type, name, value, doc) ); emit_writeable_##type(#name
98 #define EMIT_WRITEABLE_COMMERCIAL_FLAG(type, name, value, doc) ); emit_writeable_##type(#name
99 #define EMIT_WRITEABLE_DIAGNOSTIC_FLAG(type, name, value, doc) ); emit_writeable_##type(#name
100 #define EMIT_WRITEABLE_EXPERIMENTAL_FLAG(type, name, value, doc) ); emit_writeable_##type(#name
101 #define EMIT_WRITEABLE_MANAGEABLE_FLAG(type, name, value, doc) ); emit_writeable_##type(#name
102 #define EMIT_WRITEABLE_PRODUCT_RW_FLAG(type, name, value, doc) ); emit_writeable_##type(#name
103 #define EMIT_WRITEABLE_PD_PRODUCT_FLAG(type, name, doc) ); emit_writeable_##type(#name
104 #define EMIT_WRITEABLE_DEVELOPER_FLAG(type, name, value, doc) ); emit_writeable_##type(#name
105 #define EMIT_WRITEABLE_PD_DEVELOPER_FLAG(type, name, doc) ); emit_writeable_##type(#name
106 #define EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG(type, name, doc) ); emit_writeable_##type(#name
107 #define EMIT_WRITEABLE_NOTPRODUCT_FLAG(type, name, value, doc) ); emit_writeable_##type(#name
108 #define EMIT_WRITEABLE_LP64_PRODUCT_FLAG(type, name, value, doc) ); emit_writeable_##type(#name
109
110 // Generate type argument to pass into emit_writeable_xxx functions
111 #define EMIT_WRITEABLE(a) , JVMFlagWriteable::a
112
113 #define INITIAL_WRITEABLES_SIZE 2
114 GrowableArray<JVMFlagWriteable*>* JVMFlagWriteableList::_controls = NULL;
115
116 void JVMFlagWriteableList::init(void) {
117
118 _controls = new (ResourceObj::C_HEAP, mtArguments) GrowableArray<JVMFlagWriteable*>(INITIAL_WRITEABLES_SIZE, true);
119
120 emit_writeable_no(NULL VM_FLAGS(EMIT_WRITEABLE_DEVELOPER_FLAG,
121 EMIT_WRITEABLE_PD_DEVELOPER_FLAG,
122 EMIT_WRITEABLE_PRODUCT_FLAG,
123 EMIT_WRITEABLE_PD_PRODUCT_FLAG,
124 EMIT_WRITEABLE_DIAGNOSTIC_FLAG,
125 EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG,
126 EMIT_WRITEABLE_EXPERIMENTAL_FLAG,
127 EMIT_WRITEABLE_NOTPRODUCT_FLAG,
128 EMIT_WRITEABLE_MANAGEABLE_FLAG,
129 EMIT_WRITEABLE_PRODUCT_RW_FLAG,
130 EMIT_WRITEABLE_LP64_PRODUCT_FLAG,
131 IGNORE_RANGE,
132 IGNORE_CONSTRAINT,
133 EMIT_WRITEABLE));
134
135 EMIT_WRITEABLES_FOR_GLOBALS_EXT
136
137 emit_writeable_no(NULL ARCH_FLAGS(EMIT_WRITEABLE_DEVELOPER_FLAG,
138 EMIT_WRITEABLE_PRODUCT_FLAG,
139 EMIT_WRITEABLE_DIAGNOSTIC_FLAG,
140 EMIT_WRITEABLE_EXPERIMENTAL_FLAG,
141 EMIT_WRITEABLE_NOTPRODUCT_FLAG,
142 IGNORE_RANGE,
143 IGNORE_CONSTRAINT,
144 EMIT_WRITEABLE));
145
146 #if INCLUDE_JVMCI
147 emit_writeable_no(NULL JVMCI_FLAGS(EMIT_WRITEABLE_DEVELOPER_FLAG,
148 EMIT_WRITEABLE_PD_DEVELOPER_FLAG,
149 EMIT_WRITEABLE_PRODUCT_FLAG,
150 EMIT_WRITEABLE_PD_PRODUCT_FLAG,
151 EMIT_WRITEABLE_DIAGNOSTIC_FLAG,
152 EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG,
153 EMIT_WRITEABLE_EXPERIMENTAL_FLAG,
154 EMIT_WRITEABLE_NOTPRODUCT_FLAG,
155 IGNORE_RANGE,
156 IGNORE_CONSTRAINT,
157 EMIT_WRITEABLE));
158 #endif // INCLUDE_JVMCI
159
160 #ifdef COMPILER1
161 emit_writeable_no(NULL C1_FLAGS(EMIT_WRITEABLE_DEVELOPER_FLAG,
162 EMIT_WRITEABLE_PD_DEVELOPER_FLAG,
163 EMIT_WRITEABLE_PRODUCT_FLAG,
164 EMIT_WRITEABLE_PD_PRODUCT_FLAG,
165 EMIT_WRITEABLE_DIAGNOSTIC_FLAG,
166 EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG,
167 EMIT_WRITEABLE_NOTPRODUCT_FLAG,
168 IGNORE_RANGE,
169 IGNORE_CONSTRAINT,
170 EMIT_WRITEABLE));
171 #endif // COMPILER1
172
173 #ifdef COMPILER2
174 emit_writeable_no(NULL C2_FLAGS(EMIT_WRITEABLE_DEVELOPER_FLAG,
175 EMIT_WRITEABLE_PD_DEVELOPER_FLAG,
176 EMIT_WRITEABLE_PRODUCT_FLAG,
177 EMIT_WRITEABLE_PD_PRODUCT_FLAG,
178 EMIT_WRITEABLE_DIAGNOSTIC_FLAG,
179 EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG,
180 EMIT_WRITEABLE_EXPERIMENTAL_FLAG,
181 EMIT_WRITEABLE_NOTPRODUCT_FLAG,
182 IGNORE_RANGE,
183 IGNORE_CONSTRAINT,
184 EMIT_WRITEABLE));
185 #endif // COMPILER2
186 }
187
188 JVMFlagWriteable* JVMFlagWriteableList::find(const char* name) {
189 JVMFlagWriteable* found = NULL;
190 for (int i=0; i<length(); i++) {
191 JVMFlagWriteable* writeable = at(i);
192 if (strcmp(writeable->name(), name) == 0) {
193 found = writeable;
194 break;
195 }
196 }
197 return found;
198 }
199
200 void JVMFlagWriteableList::mark_startup(void) {
201 for (int i=0; i<length(); i++) {
202 JVMFlagWriteable* writeable = at(i);
203 writeable->mark_startup();
204 }
205 }