1 /*
2 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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 *
118 }
119
120 void JfrCheckpointManager::synchronize_epoch() {
121 assert(_checkpoint_epoch_state != JfrTraceIdEpoch::current(), "invariant");
122 OrderAccess::storestore();
123 _checkpoint_epoch_state = JfrTraceIdEpoch::current();
124 }
125
126 void JfrCheckpointManager::shift_epoch() {
127 debug_only(const u1 current_epoch = JfrTraceIdEpoch::current();)
128 JfrTraceIdEpoch::shift_epoch();
129 assert(current_epoch != JfrTraceIdEpoch::current(), "invariant");
130 }
131
132 void JfrCheckpointManager::register_service_thread(const Thread* thread) {
133 _service_thread = thread;
134 }
135
136 void JfrCheckpointManager::register_full(BufferPtr t, Thread* thread) {
137 // nothing here at the moment
138 assert(t->retired(), "invariant");
139 }
140
141 void JfrCheckpointManager::lock() {
142 assert(!_lock->owned_by_self(), "invariant");
143 _lock->lock_without_safepoint_check();
144 }
145
146 void JfrCheckpointManager::unlock() {
147 _lock->unlock();
148 }
149
150 #ifdef ASSERT
151
152 bool JfrCheckpointManager::is_locked() const {
153 return _lock->owned_by_self();
154 }
155
156 static void assert_free_lease(const BufferPtr buffer) {
157 assert(buffer != NULL, "invariant");
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1 /*
2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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 *
118 }
119
120 void JfrCheckpointManager::synchronize_epoch() {
121 assert(_checkpoint_epoch_state != JfrTraceIdEpoch::current(), "invariant");
122 OrderAccess::storestore();
123 _checkpoint_epoch_state = JfrTraceIdEpoch::current();
124 }
125
126 void JfrCheckpointManager::shift_epoch() {
127 debug_only(const u1 current_epoch = JfrTraceIdEpoch::current();)
128 JfrTraceIdEpoch::shift_epoch();
129 assert(current_epoch != JfrTraceIdEpoch::current(), "invariant");
130 }
131
132 void JfrCheckpointManager::register_service_thread(const Thread* thread) {
133 _service_thread = thread;
134 }
135
136 void JfrCheckpointManager::register_full(BufferPtr t, Thread* thread) {
137 // nothing here at the moment
138 assert(t != NULL, "invariant");
139 assert(t->acquired_by(thread), "invariant");
140 assert(t->retired(), "invariant");
141 }
142
143 void JfrCheckpointManager::lock() {
144 assert(!_lock->owned_by_self(), "invariant");
145 _lock->lock_without_safepoint_check();
146 }
147
148 void JfrCheckpointManager::unlock() {
149 _lock->unlock();
150 }
151
152 #ifdef ASSERT
153
154 bool JfrCheckpointManager::is_locked() const {
155 return _lock->owned_by_self();
156 }
157
158 static void assert_free_lease(const BufferPtr buffer) {
159 assert(buffer != NULL, "invariant");
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