mirror of
https://github.com/libretro/pcsx2.git
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143 lines
3.4 KiB
C++
143 lines
3.4 KiB
C++
/* PCSX2 - PS2 Emulator for PCs
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* Copyright (C) 2002-2021 PCSX2 Dev Team
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*
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCSX2.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#if defined(_WIN32)
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#include "common/Pcsx2Defs.h"
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#include "common/RedtapeWindows.h"
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#include "common/Exceptions.h"
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#include "common/StringUtil.h"
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#include "common/Threading.h"
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#include "common/General.h"
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#include "common/WindowInfo.h"
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#include "fmt/core.h"
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#include <mmsystem.h>
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#include <timeapi.h>
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#include <VersionHelpers.h>
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alignas(16) static LARGE_INTEGER lfreq;
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// This gets leaked... oh well.
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static thread_local HANDLE s_sleep_timer;
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static thread_local bool s_sleep_timer_created = false;
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static HANDLE GetSleepTimer()
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{
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if (s_sleep_timer_created)
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return s_sleep_timer;
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s_sleep_timer_created = true;
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s_sleep_timer = CreateWaitableTimerEx(nullptr, nullptr, CREATE_WAITABLE_TIMER_HIGH_RESOLUTION, TIMER_ALL_ACCESS);
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if (!s_sleep_timer)
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s_sleep_timer = CreateWaitableTimer(nullptr, TRUE, nullptr);
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return s_sleep_timer;
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}
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void InitCPUTicks()
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{
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QueryPerformanceFrequency(&lfreq);
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}
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u64 GetTickFrequency()
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{
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return lfreq.QuadPart;
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}
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u64 GetCPUTicks()
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{
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LARGE_INTEGER count;
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QueryPerformanceCounter(&count);
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return count.QuadPart;
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}
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u64 GetPhysicalMemory()
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{
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MEMORYSTATUSEX status;
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status.dwLength = sizeof(status);
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GlobalMemoryStatusEx(&status);
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return status.ullTotalPhys;
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}
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// Calculates the Windows OS Version and processor architecture, and returns it as a
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// human-readable string. :)
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std::string GetOSVersionString()
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{
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std::string retval;
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SYSTEM_INFO si;
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GetNativeSystemInfo(&si);
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if (IsWindows10OrGreater())
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{
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retval = "Microsoft ";
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retval += IsWindowsServer() ? "Windows Server 2016+" : "Windows 10+";
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}
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else
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retval = "Unsupported Operating System!";
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return retval;
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}
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bool WindowInfo::InhibitScreensaver(const WindowInfo& wi, bool inhibit)
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{
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EXECUTION_STATE flags = ES_CONTINUOUS;
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if (inhibit)
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flags |= ES_DISPLAY_REQUIRED;
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SetThreadExecutionState(flags);
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return true;
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}
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bool Common::PlaySoundAsync(const char* path)
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{
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const std::wstring wpath(StringUtil::UTF8StringToWideString(path));
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return PlaySoundW(wpath.c_str(), NULL, SND_ASYNC | SND_NODEFAULT);
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}
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void Threading::Sleep(int ms)
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{
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::Sleep(ms);
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}
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void Threading::SleepUntil(u64 ticks)
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{
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// This is definitely sub-optimal, but there's no way to sleep until a QPC timestamp on Win32.
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const s64 diff = static_cast<s64>(ticks - GetCPUTicks());
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if (diff <= 0)
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return;
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const HANDLE hTimer = GetSleepTimer();
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if (!hTimer)
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return;
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const u64 one_hundred_nanos_diff = (static_cast<u64>(diff) * 10000000ULL) / GetTickFrequency();
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if (one_hundred_nanos_diff == 0)
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return;
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LARGE_INTEGER fti;
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fti.QuadPart = -static_cast<s64>(one_hundred_nanos_diff);
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if (SetWaitableTimer(hTimer, &fti, 0, nullptr, nullptr, FALSE))
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{
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WaitForSingleObject(hTimer, INFINITE);
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return;
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}
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}
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#endif
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