apetushkov@9858: /*
apetushkov@9858:  * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
apetushkov@9858:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
apetushkov@9858:  *
apetushkov@9858:  * This code is free software; you can redistribute it and/or modify it
apetushkov@9858:  * under the terms of the GNU General Public License version 2 only, as
apetushkov@9858:  * published by the Free Software Foundation.
apetushkov@9858:  *
apetushkov@9858:  * This code is distributed in the hope that it will be useful, but WITHOUT
apetushkov@9858:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
apetushkov@9858:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
apetushkov@9858:  * version 2 for more details (a copy is included in the LICENSE file that
apetushkov@9858:  * accompanied this code).
apetushkov@9858:  *
apetushkov@9858:  * You should have received a copy of the GNU General Public License version
apetushkov@9858:  * 2 along with this work; if not, write to the Free Software Foundation,
apetushkov@9858:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
apetushkov@9858:  *
apetushkov@9858:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
apetushkov@9858:  * or visit www.oracle.com if you need additional information or have any
apetushkov@9858:  * questions.
apetushkov@9858:  *
apetushkov@9858:  */
apetushkov@9858: 
apetushkov@9858: #ifndef SHARE_VM_JFR_WRITERS_JFRSTREAMWRITERHOST_INLINE_HPP
apetushkov@9858: #define SHARE_VM_JFR_WRITERS_JFRSTREAMWRITERHOST_INLINE_HPP
apetushkov@9858: 
apetushkov@9858: #include "jfr/writers/jfrStreamWriterHost.hpp"
apetushkov@9858: #include "runtime/os.hpp"
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: StreamWriterHost<Adapter, AP>::StreamWriterHost(typename Adapter::StorageType* storage, Thread* thread) :
apetushkov@9858:   MemoryWriterHost<Adapter, AP>(storage, thread), _stream_pos(0), _fd(invalid_fd) {
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: StreamWriterHost<Adapter, AP>::StreamWriterHost(typename Adapter::StorageType* storage, size_t size) :
apetushkov@9858:   MemoryWriterHost<Adapter, AP>(storage, size), _stream_pos(0), _fd(invalid_fd) {
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: StreamWriterHost<Adapter, AP>::StreamWriterHost(Thread* thread) :
apetushkov@9858:   MemoryWriterHost<Adapter, AP>(thread), _stream_pos(0), _fd(invalid_fd) {
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
bulasevich@9947: inline int64_t StreamWriterHost<Adapter, AP>::current_stream_position() const {
apetushkov@9858:   return this->used_offset() + _stream_pos;
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: inline bool StreamWriterHost<Adapter, AP>::accommodate(size_t used, size_t requested) {
apetushkov@9858:   if (used > 0) {
apetushkov@9858:     this->flush(used);
apetushkov@9858:   }
apetushkov@9858:   assert(this->used_size() == 0, "invariant");
apetushkov@9858:   if (this->available_size() >= requested) {
apetushkov@9858:     return true;
apetushkov@9858:   }
apetushkov@9858:   return StorageHost<Adapter, AP>::accommodate(0, requested);
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: inline void StreamWriterHost<Adapter, AP>::bytes(void* dest, const void* buf, size_t len) {
apetushkov@9858:   if (len > this->available_size()) {
apetushkov@9858:     this->write_unbuffered(buf, len);
apetushkov@9858:     return;
apetushkov@9858:   }
apetushkov@9858:   MemoryWriterHost<Adapter, AP>::bytes(dest, buf, len);
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: inline void StreamWriterHost<Adapter, AP>::flush(size_t size) {
apetushkov@9858:   assert(size > 0, "invariant");
apetushkov@9858:   assert(this->is_valid(), "invariant");
bulasevich@9947:   _stream_pos += os::write(_fd, this->start_pos(), (unsigned int)size);
apetushkov@9858:   StorageHost<Adapter, AP>::reset();
apetushkov@9858:   assert(0 == this->used_offset(), "invariant");
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: inline bool StreamWriterHost<Adapter, AP>::has_valid_fd() const {
apetushkov@9858:   return invalid_fd != _fd;
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
bulasevich@9947: inline int64_t StreamWriterHost<Adapter, AP>::current_offset() const {
apetushkov@9858:   return current_stream_position();
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
bulasevich@9947: void StreamWriterHost<Adapter, AP>::seek(int64_t offset) {
apetushkov@9858:   this->flush();
apetushkov@9858:   assert(0 == this->used_offset(), "can only seek from beginning");
apetushkov@9858:   _stream_pos = os::seek_to_file_offset(_fd, offset);
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: void StreamWriterHost<Adapter, AP>::flush() {
apetushkov@9858:   if (this->is_valid()) {
apetushkov@9858:     const size_t used = this->used_size();
apetushkov@9858:     if (used > 0) {
apetushkov@9858:       this->flush(used);
apetushkov@9858:     }
apetushkov@9858:   }
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: void StreamWriterHost<Adapter, AP>::write_unbuffered(const void* buf, size_t len) {
apetushkov@9858:   this->flush();
apetushkov@9858:   assert(0 == this->used_offset(), "can only seek from beginning");
apetushkov@9858:   while (len > 0) {
bulasevich@9947:     const unsigned int n = MIN2((unsigned int)len, (unsigned int)INT_MAX);
apetushkov@9858:     _stream_pos += os::write(_fd, buf, n);
apetushkov@9858:     len -= n;
apetushkov@9858:   }
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: inline bool StreamWriterHost<Adapter, AP>::is_valid() const {
apetushkov@9858:   return has_valid_fd();
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: inline void StreamWriterHost<Adapter, AP>::close_fd() {
apetushkov@9858:   assert(this->has_valid_fd(), "closing invalid fd!");
apetushkov@9858:   os::close(_fd);
apetushkov@9858:   _fd = invalid_fd;
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: template <typename Adapter, typename AP>
apetushkov@9858: inline void StreamWriterHost<Adapter, AP>::reset(fio_fd fd) {
apetushkov@9858:   assert(!this->has_valid_fd(), "invariant");
apetushkov@9858:   _fd = fd;
apetushkov@9858:   _stream_pos = 0;
apetushkov@9858:   this->hard_reset();
apetushkov@9858: }
apetushkov@9858: 
apetushkov@9858: #endif // SHARE_VM_JFR_WRITERS_JFRSTREAMWRITERHOST_INLINE_HPP