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// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_BASE_LOGGING_H_
#define V8_BASE_LOGGING_H_
#include <stdint.h>
#include <string.h>
#include "src/base/build_config.h"
extern "C" void V8_Fatal(const char* file, int line, const char* format, ...);
// The FATAL, UNREACHABLE and UNIMPLEMENTED macros are useful during
// development, but they should not be relied on in the final product.
#ifdef DEBUG
#define FATAL(msg) \
V8_Fatal(__FILE__, __LINE__, "%s", (msg))
#define UNIMPLEMENTED() \
V8_Fatal(__FILE__, __LINE__, "unimplemented code")
#define UNREACHABLE() \
V8_Fatal(__FILE__, __LINE__, "unreachable code")
#else
#define FATAL(msg) \
V8_Fatal("", 0, "%s", (msg))
#define UNIMPLEMENTED() \
V8_Fatal("", 0, "unimplemented code")
#define UNREACHABLE() ((void) 0)
#endif
// The CHECK macro checks that the given condition is true; if not, it
// prints a message to stderr and aborts.
#define CHECK(condition) do { \
if (!(condition)) { \
V8_Fatal(__FILE__, __LINE__, "CHECK(%s) failed", #condition); \
} \
} while (0)
// Helper function used by the CHECK_EQ function when given int
// arguments. Should not be called directly.
inline void CheckEqualsHelper(const char* file, int line,
const char* expected_source, int expected,
const char* value_source, int value) {
if (expected != value) {
V8_Fatal(file, line,
"CHECK_EQ(%s, %s) failed\n# Expected: %i\n# Found: %i",
expected_source, value_source, expected, value);
}
}
// Helper function used by the CHECK_EQ function when given int64_t
// arguments. Should not be called directly.
inline void CheckEqualsHelper(const char* file, int line,
const char* expected_source,
int64_t expected,
const char* value_source,
int64_t value) {
if (expected != value) {
// Print int64_t values in hex, as two int32s,
// to avoid platform-dependencies.
V8_Fatal(file, line,
"CHECK_EQ(%s, %s) failed\n#"
" Expected: 0x%08x%08x\n# Found: 0x%08x%08x",
expected_source, value_source,
static_cast<uint32_t>(expected >> 32),
static_cast<uint32_t>(expected),
static_cast<uint32_t>(value >> 32),
static_cast<uint32_t>(value));
}
}
// Helper function used by the CHECK_NE function when given int
// arguments. Should not be called directly.
inline void CheckNonEqualsHelper(const char* file,
int line,
const char* unexpected_source,
int unexpected,
const char* value_source,
int value) {
if (unexpected == value) {
V8_Fatal(file, line, "CHECK_NE(%s, %s) failed\n# Value: %i",
unexpected_source, value_source, value);
}
}
// Helper function used by the CHECK function when given string
// arguments. Should not be called directly.
inline void CheckEqualsHelper(const char* file,
int line,
const char* expected_source,
const char* expected,
const char* value_source,
const char* value) {
if ((expected == NULL && value != NULL) ||
(expected != NULL && value == NULL) ||
(expected != NULL && value != NULL && strcmp(expected, value) != 0)) {
V8_Fatal(file, line,
"CHECK_EQ(%s, %s) failed\n# Expected: %s\n# Found: %s",
expected_source, value_source, expected, value);
}
}
inline void CheckNonEqualsHelper(const char* file,
int line,
const char* expected_source,
const char* expected,
const char* value_source,
const char* value) {
if (expected == value ||
(expected != NULL && value != NULL && strcmp(expected, value) == 0)) {
V8_Fatal(file, line, "CHECK_NE(%s, %s) failed\n# Value: %s",
expected_source, value_source, value);
}
}
// Helper function used by the CHECK function when given pointer
// arguments. Should not be called directly.
inline void CheckEqualsHelper(const char* file,
int line,
const char* expected_source,
const void* expected,
const char* value_source,
const void* value) {
if (expected != value) {
V8_Fatal(file, line,
"CHECK_EQ(%s, %s) failed\n# Expected: %p\n# Found: %p",
expected_source, value_source,
expected, value);
}
}
inline void CheckNonEqualsHelper(const char* file,
int line,
const char* expected_source,
const void* expected,
const char* value_source,
const void* value) {
if (expected == value) {
V8_Fatal(file, line, "CHECK_NE(%s, %s) failed\n# Value: %p",
expected_source, value_source, value);
}
}
inline void CheckNonEqualsHelper(const char* file,
int line,
const char* expected_source,
int64_t expected,
const char* value_source,
int64_t value) {
if (expected == value) {
V8_Fatal(file, line,
"CHECK_EQ(%s, %s) failed\n# Expected: %f\n# Found: %f",
expected_source, value_source, expected, value);
}
}
#define CHECK_EQ(expected, value) CheckEqualsHelper(__FILE__, __LINE__, \
#expected, expected, #value, value)
#define CHECK_NE(unexpected, value) CheckNonEqualsHelper(__FILE__, __LINE__, \
#unexpected, unexpected, #value, value)
#define CHECK_GT(a, b) CHECK((a) > (b))
#define CHECK_GE(a, b) CHECK((a) >= (b))
#define CHECK_LT(a, b) CHECK((a) < (b))
#define CHECK_LE(a, b) CHECK((a) <= (b))
namespace v8 {
namespace base {
// Exposed for making debugging easier (to see where your function is being
// called, just add a call to DumpBacktrace).
void DumpBacktrace();
} } // namespace v8::base
// The DCHECK macro is equivalent to CHECK except that it only
// generates code in debug builds.
#ifdef DEBUG
#define DCHECK_RESULT(expr) CHECK(expr)
#define DCHECK(condition) CHECK(condition)
#define DCHECK_EQ(v1, v2) CHECK_EQ(v1, v2)
#define DCHECK_NE(v1, v2) CHECK_NE(v1, v2)
#define DCHECK_GE(v1, v2) CHECK_GE(v1, v2)
#define DCHECK_LT(v1, v2) CHECK_LT(v1, v2)
#define DCHECK_LE(v1, v2) CHECK_LE(v1, v2)
#else
#define DCHECK_RESULT(expr) (expr)
#define DCHECK(condition) ((void) 0)
#define DCHECK_EQ(v1, v2) ((void) 0)
#define DCHECK_NE(v1, v2) ((void) 0)
#define DCHECK_GE(v1, v2) ((void) 0)
#define DCHECK_LT(v1, v2) ((void) 0)
#define DCHECK_LE(v1, v2) ((void) 0)
#endif
#define DCHECK_NOT_NULL(p) DCHECK_NE(NULL, p)
// "Extra checks" are lightweight checks that are enabled in some release
// builds.
#ifdef ENABLE_EXTRA_CHECKS
#define EXTRA_CHECK(condition) CHECK(condition)
#else
#define EXTRA_CHECK(condition) ((void) 0)
#endif
#endif // V8_BASE_LOGGING_H_
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