common: reorganize

2026-10-12 02:08:45 +00:00 · 2021-09-04 18:28:07 -04:00
parent ce8a30bf8f
commit 8fdaaa2eab
239 changed files with 559 additions and 1145 deletions
@@ -0,0 +1,140 @@
+/*  PCSX2 - PS2 Emulator for PCs
+ *  Copyright (C) 2002-2010  PCSX2 Dev Team
+ *
+ *  PCSX2 is free software: you can redistribute it and/or modify it under the terms
+ *  of the GNU Lesser General Public License as published by the Free Software Found-
+ *  ation, either version 3 of the License, or (at your option) any later version.
+ *
+ *  PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ *  PURPOSE.  See the GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along with PCSX2.
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "common/RedtapeWindows.h"
+#include "common/PersistentThread.h"
+#include "common/emitter/tools.h"
+
+#ifndef __WXMSW__
+
+#pragma message("WinThreads.cpp should only be compiled by projects or makefiles targeted at Microsoft Windows.")
+
+#else
+
+__fi void Threading::Sleep(int ms)
+{
+    ::Sleep(ms);
+}
+
+// For use in spin/wait loops,  Acts as a hint to Intel CPUs and should, in theory
+// improve performance and reduce cpu power consumption.
+__fi void Threading::SpinWait()
+{
+    _mm_pause();
+}
+
+__fi void Threading::EnableHiresScheduler()
+{
+    // This improves accuracy of Sleep() by some amount, and only adds a negligible amount of
+    // overhead on modern CPUs.  Typically desktops are already set pretty low, but laptops in
+    // particular may have a scheduler Period of 15 or 20ms to extend battery life.
+
+    // (note: this same trick is used by most multimedia software and games)
+
+    timeBeginPeriod(1);
+}
+
+__fi void Threading::DisableHiresScheduler()
+{
+    timeEndPeriod(1);
+}
+
+// This hacky union would probably fail on some cpu platforms if the contents of FILETIME aren't
+// packed (but for any x86 CPU and microsoft compiler, they will be).
+union FileTimeSucks
+{
+    FILETIME filetime;
+    u64 u64time;
+};
+
+u64 Threading::GetThreadCpuTime()
+{
+    FileTimeSucks user, kernel;
+    FILETIME dummy;
+    GetThreadTimes(GetCurrentThread(), &dummy, &dummy, &kernel.filetime, &user.filetime);
+    return user.u64time + kernel.u64time;
+}
+
+u64 Threading::GetThreadTicksPerSecond()
+{
+    return 10000000;
+}
+
+u64 Threading::pxThread::GetCpuTime() const
+{
+    if (!m_native_handle)
+        return 0;
+
+    FileTimeSucks user, kernel;
+    FILETIME dummy;
+
+    if (GetThreadTimes((HANDLE)m_native_handle, &dummy, &dummy, &kernel.filetime, &user.filetime))
+        return user.u64time + kernel.u64time;
+
+    return 0; // thread prolly doesn't exist anymore.
+}
+
+void Threading::pxThread::_platform_specific_OnStartInThread()
+{
+    // OpenThread Note: Vista and Win7 need only THREAD_QUERY_LIMITED_INFORMATION (XP and 2k need more),
+    // however we own our process threads, so shouldn't matter in any case...
+
+    m_native_id = (uptr)GetCurrentThreadId();
+    m_native_handle = (uptr)OpenThread(THREAD_QUERY_INFORMATION, false, (DWORD)m_native_id);
+
+    pxAssertDev(m_native_handle, wxNullChar);
+}
+
+void Threading::pxThread::_platform_specific_OnCleanupInThread()
+{
+    CloseHandle((HANDLE)m_native_handle);
+}
+
+void Threading::SetNameOfCurrentThread(const char *name)
+{
+// This feature needs Windows headers and MSVC's SEH support:
+
+#if defined(_WIN32) && defined(_MSC_VER)
+
+    // This code sample was borrowed form some obscure MSDN article.
+    // In a rare bout of sanity, it's an actual Microsoft-published hack
+    // that actually works!
+
+    static const int MS_VC_EXCEPTION = 0x406D1388;
+
+#pragma pack(push, 8)
+    struct THREADNAME_INFO
+    {
+        DWORD dwType;     // Must be 0x1000.
+        LPCSTR szName;    // Pointer to name (in user addr space).
+        DWORD dwThreadID; // Thread ID (-1=caller thread).
+        DWORD dwFlags;    // Reserved for future use, must be zero.
+    };
+#pragma pack(pop)
+
+    THREADNAME_INFO info;
+    info.dwType = 0x1000;
+    info.szName = name;
+    info.dwThreadID = GetCurrentThreadId();
+    info.dwFlags = 0;
+
+    __try {
+        RaiseException(MS_VC_EXCEPTION, 0, sizeof(info) / sizeof(ULONG_PTR), (ULONG_PTR *)&info);
+    } __except (EXCEPTION_EXECUTE_HANDLER) {
+    }
+#endif
+}
+
+#endif