1 /*
2 * Copyright (c) 1997, 2017, 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 *
577 // This is called after GC threads are done and nothing is accessing the old_entries
578 // list, so no synchronization needed.
579 void OopMapCache::cleanup_old_entries() {
580 OopMapCacheEntry* entry = _old_entries;
581 _old_entries = NULL;
582 while (entry != NULL) {
583 if (log_is_enabled(Debug, interpreter, oopmap)) {
584 ResourceMark rm;
585 log_debug(interpreter, oopmap)("cleanup entry %s at bci %d",
586 entry->method()->name_and_sig_as_C_string(), entry->bci());
587 }
588 OopMapCacheEntry* next = entry->_next;
589 entry->flush();
590 FREE_C_HEAP_OBJ(entry);
591 entry = next;
592 }
593 }
594
595 void OopMapCache::compute_one_oop_map(const methodHandle& method, int bci, InterpreterOopMap* entry) {
596 // Due to the invariants above it's tricky to allocate a temporary OopMapCacheEntry on the stack
597 OopMapCacheEntry* tmp = NEW_C_HEAP_ARRAY(OopMapCacheEntry, 1, mtClass);
598 tmp->initialize();
599 tmp->fill(method, bci);
600 entry->resource_copy(tmp);
601 FREE_C_HEAP_ARRAY(OopMapCacheEntry, tmp);
602 }
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1 /*
2 * Copyright (c) 1997, 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 *
577 // This is called after GC threads are done and nothing is accessing the old_entries
578 // list, so no synchronization needed.
579 void OopMapCache::cleanup_old_entries() {
580 OopMapCacheEntry* entry = _old_entries;
581 _old_entries = NULL;
582 while (entry != NULL) {
583 if (log_is_enabled(Debug, interpreter, oopmap)) {
584 ResourceMark rm;
585 log_debug(interpreter, oopmap)("cleanup entry %s at bci %d",
586 entry->method()->name_and_sig_as_C_string(), entry->bci());
587 }
588 OopMapCacheEntry* next = entry->_next;
589 entry->flush();
590 FREE_C_HEAP_OBJ(entry);
591 entry = next;
592 }
593 }
594
595 void OopMapCache::compute_one_oop_map(const methodHandle& method, int bci, InterpreterOopMap* entry) {
596 // Due to the invariants above it's tricky to allocate a temporary OopMapCacheEntry on the stack
597 OopMapCacheEntry* tmp = NEW_C_HEAP_OBJ(OopMapCacheEntry, mtClass);
598 tmp->initialize();
599 tmp->fill(method, bci);
600 entry->resource_copy(tmp);
601 FREE_C_HEAP_OBJ(tmp);
602 }
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