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.hotspot;
26
27 import java.lang.reflect.Executable;
28 import java.security.BasicPermission;
29 import sun.hotspot.parser.DiagnosticCommand;
30
31 public class WhiteBox {
32
33 @SuppressWarnings("serial")
34 public static class WhiteBoxPermission extends BasicPermission {
35 public WhiteBoxPermission(String s) {
36 super(s);
37 }
38 }
39
40 private WhiteBox() {}
41 private static final WhiteBox instance = new WhiteBox();
42 private static native void registerNatives();
43
44 /**
45 * Returns the singleton WhiteBox instance.
46 *
47 * The returned WhiteBox object should be carefully guarded
126 public native int getMethodCompilationLevel(Executable method, boolean isOsr);
127 public native boolean testSetDontInlineMethod(Executable method, boolean value);
128 public int getCompileQueuesSize() {
129 return getCompileQueueSize(-1 /*any*/);
130 }
131 public native int getCompileQueueSize(int compLevel);
132 public native boolean testSetForceInlineMethod(Executable method, boolean value);
133 public boolean enqueueMethodForCompilation(Executable method, int compLevel) {
134 return enqueueMethodForCompilation(method, compLevel, -1 /*InvocationEntryBci*/);
135 }
136 public native boolean enqueueMethodForCompilation(Executable method, int compLevel, int entry_bci);
137 public native void clearMethodState(Executable method);
138 public native int getMethodEntryBci(Executable method);
139 public native Object[] getNMethod(Executable method, boolean isOsr);
140
141 // Intered strings
142 public native boolean isInStringTable(String str);
143
144 // Memory
145 public native void readReservedMemory();
146
147 // force Full GC
148 public native void fullGC();
149
150 // Tests on ReservedSpace/VirtualSpace classes
151 public native int stressVirtualSpaceResize(long reservedSpaceSize, long magnitude, long iterations);
152 public native void runMemoryUnitTests();
153 public native void readFromNoaccessArea();
154
155 // CPU features
156 public native String getCPUFeatures();
157
158 }
|
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.hotspot;
26
27 import java.lang.reflect.Executable;
28 import java.util.Arrays;
29 import java.util.List;
30 import java.util.function.Function;
31 import java.util.stream.Stream;
32 import java.security.BasicPermission;
33 import sun.hotspot.parser.DiagnosticCommand;
34
35 public class WhiteBox {
36
37 @SuppressWarnings("serial")
38 public static class WhiteBoxPermission extends BasicPermission {
39 public WhiteBoxPermission(String s) {
40 super(s);
41 }
42 }
43
44 private WhiteBox() {}
45 private static final WhiteBox instance = new WhiteBox();
46 private static native void registerNatives();
47
48 /**
49 * Returns the singleton WhiteBox instance.
50 *
51 * The returned WhiteBox object should be carefully guarded
130 public native int getMethodCompilationLevel(Executable method, boolean isOsr);
131 public native boolean testSetDontInlineMethod(Executable method, boolean value);
132 public int getCompileQueuesSize() {
133 return getCompileQueueSize(-1 /*any*/);
134 }
135 public native int getCompileQueueSize(int compLevel);
136 public native boolean testSetForceInlineMethod(Executable method, boolean value);
137 public boolean enqueueMethodForCompilation(Executable method, int compLevel) {
138 return enqueueMethodForCompilation(method, compLevel, -1 /*InvocationEntryBci*/);
139 }
140 public native boolean enqueueMethodForCompilation(Executable method, int compLevel, int entry_bci);
141 public native void clearMethodState(Executable method);
142 public native int getMethodEntryBci(Executable method);
143 public native Object[] getNMethod(Executable method, boolean isOsr);
144
145 // Intered strings
146 public native boolean isInStringTable(String str);
147
148 // Memory
149 public native void readReservedMemory();
150 public native long allocateMetaspace(ClassLoader classLoader, long size);
151 public native void freeMetaspace(ClassLoader classLoader, long addr, long size);
152
153 // force Full GC
154 public native void fullGC();
155
156 // Tests on ReservedSpace/VirtualSpace classes
157 public native int stressVirtualSpaceResize(long reservedSpaceSize, long magnitude, long iterations);
158 public native void runMemoryUnitTests();
159 public native void readFromNoaccessArea();
160 public native long getThreadStackSize();
161 public native long getThreadRemainingStackSize();
162
163 // CPU features
164 public native String getCPUFeatures();
165
166 // VM flags
167 public native void setBooleanVMFlag(String name, boolean value);
168 public native void setIntxVMFlag(String name, long value);
169 public native void setUintxVMFlag(String name, long value);
170 public native void setUint64VMFlag(String name, long value);
171 public native void setStringVMFlag(String name, String value);
172 public native void setDoubleVMFlag(String name, double value);
173 public native Boolean getBooleanVMFlag(String name);
174 public native Long getIntxVMFlag(String name);
175 public native Long getUintxVMFlag(String name);
176 public native Long getUint64VMFlag(String name);
177 public native String getStringVMFlag(String name);
178 public native Double getDoubleVMFlag(String name);
179 private final List<Function<String,Object>> flagsGetters = Arrays.asList(
180 this::getBooleanVMFlag, this::getIntxVMFlag, this::getUintxVMFlag,
181 this::getUint64VMFlag, this::getStringVMFlag, this::getDoubleVMFlag);
182
183 public Object getVMFlag(String name) {
184 return flagsGetters.stream()
185 .map(f -> f.apply(name))
186 .filter(x -> x != null)
187 .findAny()
188 .orElse(null);
189 }
190 }
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