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 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "jfr/recorder/stringpool/jfrStringPoolBuffer.hpp" 27 28 JfrStringPoolBuffer::JfrStringPoolBuffer() : JfrBuffer(), _string_count_pos(0), _string_count_top(0) {} 29 30 void JfrStringPoolBuffer::reinitialize() { 31 assert(acquired_by_self() || retired(), "invariant"); 32 concurrent_top(); 33 set_pos((start())); 34 set_string_pos(0); 35 set_string_top(0); 36 set_concurrent_top(start()); 37 } 38 39 uint64_t JfrStringPoolBuffer::string_pos() const { 40 assert(acquired_by_self() || retired(), "invariant"); 41 return _string_count_pos; 42 } 43 44 uint64_t JfrStringPoolBuffer::string_top() const { 45 assert(acquired_by_self() || retired(), "invariant"); 46 return _string_count_top; 47 } 48 49 uint64_t JfrStringPoolBuffer::string_count() const { 50 assert(acquired_by_self() || retired(), "invariant"); 51 return string_pos() - string_top(); 52 } 53 54 void JfrStringPoolBuffer::set_string_pos(uint64_t value) { 55 assert(acquired_by_self() || retired(), "invariant"); 56 _string_count_pos = value; 57 } 58 59 void JfrStringPoolBuffer::increment(uint64_t value) { 60 assert(acquired_by_self() || retired(), "invariant"); 61 ++_string_count_pos; 62 } 63 64 void JfrStringPoolBuffer::set_string_top(uint64_t value) { 65 assert(acquired_by_self() || retired(), "invariant"); 66 _string_count_top = value; 67 }