15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2005, Google Inc. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// All rights reserved. 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Redistribution and use in source and binary forms, with or without 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// modification, are permitted provided that the following conditions are 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// met: 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// * Redistributions of source code must retain the above copyright 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// notice, this list of conditions and the following disclaimer. 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// * Redistributions in binary form must reproduce the above 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// copyright notice, this list of conditions and the following disclaimer 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// in the documentation and/or other materials provided with the 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// distribution. 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// * Neither the name of Google Inc. nor the names of its 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// contributors may be used to endorse or promote products derived from 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// this software without specific prior written permission. 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// --- 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Sanjay Ghemawat <opensource@google.com> 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <config.h> 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "internal_logging.h" 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdarg.h> // for va_end, va_start 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdio.h> // for vsnprintf, va_list, etc 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdlib.h> // for abort 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string.h> // for strlen, memcpy 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef HAVE_UNISTD_H 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <unistd.h> // for write() 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <gperftools/malloc_extension.h> 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" // for perftools_vsnprintf 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/spinlock.h" // for SpinLockHolder, SpinLock 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const int kLogBufSize = 800; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Variables for storing crash output. Allocated statically since we 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// may not be able to heap-allocate while crashing. 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static SpinLock crash_lock(base::LINKER_INITIALIZED); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static bool crashed = false; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const int kStatsBufferSize = 16 << 10; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static char stats_buffer[kStatsBufferSize] = { 0 }; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace tcmalloc { 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void WriteMessage(const char* msg, int length) { 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) write(STDERR_FILENO, msg, length); 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void (*log_message_writer)(const char* msg, int length) = WriteMessage; 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Logger { 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool Add(const LogItem& item); 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool AddStr(const char* str, int n); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool AddNum(uint64_t num, int base); // base must be 10 or 16. 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const int kBufSize = 200; 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char* p_; 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char* end_; 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char buf_[kBufSize]; 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Log(LogMode mode, const char* filename, int line, 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LogItem a, LogItem b, LogItem c, LogItem d) { 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Logger state; 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) state.p_ = state.buf_; 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) state.end_ = state.buf_ + sizeof(state.buf_); 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) state.AddStr(filename, strlen(filename)) 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) && state.AddStr(":", 1) 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) && state.AddNum(line, 10) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) && state.AddStr("]", 1) 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) && state.Add(a) 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) && state.Add(b) 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) && state.Add(c) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) && state.Add(d); 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Teminate with newline 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (state.p_ >= state.end_) { 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) state.p_ = state.end_ - 1; 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *state.p_ = '\n'; 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) state.p_++; 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int msglen = state.p_ - state.buf_; 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (mode == kLog) { 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (*log_message_writer)(state.buf_, msglen); 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool first_crash = false; 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SpinLockHolder l(&crash_lock); 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!crashed) { 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) crashed = true; 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) first_crash = true; 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (*log_message_writer)(state.buf_, msglen); 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (first_crash && mode == kCrashWithStats) { 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MallocExtension::instance()->GetStats(stats_buffer, kStatsBufferSize); 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (*log_message_writer)(stats_buffer, strlen(stats_buffer)); 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) abort(); 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool Logger::Add(const LogItem& item) { 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Separate items with spaces 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (p_ < end_) { 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *p_ = ' '; 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) p_++; 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (item.tag_) { 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case LogItem::kStr: 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AddStr(item.u_.str, strlen(item.u_.str)); 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case LogItem::kUnsigned: 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AddNum(item.u_.unum, 10); 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case LogItem::kSigned: 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (item.u_.snum < 0) { 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The cast to uint64_t is intentionally before the negation 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // so that we do not attempt to negate -2^63. 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AddStr("-", 1) 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) && AddNum(- static_cast<uint64_t>(item.u_.snum), 10); 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AddNum(static_cast<uint64_t>(item.u_.snum), 10); 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case LogItem::kPtr: 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AddStr("0x", 2) 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) && AddNum(reinterpret_cast<uintptr_t>(item.u_.ptr), 16); 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool Logger::AddStr(const char* str, int n) { 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (end_ - p_ < n) { 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) memcpy(p_, str, n); 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) p_ += n; 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool Logger::AddNum(uint64_t num, int base) { 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const char kDigits[] = "0123456789abcdef"; 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char space[22]; // more than enough for 2^64 in smallest supported base (10) 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char* end = space + sizeof(space); 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char* pos = end; 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) do { 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pos--; 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *pos = kDigits[num % base]; 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) num /= base; 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } while (num > 0 && pos > space); 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AddStr(pos, end - pos); 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // end tcmalloc namespace 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void TCMalloc_Printer::printf(const char* format, ...) { 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (left_ > 0) { 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) va_list ap; 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) va_start(ap, format); 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const int r = perftools_vsnprintf(buf_, left_, format, ap); 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) va_end(ap); 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (r < 0) { 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Perhaps an old glibc that returns -1 on truncation? 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) left_ = 0; 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (r > left_) { 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Truncation 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) left_ = 0; 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) left_ -= r; 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buf_ += r; 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 194