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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
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#ifndef SHARE_JFR_SUPPORT_JFRTHREADID_INLINE_HPP
#define SHARE_JFR_SUPPORT_JFRTHREADID_INLINE_HPP
#include "jfr/support/jfrThreadId.hpp"
#include "classfile/javaClasses.inline.hpp"
#include "jfr/recorder/checkpoint/types/traceid/jfrTraceIdEpoch.hpp"
#include "jfr/utilities/jfrTypes.hpp"
#include "memory/allocation.inline.hpp"
static constexpr const u2 excluded_bit = 32768;
static constexpr const u2 epoch_mask = excluded_bit - 1;
class ThreadIdAccess : AllStatic {
public:
static traceid id(oop ref) {
return static_cast<traceid>(java_lang_Thread::thread_id(ref));
}
static bool is_excluded(oop ref) {
return epoch(ref) & excluded_bit;
}
static void include(oop ref) {
assert(is_excluded(ref), "invariant");
set_epoch(ref, epoch(ref) ^ excluded_bit);
}
static void exclude(oop ref) {
set_epoch(ref, excluded_bit | epoch(ref));
}
static u2 epoch(oop ref) {
return java_lang_Thread::jfr_epoch(ref);
}
static void set_epoch(oop ref, u2 epoch) {
java_lang_Thread::set_jfr_epoch(ref, epoch);
}
static u2 current_epoch() {
return JfrTraceIdEpoch::epoch_generation();
}
};
#endif // SHARE_JFR_SUPPORT_JFRTHREADID_INLINE_HPP
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