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 package sun.jvm.hotspot.utilities;
26
27 import java.util.*;
28 import sun.jvm.hotspot.oops.*;
29 import sun.jvm.hotspot.memory.*;
30 import sun.jvm.hotspot.runtime.*;
31
32 public class SystemDictionaryHelper {
33 static {
34 VM.registerVMInitializedObserver(new Observer() {
35 public void update(Observable o, Object data) {
36 initialize();
37 }
38 });
39 }
40
41 private static synchronized void initialize() {
42 klasses = null;
43 }
44
45 // Instance klass array sorted by name.
46 private static InstanceKlass[] klasses;
47
48 // side-effect!. caches the instance klass array.
49 public static synchronized InstanceKlass[] getAllInstanceKlasses() {
50 if (klasses != null) {
51 return klasses;
52 }
53
54 final Vector tmp = new Vector();
55 SystemDictionary dict = VM.getVM().getSystemDictionary();
56 dict.classesDo(new SystemDictionary.ClassVisitor() {
57 public void visit(Klass k) {
58 if (k instanceof InstanceKlass) {
59 InstanceKlass ik = (InstanceKlass) k;
60 tmp.add(ik);
61 }
62 }
63 });
64
65 Object[] tmpArray = tmp.toArray();
66 klasses = new InstanceKlass[tmpArray.length];
67 System.arraycopy(tmpArray, 0, klasses, 0, tmpArray.length);
68 Arrays.sort(klasses, new Comparator() {
69 public int compare(Object o1, Object o2) {
70 InstanceKlass k1 = (InstanceKlass) o1;
71 InstanceKlass k2 = (InstanceKlass) o2;
72 Symbol s1 = k1.getName();
73 Symbol s2 = k2.getName();
74 return s1.asString().compareTo(s2.asString());
75 }
76 });
83 InstanceKlass[] tmpKlasses = getAllInstanceKlasses();
84
85 Vector tmp = new Vector();
86 for (int i = 0; i < tmpKlasses.length; i++) {
87 String name = tmpKlasses[i].getName().asString();
88 if (name.indexOf(namePart) != -1) {
89 tmp.add(tmpKlasses[i]);
90 }
91 }
92
93 Object[] tmpArray = tmp.toArray();
94 InstanceKlass[] searchResult = new InstanceKlass[tmpArray.length];
95 System.arraycopy(tmpArray, 0, searchResult, 0, tmpArray.length);
96 return searchResult;
97 }
98
99 // find first class whose name matches exactly the given argument.
100 public static InstanceKlass findInstanceKlass(String className) {
101 // convert to internal name
102 className = className.replace('.', '/');
103 SystemDictionary sysDict = VM.getVM().getSystemDictionary();
104
105 // check whether we have a bootstrap class of given name
106 Klass klass = sysDict.find(className, null, null);
107 if (klass != null) {
108 return (InstanceKlass) klass;
109 }
110
111 // check whether we have a system class of given name
112 klass = sysDict.find(className, sysDict.javaSystemLoader(), null);
113 if (klass != null) {
114 return (InstanceKlass) klass;
115 }
116
117 // didn't find bootstrap or system class of given name.
118 // search through the entire dictionary..
119 InstanceKlass[] tmpKlasses = getAllInstanceKlasses();
120 // instance klass array is sorted by name. do binary search
121 int low = 0;
122 int high = tmpKlasses.length-1;
123
124 int mid = -1;
125 while (low <= high) {
126 mid = (low + high) >> 1;
127 InstanceKlass midVal = tmpKlasses[mid];
128 int cmp = midVal.getName().asString().compareTo(className);
129
130 if (cmp < 0) {
131 low = mid + 1;
132 } else if (cmp > 0) {
133 high = mid - 1;
134 } else { // match found
135 return tmpKlasses[mid];
136 }
137 }
138 // no match ..
139 return null;
140 }
141 }
|
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 package sun.jvm.hotspot.utilities;
26
27 import java.util.*;
28 import sun.jvm.hotspot.classfile.*;
29 import sun.jvm.hotspot.oops.*;
30 import sun.jvm.hotspot.memory.*;
31 import sun.jvm.hotspot.runtime.*;
32
33 public class SystemDictionaryHelper {
34 static {
35 VM.registerVMInitializedObserver(new Observer() {
36 public void update(Observable o, Object data) {
37 initialize();
38 }
39 });
40 }
41
42 private static synchronized void initialize() {
43 klasses = null;
44 }
45
46 // Instance klass array sorted by name.
47 private static InstanceKlass[] klasses;
48
49 // side-effect!. caches the instance klass array.
50 public static synchronized InstanceKlass[] getAllInstanceKlasses() {
51 if (klasses != null) {
52 return klasses;
53 }
54
55 final Vector tmp = new Vector();
56 ClassLoaderDataGraph cldg = VM.getVM().getClassLoaderDataGraph();
57 cldg.classesDo(new ClassLoaderDataGraph.ClassVisitor() {
58 public void visit(Klass k) {
59 if (k instanceof InstanceKlass) {
60 InstanceKlass ik = (InstanceKlass) k;
61 tmp.add(ik);
62 }
63 }
64 });
65
66 Object[] tmpArray = tmp.toArray();
67 klasses = new InstanceKlass[tmpArray.length];
68 System.arraycopy(tmpArray, 0, klasses, 0, tmpArray.length);
69 Arrays.sort(klasses, new Comparator() {
70 public int compare(Object o1, Object o2) {
71 InstanceKlass k1 = (InstanceKlass) o1;
72 InstanceKlass k2 = (InstanceKlass) o2;
73 Symbol s1 = k1.getName();
74 Symbol s2 = k2.getName();
75 return s1.asString().compareTo(s2.asString());
76 }
77 });
84 InstanceKlass[] tmpKlasses = getAllInstanceKlasses();
85
86 Vector tmp = new Vector();
87 for (int i = 0; i < tmpKlasses.length; i++) {
88 String name = tmpKlasses[i].getName().asString();
89 if (name.indexOf(namePart) != -1) {
90 tmp.add(tmpKlasses[i]);
91 }
92 }
93
94 Object[] tmpArray = tmp.toArray();
95 InstanceKlass[] searchResult = new InstanceKlass[tmpArray.length];
96 System.arraycopy(tmpArray, 0, searchResult, 0, tmpArray.length);
97 return searchResult;
98 }
99
100 // find first class whose name matches exactly the given argument.
101 public static InstanceKlass findInstanceKlass(String className) {
102 // convert to internal name
103 className = className.replace('.', '/');
104 ClassLoaderDataGraph cldg = VM.getVM().getClassLoaderDataGraph();
105
106 // check whether we have a class of given name
107 Klass klass = cldg.find(className);
108 if (klass != null && klass instanceof InstanceKlass) {
109 return (InstanceKlass) klass;
110 } else {
111 // no match ..
112 return null;
113 }
114 }
115 }
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