mirror of https://github.com/xzeldon/htop.git
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
#ifndef HEADER_Macros
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#define HEADER_Macros
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#include <assert.h> // IWYU pragma: keep
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#ifndef MINIMUM
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#define MINIMUM(a, b) ((a) < (b) ? (a) : (b))
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#endif
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#ifndef MAXIMUM
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#define MAXIMUM(a, b) ((a) > (b) ? (a) : (b))
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#endif
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#ifndef CLAMP
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#define CLAMP(x, low, high) (assert((low) <= (high)), ((x) > (high)) ? (high) : MAXIMUM(x, low))
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#endif
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#ifndef ARRAYSIZE
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#define ARRAYSIZE(x) (sizeof(x) / sizeof((x)[0]))
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#endif
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#ifndef SPACESHIP_NUMBER
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#define SPACESHIP_NUMBER(a, b) (((a) > (b)) - ((a) < (b)))
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#endif
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#ifndef SPACESHIP_NULLSTR
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#define SPACESHIP_NULLSTR(a, b) strcmp((a) ? (a) : "", (b) ? (b) : "")
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#endif
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#ifndef SPACESHIP_DEFAULTSTR
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#define SPACESHIP_DEFAULTSTR(a, b, s) strcmp((a) ? (a) : (s), (b) ? (b) : (s))
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#endif
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#ifdef __GNUC__ // defined by GCC and Clang
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#define ATTR_FORMAT(type, index, check) __attribute__((format (type, index, check)))
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#define ATTR_NONNULL __attribute__((nonnull))
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#define ATTR_NORETURN __attribute__((noreturn))
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#define ATTR_UNUSED __attribute__((unused))
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#define ATTR_MALLOC __attribute__((malloc))
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#else /* __GNUC__ */
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#define ATTR_FORMAT(type, index, check)
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#define ATTR_NONNULL
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#define ATTR_NORETURN
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#define ATTR_UNUSED
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#define ATTR_MALLOC
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#endif /* __GNUC__ */
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#ifdef HAVE_ATTR_ALLOC_SIZE
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#define ATTR_ALLOC_SIZE1(a) __attribute__((alloc_size (a)))
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#define ATTR_ALLOC_SIZE2(a, b) __attribute__((alloc_size (a, b)))
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#else
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#define ATTR_ALLOC_SIZE1(a)
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#define ATTR_ALLOC_SIZE2(a, b)
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#endif /* HAVE_ATTR_ALLOC_SIZE */
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// ignore casts discarding const specifier, e.g.
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// const char [] -> char * / void *
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// const char *[2]' -> char *const *
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#if defined(__clang__)
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#define IGNORE_WCASTQUAL_BEGIN _Pragma("clang diagnostic push") \
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_Pragma("clang diagnostic ignored \"-Wcast-qual\"")
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#define IGNORE_WCASTQUAL_END _Pragma("clang diagnostic pop")
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#elif defined(__GNUC__)
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#define IGNORE_WCASTQUAL_BEGIN _Pragma("GCC diagnostic push") \
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_Pragma("GCC diagnostic ignored \"-Wcast-qual\"")
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#define IGNORE_WCASTQUAL_END _Pragma("GCC diagnostic pop")
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#else
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#define IGNORE_WCASTQUAL_BEGIN
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#define IGNORE_WCASTQUAL_END
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#endif
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/* This subtraction is used by Linux / NetBSD / OpenBSD for calculation of CPU usage items. */
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static inline unsigned long long saturatingSub(unsigned long long a, unsigned long long b) {
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return a > b ? a - b : 0;
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}
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#endif
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