logging.h revision 5821806d5e7f356e8fa4b058a389a808ea183019
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)// This file contains #include information about logging-related stuff. 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Pretty much everybody needs to #include this file so that they can 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// log various happenings. 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef _LOGGING_H_ 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define _LOGGING_H_ 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <config.h> 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdarg.h> 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdlib.h> 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdio.h> 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef HAVE_UNISTD_H 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <unistd.h> // for write() 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string.h> // for strlen(), strcmp() 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <assert.h> 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <errno.h> // for errno 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/abort.h" 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/commandlineflags.h" 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// On some systems (like freebsd), we can't call write() at all in a 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// global constructor, perhaps because errno hasn't been set up. 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// (In windows, we can't call it because it might call malloc.) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Calling the write syscall is safer (it doesn't set errno), so we 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// prefer that. Note we don't care about errno for logging: we just 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// do logging on a best-effort basis. 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(_MSC_VER) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define WRITE_TO_STDERR(buf, len) WriteToStderr(buf, len); // in port.cc 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#elif defined(HAVE_SYS_SYSCALL_H) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <sys/syscall.h> 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define WRITE_TO_STDERR(buf, len) syscall(SYS_write, STDERR_FILENO, buf, len) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define WRITE_TO_STDERR(buf, len) write(STDERR_FILENO, buf, len) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// MSVC and mingw define their own, safe version of vnsprintf (the 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// windows one in broken) in port.cc. Everyone else can use the 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// version here. We had to give it a unique name for windows. 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef _WIN32 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define perftools_vsnprintf vsnprintf 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// We log all messages at this log-level and below. 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// INFO == -1, WARNING == -2, ERROR == -3, FATAL == -4 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)DECLARE_int32(verbose); 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// CHECK dies with a fatal error if condition is not true. It is *not* 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// controlled by NDEBUG, so the check will be executed regardless of 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// compilation mode. Therefore, it is safe to do things like: 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// CHECK(fp->Write(x) == 4) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Note we use write instead of printf/puts to avoid the risk we'll 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// call malloc(). 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CHECK(condition) \ 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) do { \ 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!(condition)) { \ 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WRITE_TO_STDERR("Check failed: " #condition "\n", \ 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sizeof("Check failed: " #condition "\n")-1); \ 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tcmalloc::Abort(); \ 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } \ 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } while (0) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This takes a message to print. The name is historical. 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define RAW_CHECK(condition, message) \ 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) do { \ 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!(condition)) { \ 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WRITE_TO_STDERR("Check failed: " #condition ": " message "\n", \ 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sizeof("Check failed: " #condition ": " message "\n")-1);\ 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tcmalloc::Abort(); \ 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } \ 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } while (0) 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This is like RAW_CHECK, but only in debug-mode 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef NDEBUG 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum { DEBUG_MODE = 0 }; 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define RAW_DCHECK(condition, message) 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum { DEBUG_MODE = 1 }; 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define RAW_DCHECK(condition, message) RAW_CHECK(condition, message) 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This prints errno as well. Note we use write instead of printf/puts to 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// avoid the risk we'll call malloc(). 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PCHECK(condition) \ 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) do { \ 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!(condition)) { \ 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const int err_no = errno; \ 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WRITE_TO_STDERR("Check failed: " #condition ": ", \ 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sizeof("Check failed: " #condition ": ")-1); \ 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WRITE_TO_STDERR(strerror(err_no), strlen(strerror(err_no))); \ 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WRITE_TO_STDERR("\n", sizeof("\n")-1); \ 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tcmalloc::Abort(); \ 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } \ 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } while (0) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Helper macro for binary operators; prints the two values on error 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Don't use this macro directly in your code, use CHECK_EQ et al below 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// WARNING: These don't compile correctly if one of the arguments is a pointer 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// and the other is NULL. To work around this, simply static_cast NULL to the 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// type of the desired pointer. 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// TODO(jandrews): Also print the values in case of failure. Requires some 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// sort of type-sensitive ToString() function. 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CHECK_OP(op, val1, val2) \ 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) do { \ 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!((val1) op (val2))) { \ 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fprintf(stderr, "Check failed: %s %s %s\n", #val1, #op, #val2); \ 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tcmalloc::Abort(); \ 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } \ 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } while (0) 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CHECK_EQ(val1, val2) CHECK_OP(==, val1, val2) 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CHECK_NE(val1, val2) CHECK_OP(!=, val1, val2) 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CHECK_LE(val1, val2) CHECK_OP(<=, val1, val2) 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CHECK_LT(val1, val2) CHECK_OP(< , val1, val2) 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CHECK_GE(val1, val2) CHECK_OP(>=, val1, val2) 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CHECK_GT(val1, val2) CHECK_OP(> , val1, val2) 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Synonyms for CHECK_* that are used in some unittests. 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define EXPECT_EQ(val1, val2) CHECK_EQ(val1, val2) 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define EXPECT_NE(val1, val2) CHECK_NE(val1, val2) 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define EXPECT_LE(val1, val2) CHECK_LE(val1, val2) 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define EXPECT_LT(val1, val2) CHECK_LT(val1, val2) 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define EXPECT_GE(val1, val2) CHECK_GE(val1, val2) 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define EXPECT_GT(val1, val2) CHECK_GT(val1, val2) 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ASSERT_EQ(val1, val2) EXPECT_EQ(val1, val2) 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ASSERT_NE(val1, val2) EXPECT_NE(val1, val2) 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ASSERT_LE(val1, val2) EXPECT_LE(val1, val2) 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ASSERT_LT(val1, val2) EXPECT_LT(val1, val2) 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ASSERT_GE(val1, val2) EXPECT_GE(val1, val2) 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ASSERT_GT(val1, val2) EXPECT_GT(val1, val2) 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// As are these variants. 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define EXPECT_TRUE(cond) CHECK(cond) 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define EXPECT_FALSE(cond) CHECK(!(cond)) 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define EXPECT_STREQ(a, b) CHECK(strcmp(a, b) == 0) 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ASSERT_TRUE(cond) EXPECT_TRUE(cond) 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ASSERT_FALSE(cond) EXPECT_FALSE(cond) 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ASSERT_STREQ(a, b) EXPECT_STREQ(a, b) 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Used for (libc) functions that return -1 and set errno 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CHECK_ERR(invocation) PCHECK((invocation) != -1) 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// A few more checks that only happen in debug mode 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef NDEBUG 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_EQ(val1, val2) 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_NE(val1, val2) 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_LE(val1, val2) 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_LT(val1, val2) 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_GE(val1, val2) 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_GT(val1, val2) 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_EQ(val1, val2) CHECK_EQ(val1, val2) 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_NE(val1, val2) CHECK_NE(val1, val2) 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_LE(val1, val2) CHECK_LE(val1, val2) 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_LT(val1, val2) CHECK_LT(val1, val2) 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_GE(val1, val2) CHECK_GE(val1, val2) 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DCHECK_GT(val1, val2) CHECK_GT(val1, val2) 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef ERROR 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef ERROR // may conflict with ERROR macro on windows 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum LogSeverity {INFO = -1, WARNING = -2, ERROR = -3, FATAL = -4}; 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// NOTE: we add a newline to the end of the output if it's not there already 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline void LogPrintf(int severity, const char* pat, va_list ap) { 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We write directly to the stderr file descriptor and avoid FILE 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffering because that may invoke malloc() 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char buf[1600]; 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) perftools_vsnprintf(buf, sizeof(buf)-1, pat, ap); 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (buf[0] != '\0' && buf[strlen(buf)-1] != '\n') { 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(strlen(buf)+1 < sizeof(buf)); 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) strcat(buf, "\n"); 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WRITE_TO_STDERR(buf, strlen(buf)); 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((severity) == FATAL) { 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // LOG(FATAL) indicates a big problem, so don't run atexit() calls 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tcmalloc::Abort(); 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Note that since the order of global constructors is unspecified, 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// global code that calls RAW_LOG may execute before FLAGS_verbose is set. 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Such code will run with verbosity == 0 no matter what. 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define VLOG_IS_ON(severity) (FLAGS_verbose >= severity) 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// In a better world, we'd use __VA_ARGS__, but VC++ 7 doesn't support it. 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define LOG_PRINTF(severity, pat) do { \ 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (VLOG_IS_ON(severity)) { \ 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) va_list ap; \ 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) va_start(ap, pat); \ 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LogPrintf(severity, pat, ap); \ 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) va_end(ap); \ 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } \ 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} while (0) 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// RAW_LOG is the main function; some synonyms are used in unittests. 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline void RAW_LOG(int lvl, const char* pat, ...) { LOG_PRINTF(lvl, pat); } 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline void RAW_VLOG(int lvl, const char* pat, ...) { LOG_PRINTF(lvl, pat); } 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline void LOG(int lvl, const char* pat, ...) { LOG_PRINTF(lvl, pat); } 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline void VLOG(int lvl, const char* pat, ...) { LOG_PRINTF(lvl, pat); } 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline void LOG_IF(int lvl, bool cond, const char* pat, ...) { 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (cond) LOG_PRINTF(lvl, pat); 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This isn't technically logging, but it's also IO and also is an 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// attempt to be "raw" -- that is, to not use any higher-level libc 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// routines that might allocate memory or (ideally) try to allocate 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// locks. We use an opaque file handle (not necessarily an int) 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// to allow even more low-level stuff in the future. 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Like other "raw" routines, these functions are best effort, and 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// thus don't return error codes (except RawOpenForWriting()). 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(_WIN32) || defined(__CYGWIN__) || defined(__CYGWIN32__) 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef NOMINMAX 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define NOMINMAX // @#!$& windows 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <windows.h> 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef HANDLE RawFD; 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const RawFD kIllegalRawFD = INVALID_HANDLE_VALUE; 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef int RawFD; 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const RawFD kIllegalRawFD = -1; // what open returns if it fails 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // defined(_WIN32) || defined(__CYGWIN__) || defined(__CYGWIN32__) 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)RawFD RawOpenForWriting(const char* filename); // uses default permissions 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void RawWrite(RawFD fd, const char* buf, size_t len); 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void RawClose(RawFD fd); 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // _LOGGING_H_ 262