00001 // Copyright (c) 2005, Google Inc. 00002 // All rights reserved. 00003 // 00004 // Redistribution and use in source and binary forms, with or without 00005 // modification, are permitted provided that the following conditions are 00006 // met: 00007 // 00008 // * Redistributions of source code must retain the above copyright 00009 // notice, this list of conditions and the following disclaimer. 00010 // * Redistributions in binary form must reproduce the above 00011 // copyright notice, this list of conditions and the following disclaimer 00012 // in the documentation and/or other materials provided with the 00013 // distribution. 00014 // * Neither the name of Google Inc. nor the names of its 00015 // contributors may be used to endorse or promote products derived from 00016 // this software without specific prior written permission. 00017 // 00018 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00019 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00020 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00021 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00022 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00023 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00024 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00025 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00026 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00027 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00028 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00029 00030 // --- 00031 // Sanjay Ghemawat <opensource@google.com> 00032 00033 #include "config.h" 00034 #include <stdio.h> 00035 #include <stdarg.h> 00036 #ifdef HAVE_UNISTD_H 00037 #include <unistd.h> // for write() 00038 #endif 00039 #include <string.h> 00040 #include "internal_logging.h" 00041 00042 void TCMalloc_MESSAGE(const char* format, ...) { 00043 va_list ap; 00044 va_start(ap, format); 00045 char buf[800]; 00046 vsnprintf(buf, sizeof(buf), format, ap); 00047 va_end(ap); 00048 write(STDERR_FILENO, buf, strlen(buf)); 00049 } 00050 00051 void TCMalloc_Printer::printf(const char* format, ...) { 00052 if (left_ > 0) { 00053 va_list ap; 00054 va_start(ap, format); 00055 const int r = vsnprintf(buf_, left_, format, ap); 00056 va_end(ap); 00057 if (r < 0) { 00058 // Perhaps an old glibc that returns -1 on truncation? 00059 left_ = 0; 00060 } else if (r > left_) { 00061 // Truncation 00062 left_ = 0; 00063 } else { 00064 left_ -= r; 00065 buf_ += r; 00066 } 00067 } 00068 }