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// -*-C++-*-
// This file is a part of the IncludeOS unikernel - www.includeos.org
//
// Copyright 2015 Oslo and Akershus University College of Applied Sciences
// and Alfred Bratterud
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#ifndef INCLUDEOS_COMMON_HEADER
#define INCLUDEOS_COMMON_HEADER
#if !defined(__cplusplus)
#error "IncludeOS must be built with a C++ compiler"
#endif
/* We're not building for linux */
#if defined(__linux__)
#warning "You are compiling for Linux target"
#endif
#if defined(_WIN32)
#warning "You are compiling for Win32 target"
#endif
/* We're only doing 32-bit ix86 targets. */
#if !defined(__i386__)
#warning "This project is targeted at the i386 architecture"
#endif
/* BOCHS Break point */
#define BREAK __asm__ volatile("xchg %bx,%bx");
/* debugging macros */
#include "debug"
#include "info"
#define LIKELY(x) __builtin_expect(!!(x), 1)
#define UNLIKELY(x) __builtin_expect(!!(x), 0)
#include <gsl/gsl>
/* Define our own termination policy for contract */
/* violation to generate relevant information about */
/* the reason for termination. */
#if defined(OS_TERMINATE_ON_CONTRACT_VIOLATION)
#include <cstdlib> // Needed for std::exit
#include <iostream> // Needed for std::err
#define OS_STRINGIFY(x) #x
#undef Expects
#undef Ensures
#define Expects(cond) \
do { \
if (UNLIKELY(not (cond))) { \
std::cerr << "OS: Precondition (" OS_STRINGIFY(cond) \
<< ") failed...\n" << "\t...in function: " \
<< __func__ << " @" << __FILE__ << ":" \
<< __LINE__ << '\n'; \
std::terminate(); \
} \
} while(0)
#define Ensures(cond) \
do { \
if (UNLIKELY(not (cond))) { \
std::cerr << "OS: Postcondition (" OS_STRINGIFY(cond) \
<< ") failed...\n" << "\t...in function: " \
<< __func__ << " @" << __FILE__ << ":" \
<< __LINE__ << '\n'; \
std::terminate(); \
} \
} while(0)
#endif //< defined(OS_TERMINATE_ON_CONTRACT_VIOLATION)
#endif //< INCLUDEOS_COMMON_HEADER