#define _printf_(a,b) __attribute__ ((format (printf, a, b)))
#define _alloc_(...) __attribute__ ((alloc_size(__VA_ARGS__)))
#define _sentinel_ __attribute__ ((sentinel))
-#define _noreturn_ __attribute__((noreturn))
#define _unused_ __attribute__ ((unused))
#define _destructor_ __attribute__ ((destructor))
#define _pure_ __attribute__ ((pure))
#define _alignas_(x) __attribute__((aligned(__alignof(x))))
#define _cleanup_(x) __attribute__((cleanup(x)))
+/* Temporarily disable some warnings */
+#define DISABLE_WARNING_DECLARATION_AFTER_STATEMENT \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wdeclaration-after-statement\"")
+
+#define DISABLE_WARNING_FORMAT_NONLITERAL \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"")
+
+#define DISABLE_WARNING_MISSING_PROTOTYPES \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"")
+
+#define DISABLE_WARNING_NONNULL \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wnonnull\"")
+
+#define DISABLE_WARNING_SHADOW \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wshadow\"")
+
+#define REENABLE_WARNING \
+ _Pragma("GCC diagnostic pop")
+
/* automake test harness */
#define EXIT_TEST_SKIP 77
return ((l + ali - 1) & ~(ali - 1));
}
-#define ALIGN_TO_PTR(p, ali) ((void*) ALIGN_TO((unsigned long) p))
+#define ALIGN_TO_PTR(p, ali) ((void*) ALIGN_TO((unsigned long) p, ali))
+
+/* align to next higher power-of-2 (except for: 0 => 0, overflow => 0) */
+static inline unsigned long ALIGN_POWER2(unsigned long u) {
+ /* clz(0) is undefined */
+ if (u == 1)
+ return 1;
+
+ /* left-shift overflow is undefined */
+ if (__builtin_clzl(u - 1UL) < 1)
+ return 0;
+
+ return 1UL << (sizeof(u) * 8 - __builtin_clzl(u - 1UL));
+}
#define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
})
#undef MAX
-#define MAX(a,b) \
- __extension__ ({ \
- typeof(a) _a = (a); \
- typeof(b) _b = (b); \
- _a > _b ? _a : _b; \
+#define MAX(a,b) \
+ __extension__ ({ \
+ const typeof(a) _a = (a); \
+ const typeof(b) _b = (b); \
+ _a > _b ? _a : _b; \
})
-#define MAX3(x,y,z) \
- __extension__ ({ \
- typeof(x) _c = MAX(x,y); \
- MAX(_c, z); \
+/* evaluates to (void) if _A or _B are not constant or of different types */
+#define CONST_MAX(_A, _B) \
+ __extension__ (__builtin_choose_expr( \
+ __builtin_constant_p(_A) && \
+ __builtin_constant_p(_B) && \
+ __builtin_types_compatible_p(typeof(_A), typeof(_B)), \
+ ((_A) > (_B)) ? (_A) : (_B), \
+ (void)0))
+
+#define MAX3(x,y,z) \
+ __extension__ ({ \
+ const typeof(x) _c = MAX(x,y); \
+ MAX(_c, z); \
})
#undef MIN
-#define MIN(a,b) \
- __extension__ ({ \
- typeof(a) _a = (a); \
- typeof(b) _b = (b); \
- _a < _b ? _a : _b; \
+#define MIN(a,b) \
+ __extension__ ({ \
+ const typeof(a) _a = (a); \
+ const typeof(b) _b = (b); \
+ _a < _b ? _a : _b; \
+ })
+
+#define MIN3(x,y,z) \
+ __extension__ ({ \
+ const typeof(x) _c = MIN(x,y); \
+ MIN(_c, z); \
+ })
+
+#define LESS_BY(A,B) \
+ __extension__ ({ \
+ const typeof(A) _A = (A); \
+ const typeof(B) _B = (B); \
+ _A > _B ? _A - _B : 0; \
})
#ifndef CLAMP
#define CLAMP(x, low, high) \
__extension__ ({ \
- typeof(x) _x = (x); \
- typeof(low) _low = (low); \
- typeof(high) _high = (high); \
+ const typeof(x) _x = (x); \
+ const typeof(low) _low = (low); \
+ const typeof(high) _high = (high); \
((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \
})
#endif
} while (false)
#if defined(static_assert)
-#define assert_cc(expr) static_assert(expr, #expr)
+/* static_assert() is sometimes defined in a way that trips up
+ * -Wdeclaration-after-statement, hence let's temporarily turn off
+ * this warning around it. */
+#define assert_cc(expr) \
+ DISABLE_WARNING_DECLARATION_AFTER_STATEMENT; \
+ static_assert(expr, #expr); \
+ REENABLE_WARNING
#else
-#define assert_cc(expr) struct UNIQUE(_assert_struct_) { char x[(expr) ? 0 : -1]; };
+#define assert_cc(expr) \
+ DISABLE_WARNING_DECLARATION_AFTER_STATEMENT; \
+ struct UNIQUE(_assert_struct_) { \
+ char x[(expr) ? 0 : -1]; \
+ }; \
+ REENABLE_WARNING
#endif
-#define assert_return(expr, r) \
- do { \
- if (_unlikely_(!(expr))) \
- return (r); \
+#define assert_return(expr, r) \
+ do { \
+ if (_unlikely_(!(expr))) { \
+ log_assert_failed_return(#expr, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
+ return (r); \
+ } \
} while (false)
#define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
#define PTR_TO_UINT64(p) ((uint64_t) ((uintptr_t) (p)))
#define UINT64_TO_PTR(u) ((void *) ((uintptr_t) (u)))
+#define PTR_TO_SIZE(p) ((size_t) ((uintptr_t) (p)))
+#define SIZE_TO_PTR(u) ((void *) ((uintptr_t) (u)))
+
#define memzero(x,l) (memset((x), 0, (l)))
#define zero(x) (memzero(&(x), sizeof(x)))
} \
} while(false)
- /* Because statfs.t_type can be int on some architecures, we have to cast
+ /* Because statfs.t_type can be int on some architectures, we have to cast
* the const magic to the type, otherwise the compiler warns about
* signed/unsigned comparison, because the magic can be 32 bit unsigned.
*/
#define SET_FLAG(v, flag, b) \
(v) = (b) ? ((v) | (flag)) : ((v) & ~(flag))
+#define IN_SET(x, y, ...) \
+ ({ \
+ const typeof(y) _y = (y); \
+ const typeof(_y) _x = (x); \
+ unsigned _i; \
+ bool _found = false; \
+ for (_i = 0; _i < 1 + sizeof((const typeof(_x)[]) { __VA_ARGS__ })/sizeof(const typeof(_x)); _i++) \
+ if (((const typeof(_x)[]) { _y, __VA_ARGS__ })[_i] == _x) { \
+ _found = true; \
+ break; \
+ } \
+ _found; \
+ })
+
+/* Define C11 thread_local attribute even on older gcc compiler
+ * version */
+#ifndef thread_local
+/*
+ * Don't break on glibc < 2.16 that doesn't define __STDC_NO_THREADS__
+ * see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53769
+ */
+#if __STDC_VERSION__ >= 201112L && !(defined(__STDC_NO_THREADS__) || (defined(__GNU_LIBRARY__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 16))
+#define thread_local _Thread_local
+#else
+#define thread_local __thread
+#endif
+#endif
+
+/* Define C11 noreturn without <stdnoreturn.h> and even on older gcc
+ * compiler versions */
+#ifndef noreturn
+#if __STDC_VERSION__ >= 201112L
+#define noreturn _Noreturn
+#else
+#define noreturn __attribute__((noreturn))
+#endif
+#endif
+
#include "log.h"