91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
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/*
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* Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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class defaultStream : public xmlTextStream {
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friend void ostream_abort();
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public:
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enum { NO_WRITER = -1 };
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private:
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bool _inited;
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fileStream* _log_file; // XML-formatted file shared by all threads
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static int _output_fd;
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static int _error_fd;
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static FILE* _output_stream;
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static FILE* _error_stream;
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void init();
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void init_log();
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void finish_log();
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void finish_log_on_error(char *buf, int buflen);
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public:
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// must defer time stamp due to the fact that os::init() hasn't
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// yet been called and os::elapsed_counter() may not be valid
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defaultStream() {
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_log_file = NULL;
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_inited = false;
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_writer = -1;
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_last_writer = -1;
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}
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~defaultStream() {
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if (has_log_file()) finish_log();
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}
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static inline FILE* output_stream() {
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return DisplayVMOutputToStderr ? _error_stream : _output_stream;
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}
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static inline FILE* error_stream() {
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return DisplayVMOutputToStdout ? _output_stream : _error_stream;
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}
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static inline int output_fd() {
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return DisplayVMOutputToStderr ? _error_fd : _output_fd;
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}
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static inline int error_fd() {
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return DisplayVMOutputToStdout ? _output_fd : _error_fd;
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}
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virtual void write(const char* s, size_t len);
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void flush() {
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// once we can determine whether we are in a signal handler, we
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// should add the following assert here:
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// assert(xxxxxx, "can not flush buffer inside signal handler");
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xmlTextStream::flush();
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fflush(output_stream());
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if (has_log_file()) _log_file->flush();
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}
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// advisory lock/unlock of _writer field:
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private:
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intx _writer; // thread_id with current rights to output
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intx _last_writer;
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public:
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intx hold(intx writer_id);
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void release(intx holder);
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intx writer() { return _writer; }
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bool has_log_file();
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static defaultStream* instance; // sole instance
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};
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