Mercurial > hg > truffle
view src/share/vm/utilities/defaultStream.hpp @ 690:d142f1feeed5
Merge
author | acorn |
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date | Sun, 29 Mar 2009 18:19:05 -0400 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2003-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ class defaultStream : public xmlTextStream { friend void ostream_abort(); public: enum { NO_WRITER = -1 }; private: bool _inited; fileStream* _log_file; // XML-formatted file shared by all threads static int _output_fd; static int _error_fd; static FILE* _output_stream; static FILE* _error_stream; void init(); void init_log(); void finish_log(); void finish_log_on_error(char *buf, int buflen); public: // must defer time stamp due to the fact that os::init() hasn't // yet been called and os::elapsed_counter() may not be valid defaultStream() { _log_file = NULL; _inited = false; _writer = -1; _last_writer = -1; } ~defaultStream() { if (has_log_file()) finish_log(); } static inline FILE* output_stream() { return DisplayVMOutputToStderr ? _error_stream : _output_stream; } static inline FILE* error_stream() { return DisplayVMOutputToStdout ? _output_stream : _error_stream; } static inline int output_fd() { return DisplayVMOutputToStderr ? _error_fd : _output_fd; } static inline int error_fd() { return DisplayVMOutputToStdout ? _output_fd : _error_fd; } virtual void write(const char* s, size_t len); void flush() { // once we can determine whether we are in a signal handler, we // should add the following assert here: // assert(xxxxxx, "can not flush buffer inside signal handler"); xmlTextStream::flush(); fflush(output_stream()); if (has_log_file()) _log_file->flush(); } // advisory lock/unlock of _writer field: private: intx _writer; // thread_id with current rights to output intx _last_writer; public: intx hold(intx writer_id); void release(intx holder); intx writer() { return _writer; } bool has_log_file(); static defaultStream* instance; // sole instance };