488 lines
13 KiB
C++
488 lines
13 KiB
C++
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// Globals.h
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// This file gets included from every module in the project, so that global symbols may be introduced easily
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// Also used for precompiled header generation in MSVC environments
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// Compiler-dependent stuff:
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#if defined(_MSC_VER)
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// Disable some warnings that we don't care about:
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#pragma warning(disable:4100) // Unreferenced formal parameter
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// Useful warnings from warning level 4:
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#pragma warning(3 : 4189) // Local variable is initialized but not referenced
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#pragma warning(3 : 4245) // Conversion from 'type1' to 'type2', signed / unsigned mismatch
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#pragma warning(3 : 4310) // Cast truncates constant value
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#pragma warning(3 : 4389) // Signed / unsigned mismatch
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#pragma warning(3 : 4505) // Unreferenced local function has been removed
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#pragma warning(3 : 4701) // Potentially unitialized local variable used
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#pragma warning(3 : 4702) // Unreachable code
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#pragma warning(3 : 4706) // Assignment within conditional expression
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// 2014-10-23 xoft: Disabled this because the new C++11 headers in MSVC produce tons of these warnings uselessly
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// #pragma warning(3 : 4127) // Conditional expression is constant
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// Disabling this warning, because we know what we're doing when we're doing this:
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#pragma warning(disable: 4355) // 'this' used in initializer list
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// Disabled because it's useless:
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#pragma warning(disable: 4512) // 'class': assignment operator could not be generated - reported for each class that has a reference-type member
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#pragma warning(disable: 4351) // new behavior: elements of array 'member' will be default initialized
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// 2014_01_06 xoft: Disabled this warning because MSVC is stupid and reports it in obviously wrong places
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// #pragma warning(3 : 4244) // Conversion from 'type1' to 'type2', possible loss of data
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#define OBSOLETE __declspec(deprecated)
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#define FORMATSTRING(formatIndex, va_argsIndex)
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// MSVC has its own custom version of zu format
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#define SIZE_T_FMT "%Iu"
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#define SIZE_T_FMT_PRECISION(x) "%" #x "Iu"
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#define SIZE_T_FMT_HEX "%Ix"
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#define NORETURN __declspec(noreturn)
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#if (_MSC_VER < 1910)
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// MSVC 2013 (and possibly 2015?) have no idea about "noexcept(false)"
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#define CAN_THROW throw(...)
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#else
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#define CAN_THROW noexcept(false)
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#endif
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// Use non-standard defines in <cmath>
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#define _USE_MATH_DEFINES
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#ifdef _DEBUG
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// Override the "new" operator to include file and line specification for debugging memory leaks
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// Ref.: https://social.msdn.microsoft.com/Forums/en-US/ebc7dd7a-f3c6-49f1-8a60-e381052f21b6/debugging-memory-leaks?forum=vcgeneral#53f0cc89-62fe-45e8-bbf0-56b89f2a1901
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// This causes MSVC Debug runs to produce a report upon program exit, that contains memory-leaks
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// together with the file:line information about where the memory was allocated.
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// Note that this doesn't work with placement-new, which needs to temporarily #undef the macro
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// (See AllocationPool.h for an example).
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#ifdef _DEBUG
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#define _CRTDBG_MAP_ALLOC
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#include <stdlib.h>
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#include <crtdbg.h>
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#define DEBUG_CLIENTBLOCK new(_CLIENT_BLOCK, __FILE__, __LINE__)
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#define new DEBUG_CLIENTBLOCK
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// For some reason this works magically - each "new X" gets replaced as "new(_CLIENT_BLOCK, "file", line) X"
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// The CRT has a definition for this operator new that stores the debugging info for leak-finding later.
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#endif
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#endif
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#elif defined(__GNUC__)
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// TODO: Can GCC explicitly mark classes as abstract (no instances can be created)?
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#define abstract
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// override is part of c++11
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#if __cplusplus < 201103L
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#define override
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#endif
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#define OBSOLETE __attribute__((deprecated))
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#define FORMATSTRING(formatIndex, va_argsIndex) __attribute__((format (printf, formatIndex, va_argsIndex)))
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#if defined(_WIN32)
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// We're compiling on MinGW, which uses an old MSVCRT library that has no support for size_t printfing.
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// We need direct size formats:
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#if defined(_WIN64)
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#define SIZE_T_FMT "%I64u"
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#define SIZE_T_FMT_PRECISION(x) "%" #x "I64u"
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#define SIZE_T_FMT_HEX "%I64x"
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#else
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#define SIZE_T_FMT "%u"
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#define SIZE_T_FMT_PRECISION(x) "%" #x "u"
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#define SIZE_T_FMT_HEX "%x"
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#endif
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#else
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// We're compiling on Linux, so we can use libc's size_t printf format:
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#define SIZE_T_FMT "%zu"
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#define SIZE_T_FMT_PRECISION(x) "%" #x "zu"
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#define SIZE_T_FMT_HEX "%zx"
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#endif
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#define NORETURN __attribute((__noreturn__))
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#define CAN_THROW noexcept(false)
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#else
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#error "You are using an unsupported compiler, you might need to #define some stuff here for your compiler"
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#endif
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#ifdef _DEBUG
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#define NORETURNDEBUG NORETURN
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#else
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#define NORETURNDEBUG
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#endif
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#include <stddef.h>
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// Integral types with predefined sizes:
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typedef signed long long Int64;
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typedef signed int Int32;
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typedef signed short Int16;
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typedef signed char Int8;
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typedef unsigned long long UInt64;
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typedef unsigned int UInt32;
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typedef unsigned short UInt16;
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typedef unsigned char UInt8;
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typedef unsigned char Byte;
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typedef Byte ColourID;
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template <typename T, size_t Size>
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class SizeChecker
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{
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static_assert(sizeof(T) == Size, "Check the size of integral types");
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};
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template class SizeChecker<Int64, 8>;
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template class SizeChecker<Int32, 4>;
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template class SizeChecker<Int16, 2>;
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template class SizeChecker<Int8, 1>;
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template class SizeChecker<UInt64, 8>;
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template class SizeChecker<UInt32, 4>;
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template class SizeChecker<UInt16, 2>;
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template class SizeChecker<UInt8, 1>;
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// A macro to disallow the copy constructor and operator = functions
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// This should be used in the declarations for any class that shouldn't allow copying itself
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#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
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TypeName(const TypeName &) = delete; \
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TypeName & operator =(const TypeName &) = delete
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// A macro that is used to mark unused local variables, to avoid pedantic warnings in gcc / clang / MSVC
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// Note that in MSVC it requires the full type of X to be known
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#define UNUSED_VAR(X) (void)(X)
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// A macro that is used to mark unused function parameters, to avoid pedantic warnings in gcc
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// Written so that the full type of param needn't be known
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#ifdef _MSC_VER
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#define UNUSED(X)
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#else
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#define UNUSED UNUSED_VAR
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#endif
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// OS-dependent stuff:
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#ifdef _WIN32
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#define WIN32_LEAN_AND_MEAN
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#define _WIN32_WINNT _WIN32_WINNT_WS03 // We want to target Windows XP with Service Pack 2 & Windows Server 2003 with Service Pack 1 and higher
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// Windows SDK defines min and max macros, messing up with our std::min and std::max usage
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#define NOMINMAX
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#include <Windows.h>
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#include <winsock2.h>
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#include <Ws2tcpip.h> // IPv6 stuff
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// Windows SDK defines GetFreeSpace as a constant, probably a Win16 API remnant
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#ifdef GetFreeSpace
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#undef GetFreeSpace
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#endif // GetFreeSpace
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#else
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <time.h>
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#include <dirent.h>
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#include <errno.h>
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#include <iostream>
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#include <cstdio>
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#include <cstring>
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#include <pthread.h>
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#include <semaphore.h>
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#include <fcntl.h>
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#include <unistd.h>
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#endif
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#if defined(ANDROID_NDK)
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#define FILE_IO_PREFIX "/sdcard/Cuberite/"
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#else
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#define FILE_IO_PREFIX ""
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#endif
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// CRT stuff:
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#include <sys/stat.h>
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#include <cassert>
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#include <cstdio>
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#include <cmath>
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#include <cstdarg>
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// STL stuff:
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#include <array>
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#include <chrono>
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#include <vector>
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#include <list>
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#include <deque>
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#include <string>
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#include <map>
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#include <algorithm>
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#include <memory>
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#include <set>
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#include <queue>
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#include <limits>
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#include <random>
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#include <type_traits>
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#include <atomic>
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// Common headers (part 1, without macros):
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#include "StringUtils.h"
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#include "OSSupport/CriticalSection.h"
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#include "OSSupport/Event.h"
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#include "OSSupport/File.h"
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#include "OSSupport/StackTrace.h"
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#ifndef TEST_GLOBALS
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// These functions are defined in Logger.cpp, but are declared here to avoid including all of logger.h
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extern void LOG (const char * a_Format, ...) FORMATSTRING(1, 2);
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extern void LOGINFO (const char * a_Format, ...) FORMATSTRING(1, 2);
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extern void LOGWARNING(const char * a_Format, ...) FORMATSTRING(1, 2);
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extern void LOGERROR (const char * a_Format, ...) FORMATSTRING(1, 2);
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// In debug builds, translate LOGD to LOG, otherwise leave it out altogether:
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#ifdef _DEBUG
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#define LOGD LOG
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#else
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#define LOGD(...)
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#endif // _DEBUG
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#define LOGWARN LOGWARNING
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#else
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// Logging functions
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void inline LOGERROR(const char * a_Format, ...) FORMATSTRING(1, 2);
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void inline LOGERROR(const char * a_Format, ...)
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{
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va_list argList;
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va_start(argList, a_Format);
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vprintf(a_Format, argList);
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putchar('\n');
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fflush(stdout);
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va_end(argList);
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}
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void inline LOGWARNING(const char * a_Format, ...) FORMATSTRING(1, 2);
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void inline LOGWARNING(const char * a_Format, ...)
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{
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va_list argList;
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va_start(argList, a_Format);
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vprintf(a_Format, argList);
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putchar('\n');
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fflush(stdout);
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va_end(argList);
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}
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void inline LOGD(const char * a_Format, ...) FORMATSTRING(1, 2);
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void inline LOGD(const char * a_Format, ...)
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{
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va_list argList;
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va_start(argList, a_Format);
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vprintf(a_Format, argList);
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putchar('\n');
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fflush(stdout);
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va_end(argList);
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}
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void inline LOG(const char * a_Format, ...) FORMATSTRING(1, 2);
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void inline LOG(const char * a_Format, ...)
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{
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va_list argList;
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va_start(argList, a_Format);
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vprintf(a_Format, argList);
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putchar('\n');
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fflush(stdout);
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va_end(argList);
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}
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#define LOGINFO LOG
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#define LOGWARN LOGWARNING
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#endif
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// Common definitions:
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/** Evaluates to the number of elements in an array (compile-time!) */
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#define ARRAYCOUNT(X) (sizeof(X) / sizeof(*(X)))
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/** Allows arithmetic expressions like "32 KiB" (but consider using parenthesis around it, "(32 KiB)") */
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#define KiB * 1024
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#define MiB * 1024 * 1024
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/** Faster than (int)floorf((float)x / (float)div) */
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#define FAST_FLOOR_DIV(x, div) (((x) - (((x) < 0) ? ((div) - 1) : 0)) / (div))
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// Own version of assert() that writes failed assertions to the log for review
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#ifdef TEST_GLOBALS
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class cAssertFailure
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{
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};
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#ifdef _WIN32
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#if (defined(_MSC_VER) && defined(_DEBUG))
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#define DBG_BREAK _CrtDbgBreak()
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#else
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#define DBG_BREAK
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#endif
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#define REPORT_ERROR(FMT, ...) \
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{ \
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AString msg = Printf(FMT, __VA_ARGS__); \
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puts(msg.c_str()); \
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fflush(stdout); \
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OutputDebugStringA(msg.c_str()); \
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DBG_BREAK; \
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}
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#else
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#define REPORT_ERROR(FMT, ...) \
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{ \
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AString msg = Printf(FMT, __VA_ARGS__); \
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puts(msg.c_str()); \
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fflush(stdout); \
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}
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#endif
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#ifdef _DEBUG
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#define ASSERT(x) do { if (!(x)) { throw cAssertFailure();} } while (0)
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#define testassert(x) do { if (!(x)) { REPORT_ERROR("Test failure: %s, file %s, line %d\n", #x, __FILE__, __LINE__); exit(1); } } while (0)
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#define CheckAsserts(x) do { try {x} catch (cAssertFailure) { break; } REPORT_ERROR("Test failure: assert didn't fire for %s, file %s, line %d\n", #x, __FILE__, __LINE__); exit(1); } while (0)
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#else
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#define ASSERT(...)
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#define testassert(...)
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#define CheckAsserts(...) LOG("Assert checking is disabled in Release-mode executables (file %s, line %d)", __FILE__, __LINE__)
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#endif
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#else
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#ifdef _DEBUG
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#define ASSERT(x) ( !!(x) || ( LOGERROR("Assertion failed: %s, file %s, line %i", #x, __FILE__, __LINE__), PrintStackTrace(), assert(0), 0))
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#else
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#define ASSERT(x)
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#endif
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#endif
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// Pretty much the same as ASSERT() but stays in Release builds
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#define VERIFY( x) ( !!(x) || ( LOGERROR("Verification failed: %s, file %s, line %i", #x, __FILE__, __LINE__), PrintStackTrace(), exit(1), 0))
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// Same as assert but in all Self test builds
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#ifdef SELF_TEST
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#define assert_test(x) ( !!(x) || (assert(!#x), exit(1), 0))
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#endif
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/** A generic interface used mainly in ForEach() functions */
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template <typename Type> class cItemCallback
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{
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public:
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virtual ~cItemCallback() {}
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/** Called for each item in the internal list; return true to stop the loop, or false to continue enumerating */
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virtual bool Item(Type * a_Type) = 0;
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} ;
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/** Clamp X to the specified range. */
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template <typename T>
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T Clamp(T a_Value, T a_Min, T a_Max)
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{
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return (a_Value < a_Min) ? a_Min : ((a_Value > a_Max) ? a_Max : a_Value);
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}
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/** Floors a value, then casts it to C (an int by default) */
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template <typename C = int, typename T>
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typename std::enable_if<std::is_arithmetic<T>::value, C>::type FloorC(T a_Value)
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{
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return static_cast<C>(std::floor(a_Value));
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}
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/** Ceils a value, then casts it to C (an int by default) */
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template <typename C = int, typename T>
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typename std::enable_if<std::is_arithmetic<T>::value, C>::type CeilC(T a_Value)
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{
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return static_cast<C>(std::ceil(a_Value));
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}
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//temporary replacement for std::make_unique until we get c++14
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namespace cpp14
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{
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template <class T, class... Args>
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std::unique_ptr<T> make_unique(Args&&... args)
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{
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return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
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}
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}
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// a tick is 50 ms
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using cTickTime = std::chrono::duration<int, std::ratio_multiply<std::chrono::milliseconds::period, std::ratio<50>>>;
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using cTickTimeLong = std::chrono::duration<Int64, cTickTime::period>;
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#ifndef TOLUA_TEMPLATE_BIND
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#define TOLUA_TEMPLATE_BIND(x)
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#endif
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// Common headers (part 2, with macros):
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#include "ChunkDef.h"
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#include "BiomeDef.h"
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#include "BlockID.h"
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#include "BlockInfo.h"
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