1 /*
2 * Copyright (c) 2015, 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 "runtime/flags/jvmFlagWriteableList.hpp"
27 #include "runtime/os.hpp"
28
29 bool JVMFlagWriteable::is_writeable(void) {
30 return _writeable;
31 }
32
33 void JVMFlagWriteable::mark_once(void) {
34 if (_type == Once) {
35 _writeable = false;
36 }
37 }
38
39 void JVMFlagWriteable::mark_startup(void) {
40 if (_type == JVMFlagWriteable::CommandLineOnly) {
41 _writeable = false;
42 }
43 }
44
45 // No control emitting
46 void emit_writeable_no(...) { /* NOP */ }
47
48 // No control emitting if type argument is NOT provided
49 void emit_writeable_bool(const char* /*name*/) { /* NOP */ }
50 void emit_writeable_ccstr(const char* /*name*/) { /* NOP */ }
51 void emit_writeable_ccstrlist(const char* /*name*/) { /* NOP */ }
52 void emit_writeable_int(const char* /*name*/) { /* NOP */ }
53 void emit_writeable_intx(const char* /*name*/) { /* NOP */ }
54 void emit_writeable_uint(const char* /*name*/) { /* NOP */ }
55 void emit_writeable_uintx(const char* /*name*/) { /* NOP */ }
56 void emit_writeable_uint64_t(const char* /*name*/) { /* NOP */ }
57 void emit_writeable_size_t(const char* /*name*/) { /* NOP */ }
58 void emit_writeable_double(const char* /*name*/) { /* NOP */ }
59
60 // JVMFlagWriteable emitting code functions if range arguments are provided
61 void emit_writeable_bool(const char* name, JVMFlagWriteable::WriteableType type) {
62 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
63 }
64 void emit_writeable_int(const char* name, JVMFlagWriteable::WriteableType type) {
65 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
66 }
67 void emit_writeable_intx(const char* name, JVMFlagWriteable::WriteableType type) {
68 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
69 }
70 void emit_writeable_uint(const char* name, JVMFlagWriteable::WriteableType type) {
71 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
72 }
73 void emit_writeable_uintx(const char* name, JVMFlagWriteable::WriteableType type) {
74 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
75 }
76 void emit_writeable_uint64_t(const char* name, JVMFlagWriteable::WriteableType type) {
77 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
78 }
79 void emit_writeable_size_t(const char* name, JVMFlagWriteable::WriteableType type) {
80 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
81 }
82 void emit_writeable_double(const char* name, JVMFlagWriteable::WriteableType type) {
83 JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));
84 }
85
86 // Generate code to call emit_writeable_xxx function
87 #define EMIT_WRITEABLE_START (void)(0
88 #define EMIT_WRITEABLE(type, name) ); emit_writeable_##type(#name
89 #define EMIT_WRITEABLE_PRODUCT_FLAG(type, name, value, doc) EMIT_WRITEABLE(type, name)
90 #define EMIT_WRITEABLE_DIAGNOSTIC_FLAG(type, name, value, doc) EMIT_WRITEABLE(type, name)
91 #define EMIT_WRITEABLE_EXPERIMENTAL_FLAG(type, name, value, doc) EMIT_WRITEABLE(type, name)
92 #define EMIT_WRITEABLE_MANAGEABLE_FLAG(type, name, value, doc) EMIT_WRITEABLE(type, name)
93 #define EMIT_WRITEABLE_PRODUCT_RW_FLAG(type, name, value, doc) EMIT_WRITEABLE(type, name)
94 #define EMIT_WRITEABLE_PD_PRODUCT_FLAG(type, name, doc) EMIT_WRITEABLE(type, name)
95 #define EMIT_WRITEABLE_DEVELOPER_FLAG(type, name, value, doc) EMIT_WRITEABLE(type, name)
96 #define EMIT_WRITEABLE_PD_DEVELOPER_FLAG(type, name, doc) EMIT_WRITEABLE(type, name)
97 #define EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG(type, name, doc) EMIT_WRITEABLE(type, name)
98 #define EMIT_WRITEABLE_NOTPRODUCT_FLAG(type, name, value, doc) EMIT_WRITEABLE(type, name)
99 #define EMIT_WRITEABLE_LP64_PRODUCT_FLAG(type, name, value, doc) EMIT_WRITEABLE(type, name)
100 #define EMIT_WRITEABLE_END );
101
102 // Generate type argument to pass into emit_writeable_xxx functions
103 #define EMIT_WRITEABLE_CHECK(a) , JVMFlagWriteable::a
104
105 #define INITIAL_WRITEABLES_SIZE 2
106 GrowableArray<JVMFlagWriteable*>* JVMFlagWriteableList::_controls = NULL;
107
108 void JVMFlagWriteableList::init(void) {
109
110 _controls = new (ResourceObj::C_HEAP, mtArguments) GrowableArray<JVMFlagWriteable*>(INITIAL_WRITEABLES_SIZE, true);
111
112 EMIT_WRITEABLE_START
113
114 ALL_FLAGS(EMIT_WRITEABLE_DEVELOPER_FLAG,
115 EMIT_WRITEABLE_PD_DEVELOPER_FLAG,
116 EMIT_WRITEABLE_PRODUCT_FLAG,
117 EMIT_WRITEABLE_PD_PRODUCT_FLAG,
118 EMIT_WRITEABLE_DIAGNOSTIC_FLAG,
119 EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG,
120 EMIT_WRITEABLE_EXPERIMENTAL_FLAG,
121 EMIT_WRITEABLE_NOTPRODUCT_FLAG,
122 EMIT_WRITEABLE_MANAGEABLE_FLAG,
123 EMIT_WRITEABLE_PRODUCT_RW_FLAG,
124 EMIT_WRITEABLE_LP64_PRODUCT_FLAG,
125 IGNORE_RANGE,
126 IGNORE_CONSTRAINT,
127 EMIT_WRITEABLE_CHECK)
128
129 EMIT_WRITEABLE_END
130 }
131
132 JVMFlagWriteable* JVMFlagWriteableList::find(const char* name) {
133 JVMFlagWriteable* found = NULL;
134 for (int i=0; i<length(); i++) {
135 JVMFlagWriteable* writeable = at(i);
136 if (strcmp(writeable->name(), name) == 0) {
137 found = writeable;
138 break;
139 }
140 }
141 return found;
142 }
143
144 void JVMFlagWriteableList::mark_startup(void) {
145 for (int i=0; i<length(); i++) {
146 JVMFlagWriteable* writeable = at(i);
147 writeable->mark_startup();
148 }
149 }