utilities.hpp

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#pragma once
 
#include <cstdint>
#include <time.h> // NOLINT(modernize-deprecated-headers) - need POSIX clock_gettime/CLOCK_MONOTONIC
 
#if defined(__x86_64__) || defined(_M_X64)
#include <immintrin.h>
#define IPC_PAUSE() _mm_pause()
#else
#define IPC_PAUSE()                                                                                                    \
    do {                                                                                                               \
    } while (0)
#endif
 
namespace bb::ipc {
 
inline uint64_t mono_ns_now()
{
    struct timespec ts;
    if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0) {
        return 0;
    }
    return (static_cast<uint64_t>(ts.tv_sec) * 1000000000ULL) + static_cast<uint64_t>(ts.tv_nsec);
}
 
} // namespace bb::ipc