/* * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * 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 * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_JFR_WRITERS_JFRENCODING_HPP #define SHARE_VM_JFR_WRITERS_JFRENCODING_HPP #include "jfr/writers/jfrEncoders.hpp" #include "memory/allocation.hpp" #include "utilities/globalDefinitions.hpp" enum JfrStringEncoding { NULL_STRING = 0, EMPTY_STRING, STRING_CONSTANT, UTF8, UTF16, LATIN1, NOF_STRING_ENCODINGS }; template class EncoderHost : public AllStatic { public: template static u1* be_write(T value, u1* pos) { return be_write(&value, 1, pos); } template static u1* be_write(const T* value, size_t len, u1* pos) { assert(value != NULL, "invariant"); assert(pos != NULL, "invariant"); assert(len > 0, "invariant"); return pos + BaseEncoder::encode(value, len, pos); } template static u1* write_padded(T value, u1* pos) { assert(pos != NULL, "invariant"); return write_padded(&value, 1, pos); } template static u1* write_padded(const T* value, size_t len, u1* pos) { assert(value != NULL, "invariant"); assert(pos != NULL, "invariant"); assert(len > 0, "invariant"); return pos + IntegerEncoder::encode_padded(value, len, pos); } template static u1* write(T value, u1* pos) { return write(&value, 1, pos); } template static u1* write(const T* value, size_t len, u1* pos) { assert(value != NULL, "invariant"); assert(pos != NULL, "invariant"); assert(len > 0, "invariant"); return pos + IntegerEncoder::encode(value, len, pos); } static u1* write(bool value, u1* pos) { return be_write((u1)value, pos); } static u1* write(float value, u1* pos) { return be_write(*(u4*)&(value), pos); } static u1* write(double value, u1* pos) { return be_write(*(u8*)&(value), pos); } static u1* write(const char* value, u1* pos) { u2 len = 0; if (value != NULL) { len = MIN2(max_jushort, (jushort)strlen(value)); } pos = write(len, pos); if (len > 0) { pos = be_write(value, len, pos); } return pos; } static u1* write(char* value, u1* pos) { return write(const_cast(value), pos); } }; typedef EncoderHost BigEndianEncoder; typedef EncoderHost CompressedIntegerEncoder; #endif // SHARE_VM_JFR_WRITERS_JFRENCODING_HPP