1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 // Make sure <iostream> is not included directly or indirectly. You 30 // can include <ostream> and/or <istream> just fine but <iostream> 31 // contains forward declarations for cout, cerr... that will conflict 32 // with the ones below. 33 #include <ostream> 34 #include <stdio_filebuf.h> 35 36 namespace std { 37 38 // Global instances of cout and cerr. Here we reserve the memory for 39 // the stdio filebuf. The first time ios_base::Init::Init() is called, 40 // placement new is used to initialize these areas with proper 41 // instances of the streams. 42 // 43 // - cout and cerr are mandated by the standard. 44 // - stdio_filebuf_cout and stdio_filebuf_cerr are our own stdio and 45 // stderr streambuf implementation used to build the cout and cerr 46 // ostreams. (see ios_base::Init::Init()) 47 48 typedef char stdio_filebuf_mem[sizeof(android::stdio_filebuf)] 49 __attribute__ ((aligned(__alignof__(android::stdio_filebuf)))); 50 stdio_filebuf_mem stdio_filebuf_cout; 51 stdio_filebuf_mem stdio_filebuf_cerr; 52 53 typedef char ostream_mem[sizeof(ostream)] 54 __attribute__ ((aligned(__alignof__(ostream)))); 55 ostream_mem cout; 56 ostream_mem cerr; 57 58 } // namespace std 59