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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
c2f1db8f | 2 | #pragma once |
60918275 | 3 | |
c31e1495 | 4 | #include <inttypes.h> |
c01ff965 | 5 | #include <stdbool.h> |
afc5dbf3 | 6 | #include <sys/param.h> |
27d13af7 | 7 | #include <sys/sysmacros.h> |
afc5dbf3 | 8 | #include <sys/types.h> |
60918275 | 9 | |
117efe06 | 10 | #define _printf_(a, b) __attribute__ ((format (printf, a, b))) |
26e9e10b ZJS |
11 | #ifdef __clang__ |
12 | # define _alloc_(...) | |
13 | #else | |
14 | # define _alloc_(...) __attribute__ ((alloc_size(__VA_ARGS__))) | |
15 | #endif | |
93a46b0b | 16 | #define _sentinel_ __attribute__ ((sentinel)) |
93a46b0b LP |
17 | #define _unused_ __attribute__ ((unused)) |
18 | #define _destructor_ __attribute__ ((destructor)) | |
19 | #define _pure_ __attribute__ ((pure)) | |
20 | #define _const_ __attribute__ ((const)) | |
21 | #define _deprecated_ __attribute__ ((deprecated)) | |
22 | #define _packed_ __attribute__ ((packed)) | |
23 | #define _malloc_ __attribute__ ((malloc)) | |
24 | #define _weak_ __attribute__ ((weak)) | |
117efe06 FB |
25 | #define _likely_(x) (__builtin_expect(!!(x), 1)) |
26 | #define _unlikely_(x) (__builtin_expect(!!(x), 0)) | |
40473a70 LP |
27 | #define _public_ __attribute__ ((visibility("default"))) |
28 | #define _hidden_ __attribute__ ((visibility("hidden"))) | |
ad780f19 | 29 | #define _weakref_(x) __attribute__((weakref(#x))) |
19d1e4ee | 30 | #define _alignas_(x) __attribute__((aligned(__alignof(x)))) |
dfb33a97 | 31 | #define _cleanup_(x) __attribute__((cleanup(x))) |
fb8e74a4 | 32 | #if __GNUC__ >= 7 |
4831981d | 33 | #define _fallthrough_ __attribute__((fallthrough)) |
fb8e74a4 SL |
34 | #else |
35 | #define _fallthrough_ | |
36 | #endif | |
848e863a FB |
37 | /* Define C11 noreturn without <stdnoreturn.h> and even on older gcc |
38 | * compiler versions */ | |
39 | #ifndef _noreturn_ | |
40 | #if __STDC_VERSION__ >= 201112L | |
41 | #define _noreturn_ _Noreturn | |
42 | #else | |
43 | #define _noreturn_ __attribute__((noreturn)) | |
44 | #endif | |
45 | #endif | |
60918275 | 46 | |
989290db ZJS |
47 | #if !defined(HAS_FEATURE_MEMORY_SANITIZER) |
48 | # if defined(__has_feature) | |
49 | # if __has_feature(memory_sanitizer) | |
50 | # define HAS_FEATURE_MEMORY_SANITIZER 1 | |
51 | # endif | |
52 | # endif | |
53 | # if !defined(HAS_FEATURE_MEMORY_SANITIZER) | |
54 | # define HAS_FEATURE_MEMORY_SANITIZER 0 | |
55 | # endif | |
56 | #endif | |
57 | ||
7ebe131a LP |
58 | /* Temporarily disable some warnings */ |
59 | #define DISABLE_WARNING_DECLARATION_AFTER_STATEMENT \ | |
60 | _Pragma("GCC diagnostic push"); \ | |
61 | _Pragma("GCC diagnostic ignored \"-Wdeclaration-after-statement\"") | |
62 | ||
bcfce235 LP |
63 | #define DISABLE_WARNING_FORMAT_NONLITERAL \ |
64 | _Pragma("GCC diagnostic push"); \ | |
65 | _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"") | |
66 | ||
f0f2e63b LP |
67 | #define DISABLE_WARNING_MISSING_PROTOTYPES \ |
68 | _Pragma("GCC diagnostic push"); \ | |
69 | _Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"") | |
70 | ||
8fca4e30 LP |
71 | #define DISABLE_WARNING_NONNULL \ |
72 | _Pragma("GCC diagnostic push"); \ | |
73 | _Pragma("GCC diagnostic ignored \"-Wnonnull\"") | |
74 | ||
d442e2ec DH |
75 | #define DISABLE_WARNING_SHADOW \ |
76 | _Pragma("GCC diagnostic push"); \ | |
77 | _Pragma("GCC diagnostic ignored \"-Wshadow\"") | |
78 | ||
df99a9ef ZJS |
79 | #define DISABLE_WARNING_INCOMPATIBLE_POINTER_TYPES \ |
80 | _Pragma("GCC diagnostic push"); \ | |
81 | _Pragma("GCC diagnostic ignored \"-Wincompatible-pointer-types\"") | |
82 | ||
7ebe131a LP |
83 | #define REENABLE_WARNING \ |
84 | _Pragma("GCC diagnostic pop") | |
85 | ||
49e5de64 ZJS |
86 | /* automake test harness */ |
87 | #define EXIT_TEST_SKIP 77 | |
88 | ||
bef2733f LP |
89 | #define XSTRINGIFY(x) #x |
90 | #define STRINGIFY(x) XSTRINGIFY(x) | |
91 | ||
ab9cbe34 LS |
92 | #define XCONCATENATE(x, y) x ## y |
93 | #define CONCATENATE(x, y) XCONCATENATE(x, y) | |
94 | ||
fb835651 DH |
95 | #define UNIQ_T(x, uniq) CONCATENATE(__unique_prefix_, CONCATENATE(x, uniq)) |
96 | #define UNIQ __COUNTER__ | |
97 | ||
13b498f9 TJ |
98 | /* builtins */ |
99 | #if __SIZEOF_INT__ == 4 | |
100 | #define BUILTIN_FFS_U32(x) __builtin_ffs(x); | |
101 | #elif __SIZEOF_LONG__ == 4 | |
102 | #define BUILTIN_FFS_U32(x) __builtin_ffsl(x); | |
103 | #else | |
104 | #error "neither int nor long are four bytes long?!?" | |
105 | #endif | |
106 | ||
60918275 | 107 | /* Rounds up */ |
9be9c7cf LP |
108 | |
109 | #define ALIGN4(l) (((l) + 3) & ~3) | |
110 | #define ALIGN8(l) (((l) + 7) & ~7) | |
111 | ||
112 | #if __SIZEOF_POINTER__ == 8 | |
113 | #define ALIGN(l) ALIGN8(l) | |
114 | #elif __SIZEOF_POINTER__ == 4 | |
115 | #define ALIGN(l) ALIGN4(l) | |
116 | #else | |
117 | #error "Wut? Pointers are neither 4 nor 8 bytes long?" | |
118 | #endif | |
119 | ||
5f86c1f4 LP |
120 | #define ALIGN_PTR(p) ((void*) ALIGN((unsigned long) (p))) |
121 | #define ALIGN4_PTR(p) ((void*) ALIGN4((unsigned long) (p))) | |
122 | #define ALIGN8_PTR(p) ((void*) ALIGN8((unsigned long) (p))) | |
e86b80b8 | 123 | |
37f85e66 | 124 | static inline size_t ALIGN_TO(size_t l, size_t ali) { |
125 | return ((l + ali - 1) & ~(ali - 1)); | |
22be093f LP |
126 | } |
127 | ||
5f86c1f4 | 128 | #define ALIGN_TO_PTR(p, ali) ((void*) ALIGN_TO((unsigned long) (p), (ali))) |
49aa47c7 | 129 | |
625e870b DH |
130 | /* align to next higher power-of-2 (except for: 0 => 0, overflow => 0) */ |
131 | static inline unsigned long ALIGN_POWER2(unsigned long u) { | |
132 | /* clz(0) is undefined */ | |
133 | if (u == 1) | |
134 | return 1; | |
135 | ||
136 | /* left-shift overflow is undefined */ | |
137 | if (__builtin_clzl(u - 1UL) < 1) | |
138 | return 0; | |
139 | ||
140 | return 1UL << (sizeof(u) * 8 - __builtin_clzl(u - 1UL)); | |
141 | } | |
142 | ||
963c6c90 ZJS |
143 | #ifndef __COVERITY__ |
144 | # define VOID_0 ((void)0) | |
145 | #else | |
146 | # define VOID_0 ((void*)0) | |
147 | #endif | |
148 | ||
117efe06 FB |
149 | #define ELEMENTSOF(x) \ |
150 | (__builtin_choose_expr( \ | |
7f39a210 | 151 | !__builtin_types_compatible_p(typeof(x), typeof(&*(x))), \ |
117efe06 | 152 | sizeof(x)/sizeof((x)[0]), \ |
963c6c90 | 153 | VOID_0)) |
6febe75d TH |
154 | |
155 | /* | |
156 | * STRLEN - return the length of a string literal, minus the trailing NUL byte. | |
157 | * Contrary to strlen(), this is a constant expression. | |
158 | * @x: a string literal. | |
159 | */ | |
160 | #define STRLEN(x) (sizeof(""x"") - 1) | |
161 | ||
bbc98d32 KS |
162 | /* |
163 | * container_of - cast a member of a structure out to the containing structure | |
164 | * @ptr: the pointer to the member. | |
165 | * @type: the type of the container struct this is embedded in. | |
166 | * @member: the name of the member within the struct. | |
bbc98d32 | 167 | */ |
fb835651 DH |
168 | #define container_of(ptr, type, member) __container_of(UNIQ, (ptr), type, member) |
169 | #define __container_of(uniq, ptr, type, member) \ | |
117efe06 | 170 | ({ \ |
fb835651 | 171 | const typeof( ((type*)0)->member ) *UNIQ_T(A, uniq) = (ptr); \ |
117efe06 | 172 | (type*)( (char *)UNIQ_T(A, uniq) - offsetof(type, member) ); \ |
fb835651 | 173 | }) |
bbc98d32 | 174 | |
9607d947 | 175 | #undef MAX |
667a0377 DH |
176 | #define MAX(a, b) __MAX(UNIQ, (a), UNIQ, (b)) |
177 | #define __MAX(aq, a, bq, b) \ | |
117efe06 | 178 | ({ \ |
667a0377 DH |
179 | const typeof(a) UNIQ_T(A, aq) = (a); \ |
180 | const typeof(b) UNIQ_T(B, bq) = (b); \ | |
117efe06 | 181 | UNIQ_T(A, aq) > UNIQ_T(B, bq) ? UNIQ_T(A, aq) : UNIQ_T(B, bq); \ |
667a0377 | 182 | }) |
60918275 | 183 | |
7242d742 DH |
184 | /* evaluates to (void) if _A or _B are not constant or of different types */ |
185 | #define CONST_MAX(_A, _B) \ | |
117efe06 | 186 | (__builtin_choose_expr( \ |
7242d742 DH |
187 | __builtin_constant_p(_A) && \ |
188 | __builtin_constant_p(_B) && \ | |
189 | __builtin_types_compatible_p(typeof(_A), typeof(_B)), \ | |
190 | ((_A) > (_B)) ? (_A) : (_B), \ | |
963c6c90 | 191 | VOID_0)) |
7242d742 | 192 | |
40a1eebd DH |
193 | /* takes two types and returns the size of the larger one */ |
194 | #define MAXSIZE(A, B) (sizeof(union _packed_ { typeof(A) a; typeof(B) b; })) | |
195 | ||
117efe06 FB |
196 | #define MAX3(x, y, z) \ |
197 | ({ \ | |
198 | const typeof(x) _c = MAX(x, y); \ | |
199 | MAX(_c, z); \ | |
200 | }) | |
3b63d2d3 | 201 | |
9607d947 | 202 | #undef MIN |
667a0377 DH |
203 | #define MIN(a, b) __MIN(UNIQ, (a), UNIQ, (b)) |
204 | #define __MIN(aq, a, bq, b) \ | |
117efe06 | 205 | ({ \ |
667a0377 DH |
206 | const typeof(a) UNIQ_T(A, aq) = (a); \ |
207 | const typeof(b) UNIQ_T(B, bq) = (b); \ | |
117efe06 | 208 | UNIQ_T(A, aq) < UNIQ_T(B, bq) ? UNIQ_T(A, aq) : UNIQ_T(B, bq); \ |
667a0377 | 209 | }) |
60918275 | 210 | |
117efe06 FB |
211 | #define MIN3(x, y, z) \ |
212 | ({ \ | |
213 | const typeof(x) _c = MIN(x, y); \ | |
214 | MIN(_c, z); \ | |
215 | }) | |
7df23077 | 216 | |
667a0377 DH |
217 | #define LESS_BY(a, b) __LESS_BY(UNIQ, (a), UNIQ, (b)) |
218 | #define __LESS_BY(aq, a, bq, b) \ | |
117efe06 | 219 | ({ \ |
667a0377 DH |
220 | const typeof(a) UNIQ_T(A, aq) = (a); \ |
221 | const typeof(b) UNIQ_T(B, bq) = (b); \ | |
117efe06 | 222 | UNIQ_T(A, aq) > UNIQ_T(B, bq) ? UNIQ_T(A, aq) - UNIQ_T(B, bq) : 0; \ |
667a0377 | 223 | }) |
348ced90 | 224 | |
84fb2131 FB |
225 | #define CMP(a, b) __CMP(UNIQ, (a), UNIQ, (b)) |
226 | #define __CMP(aq, a, bq, b) \ | |
227 | ({ \ | |
228 | const typeof(a) UNIQ_T(A, aq) = (a); \ | |
229 | const typeof(b) UNIQ_T(B, bq) = (b); \ | |
230 | UNIQ_T(A, aq) < UNIQ_T(B, bq) ? -1 : \ | |
231 | UNIQ_T(A, aq) > UNIQ_T(B, bq) ? 1 : 0; \ | |
232 | }) | |
233 | ||
667a0377 DH |
234 | #undef CLAMP |
235 | #define CLAMP(x, low, high) __CLAMP(UNIQ, (x), UNIQ, (low), UNIQ, (high)) | |
236 | #define __CLAMP(xq, x, lowq, low, highq, high) \ | |
117efe06 FB |
237 | ({ \ |
238 | const typeof(x) UNIQ_T(X, xq) = (x); \ | |
239 | const typeof(low) UNIQ_T(LOW, lowq) = (low); \ | |
240 | const typeof(high) UNIQ_T(HIGH, highq) = (high); \ | |
241 | UNIQ_T(X, xq) > UNIQ_T(HIGH, highq) ? \ | |
242 | UNIQ_T(HIGH, highq) : \ | |
243 | UNIQ_T(X, xq) < UNIQ_T(LOW, lowq) ? \ | |
244 | UNIQ_T(LOW, lowq) : \ | |
245 | UNIQ_T(X, xq); \ | |
667a0377 | 246 | }) |
60918275 | 247 | |
180a60bc DH |
248 | /* [(x + y - 1) / y] suffers from an integer overflow, even though the |
249 | * computation should be possible in the given type. Therefore, we use | |
250 | * [x / y + !!(x % y)]. Note that on "Real CPUs" a division returns both the | |
251 | * quotient and the remainder, so both should be equally fast. */ | |
252 | #define DIV_ROUND_UP(_x, _y) \ | |
117efe06 | 253 | ({ \ |
180a60bc DH |
254 | const typeof(_x) __x = (_x); \ |
255 | const typeof(_y) __y = (_y); \ | |
256 | (__x / __y + !!(__x % __y)); \ | |
257 | }) | |
258 | ||
d9fb7afb FB |
259 | #ifdef __COVERITY__ |
260 | ||
261 | /* Use special definitions of assertion macros in order to prevent | |
262 | * false positives of ASSERT_SIDE_EFFECT on Coverity static analyzer | |
263 | * for uses of assert_se() and assert_return(). | |
264 | * | |
265 | * These definitions make expression go through a (trivial) function | |
266 | * call to ensure they are not discarded. Also use ! or !! to ensure | |
267 | * the boolean expressions are seen as such. | |
268 | * | |
269 | * This technique has been described and recommended in: | |
270 | * https://community.synopsys.com/s/question/0D534000046Yuzb/suppressing-assertsideeffect-for-functions-that-allow-for-sideeffects | |
271 | */ | |
272 | ||
273 | extern void __coverity_panic__(void); | |
274 | ||
275 | static inline int __coverity_check__(int condition) { | |
276 | return condition; | |
277 | } | |
278 | ||
279 | #define assert_message_se(expr, message) \ | |
280 | do { \ | |
281 | if (__coverity_check__(!(expr))) \ | |
282 | __coverity_panic__(); \ | |
283 | } while (false) | |
284 | ||
285 | #define assert_log(expr, message) __coverity_check__(!!(expr)) | |
286 | ||
287 | #else /* ! __COVERITY__ */ | |
288 | ||
34c38d2a | 289 | #define assert_message_se(expr, message) \ |
dd8f71ee | 290 | do { \ |
93a46b0b | 291 | if (_unlikely_(!(expr))) \ |
34c38d2a MS |
292 | log_assert_failed(message, __FILE__, __LINE__, __PRETTY_FUNCTION__); \ |
293 | } while (false) | |
294 | ||
d9fb7afb FB |
295 | #define assert_log(expr, message) ((_likely_(expr)) \ |
296 | ? (true) \ | |
297 | : (log_assert_failed_return(message, __FILE__, __LINE__, __PRETTY_FUNCTION__), false)) | |
298 | ||
299 | #endif /* __COVERITY__ */ | |
300 | ||
34c38d2a | 301 | #define assert_se(expr) assert_message_se(expr, #expr) |
dd8f71ee LP |
302 | |
303 | /* We override the glibc assert() here. */ | |
304 | #undef assert | |
305 | #ifdef NDEBUG | |
9ed794a3 | 306 | #define assert(expr) do {} while (false) |
dd8f71ee | 307 | #else |
34c38d2a | 308 | #define assert(expr) assert_message_se(expr, #expr) |
dd8f71ee | 309 | #endif |
60918275 | 310 | |
dd8f71ee LP |
311 | #define assert_not_reached(t) \ |
312 | do { \ | |
b7f33638 | 313 | log_assert_failed_unreachable(t, __FILE__, __LINE__, __PRETTY_FUNCTION__); \ |
dd8f71ee | 314 | } while (false) |
60918275 | 315 | |
f791c684 | 316 | #if defined(static_assert) |
7ebe131a LP |
317 | /* static_assert() is sometimes defined in a way that trips up |
318 | * -Wdeclaration-after-statement, hence let's temporarily turn off | |
319 | * this warning around it. */ | |
320 | #define assert_cc(expr) \ | |
321 | DISABLE_WARNING_DECLARATION_AFTER_STATEMENT; \ | |
322 | static_assert(expr, #expr); \ | |
323 | REENABLE_WARNING | |
f791c684 | 324 | #else |
7ebe131a LP |
325 | #define assert_cc(expr) \ |
326 | DISABLE_WARNING_DECLARATION_AFTER_STATEMENT; \ | |
6825a04d | 327 | struct CONCATENATE(_assert_struct_, __COUNTER__) { \ |
7ebe131a LP |
328 | char x[(expr) ? 0 : -1]; \ |
329 | }; \ | |
330 | REENABLE_WARNING | |
f791c684 | 331 | #endif |
60918275 | 332 | |
80514f9c LP |
333 | #define assert_return(expr, r) \ |
334 | do { \ | |
34c38d2a | 335 | if (!assert_log(expr, #expr)) \ |
80514f9c | 336 | return (r); \ |
18387b59 LP |
337 | } while (false) |
338 | ||
aa029628 TG |
339 | #define assert_return_errno(expr, r, err) \ |
340 | do { \ | |
34c38d2a | 341 | if (!assert_log(expr, #expr)) { \ |
aa029628 TG |
342 | errno = err; \ |
343 | return (r); \ | |
344 | } \ | |
345 | } while (false) | |
346 | ||
a3dc3547 KS |
347 | #define PTR_TO_INT(p) ((int) ((intptr_t) (p))) |
348 | #define INT_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
60918275 | 349 | #define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p))) |
a3dc3547 | 350 | #define UINT_TO_PTR(u) ((void *) ((uintptr_t) (u))) |
60918275 | 351 | |
a3dc3547 KS |
352 | #define PTR_TO_LONG(p) ((long) ((intptr_t) (p))) |
353 | #define LONG_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
c6c18be3 | 354 | #define PTR_TO_ULONG(p) ((unsigned long) ((uintptr_t) (p))) |
a3dc3547 | 355 | #define ULONG_TO_PTR(u) ((void *) ((uintptr_t) (u))) |
c6c18be3 | 356 | |
a3dc3547 KS |
357 | #define PTR_TO_INT32(p) ((int32_t) ((intptr_t) (p))) |
358 | #define INT32_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
359 | #define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p))) | |
360 | #define UINT32_TO_PTR(u) ((void *) ((uintptr_t) (u))) | |
60918275 | 361 | |
a3dc3547 KS |
362 | #define PTR_TO_INT64(p) ((int64_t) ((intptr_t) (p))) |
363 | #define INT64_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
364 | #define PTR_TO_UINT64(p) ((uint64_t) ((uintptr_t) (p))) | |
365 | #define UINT64_TO_PTR(u) ((void *) ((uintptr_t) (u))) | |
c6c18be3 | 366 | |
74b2466e LP |
367 | #define PTR_TO_SIZE(p) ((size_t) ((uintptr_t) (p))) |
368 | #define SIZE_TO_PTR(u) ((void *) ((uintptr_t) (u))) | |
369 | ||
a9c55a88 LP |
370 | #define CHAR_TO_STR(x) ((char[2]) { x, 0 }) |
371 | ||
034c6ed7 LP |
372 | #define char_array_0(x) x[sizeof(x)-1] = 0; |
373 | ||
fa70beaa LP |
374 | /* Returns the number of chars needed to format variables of the |
375 | * specified type as a decimal string. Adds in extra space for a | |
b7ce6b59 LP |
376 | * negative '-' prefix (hence works correctly on signed |
377 | * types). Includes space for the trailing NUL. */ | |
fa70beaa | 378 | #define DECIMAL_STR_MAX(type) \ |
5bcb0f2b | 379 | (2+(sizeof(type) <= 1 ? 3 : \ |
fa70beaa LP |
380 | sizeof(type) <= 2 ? 5 : \ |
381 | sizeof(type) <= 4 ? 10 : \ | |
382 | sizeof(type) <= 8 ? 20 : sizeof(int[-2*(sizeof(type) > 8)]))) | |
383 | ||
0d1dbeb3 LP |
384 | #define DECIMAL_STR_WIDTH(x) \ |
385 | ({ \ | |
386 | typeof(x) _x_ = (x); \ | |
387 | unsigned ans = 1; \ | |
ce2090ab | 388 | while ((_x_ /= 10) != 0) \ |
0d1dbeb3 LP |
389 | ans++; \ |
390 | ans; \ | |
391 | }) | |
392 | ||
264ad849 LP |
393 | #define SET_FLAG(v, flag, b) \ |
394 | (v) = (b) ? ((v) | (flag)) : ((v) & ~(flag)) | |
d94a24ca ZJS |
395 | #define FLAGS_SET(v, flags) \ |
396 | (((v) & (flags)) == (flags)) | |
264ad849 | 397 | |
d5b26d50 DM |
398 | #define CASE_F(X) case X: |
399 | #define CASE_F_1(CASE, X) CASE_F(X) | |
400 | #define CASE_F_2(CASE, X, ...) CASE(X) CASE_F_1(CASE, __VA_ARGS__) | |
401 | #define CASE_F_3(CASE, X, ...) CASE(X) CASE_F_2(CASE, __VA_ARGS__) | |
402 | #define CASE_F_4(CASE, X, ...) CASE(X) CASE_F_3(CASE, __VA_ARGS__) | |
403 | #define CASE_F_5(CASE, X, ...) CASE(X) CASE_F_4(CASE, __VA_ARGS__) | |
404 | #define CASE_F_6(CASE, X, ...) CASE(X) CASE_F_5(CASE, __VA_ARGS__) | |
405 | #define CASE_F_7(CASE, X, ...) CASE(X) CASE_F_6(CASE, __VA_ARGS__) | |
406 | #define CASE_F_8(CASE, X, ...) CASE(X) CASE_F_7(CASE, __VA_ARGS__) | |
407 | #define CASE_F_9(CASE, X, ...) CASE(X) CASE_F_8(CASE, __VA_ARGS__) | |
408 | #define CASE_F_10(CASE, X, ...) CASE(X) CASE_F_9(CASE, __VA_ARGS__) | |
409 | #define CASE_F_11(CASE, X, ...) CASE(X) CASE_F_10(CASE, __VA_ARGS__) | |
410 | #define CASE_F_12(CASE, X, ...) CASE(X) CASE_F_11(CASE, __VA_ARGS__) | |
411 | #define CASE_F_13(CASE, X, ...) CASE(X) CASE_F_12(CASE, __VA_ARGS__) | |
412 | #define CASE_F_14(CASE, X, ...) CASE(X) CASE_F_13(CASE, __VA_ARGS__) | |
413 | #define CASE_F_15(CASE, X, ...) CASE(X) CASE_F_14(CASE, __VA_ARGS__) | |
414 | #define CASE_F_16(CASE, X, ...) CASE(X) CASE_F_15(CASE, __VA_ARGS__) | |
415 | #define CASE_F_17(CASE, X, ...) CASE(X) CASE_F_16(CASE, __VA_ARGS__) | |
416 | #define CASE_F_18(CASE, X, ...) CASE(X) CASE_F_17(CASE, __VA_ARGS__) | |
417 | #define CASE_F_19(CASE, X, ...) CASE(X) CASE_F_18(CASE, __VA_ARGS__) | |
418 | #define CASE_F_20(CASE, X, ...) CASE(X) CASE_F_19(CASE, __VA_ARGS__) | |
419 | ||
420 | #define GET_CASE_F(_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16,_17,_18,_19,_20,NAME,...) NAME | |
421 | #define FOR_EACH_MAKE_CASE(...) \ | |
422 | GET_CASE_F(__VA_ARGS__,CASE_F_20,CASE_F_19,CASE_F_18,CASE_F_17,CASE_F_16,CASE_F_15,CASE_F_14,CASE_F_13,CASE_F_12,CASE_F_11, \ | |
423 | CASE_F_10,CASE_F_9,CASE_F_8,CASE_F_7,CASE_F_6,CASE_F_5,CASE_F_4,CASE_F_3,CASE_F_2,CASE_F_1) \ | |
424 | (CASE_F,__VA_ARGS__) | |
425 | ||
426 | #define IN_SET(x, ...) \ | |
427 | ({ \ | |
428 | bool _found = false; \ | |
429 | /* If the build breaks in the line below, you need to extend the case macros */ \ | |
430 | static _unused_ char _static_assert__macros_need_to_be_extended[20 - sizeof((int[]){__VA_ARGS__})/sizeof(int)]; \ | |
431 | switch(x) { \ | |
432 | FOR_EACH_MAKE_CASE(__VA_ARGS__) \ | |
433 | _found = true; \ | |
434 | break; \ | |
435 | default: \ | |
436 | break; \ | |
437 | } \ | |
438 | _found; \ | |
cabb7806 LP |
439 | }) |
440 | ||
35aa04e9 LP |
441 | #define SWAP_TWO(x, y) do { \ |
442 | typeof(x) _t = (x); \ | |
443 | (x) = (y); \ | |
444 | (y) = (_t); \ | |
445 | } while (false) | |
446 | ||
919ce0b7 SL |
447 | /* Define C11 thread_local attribute even on older gcc compiler |
448 | * version */ | |
ec202eae SL |
449 | #ifndef thread_local |
450 | /* | |
451 | * Don't break on glibc < 2.16 that doesn't define __STDC_NO_THREADS__ | |
452 | * see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53769 | |
453 | */ | |
454 | #if __STDC_VERSION__ >= 201112L && !(defined(__STDC_NO_THREADS__) || (defined(__GNU_LIBRARY__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 16)) | |
455 | #define thread_local _Thread_local | |
456 | #else | |
457 | #define thread_local __thread | |
458 | #endif | |
459 | #endif | |
cabb7806 | 460 | |
a2341f68 ZJS |
461 | #define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func) \ |
462 | static inline void func##p(type *p) { \ | |
463 | if (*p) \ | |
464 | func(*p); \ | |
f6a8265b | 465 | } |
a2341f68 | 466 | |
dd8f71ee | 467 | #include "log.h" |