mirror of
https://github.com/simdjson/simdjson
synced 2026-06-08 17:27:07 +00:00
Daniel Lemire
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
#ifndef SIMDJSON_COMMON_DEFS_H
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#define SIMDJSON_COMMON_DEFS_H
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#include "simdjson/portability.h"
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#include <cassert>
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// we support documents up to 4GB
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#define SIMDJSON_MAXSIZE_BYTES 0xFFFFFFFF
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// the input buf should be readable up to buf + SIMDJSON_PADDING
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#ifdef __AVX2__
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#define SIMDJSON_PADDING sizeof(__m256i)
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#else
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// this is a stopgap; there should be a better description of the
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// main loop and its behavior that abstracts over this
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#define SIMDJSON_PADDING 32
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#endif
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#ifndef _MSC_VER
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// Implemented using Labels as Values which works in GCC and CLANG (and maybe
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// also in Intel's compiler), but won't work in MSVC.
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#define SIMDJSON_USE_COMPUTED_GOTO
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#endif
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// Align to N-byte boundary
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#define ROUNDUP_N(a, n) (((a) + ((n)-1)) & ~((n)-1))
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#define ROUNDDOWN_N(a, n) ((a) & ~((n)-1))
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#define ISALIGNED_N(ptr, n) (((uintptr_t)(ptr) & ((n)-1)) == 0)
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#ifdef _MSC_VER
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#define really_inline __forceinline
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#define never_inline __declspec(noinline)
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#define UNUSED
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#define WARN_UNUSED
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#ifndef likely
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#define likely(x) x
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#endif
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#ifndef unlikely
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#define unlikely(x) x
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#endif
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#else
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#define really_inline inline __attribute__((always_inline, unused))
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#define never_inline inline __attribute__((noinline, unused))
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#define UNUSED __attribute__((unused))
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#define WARN_UNUSED __attribute__((warn_unused_result))
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#ifndef likely
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#define likely(x) __builtin_expect(!!(x), 1)
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#endif
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#ifndef unlikely
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#endif
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#endif // MSC_VER
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#endif // SIMDJSON_COMMON_DEFS_H
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