util.h (10472B)
1 /* See LICENSE for license details. */ 2 #ifndef _UTIL_H_ 3 #define _UTIL_H_ 4 5 #include "compiler.h" 6 7 #if COMPILER_MSVC 8 typedef unsigned __int64 u64; 9 typedef signed __int64 i64; 10 typedef unsigned __int32 u32; 11 typedef signed __int32 i32; 12 typedef unsigned __int16 u16; 13 typedef signed __int16 i16; 14 typedef unsigned __int8 u8; 15 typedef signed __int8 i8; 16 #else 17 typedef __UINT64_TYPE__ u64; 18 typedef __INT64_TYPE__ i64; 19 typedef __UINT32_TYPE__ u32; 20 typedef __INT32_TYPE__ i32; 21 typedef __UINT16_TYPE__ u16; 22 typedef __INT16_TYPE__ i16; 23 typedef __UINT8_TYPE__ u8; 24 typedef __INT8_TYPE__ i8; 25 #endif 26 27 typedef char c8; 28 typedef u8 b8; 29 typedef u16 b16; 30 typedef u32 b32; 31 typedef float f32; 32 typedef double f64; 33 typedef i64 iz; 34 typedef u64 uz; 35 typedef i64 iptr; 36 typedef u64 uptr; 37 38 #ifndef asm 39 #define asm __asm__ 40 #endif 41 42 #ifndef typeof 43 #define typeof __typeof__ 44 #endif 45 46 #if OS_WINDOWS 47 #define EXPORT __declspec(dllexport) 48 #else 49 #define EXPORT 50 #endif 51 52 #ifdef _DEBUG 53 #define DEBUG_EXPORT EXPORT 54 #if OS_WINDOWS 55 #ifdef _BEAMFORMER_DLL 56 #define DEBUG_IMPORT __declspec(dllimport) 57 #else 58 #define DEBUG_IMPORT __declspec(dllexport) 59 #endif 60 #else 61 #ifdef _BEAMFORMER_DLL 62 #define DEBUG_IMPORT extern 63 #else 64 #define DEBUG_IMPORT 65 #endif 66 #endif 67 #define DEBUG_DECL(a) a 68 #define assert(c) do { if (!(c)) debugbreak(); } while (0) 69 #else 70 #define DEBUG_IMPORT global 71 #define DEBUG_EXPORT function 72 #define DEBUG_DECL(a) 73 #define assert(c) (void)(c) 74 #endif 75 #define ASSERT assert 76 77 #if ASAN_ACTIVE 78 void __asan_poison_memory_region(void *, i64); 79 void __asan_unpoison_memory_region(void *, i64); 80 #define asan_poison_region(region, size) __asan_poison_memory_region((region), (size)) 81 #define asan_unpoison_region(region, size) __asan_unpoison_memory_region((region), (size)) 82 #else 83 #define asan_poison_region(...) 84 #define asan_unpoison_region(...) 85 #endif 86 87 #define InvalidCodePath assert(0) 88 #define InvalidDefaultCase default: assert(0); break 89 90 #define arg_list(type, ...) (type []){__VA_ARGS__}, sizeof((type []){__VA_ARGS__}) / sizeof(type) 91 92 #define function static 93 #define global static 94 #define local_persist static 95 96 #if COMPILER_MSVC 97 #define thread_static __declspec(thread) 98 #elif COMPILER_CLANG || COMPILER_GCC 99 #define thread_static __thread 100 #else 101 #error thread_static not defined for this compiler 102 #endif 103 104 #define alignof _Alignof 105 #define static_assert _Static_assert 106 107 /* NOTE: garbage to get the prepocessor to properly stringize the value of a macro */ 108 #define str_(...) #__VA_ARGS__ 109 #define str(...) str_(__VA_ARGS__) 110 111 #define countof(a) (iz)(sizeof(a) / sizeof(*a)) 112 #define ARRAY_COUNT(a) (sizeof(a) / sizeof(*a)) 113 #define BETWEEN(x, a, b) ((x) >= (a) && (x) <= (b)) 114 #define CLAMP(x, a, b) ((x) < (a) ? (a) : (x) > (b) ? (b) : (x)) 115 #define CLAMP01(x) CLAMP(x, 0, 1) 116 #define ISPOWEROF2(a) (((a) & ((a) - 1)) == 0) 117 #define MIN(a, b) ((a) < (b) ? (a) : (b)) 118 #define MAX(a, b) ((a) > (b) ? (a) : (b)) 119 #define ORONE(x) ((x)? (x) : 1) 120 #define SIGN(x) ((x) < 0? -1 : 1) 121 #define swap(a, b) do {typeof(a) __tmp = (a); (a) = (b); (b) = __tmp;} while(0) 122 123 #define Abs(a) ((a) < 0 ? -(a) : (a)) 124 #define Sign(a) ((a) < 0 ? -1 : 1) 125 #define Between(x, a, b) ((x) >= (a) && (x) <= (b)) 126 #define Clamp(x, a, b) ((x) < (a) ? (a) : (x) > (b) ? (b) : (x)) 127 #define Min(a, b) ((a) < (b) ? (a) : (b)) 128 #define Max(a, b) ((a) > (b) ? (a) : (b)) 129 130 #define ISDIGIT(c) (BETWEEN((c), '0', '9')) 131 #define ISUPPER(c) (((c) & 0x20u) == 0) 132 #define TOLOWER(c) (((c) | 0x20u)) 133 #define TOUPPER(c) (((c) & ~(0x20u))) 134 135 #define f32_equal(x, y) (Abs((x) - (y)) <= F32_EPSILON * Max(1.0f, Max(Abs(x), Abs(y)))) 136 137 #define DeferLoop(begin, end) for (i32 _i_ = ((begin), 0); !_i_; _i_ += 1, (end)) 138 #define DeferLoopTag(begin, end, tag) for (i32 __##tag = ((begin), 0); !__##tag ; __##tag += 1, (end)) 139 140 #define EachBit(a, it) (u64 it = ctz_u64(a); it != 64; a &= ~(1u << (it)), it = ctz_u64(a)) 141 #define EachElement(array, it) (u64 it = 0; it < countof(array); it += 1) 142 #define EachEnumValue(type, it) (type it = (type)0; it < type##_Count; it = (type)(it + 1)) 143 #define EachNonZeroEnumValue(type, it) (type it = (type)1; it < type##_Count; it = (type)(it + 1)) 144 #define EachIndex(count, it) (u64 it = 0; it < count; it += 1) 145 146 #define spin_wait(c) while ((c)) cpu_yield() 147 148 #define DA_STRUCT(kind, name) typedef struct { \ 149 kind *data; \ 150 iz count; \ 151 iz capacity; \ 152 } name ##List; 153 154 /* NOTE(rnp): no guarantees about actually getting an element */ 155 #define SLLPop(list) list; list = list ? list->next : 0 156 #define SLLPush(v, list) do { \ 157 (v)->next = (list); \ 158 (list) = v; \ 159 } while (0) 160 161 #define SLLPopFreelist(list) list; do { \ 162 asan_unpoison_region((list), sizeof(*(list))); \ 163 (void)SLLPop((list)); \ 164 } while(0) 165 166 #define SLLPushFreelist(v, list) do { \ 167 SLLPush((v), (list)); \ 168 asan_poison_region((v), sizeof(*(v))); \ 169 } while(0) 170 171 #define DLLPushDown(v, list) do { \ 172 (v)->next = (list); \ 173 if ((v)->next) (v)->next->prev = (v); \ 174 (list) = (v); \ 175 } while (0) 176 177 #define DLLRemove(v) do { \ 178 if ((v)->next) (v)->next->prev = (v)->prev; \ 179 if ((v)->prev) (v)->prev->next = (v)->next; \ 180 } while (0) 181 182 #define KB(a) ((u64)(a) << 10ULL) 183 #define MB(a) ((u64)(a) << 20ULL) 184 #define GB(a) ((u64)(a) << 30ULL) 185 186 #define I8_MAX (0x0000007FL) 187 #define I32_MAX (0x7FFFFFFFL) 188 #define U8_MAX (0x000000FFUL) 189 #define U16_MAX (0x0000FFFFUL) 190 #define U32_MAX (0xFFFFFFFFUL) 191 #define U64_MAX (0xFFFFFFFFFFFFFFFFULL) 192 #define F32_INFINITY (1e+300*1e+300) 193 #define F32_EPSILON (1e-6f) 194 #ifndef PI 195 #define PI (3.14159265358979323846f) 196 #endif 197 198 #include "intrinsics.c" 199 200 typedef alignas(16) union { 201 u8 U8[16]; 202 u16 U16[8]; 203 u32 U32[4]; 204 u64 U64[2]; 205 u32x4 U32x4; 206 } u128; 207 208 typedef struct { u8 *beg, *end; } Arena; 209 typedef struct { Arena *arena, original_arena; } TempArena; 210 211 typedef struct { iz len; u8 *data; } s8; 212 #define s8(s) (s8){.len = countof(s) - 1, .data = (u8 *)s} 213 #define s8_comp(s) {sizeof(s) - 1, (u8 *)s} 214 215 typedef struct { iz len; u16 *data; } s16; 216 217 typedef struct { u32 cp, consumed; } UnicodeDecode; 218 219 typedef enum { 220 IntegerConversionResult_Invalid, 221 IntegerConversionResult_OutOfRange, 222 IntegerConversionResult_Success, 223 } IntegerConversionResult; 224 225 typedef struct { 226 IntegerConversionResult result; 227 union { 228 u64 U64; 229 i64 S64; 230 }; 231 s8 unparsed; 232 } IntegerConversion; 233 234 typedef struct { u64 start, stop; } RangeU64; 235 236 typedef union { 237 struct { i32 x, y; }; 238 struct { i32 w, h; }; 239 i32 E[2]; 240 } iv2; 241 242 typedef union { 243 struct { i32 x, y, z; }; 244 struct { i32 w, h, d; }; 245 iv2 xy; 246 i32 E[3]; 247 } iv3; 248 249 typedef union { 250 struct { i32 x, y, z, w; }; 251 struct { iv3 xyz; i32 _w; }; 252 i32 E[4]; 253 } iv4; 254 255 typedef union { 256 struct { u32 x, y; }; 257 struct { u32 w, h; }; 258 u32 E[2]; 259 } uv2; 260 261 typedef union { 262 struct { u32 x, y, z; }; 263 struct { u32 w, h, d; }; 264 uv2 xy; 265 u32 E[3]; 266 } uv3; 267 268 typedef union { 269 struct { u32 x, y, z, w; }; 270 struct { uv3 xyz; u32 _w; }; 271 u32 E[4]; 272 } uv4; 273 274 typedef union { 275 struct { f32 x, y; }; 276 struct { f32 w, h; }; 277 f32 E[2]; 278 } v2; 279 280 typedef union { 281 struct { f32 x, y, z; }; 282 struct { f32 w, h, d; }; 283 struct { v2 xy; f32 _1; }; 284 struct { f32 _2; v2 yz; }; 285 f32 E[3]; 286 } v3; 287 288 typedef union { 289 struct { f32 x, y, z, w; }; 290 struct { f32 r, g, b, a; }; 291 struct { v3 xyz; f32 _1; }; 292 struct { f32 _2; v3 yzw; }; 293 struct { v2 xy, zw; }; 294 f32 E[4]; 295 } v4; 296 297 #define XZ(v) (v2){.x = v.x, .y = v.z} 298 #define YZ(v) (v2){.x = v.y, .y = v.z} 299 #define XY(v) (v2){.x = v.x, .y = v.y} 300 301 typedef union { 302 struct { v4 x, y, z, w; }; 303 v4 c[4]; 304 f32 E[16]; 305 } m4; 306 307 /* TODO(rnp): delete raylib */ 308 typedef struct { 309 v3 origin; 310 v3 direction; 311 } ray; 312 313 typedef struct { v2 pos, size; } Rect; 314 #define INVERTED_INFINITY_RECT (Rect){.pos = {.x = -F32_INFINITY, .y = -F32_INFINITY}, \ 315 .size = {.x = -F32_INFINITY, .y = -F32_INFINITY}} 316 317 typedef struct { 318 u8 *data; 319 i32 widx; 320 i32 cap; 321 b32 errors; 322 } Stream; 323 324 #define INVALID_FILE (-1) 325 326 #ifndef OSInvalidHandleValue 327 #define OSInvalidHandleValue ((u64)-1) 328 typedef struct { u64 value[1]; } OSBarrier; 329 typedef struct { u64 value[1]; } OSHandle; 330 typedef struct { u64 value[1]; } OSLibrary; 331 typedef struct { u64 value[1]; } OSThread; 332 typedef struct { u64 value[1]; } OSW32Semaphore; 333 #endif 334 335 #define ValidHandle(h) ((h).value[0] != OSInvalidHandleValue) 336 #define InvalidHandle(h) ((h).value[0] == OSInvalidHandleValue) 337 338 typedef struct OS OS; 339 340 typedef struct { 341 u64 index; 342 u64 count; 343 OSBarrier barrier; 344 u64 * broadcast_memory; 345 } LaneContext; 346 347 typedef struct { 348 u8 name[16]; 349 u64 name_length; 350 351 LaneContext lane_context; 352 } ThreadContext; 353 354 #define OS_ALLOC_ARENA_FN(name) Arena name(iz capacity) 355 #define OS_READ_ENTIRE_FILE_FN(name) i64 name(const char *file, void *buffer, i64 buffer_capacity) 356 #define OS_WAIT_ON_ADDRESS_FN(name) b32 name(i32 *value, i32 current, u32 timeout_ms) 357 #define OS_WAKE_ALL_WAITERS_FN(name) void name(i32 *sync) 358 #define OS_THREAD_ENTRY_POINT_FN(name) u64 name(void *user_context) 359 360 #define OS_WRITE_NEW_FILE_FN(name) b32 name(char *fname, s8 raw) 361 typedef OS_WRITE_NEW_FILE_FN(os_write_new_file_fn); 362 363 #define RENDERDOC_GET_API_FN(name) b32 name(u32 version, void **out_api) 364 typedef RENDERDOC_GET_API_FN(renderdoc_get_api_fn); 365 366 #define RENDERDOC_START_FRAME_CAPTURE_FN(name) void name(iptr gl_context, iptr window_handle) 367 typedef RENDERDOC_START_FRAME_CAPTURE_FN(renderdoc_start_frame_capture_fn); 368 369 #define RENDERDOC_END_FRAME_CAPTURE_FN(name) b32 name(iptr gl_context, iptr window_handle) 370 typedef RENDERDOC_END_FRAME_CAPTURE_FN(renderdoc_end_frame_capture_fn); 371 372 typedef alignas(16) u8 RenderDocAPI[216]; 373 #define RENDERDOC_API_FN_ADDR(a, offset) (*(iptr *)((*a) + offset)) 374 #define RENDERDOC_START_FRAME_CAPTURE(a) (renderdoc_start_frame_capture_fn *)RENDERDOC_API_FN_ADDR(a, 152) 375 #define RENDERDOC_END_FRAME_CAPTURE(a) (renderdoc_end_frame_capture_fn *) RENDERDOC_API_FN_ADDR(a, 168) 376 377 #define LABEL_GL_OBJECT(type, id, s) {s8 _s = (s); glObjectLabel(type, id, (i32)_s.len, (c8 *)_s.data);} 378 379 #include "util.c" 380 #include "math.c" 381 382 #endif /* _UTIL_H_ */