summaryrefslogtreecommitdiffstats
path: root/src/Globals.h
blob: 804b0a5acd81afabe8d62f989c06b7b0afb0b22f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512

// Globals.h

// This file gets included from every module in the project, so that global symbols may be introduced easily
// Also used for precompiled header generation in MSVC environments





// Compiler-dependent stuff:
#if defined(_MSC_VER)
	// Disable some warnings that we don't care about:
	#pragma warning(disable:4100)  // Unreferenced formal parameter

	// Useful warnings from warning level 4:
	#pragma warning(3 : 4189)  // Local variable is initialized but not referenced
	#pragma warning(3 : 4245)  // Conversion from 'type1' to 'type2', signed / unsigned mismatch
	#pragma warning(3 : 4310)  // Cast truncates constant value
	#pragma warning(3 : 4389)  // Signed / unsigned mismatch
	#pragma warning(3 : 4505)  // Unreferenced local function has been removed
	#pragma warning(3 : 4701)  // Potentially unitialized local variable used
	#pragma warning(3 : 4702)  // Unreachable code
	#pragma warning(3 : 4706)  // Assignment within conditional expression

	// 2014-10-23 xoft: Disabled this because the new C++11 headers in MSVC produce tons of these warnings uselessly
	// #pragma warning(3 : 4127)  // Conditional expression is constant

	// Disabling this warning, because we know what we're doing when we're doing this:
	#pragma warning(disable: 4355)  // 'this' used in initializer list

	// Disabled because it's useless:
	#pragma warning(disable: 4512)  // 'class': assignment operator could not be generated - reported for each class that has a reference-type member
	#pragma warning(disable: 4351)  // new behavior: elements of array 'member' will be default initialized

	// 2014_01_06 xoft: Disabled this warning because MSVC is stupid and reports it in obviously wrong places
	// #pragma warning(3 : 4244)  // Conversion from 'type1' to 'type2', possible loss of data

	#define OBSOLETE __declspec(deprecated)

	// No alignment needed in MSVC
	#define ALIGN_8
	#define ALIGN_16

	#define FORMATSTRING(formatIndex, va_argsIndex)

	// MSVC has its own custom version of zu format
	#define SIZE_T_FMT "%Iu"
	#define SIZE_T_FMT_PRECISION(x) "%" #x "Iu"
	#define SIZE_T_FMT_HEX "%Ix"

	#define NORETURN      __declspec(noreturn)

	// Use non-standard defines in <cmath>
	#define _USE_MATH_DEFINES

#elif defined(__GNUC__)

	// TODO: Can GCC explicitly mark classes as abstract (no instances can be created)?
	#define abstract

	// override is part of c++11
	#if __cplusplus < 201103L
		#define override
	#endif

	#define OBSOLETE __attribute__((deprecated))

	#define ALIGN_8 __attribute__((aligned(8)))
	#define ALIGN_16 __attribute__((aligned(16)))

	// Some portability macros :)
	#define stricmp strcasecmp

	#define FORMATSTRING(formatIndex, va_argsIndex) __attribute__((format (printf, formatIndex, va_argsIndex)))

	#if defined(_WIN32)
		// We're compiling on MinGW, which uses an old MSVCRT library that has no support for size_t printfing.
		// We need direct size formats:
		#if defined(_WIN64)
			#define SIZE_T_FMT "%I64u"
			#define SIZE_T_FMT_PRECISION(x) "%" #x "I64u"
			#define SIZE_T_FMT_HEX "%I64x"
		#else
			#define SIZE_T_FMT "%u"
			#define SIZE_T_FMT_PRECISION(x) "%" #x "u"
			#define SIZE_T_FMT_HEX "%x"
		#endif
	#else
		// We're compiling on Linux, so we can use libc's size_t printf format:
		#define SIZE_T_FMT "%zu"
		#define SIZE_T_FMT_PRECISION(x) "%" #x "zu"
		#define SIZE_T_FMT_HEX "%zx"
	#endif

	#define NORETURN      __attribute((__noreturn__))

#else

	#error "You are using an unsupported compiler, you might need to #define some stuff here for your compiler"

#endif




#ifdef  _DEBUG
	#define NORETURNDEBUG NORETURN
#else
	#define NORETURNDEBUG
#endif


#include <stddef.h>


// Integral types with predefined sizes:
typedef signed long long Int64;
typedef signed int       Int32;
typedef signed short     Int16;
typedef signed char      Int8;

typedef unsigned long long UInt64;
typedef unsigned int       UInt32;
typedef unsigned short     UInt16;
typedef unsigned char      UInt8;

typedef unsigned char Byte;
typedef Byte ColourID;


// If you get an error about specialization check the size of integral types
template <typename T, size_t Size, bool x = sizeof(T) == Size>
class SizeChecker;

template <typename T, size_t Size>
class SizeChecker<T, Size, true>
{
	T v;
};

template class SizeChecker<Int64, 8>;
template class SizeChecker<Int32, 4>;
template class SizeChecker<Int16, 2>;
template class SizeChecker<Int8,  1>;

template class SizeChecker<UInt64, 8>;
template class SizeChecker<UInt32, 4>;
template class SizeChecker<UInt16, 2>;
template class SizeChecker<UInt8,  1>;

// A macro to disallow the copy constructor and operator = functions
// This should be used in the private: declarations for any class that shouldn't allow copying itself
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
	TypeName(const TypeName &); \
	void operator =(const TypeName &)

// A macro that is used to mark unused local variables, to avoid pedantic warnings in gcc / clang / MSVC
// Note that in MSVC it requires the full type of X to be known
#define UNUSED_VAR(X) (void)(X)

// A macro that is used to mark unused function parameters, to avoid pedantic warnings in gcc
// Written so that the full type of param needn't be known
#ifdef _MSC_VER
	#define UNUSED(X)
#else
	#define UNUSED UNUSED_VAR
#endif




// OS-dependent stuff:
#ifdef _WIN32

	#define WIN32_LEAN_AND_MEAN
	#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

	// Windows SDK defines min and max macros, messing up with our std::min and std::max usage
	#define NOMINMAX

	#include <Windows.h>
	#include <winsock2.h>
	#include <Ws2tcpip.h>  // IPv6 stuff

	// Windows SDK defines GetFreeSpace as a constant, probably a Win16 API remnant
	#ifdef GetFreeSpace
		#undef GetFreeSpace
	#endif  // GetFreeSpace
#else
	#include <sys/types.h>
	#include <sys/time.h>
	#include <sys/socket.h>
	#include <netinet/in.h>
	#include <arpa/inet.h>
	#include <netdb.h>
	#include <time.h>
	#include <dirent.h>
	#include <errno.h>
	#include <iostream>
	#include <cstdio>
	#include <cstring>
	#include <pthread.h>
	#include <semaphore.h>
	#include <errno.h>
	#include <fcntl.h>
	#include <unistd.h>
#endif

#if defined(ANDROID_NDK)
	#define FILE_IO_PREFIX "/sdcard/Cuberite/"
#else
	#define FILE_IO_PREFIX ""
#endif





// CRT stuff:
#include <sys/stat.h>
#include <cassert>
#include <cstdio>
#include <cmath>
#include <cstdarg>





// STL stuff:
#include <array>
#include <chrono>
#include <vector>
#include <list>
#include <deque>
#include <string>
#include <map>
#include <algorithm>
#include <memory>
#include <set>
#include <queue>
#include <limits>
#include <chrono>




// Common headers (part 1, without macros):
#include "StringUtils.h"
#include "OSSupport/CriticalSection.h"
#include "OSSupport/Event.h"
#include "OSSupport/File.h"
#include "OSSupport/StackTrace.h"

#ifndef TEST_GLOBALS

	// These functions are defined in Logger.cpp, but are declared here to avoid including all of logger.h
	extern void LOG       (const char * a_Format, ...) FORMATSTRING(1, 2);
	extern void LOGINFO   (const char * a_Format, ...) FORMATSTRING(1, 2);
	extern void LOGWARNING(const char * a_Format, ...) FORMATSTRING(1, 2);
	extern void LOGERROR  (const char * a_Format, ...) FORMATSTRING(1, 2);

	// In debug builds, translate LOGD to LOG, otherwise leave it out altogether:
	#ifdef _DEBUG
		#define LOGD LOG
	#else
		#define LOGD(...)
	#endif  // _DEBUG

	#define LOGWARN LOGWARNING

#else
	// Logging functions
	void inline LOGERROR(const char * a_Format, ...) FORMATSTRING(1, 2);

	void inline LOGERROR(const char * a_Format, ...)
	{
		va_list argList;
		va_start(argList, a_Format);
		vprintf(a_Format, argList);
		putchar('\n');
		fflush(stdout);
		va_end(argList);
	}

	void inline LOGWARNING(const char * a_Format, ...) FORMATSTRING(1, 2);

	void inline LOGWARNING(const char * a_Format, ...)
	{
		va_list argList;
		va_start(argList, a_Format);
		vprintf(a_Format, argList);
		putchar('\n');
		fflush(stdout);
		va_end(argList);
	}

	void inline LOGD(const char * a_Format, ...) FORMATSTRING(1, 2);

	void inline LOGD(const char * a_Format, ...)
	{
		va_list argList;
		va_start(argList, a_Format);
		vprintf(a_Format, argList);
		putchar('\n');
		fflush(stdout);
		va_end(argList);
	}

	void inline LOG(const char * a_Format, ...) FORMATSTRING(1, 2);

	void inline LOG(const char * a_Format, ...)
	{
		va_list argList;
		va_start(argList, a_Format);
		vprintf(a_Format, argList);
		putchar('\n');
		fflush(stdout);
		va_end(argList);
	}

	#define LOGINFO LOG
	#define LOGWARN LOGWARNING

#endif





// Common definitions:

/** Evaluates to the number of elements in an array (compile-time!) */
#define ARRAYCOUNT(X) (sizeof(X) / sizeof(*(X)))

/** Allows arithmetic expressions like "32 KiB" (but consider using parenthesis around it, "(32 KiB)") */
#define KiB * 1024
#define MiB * 1024 * 1024

/** Faster than (int)floorf((float)x / (float)div) */
#define FAST_FLOOR_DIV(x, div) (((x) - (((x) < 0) ? ((div) - 1) : 0)) / (div))

// Own version of assert() that writes failed assertions to the log for review
#ifdef TEST_GLOBALS

	class cAssertFailure
	{
	};

	#ifdef _WIN32
		#if (defined(_MSC_VER) && defined(_DEBUG))
			#define DBG_BREAK _CrtDbgBreak()
		#else
			#define DBG_BREAK
		#endif
		#define REPORT_ERROR(FMT, ...) \
		{ \
			AString msg = Printf(FMT, __VA_ARGS__); \
			puts(msg.c_str()); \
			fflush(stdout); \
			OutputDebugStringA(msg.c_str()); \
			DBG_BREAK; \
		}
	#else
		#define REPORT_ERROR(FMT, ...) \
		{ \
			AString msg = Printf(FMT, __VA_ARGS__); \
			puts(msg.c_str()); \
			fflush(stdout); \
		}
	#endif

	#ifdef _DEBUG
		#define ASSERT(x) do { if (!(x)) { throw cAssertFailure();} } while (0)
		#define testassert(x) do { if (!(x)) { REPORT_ERROR("Test failure: %s, file %s, line %d\n", #x, __FILE__, __LINE__); exit(1); } } while (0)
		#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)
	#else
		#define ASSERT(...)
		#define testassert(...)
		#define CheckAsserts(...) LOG("Assert checking is disabled in Release-mode executables (file %s, line %d)", __FILE__, __LINE__)
	#endif

#else
	#ifdef _DEBUG
		#define ASSERT(x) ( !!(x) || ( LOGERROR("Assertion failed: %s, file %s, line %i", #x, __FILE__, __LINE__), PrintStackTrace(), assert(0), 0))
	#else
		#define ASSERT(x)
	#endif
#endif

// Pretty much the same as ASSERT() but stays in Release builds
#define VERIFY( x) ( !!(x) || ( LOGERROR("Verification failed: %s, file %s, line %i", #x, __FILE__, __LINE__), PrintStackTrace(), exit(1), 0))

// Same as assert but in all Self test builds
#ifdef SELF_TEST
	#define assert_test(x) ( !!(x) || (assert(!#x), exit(1), 0))
#endif

// Unified ptr types from before C++11. Also no silly undercores.
#define SharedPtr std::shared_ptr
#define WeakPtr std::weak_ptr
#define UniquePtr std::unique_ptr





/** A generic interface used mainly in ForEach() functions */
template <typename Type> class cItemCallback
{
public:
	virtual ~cItemCallback() {}

	/** Called for each item in the internal list; return true to stop the loop, or false to continue enumerating */
	virtual bool Item(Type * a_Type) = 0;
} ;




/** Clamp X to the specified range. */
template <typename T>
T Clamp(T a_Value, T a_Min, T a_Max)
{
	return (a_Value < a_Min) ? a_Min : ((a_Value > a_Max) ? a_Max : a_Value);
}





/** Floors a value, then casts it to C (an int by default) */
template <typename C = int, typename T>
typename std::enable_if<std::is_arithmetic<T>::value, C>::type FloorC(T a_Value)
{
	return static_cast<C>(std::floor(a_Value));
}

/** Ceils a value, then casts it to C (an int by default) */
template <typename C = int, typename T>
typename std::enable_if<std::is_arithmetic<T>::value, C>::type CeilC(T a_Value)
{
	return static_cast<C>(std::ceil(a_Value));
}

namespace cpp14
{
	// Temporary replacement for std::make_unique until we get c++14
	template <class T, class... Args>
	std::unique_ptr<T> make_unique(Args&&... args)
	{
		return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
	}

	// Temporary workaround for ...
	template <typename StorageType>
	struct move_on_copy_wrapper
	{
		move_on_copy_wrapper(StorageType && a_Value) :
			value(std::move(a_Value))
		{
		}

		move_on_copy_wrapper(const move_on_copy_wrapper & a_Other) :
			value(std::move(a_Other.value))
		{
		}

		move_on_copy_wrapper& operator=(const move_on_copy_wrapper & a_Other)
		{
			value = std::move(a_Other.value);
			return *this;
		}

		mutable StorageType value;
	};
}

namespace std
{
	template <typename WeakPtrType>
	struct equal_to<std::weak_ptr<WeakPtrType>>
	{
		constexpr bool operator()(const std::weak_ptr<WeakPtrType> & a_Lhs, const std::weak_ptr<WeakPtrType> & a_Rhs) const
		{
			return (!a_Lhs.owner_before(a_Rhs) && !a_Rhs.owner_before(a_Lhs));
		}
	};
}

// a tick is 50 ms
using cTickTime = std::chrono::duration<int,  std::ratio_multiply<std::chrono::milliseconds::period, std::ratio<50>>>;
using cTickTimeLong = std::chrono::duration<Int64,  cTickTime::period>;

#ifndef TOLUA_TEMPLATE_BIND
	#define TOLUA_TEMPLATE_BIND(x)
#endif





// Common headers (part 2, with macros):
#include "ChunkDef.h"
#include "BiomeDef.h"
#include "BlockID.h"
#include "BlockInfo.h"