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 #include "precompiled.hpp"
26 #include "classfile/javaClasses.inline.hpp"
27 #include "jfr/recorder/checkpoint/types/traceid/jfrTraceIdEpoch.hpp"
28 #include "jfr/recorder/service/jfrOptionSet.hpp"
29 #include "jfr/recorder/storage/jfrMemorySpace.inline.hpp"
30 #include "jfr/recorder/repository/jfrChunkWriter.hpp"
31 #include "jfr/recorder/storage/jfrStorageUtils.inline.hpp"
32 #include "jfr/recorder/stringpool/jfrStringPool.hpp"
33 #include "jfr/recorder/stringpool/jfrStringPoolWriter.hpp"
34 #include "jfr/utilities/jfrTypes.hpp"
35 #include "logging/log.hpp"
36 #include "runtime/mutexLocker.hpp"
37 #include "runtime/orderAccess.hpp"
38 #include "runtime/safepoint.hpp"
39 #include "runtime/thread.inline.hpp"
40
41 typedef JfrStringPool::Buffer* BufferPtr;
42
43 static JfrStringPool* _instance = NULL;
44 static uint64_t store_generation = 0;
45 static uint64_t serialized_generation = 0;
46
47 inline void set_generation(uint64_t value, uint64_t* const dest) {
48 assert(dest != NULL, "invariant");
49 Atomic::release_store(dest, value);
50 }
51 static void increment_store_generation() {
52 const uint64_t current_serialized = Atomic::load_acquire(&serialized_generation);
53 const uint64_t current_stored = Atomic::load_acquire(&store_generation);
54 if (current_serialized == current_stored) {
55 set_generation(current_serialized + 1, &store_generation);
56 }
57 }
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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 #include "precompiled.hpp"
26 #include "classfile/javaClasses.inline.hpp"
27 #include "jfr/recorder/checkpoint/types/traceid/jfrTraceIdEpoch.hpp"
28 #include "jfr/recorder/service/jfrOptionSet.hpp"
29 #include "jfr/recorder/storage/jfrMemorySpace.inline.hpp"
30 #include "jfr/recorder/repository/jfrChunkWriter.hpp"
31 #include "jfr/recorder/storage/jfrStorageUtils.inline.hpp"
32 #include "jfr/recorder/stringpool/jfrStringPool.hpp"
33 #include "jfr/recorder/stringpool/jfrStringPoolWriter.hpp"
34 #include "jfr/utilities/jfrTypes.hpp"
35 #include "logging/log.hpp"
36 #include "runtime/atomic.hpp"
37 #include "runtime/mutexLocker.hpp"
38 #include "runtime/safepoint.hpp"
39 #include "runtime/thread.inline.hpp"
40
41 typedef JfrStringPool::Buffer* BufferPtr;
42
43 static JfrStringPool* _instance = NULL;
44 static uint64_t store_generation = 0;
45 static uint64_t serialized_generation = 0;
46
47 inline void set_generation(uint64_t value, uint64_t* const dest) {
48 assert(dest != NULL, "invariant");
49 Atomic::release_store(dest, value);
50 }
51 static void increment_store_generation() {
52 const uint64_t current_serialized = Atomic::load_acquire(&serialized_generation);
53 const uint64_t current_stored = Atomic::load_acquire(&store_generation);
54 if (current_serialized == current_stored) {
55 set_generation(current_serialized + 1, &store_generation);
56 }
57 }
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