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//===-- internal_defs.h -----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef SCUDO_INTERNAL_DEFS_H_
#define SCUDO_INTERNAL_DEFS_H_
#include "platform.h"
#include <stdint.h>
#ifndef SCUDO_DEBUG
#define SCUDO_DEBUG 0
#endif
#define ARRAY_SIZE(A) (sizeof(A) / sizeof((A)[0]))
// String related macros.
#define STRINGIFY_(S) #S
#define STRINGIFY(S) STRINGIFY_(S)
#define CONCATENATE_(S, C) S##C
#define CONCATENATE(S, C) CONCATENATE_(S, C)
// Attributes & builtins related macros.
#define INTERFACE __attribute__((visibility("default")))
#define WEAK __attribute__((weak))
#define INLINE inline
#define ALWAYS_INLINE inline __attribute__((always_inline))
#define ALIAS(X) __attribute__((alias(X)))
// Please only use the ALIGNED macro before the type. Using ALIGNED after the
// variable declaration is not portable.
#define ALIGNED(X) __attribute__((aligned(X)))
#define FORMAT(F, A) __attribute__((format(printf, F, A)))
#define NOINLINE __attribute__((noinline))
#define NORETURN __attribute__((noreturn))
#define THREADLOCAL __thread
#define LIKELY(X) __builtin_expect(!!(X), 1)
#define UNLIKELY(X) __builtin_expect(!!(X), 0)
#if defined(__i386__) || defined(__x86_64__)
// __builtin_prefetch(X) generates prefetchnt0 on x86
#define PREFETCH(X) __asm__("prefetchnta (%0)" : : "r"(X))
#else
#define PREFETCH(X) __builtin_prefetch(X)
#endif
#define UNUSED __attribute__((unused))
#define USED __attribute__((used))
#define NOEXCEPT noexcept
namespace scudo {
typedef unsigned long uptr;
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
typedef unsigned long long u64;
typedef signed long sptr;
typedef signed char s8;
typedef signed short s16;
typedef signed int s32;
typedef signed long long s64;
// The following two functions have platform specific implementations.
void outputRaw(const char *Buffer);
void NORETURN die();
#define RAW_CHECK_MSG(Expr, Msg) \
do { \
if (UNLIKELY(!(Expr))) { \
outputRaw(Msg); \
die(); \
} \
} while (false)
#define RAW_CHECK(Expr) RAW_CHECK_MSG(Expr, #Expr)
void NORETURN reportCheckFailed(const char *File, int Line,
const char *Condition, u64 Value1, u64 Value2);
#define CHECK_IMPL(C1, Op, C2) \
do { \
u64 V1 = (u64)(C1); \
u64 V2 = (u64)(C2); \
if (UNLIKELY(!(V1 Op V2))) { \
reportCheckFailed(__FILE__, __LINE__, "(" #C1 ") " #Op " (" #C2 ")", V1, \
V2); \
die(); \
} \
} while (false)
#define CHECK(A) CHECK_IMPL((A), !=, 0)
#define CHECK_EQ(A, B) CHECK_IMPL((A), ==, (B))
#define CHECK_NE(A, B) CHECK_IMPL((A), !=, (B))
#define CHECK_LT(A, B) CHECK_IMPL((A), <, (B))
#define CHECK_LE(A, B) CHECK_IMPL((A), <=, (B))
#define CHECK_GT(A, B) CHECK_IMPL((A), >, (B))
#define CHECK_GE(A, B) CHECK_IMPL((A), >=, (B))
#if SCUDO_DEBUG
#define DCHECK(A) CHECK(A)
#define DCHECK_EQ(A, B) CHECK_EQ(A, B)
#define DCHECK_NE(A, B) CHECK_NE(A, B)
#define DCHECK_LT(A, B) CHECK_LT(A, B)
#define DCHECK_LE(A, B) CHECK_LE(A, B)
#define DCHECK_GT(A, B) CHECK_GT(A, B)
#define DCHECK_GE(A, B) CHECK_GE(A, B)
#else
#define DCHECK(A)
#define DCHECK_EQ(A, B)
#define DCHECK_NE(A, B)
#define DCHECK_LT(A, B)
#define DCHECK_LE(A, B)
#define DCHECK_GT(A, B)
#define DCHECK_GE(A, B)
#endif
// The superfluous die() call effectively makes this macro NORETURN.
#define UNREACHABLE(Msg) \
do { \
CHECK(0 && Msg); \
die(); \
} while (0)
#define COMPILER_CHECK(Pred) static_assert(Pred, "")
} // namespace scudo
#endif // SCUDO_INTERNAL_DEFS_H_
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