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 package jdk.vm.ci.code;
24
25 /**
26 * Represents a compiled instance of a method. It may have been invalidated or removed in the
27 * meantime.
28 */
29 public class InstalledCode {
30
31 /**
32 * Raw address of this code blob.
33 */
34 private long address;
35
36 /**
37 * Counts how often the address field was reassigned.
38 */
39 private long version;
40
41 protected final String name;
42
43 public InstalledCode(String name) {
44 this.name = name;
45 }
46
47 public final void setAddress(long address) {
48 this.address = address;
49 version++;
50 }
51
52 /**
53 * @return the address of this code blob
54 */
55 public final long getAddress() {
56 return address;
57 }
58
59 /**
60 * @return the address of this code blob
61 */
62 public final long getVersion() {
63 return version;
64 }
65
66 /**
67 * Returns the name of this code blob.
68 */
69 public String getName() {
70 return name;
71 }
72
73 /**
74 * Returns the start address of this installed code if it is {@linkplain #isValid() valid}, 0
75 * otherwise.
76 */
77 public long getStart() {
78 return 0;
79 }
80
81 /**
82 * Returns the number of instruction bytes for this code.
83 */
84 public long getCodeSize() {
85 return 0;
86 }
87
88 /**
89 * Returns a copy of this installed code if it is {@linkplain #isValid() valid}, null otherwise.
90 */
91 public byte[] getCode() {
92 return null;
93 }
94
95 /**
96 * @return true if the code represented by this object is still valid, false otherwise (may
97 * happen due to deopt, etc.)
98 */
99 public boolean isValid() {
100 return address != 0;
101 }
102
103 /**
104 * Invalidates this installed code such that any subsequent
105 * {@linkplain #executeVarargs(Object...) invocation} will throw an
106 * {@link InvalidInstalledCodeException}.
107 */
108 public void invalidate() {
109 throw new UnsupportedOperationException();
110 }
111
112 /**
113 * Executes the installed code with a variable number of arguments.
114 *
115 * @param args the array of object arguments
116 * @return the value returned by the executed code
117 */
118 @SuppressWarnings("unused")
119 public Object executeVarargs(Object... args) throws InvalidInstalledCodeException {
120 throw new UnsupportedOperationException();
121 }
122 }
|
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 package jdk.vm.ci.code;
24
25 /**
26 * Represents a compiled instance of a method. It may have been invalidated or removed in the
27 * meantime.
28 */
29 public class InstalledCode {
30
31 /**
32 * Raw address address of entity representing this installed code.
33 */
34 protected long address;
35
36 /**
37 * Raw address of entryPoint of this installed code.
38 */
39 protected long entryPoint;
40
41 /**
42 * Counts how often the address field was reassigned.
43 */
44 protected long version;
45
46 protected final String name;
47
48 public InstalledCode(String name) {
49 this.name = name;
50 }
51
52 /**
53 * @return the address of entity representing this installed code.
54 */
55 public final long getAddress() {
56 return address;
57 }
58
59 /**
60 * @return the address of the normal entry point of the installed code.
61 */
62 public final long getEntryPoint() {
63 return entryPoint;
64 }
65
66 /**
67 * @return the version number of this installed code
68 */
69 public final long getVersion() {
70 return version;
71 }
72
73 /**
74 * Returns the name of this installed code.
75 */
76 public String getName() {
77 return name;
78 }
79
80 /**
81 * Returns the start address of this installed code if it is {@linkplain #isValid() valid}, 0
82 * otherwise.
83 */
84 public long getStart() {
85 return 0;
86 }
87
88 /**
89 * @return true if the code represented by this object is still valid for invocation, false
90 * otherwise (may happen due to deopt, etc.)
91 */
92 public boolean isValid() {
93 return entryPoint != 0;
94 }
95
96 /**
97 * @return true if the code represented by this object still exists and might have live
98 * activations, false otherwise (may happen due to deopt, etc.)
99 */
100 public boolean isAlive() {
101 return address != 0;
102 }
103
104 /**
105 * Returns a copy of this installed code if it is {@linkplain #isValid() valid}, null otherwise.
106 */
107 public byte[] getCode() {
108 return null;
109 }
110
111 /**
112 * Invalidates this installed code such that any subsequent
113 * {@linkplain #executeVarargs(Object...) invocation} will throw an
114 * {@link InvalidInstalledCodeException} and all existing invocations will be deoptimized.
115 */
116 public void invalidate() {
117 throw new UnsupportedOperationException();
118 }
119
120 /**
121 * Executes the installed code with a variable number of arguments.
122 *
123 * @param args the array of object arguments
124 * @return the value returned by the executed code
125 */
126 @SuppressWarnings("unused")
127 public Object executeVarargs(Object... args) throws InvalidInstalledCodeException {
128 throw new UnsupportedOperationException();
129 }
130 }
|