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#pragma once
// Copyright (c) 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// ---
// This file contains #include information about logging-related stuff.
// Pretty much everybody needs to #include this file so that they can
// log various happenings.
//
#ifndef _LOGGING_H_
#define _LOGGING_H_
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#define WRITE_TO_STDERR(buf, len) write(STDERR_FILENO, buf, len)
#define CHECK(condition) \
do { \
if (!(condition)) { \
WRITE_TO_STDERR("Check failed: " #condition "\n", \
sizeof("Check failed: " #condition "\n")-1); \
abort(); \
} \
} while (0)
// This takes a message to print. The name is historical.
#define RAW_CHECK(condition, message) \
do { \
if (!(condition)) { \
WRITE_TO_STDERR("Check failed: " #condition ": " message "\n", \
sizeof("Check failed: " #condition ": " message "\n")-1);\
abort(); \
} \
} while (0)
// This is like RAW_CHECK, but only in debug-mode
#ifdef NDEBUG
enum { DEBUG_MODE = 0 };
#define RAW_DCHECK(condition, message)
#else
enum { DEBUG_MODE = 1 };
#define RAW_DCHECK(condition, message) RAW_CHECK(condition, message)
#endif
// This prints errno as well. Note we use write instead of printf/puts to
// avoid the risk we'll call malloc().
#define PCHECK(condition) \
do { \
if (!(condition)) { \
const int err_no = errno; \
WRITE_TO_STDERR("Check failed: " #condition ": ", \
sizeof("Check failed: " #condition ": ")-1); \
WRITE_TO_STDERR(strerror(err_no), strlen(strerror(err_no))); \
WRITE_TO_STDERR("\n", sizeof("\n")-1); \
abort(); \
} \
} while (0)
// Helper macro for binary operators; prints the two values on error
// Don't use this macro directly in your code, use CHECK_EQ et al below
// WARNING: These don't compile correctly if one of the arguments is a pointer
// and the other is NULL. To work around this, simply static_cast NULL to the
// type of the desired pointer.
// TODO(jandrews): Also print the values in case of failure. Requires some
// sort of type-sensitive ToString() function.
#define CHECK_OP(op, val1, val2) \
do { \
if (!((val1) op (val2))) { \
fprintf(stderr, "Check failed: %s %s %s\n", #val1, #op, #val2); \
abort(); \
} \
} while (0)
#define CHECK_EQ(val1, val2) CHECK_OP(==, val1, val2)
#define CHECK_NE(val1, val2) CHECK_OP(!=, val1, val2)
#define CHECK_LE(val1, val2) CHECK_OP(<=, val1, val2)
#define CHECK_LT(val1, val2) CHECK_OP(< , val1, val2)
#define CHECK_GE(val1, val2) CHECK_OP(>=, val1, val2)
#define CHECK_GT(val1, val2) CHECK_OP(> , val1, val2)
// Synonyms for CHECK_* that are used in some unittests.
#define EXPECT_EQ(val1, val2) CHECK_EQ(val1, val2)
#define EXPECT_NE(val1, val2) CHECK_NE(val1, val2)
#define EXPECT_LE(val1, val2) CHECK_LE(val1, val2)
#define EXPECT_LT(val1, val2) CHECK_LT(val1, val2)
#define EXPECT_GE(val1, val2) CHECK_GE(val1, val2)
#define EXPECT_GT(val1, val2) CHECK_GT(val1, val2)
#define ASSERT_EQ(val1, val2) EXPECT_EQ(val1, val2)
#define ASSERT_NE(val1, val2) EXPECT_NE(val1, val2)
#define ASSERT_LE(val1, val2) EXPECT_LE(val1, val2)
#define ASSERT_LT(val1, val2) EXPECT_LT(val1, val2)
#define ASSERT_GE(val1, val2) EXPECT_GE(val1, val2)
#define ASSERT_GT(val1, val2) EXPECT_GT(val1, val2)
// As are these variants.
#define EXPECT_TRUE(cond) CHECK(cond)
#define EXPECT_FALSE(cond) CHECK(!(cond))
#define EXPECT_STREQ(a, b) CHECK(strcmp(a, b) == 0)
#define ASSERT_TRUE(cond) EXPECT_TRUE(cond)
#define ASSERT_FALSE(cond) EXPECT_FALSE(cond)
#define ASSERT_STREQ(a, b) EXPECT_STREQ(a, b)
// Used for (libc) functions that return -1 and set errno
#define CHECK_ERR(invocation) PCHECK((invocation) != -1)
// A few more checks that only happen in debug mode
#ifdef NDEBUG
#define DCHECK_EQ(val1, val2)
#define DCHECK_NE(val1, val2)
#define DCHECK_LE(val1, val2)
#define DCHECK_LT(val1, val2)
#define DCHECK_GE(val1, val2)
#define DCHECK_GT(val1, val2)
#else
#define DCHECK_EQ(val1, val2) CHECK_EQ(val1, val2)
#define DCHECK_NE(val1, val2) CHECK_NE(val1, val2)
#define DCHECK_LE(val1, val2) CHECK_LE(val1, val2)
#define DCHECK_LT(val1, val2) CHECK_LT(val1, val2)
#define DCHECK_GE(val1, val2) CHECK_GE(val1, val2)
#define DCHECK_GT(val1, val2) CHECK_GT(val1, val2)
#endif
#endif // _LOGGING_H_
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