/*
 * Copyright (c) 2016, 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_LOGGING_LOGSTREAM_HPP
#define SHARE_VM_LOGGING_LOGSTREAM_HPP

#include "utilities/ostream.hpp"

// An output stream that logs to the logging framework.
// Requires a ResourceMark on the stack.
class LogStreamNoResourceMark : public outputStream {
private:
  stringStream _current_line;
  void (*_log_func)(const char* fmt, va_list args) ATTRIBUTE_PRINTF(1, 0);

  void print(const char* fmt, ...) ATTRIBUTE_PRINTF(2, 3);

public:
  LogStreamNoResourceMark(void (*log_func)(const char* fmt, va_list args)) : _log_func(log_func) {}
  ~LogStreamNoResourceMark() {
    guarantee(_current_line.size() == 0, "Buffer not flushed. Missing call to print_cr()?");
  }

  void write(const char* s, size_t len);
};

#endif // SHARE_VM_LOGGING_LOGSTREAM_HPP