605566974c
Also add a check that the test programs are under about ten megabytes (they're currently around one on platforms that put inline statics full of zeroes into BSS and around 270 on ones that don't). Fixes #339
111 lines
2.7 KiB
C++
111 lines
2.7 KiB
C++
#pragma once
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#if defined(_MSC_VER) && !defined(__clang__)
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# define ALWAYSINLINE __forceinline
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# define NOINLINE __declspec(noinline)
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# define likely(x) !!(x)
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# define unlikely(x) !!(x)
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# define SNMALLOC_SLOW_PATH NOINLINE
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# define SNMALLOC_FAST_PATH ALWAYSINLINE
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# define SNMALLOC_PURE
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# define SNMALLOC_COLD
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#else
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# define likely(x) __builtin_expect(!!(x), 1)
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# define unlikely(x) __builtin_expect(!!(x), 0)
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# define ALWAYSINLINE __attribute__((always_inline))
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# define NOINLINE __attribute__((noinline))
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# define SNMALLOC_SLOW_PATH NOINLINE
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# define SNMALLOC_FAST_PATH inline ALWAYSINLINE
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# define SNMALLOC_PURE __attribute__((const))
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# define SNMALLOC_COLD __attribute__((cold))
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#endif
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#if defined(__cpp_constinit) && __cpp_constinit >= 201907
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# define SNMALLOC_CONSTINIT_FN constinit
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# define SNMALLOC_CONSTINIT_STATIC constinit const
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#else
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# define SNMALLOC_CONSTINIT_FN constexpr
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# define SNMALLOC_CONSTINIT_STATIC constexpr
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#endif
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#if defined(__cpp_consteval)
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# define SNMALLOC_CONSTEVAL consteval
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#else
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# define SNMALLOC_CONSTEVAL constexpr
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#endif
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#if !defined(__clang__) && defined(__GNUC__)
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# define GCC_NOT_CLANG
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#endif
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#ifdef GCC_NOT_CLANG
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# if __GNUC__ >= 8
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# define GCC_VERSION_EIGHT_PLUS
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# endif
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#endif
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#ifdef __APPLE__
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# define SNMALLOC_FORCE_BSS __attribute__((section("__DATA,__bss")))
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#elif defined(__ELF__)
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# define SNMALLOC_FORCE_BSS __attribute__((section(".bss")))
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#else
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# define SNMALLOC_FORCE_BSS
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#endif
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#ifndef __has_builtin
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# define __has_builtin(x) 0
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#endif
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#define UNUSED(x) ((void)(x))
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namespace snmalloc
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{
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// Forwards reference so that the platform can define how to handle errors.
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[[noreturn]] SNMALLOC_COLD void error(const char* const str);
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} // namespace snmalloc
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#define TOSTRING(expr) TOSTRING2(expr)
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#define TOSTRING2(expr) #expr
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#ifdef NDEBUG
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# define SNMALLOC_ASSERT(expr) \
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{}
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#else
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# define SNMALLOC_ASSERT(expr) \
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{ \
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if (!(expr)) \
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{ \
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snmalloc::error("assert fail: " #expr " in " __FILE__ \
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" on " TOSTRING(__LINE__)); \
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} \
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}
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#endif
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#define SNMALLOC_CHECK(expr) \
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{ \
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if (!(expr)) \
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{ \
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snmalloc::error("Check fail: " #expr " in " __FILE__ \
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" on " TOSTRING(__LINE__)); \
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} \
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}
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#ifndef NDEBUG
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# define SNMALLOC_ASSUME(x) SNMALLOC_ASSERT(x)
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#else
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# if __has_builtin(__builtin_assume)
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# define SNMALLOC_ASSUME(x) __builtin_assume((x))
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# elif defined(_MSC_VER)
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# define SNMALLOC_ASSUME(x) __assume((x));
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# elif defined(__GNUC__)
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# define SNMALLOC_ASSUME(x) \
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if (!(x)) \
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__builtin_unreachable();
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# else
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# define SNMALLOC_ASSUME(x) \
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do \
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{ \
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} while (0)
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# endif
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#endif
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