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#ifndef CHECK_H_
#define CHECK_H_
#include <cmath>
#include <cstdlib>
#include <ostream>
#include "benchmark/export.h"
#include "internal_macros.h"
#include "log.h"
#if defined(__GNUC__) || defined(__clang__)
#define BENCHMARK_NOEXCEPT noexcept
#define BENCHMARK_NOEXCEPT_OP(x) noexcept(x)
#elif defined(_MSC_VER) && !defined(__clang__)
#if _MSC_VER >= 1900
#define BENCHMARK_NOEXCEPT noexcept
#define BENCHMARK_NOEXCEPT_OP(x) noexcept(x)
#else
#define BENCHMARK_NOEXCEPT
#define BENCHMARK_NOEXCEPT_OP(x)
#endif
#define __func__ __FUNCTION__
#else
#define BENCHMARK_NOEXCEPT
#define BENCHMARK_NOEXCEPT_OP(x)
#endif
namespace benchmark {
namespace internal {
typedef void(AbortHandlerT)();
BENCHMARK_EXPORT
AbortHandlerT*& GetAbortHandler();
BENCHMARK_NORETURN inline void CallAbortHandler() {
GetAbortHandler()();
std::abort(); // fallback to enforce noreturn
}
// CheckHandler is the class constructed by failing BM_CHECK macros.
// CheckHandler will log information about the failures and abort when it is
// destructed.
class CheckHandler {
public:
CheckHandler(const char* check, const char* file, const char* func, int line)
: log_(GetErrorLogInstance()) {
log_ << file << ":" << line << ": " << func << ": Check `" << check
<< "' failed. ";
}
LogType& GetLog() { return log_; }
#if defined(COMPILER_MSVC)
#pragma warning(push)
#pragma warning(disable : 4722)
#endif
BENCHMARK_NORETURN ~CheckHandler() BENCHMARK_NOEXCEPT_OP(false) {
log_ << std::endl;
CallAbortHandler();
}
#if defined(COMPILER_MSVC)
#pragma warning(pop)
#endif
CheckHandler& operator=(const CheckHandler&) = delete;
CheckHandler(const CheckHandler&) = delete;
CheckHandler() = delete;
private:
LogType& log_;
};
} // end namespace internal
} // end namespace benchmark
// The BM_CHECK macro returns a std::ostream object that can have extra
// information written to it.
#ifndef NDEBUG
#define BM_CHECK(b) \
(b ? ::benchmark::internal::GetNullLogInstance() \
: ::benchmark::internal::CheckHandler(#b, __FILE__, __func__, __LINE__) \
.GetLog())
#else
#define BM_CHECK(b) ::benchmark::internal::GetNullLogInstance()
#endif
// clang-format off
// preserve whitespacing between operators for alignment
#define BM_CHECK_EQ(a, b) BM_CHECK((a) == (b))
#define BM_CHECK_NE(a, b) BM_CHECK((a) != (b))
#define BM_CHECK_GE(a, b) BM_CHECK((a) >= (b))
#define BM_CHECK_LE(a, b) BM_CHECK((a) <= (b))
#define BM_CHECK_GT(a, b) BM_CHECK((a) > (b))
#define BM_CHECK_LT(a, b) BM_CHECK((a) < (b))
#define BM_CHECK_FLOAT_EQ(a, b, eps) BM_CHECK(std::fabs((a) - (b)) < (eps))
#define BM_CHECK_FLOAT_NE(a, b, eps) BM_CHECK(std::fabs((a) - (b)) >= (eps))
#define BM_CHECK_FLOAT_GE(a, b, eps) BM_CHECK((a) - (b) > -(eps))
#define BM_CHECK_FLOAT_LE(a, b, eps) BM_CHECK((b) - (a) > -(eps))
#define BM_CHECK_FLOAT_GT(a, b, eps) BM_CHECK((a) - (b) > (eps))
#define BM_CHECK_FLOAT_LT(a, b, eps) BM_CHECK((b) - (a) > (eps))
//clang-format on
#endif // CHECK_H_
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