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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
c2f1db8f | 2 | #pragma once |
60918275 | 3 | |
7e61bd0f | 4 | #include <assert.h> |
c31e1495 | 5 | #include <inttypes.h> |
c01ff965 | 6 | #include <stdbool.h> |
afc5dbf3 | 7 | #include <sys/param.h> |
27d13af7 | 8 | #include <sys/sysmacros.h> |
afc5dbf3 | 9 | #include <sys/types.h> |
60918275 | 10 | |
2ee1c55d | 11 | #define _printf_(a, b) __attribute__((__format__(printf, a, b))) |
26e9e10b ZJS |
12 | #ifdef __clang__ |
13 | # define _alloc_(...) | |
14 | #else | |
2ee1c55d | 15 | # define _alloc_(...) __attribute__((__alloc_size__(__VA_ARGS__))) |
26e9e10b | 16 | #endif |
2ee1c55d | 17 | #define _sentinel_ __attribute__((__sentinel__)) |
d752090f LP |
18 | #define _section_(x) __attribute__((__section__(x))) |
19 | #define _used_ __attribute__((__used__)) | |
2ee1c55d LP |
20 | #define _unused_ __attribute__((__unused__)) |
21 | #define _destructor_ __attribute__((__destructor__)) | |
22 | #define _pure_ __attribute__((__pure__)) | |
23 | #define _const_ __attribute__((__const__)) | |
24 | #define _deprecated_ __attribute__((__deprecated__)) | |
25 | #define _packed_ __attribute__((__packed__)) | |
26 | #define _malloc_ __attribute__((__malloc__)) | |
27 | #define _weak_ __attribute__((__weak__)) | |
117efe06 FB |
28 | #define _likely_(x) (__builtin_expect(!!(x), 1)) |
29 | #define _unlikely_(x) (__builtin_expect(!!(x), 0)) | |
2ee1c55d LP |
30 | #define _public_ __attribute__((__visibility__("default"))) |
31 | #define _hidden_ __attribute__((__visibility__("hidden"))) | |
012c2f76 | 32 | #define _weakref_(x) __attribute__((__weakref__(#x))) |
d752090f | 33 | #define _align_(x) __attribute__((__aligned__(x))) |
012c2f76 | 34 | #define _alignas_(x) __attribute__((__aligned__(__alignof(x)))) |
d752090f | 35 | #define _alignptr_ __attribute__((__aligned__(sizeof(void*)))) |
012c2f76 | 36 | #define _cleanup_(x) __attribute__((__cleanup__(x))) |
fb8e74a4 | 37 | #if __GNUC__ >= 7 |
012c2f76 | 38 | #define _fallthrough_ __attribute__((__fallthrough__)) |
fb8e74a4 SL |
39 | #else |
40 | #define _fallthrough_ | |
41 | #endif | |
848e863a FB |
42 | /* Define C11 noreturn without <stdnoreturn.h> and even on older gcc |
43 | * compiler versions */ | |
44 | #ifndef _noreturn_ | |
45 | #if __STDC_VERSION__ >= 201112L | |
46 | #define _noreturn_ _Noreturn | |
47 | #else | |
012c2f76 | 48 | #define _noreturn_ __attribute__((__noreturn__)) |
848e863a FB |
49 | #endif |
50 | #endif | |
60918275 | 51 | |
989290db ZJS |
52 | #if !defined(HAS_FEATURE_MEMORY_SANITIZER) |
53 | # if defined(__has_feature) | |
54 | # if __has_feature(memory_sanitizer) | |
55 | # define HAS_FEATURE_MEMORY_SANITIZER 1 | |
56 | # endif | |
57 | # endif | |
58 | # if !defined(HAS_FEATURE_MEMORY_SANITIZER) | |
59 | # define HAS_FEATURE_MEMORY_SANITIZER 0 | |
60 | # endif | |
61 | #endif | |
62 | ||
289acab9 EV |
63 | #if !defined(HAS_FEATURE_ADDRESS_SANITIZER) |
64 | # if defined(__has_feature) | |
65 | # if __has_feature(address_sanitizer) | |
66 | # define HAS_FEATURE_ADDRESS_SANITIZER 1 | |
67 | # endif | |
68 | # endif | |
69 | # if !defined(HAS_FEATURE_ADDRESS_SANITIZER) | |
70 | # define HAS_FEATURE_ADDRESS_SANITIZER 0 | |
71 | # endif | |
72 | #endif | |
73 | ||
7ebe131a | 74 | /* Temporarily disable some warnings */ |
bcfce235 LP |
75 | #define DISABLE_WARNING_FORMAT_NONLITERAL \ |
76 | _Pragma("GCC diagnostic push"); \ | |
77 | _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"") | |
78 | ||
f0f2e63b LP |
79 | #define DISABLE_WARNING_MISSING_PROTOTYPES \ |
80 | _Pragma("GCC diagnostic push"); \ | |
81 | _Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"") | |
82 | ||
8fca4e30 LP |
83 | #define DISABLE_WARNING_NONNULL \ |
84 | _Pragma("GCC diagnostic push"); \ | |
85 | _Pragma("GCC diagnostic ignored \"-Wnonnull\"") | |
86 | ||
d442e2ec DH |
87 | #define DISABLE_WARNING_SHADOW \ |
88 | _Pragma("GCC diagnostic push"); \ | |
89 | _Pragma("GCC diagnostic ignored \"-Wshadow\"") | |
90 | ||
df99a9ef ZJS |
91 | #define DISABLE_WARNING_INCOMPATIBLE_POINTER_TYPES \ |
92 | _Pragma("GCC diagnostic push"); \ | |
93 | _Pragma("GCC diagnostic ignored \"-Wincompatible-pointer-types\"") | |
94 | ||
7ebe131a LP |
95 | #define REENABLE_WARNING \ |
96 | _Pragma("GCC diagnostic pop") | |
97 | ||
49e5de64 ZJS |
98 | /* automake test harness */ |
99 | #define EXIT_TEST_SKIP 77 | |
100 | ||
bef2733f LP |
101 | #define XSTRINGIFY(x) #x |
102 | #define STRINGIFY(x) XSTRINGIFY(x) | |
103 | ||
ab9cbe34 LS |
104 | #define XCONCATENATE(x, y) x ## y |
105 | #define CONCATENATE(x, y) XCONCATENATE(x, y) | |
106 | ||
fb835651 DH |
107 | #define UNIQ_T(x, uniq) CONCATENATE(__unique_prefix_, CONCATENATE(x, uniq)) |
108 | #define UNIQ __COUNTER__ | |
109 | ||
13b498f9 TJ |
110 | /* builtins */ |
111 | #if __SIZEOF_INT__ == 4 | |
112 | #define BUILTIN_FFS_U32(x) __builtin_ffs(x); | |
113 | #elif __SIZEOF_LONG__ == 4 | |
114 | #define BUILTIN_FFS_U32(x) __builtin_ffsl(x); | |
115 | #else | |
116 | #error "neither int nor long are four bytes long?!?" | |
117 | #endif | |
118 | ||
60918275 | 119 | /* Rounds up */ |
9be9c7cf LP |
120 | |
121 | #define ALIGN4(l) (((l) + 3) & ~3) | |
122 | #define ALIGN8(l) (((l) + 7) & ~7) | |
123 | ||
124 | #if __SIZEOF_POINTER__ == 8 | |
125 | #define ALIGN(l) ALIGN8(l) | |
126 | #elif __SIZEOF_POINTER__ == 4 | |
127 | #define ALIGN(l) ALIGN4(l) | |
128 | #else | |
129 | #error "Wut? Pointers are neither 4 nor 8 bytes long?" | |
130 | #endif | |
131 | ||
5f86c1f4 LP |
132 | #define ALIGN_PTR(p) ((void*) ALIGN((unsigned long) (p))) |
133 | #define ALIGN4_PTR(p) ((void*) ALIGN4((unsigned long) (p))) | |
134 | #define ALIGN8_PTR(p) ((void*) ALIGN8((unsigned long) (p))) | |
e86b80b8 | 135 | |
37f85e66 | 136 | static inline size_t ALIGN_TO(size_t l, size_t ali) { |
137 | return ((l + ali - 1) & ~(ali - 1)); | |
22be093f LP |
138 | } |
139 | ||
5f86c1f4 | 140 | #define ALIGN_TO_PTR(p, ali) ((void*) ALIGN_TO((unsigned long) (p), (ali))) |
49aa47c7 | 141 | |
625e870b DH |
142 | /* align to next higher power-of-2 (except for: 0 => 0, overflow => 0) */ |
143 | static inline unsigned long ALIGN_POWER2(unsigned long u) { | |
144 | /* clz(0) is undefined */ | |
145 | if (u == 1) | |
146 | return 1; | |
147 | ||
148 | /* left-shift overflow is undefined */ | |
149 | if (__builtin_clzl(u - 1UL) < 1) | |
150 | return 0; | |
151 | ||
152 | return 1UL << (sizeof(u) * 8 - __builtin_clzl(u - 1UL)); | |
153 | } | |
154 | ||
963c6c90 ZJS |
155 | #ifndef __COVERITY__ |
156 | # define VOID_0 ((void)0) | |
157 | #else | |
158 | # define VOID_0 ((void*)0) | |
159 | #endif | |
160 | ||
117efe06 FB |
161 | #define ELEMENTSOF(x) \ |
162 | (__builtin_choose_expr( \ | |
7f39a210 | 163 | !__builtin_types_compatible_p(typeof(x), typeof(&*(x))), \ |
117efe06 | 164 | sizeof(x)/sizeof((x)[0]), \ |
963c6c90 | 165 | VOID_0)) |
6febe75d TH |
166 | |
167 | /* | |
168 | * STRLEN - return the length of a string literal, minus the trailing NUL byte. | |
169 | * Contrary to strlen(), this is a constant expression. | |
170 | * @x: a string literal. | |
171 | */ | |
172 | #define STRLEN(x) (sizeof(""x"") - 1) | |
173 | ||
bbc98d32 KS |
174 | /* |
175 | * container_of - cast a member of a structure out to the containing structure | |
176 | * @ptr: the pointer to the member. | |
177 | * @type: the type of the container struct this is embedded in. | |
178 | * @member: the name of the member within the struct. | |
bbc98d32 | 179 | */ |
fb835651 DH |
180 | #define container_of(ptr, type, member) __container_of(UNIQ, (ptr), type, member) |
181 | #define __container_of(uniq, ptr, type, member) \ | |
117efe06 | 182 | ({ \ |
fb835651 | 183 | const typeof( ((type*)0)->member ) *UNIQ_T(A, uniq) = (ptr); \ |
117efe06 | 184 | (type*)( (char *)UNIQ_T(A, uniq) - offsetof(type, member) ); \ |
fb835651 | 185 | }) |
bbc98d32 | 186 | |
9607d947 | 187 | #undef MAX |
667a0377 DH |
188 | #define MAX(a, b) __MAX(UNIQ, (a), UNIQ, (b)) |
189 | #define __MAX(aq, a, bq, b) \ | |
117efe06 | 190 | ({ \ |
667a0377 DH |
191 | const typeof(a) UNIQ_T(A, aq) = (a); \ |
192 | const typeof(b) UNIQ_T(B, bq) = (b); \ | |
117efe06 | 193 | UNIQ_T(A, aq) > UNIQ_T(B, bq) ? UNIQ_T(A, aq) : UNIQ_T(B, bq); \ |
667a0377 | 194 | }) |
60918275 | 195 | |
7242d742 DH |
196 | /* evaluates to (void) if _A or _B are not constant or of different types */ |
197 | #define CONST_MAX(_A, _B) \ | |
117efe06 | 198 | (__builtin_choose_expr( \ |
7242d742 DH |
199 | __builtin_constant_p(_A) && \ |
200 | __builtin_constant_p(_B) && \ | |
201 | __builtin_types_compatible_p(typeof(_A), typeof(_B)), \ | |
202 | ((_A) > (_B)) ? (_A) : (_B), \ | |
963c6c90 | 203 | VOID_0)) |
7242d742 | 204 | |
40a1eebd DH |
205 | /* takes two types and returns the size of the larger one */ |
206 | #define MAXSIZE(A, B) (sizeof(union _packed_ { typeof(A) a; typeof(B) b; })) | |
207 | ||
117efe06 FB |
208 | #define MAX3(x, y, z) \ |
209 | ({ \ | |
210 | const typeof(x) _c = MAX(x, y); \ | |
211 | MAX(_c, z); \ | |
212 | }) | |
3b63d2d3 | 213 | |
9607d947 | 214 | #undef MIN |
667a0377 DH |
215 | #define MIN(a, b) __MIN(UNIQ, (a), UNIQ, (b)) |
216 | #define __MIN(aq, a, bq, b) \ | |
117efe06 | 217 | ({ \ |
667a0377 DH |
218 | const typeof(a) UNIQ_T(A, aq) = (a); \ |
219 | const typeof(b) UNIQ_T(B, bq) = (b); \ | |
117efe06 | 220 | UNIQ_T(A, aq) < UNIQ_T(B, bq) ? UNIQ_T(A, aq) : UNIQ_T(B, bq); \ |
667a0377 | 221 | }) |
60918275 | 222 | |
117efe06 FB |
223 | #define MIN3(x, y, z) \ |
224 | ({ \ | |
225 | const typeof(x) _c = MIN(x, y); \ | |
226 | MIN(_c, z); \ | |
227 | }) | |
7df23077 | 228 | |
667a0377 DH |
229 | #define LESS_BY(a, b) __LESS_BY(UNIQ, (a), UNIQ, (b)) |
230 | #define __LESS_BY(aq, a, bq, b) \ | |
117efe06 | 231 | ({ \ |
667a0377 DH |
232 | const typeof(a) UNIQ_T(A, aq) = (a); \ |
233 | const typeof(b) UNIQ_T(B, bq) = (b); \ | |
117efe06 | 234 | UNIQ_T(A, aq) > UNIQ_T(B, bq) ? UNIQ_T(A, aq) - UNIQ_T(B, bq) : 0; \ |
667a0377 | 235 | }) |
348ced90 | 236 | |
84fb2131 FB |
237 | #define CMP(a, b) __CMP(UNIQ, (a), UNIQ, (b)) |
238 | #define __CMP(aq, a, bq, b) \ | |
239 | ({ \ | |
240 | const typeof(a) UNIQ_T(A, aq) = (a); \ | |
241 | const typeof(b) UNIQ_T(B, bq) = (b); \ | |
242 | UNIQ_T(A, aq) < UNIQ_T(B, bq) ? -1 : \ | |
243 | UNIQ_T(A, aq) > UNIQ_T(B, bq) ? 1 : 0; \ | |
244 | }) | |
245 | ||
667a0377 DH |
246 | #undef CLAMP |
247 | #define CLAMP(x, low, high) __CLAMP(UNIQ, (x), UNIQ, (low), UNIQ, (high)) | |
248 | #define __CLAMP(xq, x, lowq, low, highq, high) \ | |
117efe06 FB |
249 | ({ \ |
250 | const typeof(x) UNIQ_T(X, xq) = (x); \ | |
251 | const typeof(low) UNIQ_T(LOW, lowq) = (low); \ | |
252 | const typeof(high) UNIQ_T(HIGH, highq) = (high); \ | |
253 | UNIQ_T(X, xq) > UNIQ_T(HIGH, highq) ? \ | |
254 | UNIQ_T(HIGH, highq) : \ | |
255 | UNIQ_T(X, xq) < UNIQ_T(LOW, lowq) ? \ | |
256 | UNIQ_T(LOW, lowq) : \ | |
257 | UNIQ_T(X, xq); \ | |
667a0377 | 258 | }) |
60918275 | 259 | |
180a60bc DH |
260 | /* [(x + y - 1) / y] suffers from an integer overflow, even though the |
261 | * computation should be possible in the given type. Therefore, we use | |
262 | * [x / y + !!(x % y)]. Note that on "Real CPUs" a division returns both the | |
263 | * quotient and the remainder, so both should be equally fast. */ | |
8a453c9d LP |
264 | #define DIV_ROUND_UP(x, y) __DIV_ROUND_UP(UNIQ, (x), UNIQ, (y)) |
265 | #define __DIV_ROUND_UP(xq, x, yq, y) \ | |
117efe06 | 266 | ({ \ |
8a453c9d LP |
267 | const typeof(x) UNIQ_T(X, xq) = (x); \ |
268 | const typeof(y) UNIQ_T(Y, yq) = (y); \ | |
269 | (UNIQ_T(X, xq) / UNIQ_T(Y, yq) + !!(UNIQ_T(X, xq) % UNIQ_T(Y, yq))); \ | |
180a60bc DH |
270 | }) |
271 | ||
d9fb7afb FB |
272 | #ifdef __COVERITY__ |
273 | ||
274 | /* Use special definitions of assertion macros in order to prevent | |
275 | * false positives of ASSERT_SIDE_EFFECT on Coverity static analyzer | |
276 | * for uses of assert_se() and assert_return(). | |
277 | * | |
278 | * These definitions make expression go through a (trivial) function | |
279 | * call to ensure they are not discarded. Also use ! or !! to ensure | |
280 | * the boolean expressions are seen as such. | |
281 | * | |
282 | * This technique has been described and recommended in: | |
283 | * https://community.synopsys.com/s/question/0D534000046Yuzb/suppressing-assertsideeffect-for-functions-that-allow-for-sideeffects | |
284 | */ | |
285 | ||
286 | extern void __coverity_panic__(void); | |
287 | ||
288 | static inline int __coverity_check__(int condition) { | |
289 | return condition; | |
290 | } | |
291 | ||
292 | #define assert_message_se(expr, message) \ | |
293 | do { \ | |
294 | if (__coverity_check__(!(expr))) \ | |
295 | __coverity_panic__(); \ | |
296 | } while (false) | |
297 | ||
298 | #define assert_log(expr, message) __coverity_check__(!!(expr)) | |
299 | ||
300 | #else /* ! __COVERITY__ */ | |
301 | ||
34c38d2a | 302 | #define assert_message_se(expr, message) \ |
dd8f71ee | 303 | do { \ |
93a46b0b | 304 | if (_unlikely_(!(expr))) \ |
34c38d2a MS |
305 | log_assert_failed(message, __FILE__, __LINE__, __PRETTY_FUNCTION__); \ |
306 | } while (false) | |
307 | ||
d9fb7afb FB |
308 | #define assert_log(expr, message) ((_likely_(expr)) \ |
309 | ? (true) \ | |
310 | : (log_assert_failed_return(message, __FILE__, __LINE__, __PRETTY_FUNCTION__), false)) | |
311 | ||
312 | #endif /* __COVERITY__ */ | |
313 | ||
34c38d2a | 314 | #define assert_se(expr) assert_message_se(expr, #expr) |
dd8f71ee LP |
315 | |
316 | /* We override the glibc assert() here. */ | |
317 | #undef assert | |
318 | #ifdef NDEBUG | |
9ed794a3 | 319 | #define assert(expr) do {} while (false) |
dd8f71ee | 320 | #else |
34c38d2a | 321 | #define assert(expr) assert_message_se(expr, #expr) |
dd8f71ee | 322 | #endif |
60918275 | 323 | |
dd8f71ee LP |
324 | #define assert_not_reached(t) \ |
325 | do { \ | |
b7f33638 | 326 | log_assert_failed_unreachable(t, __FILE__, __LINE__, __PRETTY_FUNCTION__); \ |
dd8f71ee | 327 | } while (false) |
60918275 | 328 | |
f791c684 | 329 | #if defined(static_assert) |
7ebe131a | 330 | #define assert_cc(expr) \ |
696c0b89 | 331 | static_assert(expr, #expr); |
f791c684 | 332 | #else |
7ebe131a | 333 | #define assert_cc(expr) \ |
6825a04d | 334 | struct CONCATENATE(_assert_struct_, __COUNTER__) { \ |
7ebe131a | 335 | char x[(expr) ? 0 : -1]; \ |
696c0b89 | 336 | }; |
f791c684 | 337 | #endif |
60918275 | 338 | |
80514f9c LP |
339 | #define assert_return(expr, r) \ |
340 | do { \ | |
34c38d2a | 341 | if (!assert_log(expr, #expr)) \ |
80514f9c | 342 | return (r); \ |
18387b59 LP |
343 | } while (false) |
344 | ||
aa029628 TG |
345 | #define assert_return_errno(expr, r, err) \ |
346 | do { \ | |
34c38d2a | 347 | if (!assert_log(expr, #expr)) { \ |
aa029628 TG |
348 | errno = err; \ |
349 | return (r); \ | |
350 | } \ | |
351 | } while (false) | |
352 | ||
fd05c424 YW |
353 | #define return_with_errno(r, err) \ |
354 | do { \ | |
355 | errno = abs(err); \ | |
356 | return r; \ | |
357 | } while (false) | |
358 | ||
a3dc3547 KS |
359 | #define PTR_TO_INT(p) ((int) ((intptr_t) (p))) |
360 | #define INT_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
14cb109d | 361 | #define PTR_TO_UINT(p) ((unsigned) ((uintptr_t) (p))) |
a3dc3547 | 362 | #define UINT_TO_PTR(u) ((void *) ((uintptr_t) (u))) |
60918275 | 363 | |
a3dc3547 KS |
364 | #define PTR_TO_LONG(p) ((long) ((intptr_t) (p))) |
365 | #define LONG_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
c6c18be3 | 366 | #define PTR_TO_ULONG(p) ((unsigned long) ((uintptr_t) (p))) |
a3dc3547 | 367 | #define ULONG_TO_PTR(u) ((void *) ((uintptr_t) (u))) |
c6c18be3 | 368 | |
a3dc3547 KS |
369 | #define PTR_TO_INT32(p) ((int32_t) ((intptr_t) (p))) |
370 | #define INT32_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
371 | #define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p))) | |
372 | #define UINT32_TO_PTR(u) ((void *) ((uintptr_t) (u))) | |
60918275 | 373 | |
a3dc3547 KS |
374 | #define PTR_TO_INT64(p) ((int64_t) ((intptr_t) (p))) |
375 | #define INT64_TO_PTR(u) ((void *) ((intptr_t) (u))) | |
376 | #define PTR_TO_UINT64(p) ((uint64_t) ((uintptr_t) (p))) | |
377 | #define UINT64_TO_PTR(u) ((void *) ((uintptr_t) (u))) | |
c6c18be3 | 378 | |
74b2466e LP |
379 | #define PTR_TO_SIZE(p) ((size_t) ((uintptr_t) (p))) |
380 | #define SIZE_TO_PTR(u) ((void *) ((uintptr_t) (u))) | |
381 | ||
a9c55a88 LP |
382 | #define CHAR_TO_STR(x) ((char[2]) { x, 0 }) |
383 | ||
034c6ed7 LP |
384 | #define char_array_0(x) x[sizeof(x)-1] = 0; |
385 | ||
fa70beaa LP |
386 | /* Returns the number of chars needed to format variables of the |
387 | * specified type as a decimal string. Adds in extra space for a | |
b7ce6b59 LP |
388 | * negative '-' prefix (hence works correctly on signed |
389 | * types). Includes space for the trailing NUL. */ | |
fa70beaa | 390 | #define DECIMAL_STR_MAX(type) \ |
5bcb0f2b | 391 | (2+(sizeof(type) <= 1 ? 3 : \ |
fa70beaa LP |
392 | sizeof(type) <= 2 ? 5 : \ |
393 | sizeof(type) <= 4 ? 10 : \ | |
394 | sizeof(type) <= 8 ? 20 : sizeof(int[-2*(sizeof(type) > 8)]))) | |
395 | ||
0d1dbeb3 LP |
396 | #define DECIMAL_STR_WIDTH(x) \ |
397 | ({ \ | |
398 | typeof(x) _x_ = (x); \ | |
399 | unsigned ans = 1; \ | |
ce2090ab | 400 | while ((_x_ /= 10) != 0) \ |
0d1dbeb3 LP |
401 | ans++; \ |
402 | ans; \ | |
403 | }) | |
404 | ||
264ad849 LP |
405 | #define SET_FLAG(v, flag, b) \ |
406 | (v) = (b) ? ((v) | (flag)) : ((v) & ~(flag)) | |
d94a24ca | 407 | #define FLAGS_SET(v, flags) \ |
222c8d4e | 408 | ((~(v) & (flags)) == 0) |
264ad849 | 409 | |
d5b26d50 DM |
410 | #define CASE_F(X) case X: |
411 | #define CASE_F_1(CASE, X) CASE_F(X) | |
412 | #define CASE_F_2(CASE, X, ...) CASE(X) CASE_F_1(CASE, __VA_ARGS__) | |
413 | #define CASE_F_3(CASE, X, ...) CASE(X) CASE_F_2(CASE, __VA_ARGS__) | |
414 | #define CASE_F_4(CASE, X, ...) CASE(X) CASE_F_3(CASE, __VA_ARGS__) | |
415 | #define CASE_F_5(CASE, X, ...) CASE(X) CASE_F_4(CASE, __VA_ARGS__) | |
416 | #define CASE_F_6(CASE, X, ...) CASE(X) CASE_F_5(CASE, __VA_ARGS__) | |
417 | #define CASE_F_7(CASE, X, ...) CASE(X) CASE_F_6(CASE, __VA_ARGS__) | |
418 | #define CASE_F_8(CASE, X, ...) CASE(X) CASE_F_7(CASE, __VA_ARGS__) | |
419 | #define CASE_F_9(CASE, X, ...) CASE(X) CASE_F_8(CASE, __VA_ARGS__) | |
420 | #define CASE_F_10(CASE, X, ...) CASE(X) CASE_F_9(CASE, __VA_ARGS__) | |
421 | #define CASE_F_11(CASE, X, ...) CASE(X) CASE_F_10(CASE, __VA_ARGS__) | |
422 | #define CASE_F_12(CASE, X, ...) CASE(X) CASE_F_11(CASE, __VA_ARGS__) | |
423 | #define CASE_F_13(CASE, X, ...) CASE(X) CASE_F_12(CASE, __VA_ARGS__) | |
424 | #define CASE_F_14(CASE, X, ...) CASE(X) CASE_F_13(CASE, __VA_ARGS__) | |
425 | #define CASE_F_15(CASE, X, ...) CASE(X) CASE_F_14(CASE, __VA_ARGS__) | |
426 | #define CASE_F_16(CASE, X, ...) CASE(X) CASE_F_15(CASE, __VA_ARGS__) | |
427 | #define CASE_F_17(CASE, X, ...) CASE(X) CASE_F_16(CASE, __VA_ARGS__) | |
428 | #define CASE_F_18(CASE, X, ...) CASE(X) CASE_F_17(CASE, __VA_ARGS__) | |
429 | #define CASE_F_19(CASE, X, ...) CASE(X) CASE_F_18(CASE, __VA_ARGS__) | |
430 | #define CASE_F_20(CASE, X, ...) CASE(X) CASE_F_19(CASE, __VA_ARGS__) | |
431 | ||
432 | #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 | |
433 | #define FOR_EACH_MAKE_CASE(...) \ | |
434 | 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, \ | |
435 | 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) \ | |
436 | (CASE_F,__VA_ARGS__) | |
437 | ||
438 | #define IN_SET(x, ...) \ | |
439 | ({ \ | |
440 | bool _found = false; \ | |
8e2b6879 LP |
441 | /* If the build breaks in the line below, you need to extend the case macros. (We use "long double" as \ |
442 | * type for the array, in the hope that checkers such as ubsan don't complain that the initializers for \ | |
443 | * the array are not representable by the base type. Ideally we'd use typeof(x) as base type, but that \ | |
444 | * doesn't work, as we want to use this on bitfields and gcc refuses typeof() on bitfields.) */ \ | |
445 | assert_cc((sizeof((long double[]){__VA_ARGS__})/sizeof(long double)) <= 20); \ | |
d5b26d50 DM |
446 | switch(x) { \ |
447 | FOR_EACH_MAKE_CASE(__VA_ARGS__) \ | |
448 | _found = true; \ | |
449 | break; \ | |
450 | default: \ | |
451 | break; \ | |
452 | } \ | |
453 | _found; \ | |
cabb7806 LP |
454 | }) |
455 | ||
35aa04e9 LP |
456 | #define SWAP_TWO(x, y) do { \ |
457 | typeof(x) _t = (x); \ | |
458 | (x) = (y); \ | |
459 | (y) = (_t); \ | |
460 | } while (false) | |
461 | ||
919ce0b7 SL |
462 | /* Define C11 thread_local attribute even on older gcc compiler |
463 | * version */ | |
ec202eae SL |
464 | #ifndef thread_local |
465 | /* | |
466 | * Don't break on glibc < 2.16 that doesn't define __STDC_NO_THREADS__ | |
467 | * see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53769 | |
468 | */ | |
469 | #if __STDC_VERSION__ >= 201112L && !(defined(__STDC_NO_THREADS__) || (defined(__GNU_LIBRARY__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 16)) | |
470 | #define thread_local _Thread_local | |
471 | #else | |
472 | #define thread_local __thread | |
473 | #endif | |
474 | #endif | |
cabb7806 | 475 | |
a2341f68 ZJS |
476 | #define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func) \ |
477 | static inline void func##p(type *p) { \ | |
478 | if (*p) \ | |
479 | func(*p); \ | |
f6a8265b | 480 | } |
a2341f68 | 481 | |
a6a08596 YW |
482 | #define _DEFINE_TRIVIAL_REF_FUNC(type, name, scope) \ |
483 | scope type *name##_ref(type *p) { \ | |
484 | if (!p) \ | |
485 | return NULL; \ | |
486 | \ | |
487 | assert(p->n_ref > 0); \ | |
488 | p->n_ref++; \ | |
489 | return p; \ | |
490 | } | |
491 | ||
492 | #define _DEFINE_TRIVIAL_UNREF_FUNC(type, name, free_func, scope) \ | |
493 | scope type *name##_unref(type *p) { \ | |
494 | if (!p) \ | |
495 | return NULL; \ | |
496 | \ | |
497 | assert(p->n_ref > 0); \ | |
498 | p->n_ref--; \ | |
499 | if (p->n_ref > 0) \ | |
500 | return NULL; \ | |
501 | \ | |
502 | return free_func(p); \ | |
503 | } | |
504 | ||
505 | #define DEFINE_TRIVIAL_REF_FUNC(type, name) \ | |
506 | _DEFINE_TRIVIAL_REF_FUNC(type, name,) | |
507 | #define DEFINE_PRIVATE_TRIVIAL_REF_FUNC(type, name) \ | |
508 | _DEFINE_TRIVIAL_REF_FUNC(type, name, static) | |
509 | #define DEFINE_PUBLIC_TRIVIAL_REF_FUNC(type, name) \ | |
510 | _DEFINE_TRIVIAL_REF_FUNC(type, name, _public_) | |
511 | ||
512 | #define DEFINE_TRIVIAL_UNREF_FUNC(type, name, free_func) \ | |
513 | _DEFINE_TRIVIAL_UNREF_FUNC(type, name, free_func,) | |
514 | #define DEFINE_PRIVATE_TRIVIAL_UNREF_FUNC(type, name, free_func) \ | |
515 | _DEFINE_TRIVIAL_UNREF_FUNC(type, name, free_func, static) | |
516 | #define DEFINE_PUBLIC_TRIVIAL_UNREF_FUNC(type, name, free_func) \ | |
517 | _DEFINE_TRIVIAL_UNREF_FUNC(type, name, free_func, _public_) | |
518 | ||
519 | #define DEFINE_TRIVIAL_REF_UNREF_FUNC(type, name, free_func) \ | |
520 | DEFINE_TRIVIAL_REF_FUNC(type, name); \ | |
521 | DEFINE_TRIVIAL_UNREF_FUNC(type, name, free_func); | |
522 | ||
523 | #define DEFINE_PRIVATE_TRIVIAL_REF_UNREF_FUNC(type, name, free_func) \ | |
524 | DEFINE_PRIVATE_TRIVIAL_REF_FUNC(type, name); \ | |
525 | DEFINE_PRIVATE_TRIVIAL_UNREF_FUNC(type, name, free_func); | |
526 | ||
527 | #define DEFINE_PUBLIC_TRIVIAL_REF_UNREF_FUNC(type, name, free_func) \ | |
528 | DEFINE_PUBLIC_TRIVIAL_REF_FUNC(type, name); \ | |
529 | DEFINE_PUBLIC_TRIVIAL_UNREF_FUNC(type, name, free_func); | |
530 | ||
dd8f71ee | 531 | #include "log.h" |