Fri, 16 Aug 2013 10:06:58 -0700
Merge
duke@435 | 1 | /* |
stefank@2314 | 2 | * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #ifndef SHARE_VM_UTILITIES_DEFAULTSTREAM_HPP |
stefank@2314 | 26 | #define SHARE_VM_UTILITIES_DEFAULTSTREAM_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | #include "utilities/xmlstream.hpp" |
stefank@2314 | 29 | |
duke@435 | 30 | class defaultStream : public xmlTextStream { |
duke@435 | 31 | friend void ostream_abort(); |
duke@435 | 32 | public: |
duke@435 | 33 | enum { NO_WRITER = -1 }; |
duke@435 | 34 | private: |
duke@435 | 35 | bool _inited; |
duke@435 | 36 | fileStream* _log_file; // XML-formatted file shared by all threads |
duke@435 | 37 | static int _output_fd; |
duke@435 | 38 | static int _error_fd; |
duke@435 | 39 | static FILE* _output_stream; |
duke@435 | 40 | static FILE* _error_stream; |
duke@435 | 41 | |
duke@435 | 42 | void init(); |
duke@435 | 43 | void init_log(); |
duke@435 | 44 | void finish_log(); |
duke@435 | 45 | void finish_log_on_error(char *buf, int buflen); |
duke@435 | 46 | public: |
duke@435 | 47 | // must defer time stamp due to the fact that os::init() hasn't |
duke@435 | 48 | // yet been called and os::elapsed_counter() may not be valid |
duke@435 | 49 | defaultStream() { |
duke@435 | 50 | _log_file = NULL; |
duke@435 | 51 | _inited = false; |
duke@435 | 52 | _writer = -1; |
duke@435 | 53 | _last_writer = -1; |
duke@435 | 54 | } |
duke@435 | 55 | |
duke@435 | 56 | ~defaultStream() { |
duke@435 | 57 | if (has_log_file()) finish_log(); |
duke@435 | 58 | } |
duke@435 | 59 | |
duke@435 | 60 | static inline FILE* output_stream() { |
duke@435 | 61 | return DisplayVMOutputToStderr ? _error_stream : _output_stream; |
duke@435 | 62 | } |
duke@435 | 63 | static inline FILE* error_stream() { |
duke@435 | 64 | return DisplayVMOutputToStdout ? _output_stream : _error_stream; |
duke@435 | 65 | } |
duke@435 | 66 | static inline int output_fd() { |
duke@435 | 67 | return DisplayVMOutputToStderr ? _error_fd : _output_fd; |
duke@435 | 68 | } |
duke@435 | 69 | static inline int error_fd() { |
duke@435 | 70 | return DisplayVMOutputToStdout ? _output_fd : _error_fd; |
duke@435 | 71 | } |
duke@435 | 72 | |
duke@435 | 73 | virtual void write(const char* s, size_t len); |
duke@435 | 74 | |
duke@435 | 75 | void flush() { |
duke@435 | 76 | // once we can determine whether we are in a signal handler, we |
duke@435 | 77 | // should add the following assert here: |
duke@435 | 78 | // assert(xxxxxx, "can not flush buffer inside signal handler"); |
duke@435 | 79 | xmlTextStream::flush(); |
duke@435 | 80 | fflush(output_stream()); |
duke@435 | 81 | if (has_log_file()) _log_file->flush(); |
duke@435 | 82 | } |
duke@435 | 83 | |
duke@435 | 84 | // advisory lock/unlock of _writer field: |
duke@435 | 85 | private: |
duke@435 | 86 | intx _writer; // thread_id with current rights to output |
duke@435 | 87 | intx _last_writer; |
duke@435 | 88 | public: |
duke@435 | 89 | intx hold(intx writer_id); |
duke@435 | 90 | void release(intx holder); |
duke@435 | 91 | intx writer() { return _writer; } |
duke@435 | 92 | bool has_log_file(); |
duke@435 | 93 | |
duke@435 | 94 | static defaultStream* instance; // sole instance |
duke@435 | 95 | }; |
stefank@2314 | 96 | |
stefank@2314 | 97 | #endif // SHARE_VM_UTILITIES_DEFAULTSTREAM_HPP |