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Diffstat (limited to 'client/asmjit/core/osutils.cpp')
| -rw-r--r-- | client/asmjit/core/osutils.cpp | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/client/asmjit/core/osutils.cpp b/client/asmjit/core/osutils.cpp deleted file mode 100644 index e2f34ef..0000000 --- a/client/asmjit/core/osutils.cpp +++ /dev/null @@ -1,106 +0,0 @@ -// AsmJit - Machine code generation for C++ -// -// * Official AsmJit Home Page: https://asmjit.com -// * Official Github Repository: https://github.com/asmjit/asmjit -// -// Copyright (c) 2008-2020 The AsmJit Authors -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -#include "../core/api-build_p.h" -#include "../core/osutils.h" -#include "../core/support.h" - -#if defined(_WIN32) - #include <atomic> -#elif defined(__APPLE__) - #include <mach/mach_time.h> -#else - #include <time.h> - #include <unistd.h> -#endif - -ASMJIT_BEGIN_NAMESPACE - -// ============================================================================ -// [asmjit::OSUtils - GetTickCount] -// ============================================================================ - -uint32_t OSUtils::getTickCount() noexcept { -#if defined(_WIN32) - enum HiResStatus : uint32_t { - kHiResUnknown = 0, - kHiResAvailable = 1, - kHiResNotAvailable = 2 - }; - - static std::atomic<uint32_t> _hiResStatus(kHiResUnknown); - static volatile double _hiResFreq(0); - - uint32_t status = _hiResStatus.load(); - LARGE_INTEGER now, qpf; - - if (status != kHiResNotAvailable && ::QueryPerformanceCounter(&now)) { - double freq = _hiResFreq; - if (status == kHiResUnknown) { - // Detects the availability of high resolution counter. - if (::QueryPerformanceFrequency(&qpf)) { - freq = double(qpf.QuadPart) / 1000.0; - _hiResFreq = freq; - _hiResStatus.compare_exchange_strong(status, kHiResAvailable); - status = kHiResAvailable; - } - else { - // High resolution not available. - _hiResStatus.compare_exchange_strong(status, kHiResNotAvailable); - } - } - - if (status == kHiResAvailable) - return uint32_t(uint64_t(int64_t(double(now.QuadPart) / freq)) & 0xFFFFFFFFu); - } - - // Bail to `GetTickCount()` if we cannot use high resolution. - return ::GetTickCount(); -#elif defined(__APPLE__) - // See Apple's QA1398. - static mach_timebase_info_data_t _machTime; - - uint32_t denom = _machTime.denom; - if (ASMJIT_UNLIKELY(!denom)) { - if (mach_timebase_info(&_machTime) != KERN_SUCCESS || !(denom = _machTime.denom)) - return 0; - } - - // `mach_absolute_time()` returns nanoseconds, we want milliseconds. - uint64_t t = mach_absolute_time() / 1000000u; - t = (t * _machTime.numer) / _machTime.denom; - return uint32_t(t & 0xFFFFFFFFu); -#elif defined(_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 - struct timespec ts; - if (ASMJIT_UNLIKELY(clock_gettime(CLOCK_MONOTONIC, &ts) != 0)) - return 0; - - uint64_t t = (uint64_t(ts.tv_sec ) * 1000u) + (uint64_t(ts.tv_nsec) / 1000000u); - return uint32_t(t & 0xFFFFFFFFu); -#else - #pragma message("asmjit::OSUtils::getTickCount() doesn't have implementation for the target OS.") - return 0; -#endif -} - -ASMJIT_END_NAMESPACE |