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 #include "precompiled.hpp"
25 #include <string.h>
26 #include "utilities/globalDefinitions.hpp"
27 #include <sstream>
28 #include "gc/shared/memset_with_concurrent_readers.hpp"
29 #include "unittest.hpp"
30
31 #if INCLUDE_ALL_GCS
32
33 static unsigned line_byte(const char* line, size_t i) {
34 return unsigned(line[i]) & 0xFF;
35 }
36
37 TEST(gc, memset_with_concurrent_readers) {
38 const size_t chunk_size = 8 * BytesPerWord;
39 const unsigned chunk_count = 4;
40 const size_t block_size = (chunk_count + 4) * chunk_size;
41 char block[block_size];
42 char clear_block[block_size];
43 char set_block[block_size];
44
45 // block format:
46 // 0: unused leading chunk
47 // 1: chunk written from start index to end of chunk
48 // ... nchunks fully written chunks
49 // N: chunk written from start of chunk to end index
50 // N+1: unused trailing chunk
51
79 err_stream << std::dec << chunk << "," << line << ": " << std::hex
80 << std::setw(2) << line_byte(lp, 0) << " "
81 << std::setw(2) << line_byte(lp, 1) << " "
82 << std::setw(2) << line_byte(lp, 2) << " "
83 << std::setw(2) << line_byte(lp, 3) << " "
84 << std::setw(2) << line_byte(lp, 4) << " "
85 << std::setw(2) << line_byte(lp, 5) << " "
86 << std::setw(2) << line_byte(lp, 6) << " "
87 << std::setw(2) << line_byte(lp, 7) << std::endl;
88 }
89 }
90 EXPECT_TRUE(head_clear) << "leading byte not clear";
91 EXPECT_TRUE(middle_set) << "memset byte not set";
92 EXPECT_TRUE(tail_clear) << "trailing bye not clear";
93 ASSERT_TRUE(head_clear && middle_set && tail_clear) << err_stream.str();
94 }
95 }
96 }
97 }
98 }
99 #endif
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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 #include "precompiled.hpp"
25 #include "gc/shared/memset_with_concurrent_readers.hpp"
26 #include "utilities/globalDefinitions.hpp"
27 #include "unittest.hpp"
28
29 #include <string.h>
30 #include <sstream>
31
32 static unsigned line_byte(const char* line, size_t i) {
33 return unsigned(line[i]) & 0xFF;
34 }
35
36 TEST(gc, memset_with_concurrent_readers) {
37 const size_t chunk_size = 8 * BytesPerWord;
38 const unsigned chunk_count = 4;
39 const size_t block_size = (chunk_count + 4) * chunk_size;
40 char block[block_size];
41 char clear_block[block_size];
42 char set_block[block_size];
43
44 // block format:
45 // 0: unused leading chunk
46 // 1: chunk written from start index to end of chunk
47 // ... nchunks fully written chunks
48 // N: chunk written from start of chunk to end index
49 // N+1: unused trailing chunk
50
78 err_stream << std::dec << chunk << "," << line << ": " << std::hex
79 << std::setw(2) << line_byte(lp, 0) << " "
80 << std::setw(2) << line_byte(lp, 1) << " "
81 << std::setw(2) << line_byte(lp, 2) << " "
82 << std::setw(2) << line_byte(lp, 3) << " "
83 << std::setw(2) << line_byte(lp, 4) << " "
84 << std::setw(2) << line_byte(lp, 5) << " "
85 << std::setw(2) << line_byte(lp, 6) << " "
86 << std::setw(2) << line_byte(lp, 7) << std::endl;
87 }
88 }
89 EXPECT_TRUE(head_clear) << "leading byte not clear";
90 EXPECT_TRUE(middle_set) << "memset byte not set";
91 EXPECT_TRUE(tail_clear) << "trailing bye not clear";
92 ASSERT_TRUE(head_clear && middle_set && tail_clear) << err_stream.str();
93 }
94 }
95 }
96 }
97 }
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