9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 /*
27 * @test
28 * @bug 8054307
29 * @ignore 8152636
30 * @summary Validates StringCoding.hasNegatives intrinsic with a small range of tests.
31 * @run main/bootclasspath java.lang.TestHasNegatives
32 */
33 package java.lang;
34
35 import java.lang.StringCoding;
36
37 /*
38 * @summary Validates StringCoding.hasNegatives intrinsic with a small
39 * range of tests. Must be run with modified bootclasspath
40 * to allow existence in java.lang package.
41 */
42 public class TestHasNegatives {
43
44 private static byte[] tBa = new byte[4096 + 16];
45
46 /**
47 * Completely initialize the test array, preparing it for tests of the
48 * StringCoding.hasNegatives method with a given array segment offset,
49 * length, and number of negative bytes.
50 */
51 public static void initialize(int off, int len, int neg) {
52 assert (len + off <= tBa.length);
53 // insert "canary" (negative) values before offset
54 for (int i = 0; i < off; ++i) {
55 tBa[i] = (byte) (((i + 15) & 0x7F) | 0x80);
56 }
57 // fill the array segment
58 for (int i = off; i < len + off; ++i) {
59 tBa[i] = (byte) (((i - off + 15) & 0x7F));
60 }
78 private static int sizes[] = { 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 13, 17, 19, 23, 37, 61, 131,
79 4099 };
80
81 /**
82 * Test different array segment sizes, offsets, and number of negative
83 * bytes.
84 */
85 public static void test_hasNegatives() throws Exception {
86 int len, off;
87 int ng;
88 boolean r;
89
90 for (ng = 0; ng < 57; ++ng) { // number of negatives in array segment
91 for (off = 0; off < 8; ++off) { // starting offset of array segment
92 for (int i = 0; i < sizes.length; ++i) { // array segment size
93 // choice
94 len = sizes[i];
95 if (len + off > tBa.length)
96 continue;
97 initialize(off, len, ng);
98 r = StringCoding.hasNegatives(tBa, off, len);
99 if (r ^ ((ng == 0) ? false : true)) {
100 throw new Exception("Failed test hasNegatives " + "offset: " + off + " "
101 + "length: " + len + " " + "return: " + r + " " + "negatives: "
102 + ng);
103 }
104 }
105 }
106 }
107 }
108
109 public void run() throws Exception {
110 // iterate to eventually get intrinsic inlined
111 for (int j = 0; j < 1000; ++j) {
112 test_hasNegatives();
113 }
114 }
115
116 public static void main(String[] args) throws Exception {
117 (new TestHasNegatives()).run();
118 System.out.println("hasNegatives validated");
|
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 /*
27 * @test
28 * @bug 8054307
29 * @summary Validates StringCoding.hasNegatives intrinsic with a small range of tests.
30 * @library /compiler/patches
31 * @build java.base/java.lang.Helper
32 * @build compiler.intrinsics.string.TestHasNegatives
33 * @run main compiler.intrinsics.string.TestHasNegatives
34 */
35 package compiler.intrinsics.string;
36
37 import java.lang.Helper;
38
39 /*
40 * @summary Validates StringCoding.hasNegatives intrinsic with a small
41 * range of tests.
42 */
43 public class TestHasNegatives {
44
45 private static byte[] tBa = new byte[4096 + 16];
46
47 /**
48 * Completely initialize the test array, preparing it for tests of the
49 * StringCoding.hasNegatives method with a given array segment offset,
50 * length, and number of negative bytes.
51 */
52 public static void initialize(int off, int len, int neg) {
53 assert (len + off <= tBa.length);
54 // insert "canary" (negative) values before offset
55 for (int i = 0; i < off; ++i) {
56 tBa[i] = (byte) (((i + 15) & 0x7F) | 0x80);
57 }
58 // fill the array segment
59 for (int i = off; i < len + off; ++i) {
60 tBa[i] = (byte) (((i - off + 15) & 0x7F));
61 }
79 private static int sizes[] = { 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 13, 17, 19, 23, 37, 61, 131,
80 4099 };
81
82 /**
83 * Test different array segment sizes, offsets, and number of negative
84 * bytes.
85 */
86 public static void test_hasNegatives() throws Exception {
87 int len, off;
88 int ng;
89 boolean r;
90
91 for (ng = 0; ng < 57; ++ng) { // number of negatives in array segment
92 for (off = 0; off < 8; ++off) { // starting offset of array segment
93 for (int i = 0; i < sizes.length; ++i) { // array segment size
94 // choice
95 len = sizes[i];
96 if (len + off > tBa.length)
97 continue;
98 initialize(off, len, ng);
99 r = Helper.StringCodingHasNegatives(tBa, off, len);
100 if (r ^ ((ng == 0) ? false : true)) {
101 throw new Exception("Failed test hasNegatives " + "offset: " + off + " "
102 + "length: " + len + " " + "return: " + r + " " + "negatives: "
103 + ng);
104 }
105 }
106 }
107 }
108 }
109
110 public void run() throws Exception {
111 // iterate to eventually get intrinsic inlined
112 for (int j = 0; j < 1000; ++j) {
113 test_hasNegatives();
114 }
115 }
116
117 public static void main(String[] args) throws Exception {
118 (new TestHasNegatives()).run();
119 System.out.println("hasNegatives validated");
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